# DIMP Enforcement Guidance

**Citation:** PHMSA Guidance, DIMP Enforcement Guidance  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2015-12-07  
**Published:** 2015-12-07

DIMP Enforcement Guidance Document DIMP_Enforcement_Guidance_12_7_2015.pdf (686.32 KB) Distribution Integrity Management Plan (DIMP) Enforcement Guidance. The materials contained in this document consist of guidance, techniques, procedures and other information for internal use by the PHMSA pipeline safety enforcement staff. This guidance document describes the practices used by PHMSA pipeline safety investigators an

## Document text

DIMP Enforcement Guidance

Document

 DIMP_Enforcement_Guidance_12_7_2015.pdf (686.32 KB)

        Distribution Integrity Management Plan (DIMP) Enforcement Guidance. The materials contained in this document consist of guidance, techniques, procedures and other information for internal use by the PHMSA pipeline safety enforcement staff. This guidance document describes the practices used by PHMSA pipeline safety investigators and other enforcement personnel in undertaking their compliance, inspection, and enforcement activities.

          Issued Date: Monday, December 7, 2015

<<<PAGE 1>>>

Gas Distribution Pipeline Integrity Management Enforcement
Guidance
49 CFR Part 192 – Subpart P
Introduction
The materials contained in this document consist of guidance, techniques, procedures and other information
for internal use by the PHMSA pipeline safety enforcement staff. This guidance document describes the
practices used by PHMSA pipeline safety investigators and other enforcement personnel in undertaking their
compliance, inspection, and enforcement activities. This document is U.S. Government property and is
to be used in conjunction with official duties.
The Federal pipeline safety regulations (49 CFR Parts 190-199) discussed in this guidance document
contains legally binding requirements. This document is not a regulation and creates no new legal
obligations. The regulation is controlling. The materials in this document are explanatory in nature and reflect
PHMSA’s current application of the regulations in effect at the time of the issuance of the guidance. In
preparing an enforcement action alleging a probable violation, an allegation must always be based on the
failure to take a required action (or taking a prohibited action) that is set forth directly in the language of the
regulation. An allegation should never be drafted in a manner that says the operator “violated the guidance.”
Nothing in this guidance document is intended to diminish or otherwise affect the authority of PHMSA to carry
out its statutory, regulatory or other official functions or to commit PHMSA to taking any action that is subject
to its discretion. Nothing in this document is intended to and does not create any legal or equitable right or
benefit, substantive or procedural, enforceable at law by any person or organization against PHMSA, its
personnel, State agencies or officers carrying out programs authorized under Federal law.
Decisions about specific investigations and enforcement cases are made according to the specific facts
and circumstances at hand. Investigations and compliance determinations often require careful legal and
technical analysis of complicated issues. Although this guidance document serves as a reference for the
staff responsible for investigations and enforcement, no set of procedures or policies can replace the need for
active and ongoing consultation with supervisors, colleagues, and the Office of Chief Counsel in enforcement
matters.
Comments and suggestions for future changes and additions to this guidance document are invited and
should be forwarded to your supervisor.
The materials in this guidance document may be modified or revoked without prior notice by PHMSA
management.

<<<PAGE 2>>>

Table of Contents
Glossary ........................................................................................................................................................................ 2
§192.1001 What definitions apply to this subpart? ....................................................................................................... 3
§192.1003 What do the regulations in this subpart cover? ............................................................................................ 5
§192.1005 What must a gas distribution operator (other than a master meter or small LPG operator) do
to implement this part? ............................................................................................................................... 7
§192.1007 What are the required elements of an integrity management plan?
192.1007(a) Knowledge ..............................................................................................................................10
192.1007(b) Identify threat .........................................................................................................................15
192.1007(c) Evaluate and rank risk ...........................................................................................................21
192.1007(d) Identify and implement measures to address risks .................................................................26
192.1007 (e) Measure performance, monitor results, and evaluate effectiveness ......................................31
192.1007(f) Periodic Evaluation and Improvement ...................................................................................35
192.1007(g) Report results .........................................................................................................................38
§192.1009, §191.12 What must an operator report when a mechanical fitting fails? ................................................... 41
§192.1011 What records must an operator keep? ............................................................................................................. 43
§192.1013 When may an operator deviate from required periodic inspections under this part? .................................. 46
§192.1015 What must a master meter or small liquefied petroleum gas (LPG) operator do to implement this subpart?
192.1015(a) General ................................................................................................................................... 48
§192.1015(b) What are the required elements of an integrity management plan?
192.1015(b)(1) Knowledge ...........................................................................................................................51
192.1015(b)(2) Identify threats.....................................................................................................................55
192.1015(b)(3) Rank risks ............................................................................................................................60
192.1015(b)(4) Identify and implement measures to mitigate risks ..............................................................64
192.1015(b)(5) Measure performance, monitor results, and evaluate effectiveness.....................................68
192.1015(b)(6) Periodic Evaluation and Improvement ................................................................................70
§192.1015(c) What are the required elements of an integrity management plan? (c) Records ..................................... 73
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For a complete “Glossary of Terms” please refer to the following link:
http://www.phmsa.dot.gov/staticfiles/PHMSA/Pipeline/TQGlossary/Glossary.html
Page 2

<<<PAGE 4>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Distribution Integrity Management
Part 192
12/7/2015
§192.1001
What definitions apply to this subpart?
The following definitions apply to this subpart:
Excavation Damage means any impact that results in the need to repair or
replace an underground facility due to a weakening, or the partial or complete
destruction, of the facility, including, but not limited to, the protective coating,
lateral support, cathodic protection or the housing for the line device or facility.
Hazardous Leak means a leak that represents an existing or probable hazard to
persons or property and requires immediate repair or continuous action until the
conditions are no longer hazardous.
Integrity Management Plan or IM Plan means a written explanation of the
mechanisms or procedures the operator will use to implement its integrity
management program and to ensure compliance with this subpart.
Integrity Management Program or IM Program means an overall approach by
an operator to ensure the integrity of its gas distribution system.
Mechanical fitting means a mechanical device used to connect sections of pipe.
The term “Mechanical fitting” applies only to:
(1) Stab Type fittings;
(2) Nut Follower Type fittings;
(3) Bolted Type fittings; or
(4) Other Compression Type fittings.
Small LPG Operator means an operator of a liquefied petroleum gas (LPG)
distribution pipeline that serves fewer than 100 customers from a single source.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, February 1, 2011
Page 3

<<<PAGE 5>>>

Other Reference
Material
& Source
Guidance
Information
1. A line does not have to experience a leak or release to be considered to have
been damaged by excavation damage.
2. An operator need not classify leaks as hazardous or non-hazardous provided it
repairs all leaks when found. To qualify for this exclusion, an operator must
treat all leaks as if they were hazardous, providing for immediate repair or
continuous action until the leak is repaired.
Examples of a
Probable
Violation or
1. Operator does not have a comprehensive list of definitions.
2. Operator does not include all definitions in their Distribution Integrity
Management Plan (DIMP) or other plans.
3. Operator definitions are not consistent with Part 192.
Inadequate
Procedures
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
Examples of
Evidence
1. Copy of written Distribution Integrity Management Plan (DIMP) or applicable
portions that depict an omission or deficiency in the plan.
2. Operator records.
Other Special
Notations
Page 4

<<<PAGE 6>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1003
What do the regulations in this subpart cover?
General. This subpart prescribes minimum requirements for an IM program for any
gas distribution pipeline covered under this part, including liquefied petroleum gas
systems. A gas distribution operator, other than a master meter operator or a small
LPG operator, must follow the requirements in Sec. §192.1005-192.1013 of this
subpart. A master meter operator or small LPG operator of a gas distribution
pipeline must follow the requirements in §192.1015 of this subpart.
192-113, 74 FR 63906, Dec. 4, 2009
Interpretation: PI-11-0016 Date: 09-12-2012 – Response to Atmos Energy;
September 12, 2012 and DIMP FAQ C.3.7 asserting PHMSA’s position that farm
taps have been historically considered service lines, a subset of distribution pipelines
and are thus subject to all distribution line requirements.
Interpretation: PI-11-0008 Date: 04-19-2011 - Response to Northern Natural
Gas Company; Apr 19, 2011 and DIMP FAQ C.3.7 explained that - operators of
distribution, gathering, and transmission lines whose system includes “farm taps”
meeting the definition of a distribution line must have a DIMP covering these
facilities.
Distribution Integrity Management FAQs
• C.2.1 Must peak shaving and LNG facilities connected to our distribution
pipeline system be considered in our DIMP?
1. The DIMP must address all gas distribution systems covered by this part
including systems in which the operator transports natural gas, liquefied
petroleum gas (LPG), landfill gas (LFG), liquefied natural gas (LNG), and
propane-air mixtures.
2. All distribution pipeline and appurtenances are subject to DIMP including
mains, valves, fittings, regulator stations, drips, service lines, risers, service
meter and regulator sets, farm taps, high pressure distribution systems and low
pressure distribution systems.
3. Operators must follow their procedures. The DIMP and any individual
procedures documents must include management approvals, origin date, and
the effective date of the last revision. For additional information, see the
guidance section of §192.1005.
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Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
4. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. For Master Meter and Small LPG operators, the
integrity management program must include the appropriate set of
mechanisms or procedures to develop and implement each program element.
The operator may employ a written explanation of the process employed
(mechanism) to develop and implement a required element that is less specific
than a written procedure. The IM program for these pipelines should reflect the
relative simplicity of these types of pipelines. The DIMP could be concise,
but still must be sufficient for operator personnel to understand and implement
the program on a consistent basis.
1. The operator’s DIMP does not include all of the operator’s distribution
pipeline facilities.
2. The operator does not address LPG or other types of gas transported when
applicable.
3. Necessary regulated pipeline systems are not covered by a DIMP.
4. The DIMP does not include all pipe and appurtenances.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement tool
to address these issues would be a Notice of Amendment and not a Notice of Probable
Violation or a Warning Letter. Section 3 of the Enforcement Procedures provides guidance
on selecting the appropriate enforcement action.
1. Copy of written DIMP or applicable portion that shows omission or deficiency
in the DIMP.
2. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated other types of gas are transported.
3. Operator records.
4. Documented photographic evidence demonstrating the violation.
5. Documented oral and/or written statements from operator personnel.
Page 6

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Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1005
What must a gas distribution operator (other than a master meter or small LPG
operator) do to implement this subpart?
No later than August 2, 2011 a gas distribution operator must develop and
implement an integrity management program that includes a written integrity
management plan as specified in §192.1007.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 4: Implementation time. Page 63909
• Comment Topic 11: Required documentation. Page 63915
Distribution Integrity Management FAQs
• C.3.1 If an operator has both natural gas and LPG systems, must it have
two separate DIMP plans or may it have a single plan?
• C.3.2 Must an operator have one DIMP plan covering all of its systems or
could it have separate plans for different systems or service areas?
• C.3.3 Will companies operating in several states need to develop
individual DIMP plans for each state?
• C.3.4 What is the relationship between an operations & maintenance
manual and a DIMP plan?
• C.3.6 How does the new DIMP rule impact operators of gas piping
systems on military bases, Federal Government, or Indian Tribal
Government land?
• C.3.7 Are operators required to include “farm taps” in their distribution
integrity management plan?
• C.3.8 What do operators need to have implemented by August 2, 2011?
• C.3.10 What are the requirements for distribution systems put in service
after 8/2/2011?
• C.3.11 What are the requirements for distribution systems acquired after
8/2/2011?
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Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 1 - Introduction 1.1-1.3
• Section 2 - Elements of a Distribution Integrity Management Plan 2.1-2.2
• Section 10 - Sample DIMP Approaches 10.1-10.2
Gas Distribution Integrity Management Program: Resources
• DIMP Inspection Forms
• Technical Reports
• Distribution Integrity Management: Guidance for Master Meter and Small
Liquefied Petroleum Gas Pipeline Operators
• Plastic Piping Data Collection Initiative
• Gas Piping Technology Committee (GPTC) Guide Material Appendix
G-192-8 Distribution Management Integrity Program
• SHRIMP - Simple Handy Rule based Integrity Management Plan
• Industry Associations
• Excavation Damage Prevention Organizations
Guidance
Information
1. From 192.1001: Integrity Management Plan or IM Plan “
means a written
explanation of the mechanisms or procedures the operator will use to
implement its integrity management program and to ensure compliance with
this subpart.” An operator must have a written distribution integrity
management plan (DIMP) that contains or references procedures for
developing and implementing each required element in §192.1007.
2. The procedures must have adequate detail to clearly describe the manner in
which each requirement will be met.
3. The procedure must be documented so an inspector can make a reasonable
determination as to the accuracy and thoroughness of the procedure. The
procedures need to provide a description of who, what, when, where, and how
the operator will perform the elements. The DIMP can be concise, but still
must be sufficient for operator personnel to understand and implement the
program on a consistent basis. Operators must follow their procedures.
4. The DIMP and any individual procedures’ documents should include
management approvals, origin date, and the effective date of the last revision.
5. From §192.1007, Integrity Management Program or IM Program “means an
overall approach by an operator to ensure the integrity of its gas distribution
system.” The operator’s integrity management program must include the
appropriate set of procedures to develop and implement each program element
as required in 192.1007.
6. An operator’s DIMP may vary in length and complexity depending on the
specific equipment in service, the variety of facilities, the locations, and
referenced versus incorporated material.
7. The structure of the DIMP is not prescribed and may consist of a single
comprehensive DIMP or multiple cross-reference volumes with referenced
documents. The DIMP can be made available to personnel as hard-copy or
computer based documents but must be accessible at locations where DIMP
required activities are conducted. If the DIMP is computer based, the operator
must provide a means to access the procedures in the event of computer
failure.
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Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
8. Purchased or off-the-shelf plans and procedures must be fully customized to
the operator to cover their specific operating requirements, and the procedures
must have adequate detail to clearly describe the manner in which each
requirement will be met.
Guidance specific to an operator who transfers pipeline assets to another
operator but retains responsibility, by contract, for maintenance and distribution
integrity management activities.
1. Which operator is accountable for implementing the DIMP?
OPS and the States inspect operators for compliance with the pipeline safety
regulations. An ‘operator’ is defined in 49 C.F.R. §192.3 as “a person who
engages in the transportation of gas”. A ‘person’ is further defined as an
individual or firm, joint venture, partnership, corporation, association, State,
municipality, cooperative association, or joint stock association, and including
any trustee, receiver, assignee, or personal representative thereof. If an
operator retains responsibility for operations and maintenance responsibilities
including DIMP activities, that operator is responsible for complying with the
pipeline safety regulations.
1. The operator does not have a DIMP written and implemented by August 2,
2011.
2. The DIMP does not contain the necessary procedures to demonstrate that the
DIMP was written and is being implemented.
3. A new system was put into operation and service without a written DIMP.
4. An operator who acquired an existing system and did not continue operations
under the existing DIMP or did not incorporate the acquired assets into its
DIMP.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated that the DIMP was written and implemented by August 2, 2011.
2. Documented oral and/or written statements from operator personnel.
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Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(a)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing
and implementing the following elements:
(a) Knowledge. An operator must demonstrate an understanding of its gas
distribution system developed from reasonably available information.
(1) Identify the characteristics of the pipeline's design and operations and the
environmental factors that are necessary to assess the applicable threats and risks to
its gas distribution pipeline.
(2) Consider the information gained from past design, operations, and
maintenance.
(3) Identify additional information needed and provide a plan for gaining that
information over time through normal activities conducted on the pipeline (for
example, design, construction, operations or maintenance activities).
(4) Develop and implement a process by which the IM program will be reviewed
periodically and refined and improved as needed.
(5) Provide for the capture and retention of data on any new pipeline installed.
The data must include, at a minimum, the location where the new pipeline is
installed and the material of which it is constructed.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, Feb 1, 2011
Advisory Bulletin ADB-12-06 - Issued May 7, 2012
PHMSA is issuing an Advisory Bulletin to remind operators of gas and hazardous
liquid pipeline facilities to verify their records relating to operating specifications for
maximum allowable operating pressure (MAOP) required by 49 CFR 192.517 and
maximum operating pressure (MOP) required by 49 CFR 195.310.
Advisory Bulletin ADB-12-05 – Issued March 23, 2012
PHMSA urges owners and operators to conduct a comprehensive review of their
cast iron distribution pipeline systems and replacement programs and to accelerate
pipeline repair, rehabilitation, and replacement of aging and high-risk pipe. In
addition ADB notes regulation requirement for natural gas distribution companies to
develop DIMP for pipelines owned, operated or maintained.
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Advisory Bulletin ADB-11-01 – Issued January 10, 2011
PHMSA-2010-0381; Pipeline Safety: Establishing Maximum Allowable Operating
Pressure or Maximum Operating Pressure Using Record Evidence, and Integrity
Management Risk Identification, Assessment, Prevention, and Mitigation.
Advisory Bulletin ADB-09-02 Issued September 30, 2009
Potential for issues with Weldable Compression Coupling Installation.
Other Reference
Material
& Source
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 20: Knowledge of pipeline. a. Environmental factors, Page
63919
Distribution Integrity Management FAQs
• C.4.2 Can the DIMP plan incorporate by reference the operator’s procedures
from their other manuals or plans?
• C.4.a.1 The rule requires that an operator know its system. Must an operator
excavate simply to gather information about parts of its system where it may
not now have complete knowledge?
• C.4.a.2 There are some characteristics about an operator’s system that may
not be known during the development of the IM plan. What are PHMSA’s
expectations for filling those voids?
• C.4.a.3 Who qualifies as a “subject matter expert”?
• C.4.a.4 What data will be required to be collected for new gas pipelines
going in the ground?
• C.4.a.5 What comprises "reasonably available" information?
• C.4.a.6 Must an operator’s plan include the sources used to demonstrate an
understanding of its gas distribution system?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 3 Knowledge
GPTC provides a useful list of records from which information is gathered. In
addition to the information from the GPTC DIMP Appendix, the GPTC Guide
Material Appendix G-192-17 contains a list of explicit requirements for reports,
inspections, tests, written procedures, records and similar actions.
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Guidance
Information
1. The operator must have a written distribution integrity management plan
(DIMP) that contains procedures for developing and implementing each
requirement of §192.1007(a). The procedures must have adequate detail to
clearly describe the manner in which each requirement will be met. The
procedures need to provide a description of who, what, when, where, and how
the operator will implement the elements. Operators must follow their
procedures. The DIMP and any individual procedures documents should
include management approvals, origin date, and the effective date of the last
revision. For additional information, see the guidance section of §192.1005.
2. An operator must have knowledge of its natural gas distribution system
including, but not limited to, the following characteristics: location, material
composition, piping sizes, joining methods, construction methods, date of
installation, soil conditions (where appropriate), operating and design
pressures, history, operating experience performance data, condition of
system, and any other characteristics noted by the operator as important to
understanding its system. This information may be obtained from sources
including system maps, construction records, work management system(s),
geographic information system(s), corrosion records, and personnel who have
knowledge of the system (Subject Matter Experts)
3. The operator must have a list of the information sources used to develop the
DIMP.
4. The operator knowledge of the system should be focused on those
characteristics which are needed to assess threats, evaluate risks to the system
to identify risk reduction measures, and group facilities with like
characteristics. An operator must begin by reviewing the data that
characterizes its unique distribution system as the initial step in identifying
threats and assessing and prioritizing the threats. Characteristics evaluated by
the operator must allow the operator to identify facilities with known and
potential problems. For example, operators should examine the design
characteristic “joining method” to determine if their system contains
mechanically joined pipe that could be a threat to the integrity of the system.
5. Operators who transport gases other than natural gas need to describe in their
DIMP how the characteristics of the gas impact the threats and risk and
include the differences from natural gas.
6. The term “environmental factors” has caused some confusion. As clarified in
the DIMP Final Rule in response to Comment #20, environmental factors are
“necessary to assess the applicable threats and risk to gas distribution pipelines
and does not refer to consequences.” 74 Fed. Reg. 63906, 63919. The term
“environmental” as used in the rule does NOT refer to “EPA” type
environmental factors such as mercury regulators, PCBs, or contaminated soils
(which require remediation when removed). It does refer to operating
environment characteristics including but not limited to population density,
landslide, corrosive soil, valve placement, seismic zones, flood zones, areas
with wall-to-wall paving, frost impacts, geologic conditions, construction
activities (significance of near-by construction), wash outs, types of soils, etc.
Some of these factors will not apply to certain operators. An operator’s DIMP
must include information about the environmental factors reviewed but does
not need to describe the criteria they used to select them to develop the
knowledge of their system.
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Examples of a
Probable
Violation or
Inadequate
Procedures
7. The operator is required to have a list of the information sources used to develop
the DIMP to demonstrate that they have considered all reasonably available
records. All reasonably available records which provide information on a
significant impact on system integrity must be included.
8. Some historical data may be no longer applicable to the current condition of the
pipeline system. If the pipe was replaced, the data about the previous pipe may
no longer be relevant. Such data may be relevant where the circumstances (e.g.,
construction practices, coatings, backfill materials, pipe materials, environmental
conditions) of the pipe prior to replacement exist elsewhere and are relevant to
existing risks in the operator’s system. For example, if bare steel pipe has been
replaced, but some bare steel still exists in the system, then data concerning the
replaced pipe may still be relevant.
9. If an operator acquires a pipeline and the historical records were not obtained or
are not reasonably available, the records do not need to be recreated. However,
this missing data must be identified as such within the operator’s DIMP, and a
plan must be established for collection of relevant information.
10. Operators need to consider failures without a release to identify potential
threats, and this type of information is considered reasonably available. For
example, operators may evaluate where pressure regulators froze off and
where upsets in the system could have occurred.
11. For data identified by the operator as needed for a threat identification and risk
evaluation, there needs to be a process to identify facilities for which records are
missing, inaccurate, or incomplete.
12. Collecting additional data and improving existing data is only required to occur
as part of normal pipeline activities and over time. There must be a mechanism
for individuals performing normal pipeline activities to know what additional
data is needed.
13. Forms, recordkeeping procedures, data management systems and/or other
methods used to collect information related to the physical attributes and/or
operating and maintenance activities of distribution pipeline facilities should be
appropriately modified to provide for the collection of reasonable available
information. Personnel should be trained to properly collect and record the
needed information and use the required forms.
1. The operator does not have a procedure that covers the tasks required.
2. The operator fails to follow the written procedures.
3. Operator did not demonstrate that they have looked at all reasonably available
sources to find information from past design, operations, inspections, or
maintenance activities.
4. Operator did not specifically list which documents were used to assemble
knowledge of its system.
5. Operator does not gather or use reasonably available data on the entire pipeline
that could be relevant to performing their threat assessment, risk evaluation or
as needed to group like facilities.
6. DIMP did not identify the records containing the appropriate characteristics of
the pipeline’s operating conditions to assess each threat category and
subcategory to the operator’s pipeline.
7. DIMP did not identify the records containing the appropriate environmental
characteristics to assess each threat category and subcategory to the operator’s
pipeline.
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Examples of
Evidence
Other Special
Notations
8. There is no procedure for identifying needed missing, inaccurate or incomplete
data.
9. The operator has not identified missing, inaccurate or incomplete data.
10. The operator has identified missing, inaccurate or incomplete data but does not
have a procedure or plan to collect the missing data and information over time.
11. Operator failed to retain data on new pipeline installed.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated the documents used to develop knowledge of the system.
2. The list of documents used to develop knowledge of the system is inadequate in
identifying design, operating, or environmental characteristics of the pipeline
system.
3. Copies of applicable pages of the DIMP showing that the DIMP is not detailed
enough for an inspector to make a reasonable determination as to the accuracy
and thoroughness of the process.
4. Documented photographic evidence demonstrating the violation.
5. Documented oral and/or written statements from operator personnel.
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<<<PAGE 16>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(b)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing
and implementing the following elements:
* * * * *
(b) Identify threats. The operator must consider the following categories of
threats to each gas distribution pipeline: Corrosion, natural forces, excavation
damage, other outside force damage, material or welds, equipment failure, incorrect
operations, and other concerns that could threaten the integrity of its pipeline. An
operator must consider reasonably available information to identify existing and
potential threats. Sources of data may include, but are not limited to, incident and
leak history, corrosion control records, continuing surveillance records, patrolling
records, maintenance history, and excavation damage experience.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, Feb 1, 2011
Advisory Bulletin ADB-13-04 – Issued August 22, 2013
PHMSA advisory to alert all pipeline operators of a T.D. Williamson, Inc. (TDW)
Leak Repair Clamp (LRC) recall issued by TDW on June 17, 2013. The recall
covers all TDW LRCs of any pressure class and any size. The LRCs may develop a
dangerous leak due to a defective seal. Hazardous liquid and natural gas pipeline
operators should verify if they have any TDW LRCs subject to the recall by
reviewing their records and equipment for installation of these LRCs.
Advisory Bulletin ADB-13-03: Correction – Issued October 31, 2013
PHMSA is issuing an Advisory Bulletin to remind owners and operators of liquefied
petroleum gas (LPG) and utility liquefied petroleum gas (utility LP-Gas) plants that
although they must follow the American National Standards Institute/National Fire
Protection Association (ANSI/NFPA) standards 58 or 59, they must also follow
certain sections and requirements of Part 192.
Advisory Bulletin ADB-13-02 – Issued July 12, 2013
PHMSA is issuing this advisory bulletin to all owners and operators of gas and
hazardous liquid pipelines to communicate the potential for damage to pipeline
facilities caused by severe flooding. This advisory includes actions that operators
should consider taking to ensure the integrity of pipelines in case of flooding.
Page 15

<<<PAGE 17>>>

Advisory Bulletin ADB-12-05 – Issued March 23, 2012
PHMSA urges owners and operators to conduct a comprehensive review of their
cast iron distribution pipeline systems and replacement programs and to accelerate
pipeline repair, rehabilitation, and replacement of aging and high-risk pipe. In
addition ADB notes regulation requirement for natural gas distribution companies to
develop DIMP for pipelines owned, operated or maintained.
Advisory Bulletin ADB-12-03 – Issued March 6, 2012
PHMSA advisory bulletin to alert operators using Driscopipe® 8000 High Density
Polyethylene Pipe (Drisco8000) of the potential for material degradation.
Advisory Bulletin ADB-11-05 – Issued August 26, 2011
PHMSA advisory to remind owners and operators of gas and hazardous liquid
pipelines of potential for damage to pipeline facilities caused by the passage of
Hurricanes.
Advisory Bulletin ADB-11-04 – Issued March 20, 2012
Pipeline Safety: Potential for Damage to Pipeline Facilities Caused by Flooding.
Advisory Bulletin ADB-11-02 – Issued February 9, 2011
Pipeline Safety: Dangers of Abnormal Snow and Ice Build-Up on Gas Distribution
Systems.
Advisory Bulletin ADB-10-03 – Issued March 24, 2010 Pipeline Safety: Girth
Weld Quality Issues Due to Improper Transitioning, Misalignment, and Welding
Practices of Large Diameter Line Pipe.
Advisory Bulletin ADB-09-02 – Issued September 30, 2009
Potential for issues with Weldable Compression Coupling Installation
Advisory Bulletin ADB-08-02 – Issued March 4, 2008
Issues Related to Mechanical Couplings Used in Natural Gas Distribution Systems
Advisory Bulletin ADB-07-01 – Issued September 6, 2007
Updated Notification of the Susceptibility to Premature Brittle-like Cracking of
Older Plastic Pipe
Advisory Bulletin ADB-06-03 – Issued November 22, 2006
Notice to Operators of Natural Gas and Hazardous Liquid Pipelines to Accurately
Locate and Mark Underground Pipelines Before Construction-Related Excavation
Activities Commence
Advisory Bulletin ADB-05-05 – Issued August 10, 2005
Inspecting and Testing Pilot-Operated Pressure Relief Valves
Advisory Bulletin ADB-04-01 – Issued September 29, 2004
Hazards Associated with de-watering of pipelines
Page 16

<<<PAGE 18>>>

Other Reference
Material
& Source
Advisory Bulletin ADB-02-01 – Issued May 24, 2002
Notice to Operators of Natural Gas and Hazardous Liquid Pipelines To Encourage
Continued Implementation of Safe Excavation Practices
Advisory Bulletin ADB-97-05 – Issued November 12, 1997
Potential Failure of Check Valves Following Remanufacturing
Advisory Bulletin ADB-97-03 – Issued March 4, 1997
Potential Soil Subsidence on Pipeline Facilities
Advisory Bulletin ADB-95-02 – Issued August 9, 1995
Increased Pipeline Transportation Security Measures
Advisory Bulletin ADB-94-05 – Issued November 2, 1994
Pipelines Affected by Flooding
Alert Notice ALN-92-01 – Issued January 8, 1992
Lightning-induced electrical discharge from tracer wire to plastic pipe.
Alert Notice ALN-89-01 – Issued March 8, 1989
Update: Additional findings relative to factors contributing to operational failures of
pipelines constructed by ERW prior to 1970
Alert Notice ALN-87-01 – Issued March 13, 1987
Incident involving the fillet welding of a full encirclement repair sleeve on a 14"
API 5LX-52 pipeline; King of Prussia, PA 10/07/86 pipeline failure
Alert Notice ALN-86-02 – Issued February 26, 1986
Plastic Piping, Mechanical Coupling
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 21: Threat identification, b. Sources of information. Page
63920
Distribution Integrity Management FAQs
• C.4.b.1 Must an operator use a computer-based risk analysis model?
• C.4.b.2 Must each of the 8 threats be considered for every pipeline type?
• C.4.b.3 The DIMP requirements include knowing the condition of facilities
that are at risk for potential damage from external sources. Cross bores of gas
lines in sewers have been reported at 2-3 per mile in high risk areas –
predominately where trenchless installation methods were used for gas line
installs and where sewers and gas lines are in the proximity of each other.
Does the potential for cross bore of sewers resulting in gas lines intersecting
with sewers need to be determined?
• C.4.b.4 Are pipeline “overbuilds” a threat? Should the “other concerns”
threat category contain pipeline overbuilds (building put over a pipeline)?
Page 17

<<<PAGE 19>>>

Guidance
Information
• C.4.b.5 We used leak causes which we have experienced in the past to
identify threats. For example, washouts in our system have not caused leaks
in the past so washouts were not identified as a threat. Should washouts be
classified as a potential threat due to the possibility of coating damage?
• C.4.b.6 Since we have not experienced any issues with pre 1973 Aldyl "A”
pipe in the past, we did not subdivide plastic pipe in our risk evaluation. It is
a potential threat to us only because of other operators' experience. Should
we have treated it as an applicable threat?
• C.4.b.7 Must I consider historical leak data after a section of pipeline has
been replaced?
• C.4.b.8 We often replace a section of pipeline rather than repairing
individually the leaks in that section. In this case, must we record the number
and grade of leaks?
• C.4.b.9 We are experiencing problems in ranking potential threats since
some of the low frequency events have not occurred on our systems, to date.
We are concerned about mixing apples and oranges by assigning a frequency
or probability to a threat that has not occurred and ranking it along with
events that do have frequency. How should we account for low or no
frequency threats in evaluating and ranking risks?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 4 - Identify Threats
• Table 4.1 Sample Threat Identification Method
• Section 5.1 Evaluate and Rank Risk – General
1. The operator must have a written distribution integrity management plan (DIMP)
that contains procedures for developing and implementing each requirement of
§192.1007(b). The procedures must have adequate detail to clearly describe the
manner in which each requirement will be met. The procedures need to provide a
description of who, what, when, where, and how the operator will implement the
elements. Operators must follow their procedures. The DIMP and any individual
procedures documents should include management approvals, origin date, and
the effective date of the last revision. For additional information, see the
guidance section of §192.1005.
2. The threat identification process must meet the need of establishing a realistic
identification of the threats and provide a determination of whether their
frequency and level of significance require an action that goes beyond normal
operating practices. An understanding of threats and risks specific to an
operator’s system comes from analyzing the information in company’s
operations, maintenance, and inspection records, including, but not limited to,
the following: specific surveys, patrolling records, corrosion control records, and
leak and incident data.
3. Even if an operator concludes that a particular threat is not applicable to sections
of its pipeline, the basis for drawing such conclusions must be documented.
Operators may not discount or eliminate any existing or potential threat for a
Page 18

<<<PAGE 20>>>

subsystem without an adequate basis for doing so. This basis must consider
pipeline failure history, design, manufacturing, construction, operation, and
maintenance. Prior to exclusion of a potential threat, operators should perform
analysis of the “Other” leak cause data to ensure the potential threat has not been
experienced to date.
4. Unavailability of information is not justification for exclusion of a threat. Where
data are missing or insufficient, conservative assumptions may be used in the
risk assessment. Records must be maintained that identify how unsubstantiated
data are used, so that the impact on the variability and accuracy of risk analysis
results can be considered.
5. In order to consider the 8 primary threats, the operator must review the data on
the records which contain information they could use to determine the extent of
the problem caused by each threat. Perceptions of problems or lack of problems
need to be supported by available information.
6. Excavation damage must be included in the threats considered in the DIMP,
even if the operator has good external damage control experience and a thorough
damage prevention program. It is not acceptable for an operator to say that this
threat is dealt with outside of DIMP and therefore need not be included.
Excavation damage is always a potential threat, regardless of whether a specific
system/subsystem has experienced damage
7. Potential threats are threats where the operator has not necessarily experienced a
leak (i.e., release of gas) but they have conditions conducive to the threat (e.g.
atmospheric corrosion, hurricanes, flooding, excavation damage, materials with
known integrity issues). Examples include, but are not limited to, the following:
a. Trenchless technology used in the area – unknowingly bored thru sewer
or water lines
b. Future utility/road improvement projects
c. Discovery of a material not previously known to be in the system
d. Customers built structures over existing pipelines
e. Overpressurization events
f. Instances of pipe damage (including damage to tracer wire) that did not
result in a release
g. Pipe materials susceptible to brittle failure modes
8. Possible sources of information to consider when identifying potential threats
include past O&M procedures, purchase orders, material lists from old field
orders or standards, and information from industry sources (e.g., plastic pipe data
committee or PHMSA Advisory Bulletins. Information must include past
continuing surveillance records (192.613).
9. Many operators performed measures to reduce risk prior to the DIMP rule. If the
measures were effective, the operator may have not experienced any failures due
to the threat the measure addressed. The operator has prevented or mitigated a
potential threat, and these activities need to be included in the threat
identification and risk evaluation.
Page 19

<<<PAGE 21>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
1. The operator does not have a procedure that covers the tasks required.
2. The operator fails to follow the written procedures.
3. The procedures do not include a review of all of the 8 primary threats.
4. All of the 8 primary threats required by the rule were not adequately
considered and/or evaluated.
5. Multiple threats from within the 8 primary threat categories were not
adequately evaluated to characterize the operator’s system.
6. Specific threats were eliminated from consideration without adequate
justification.
7. Operator does not use relevant operating and maintenance records in
evaluating each threat.
8. Elimination of a threat is not sufficiently documented.
9. Procedures did not adequately describe the requirements for identifying and
evaluating threats.
10. Procedures do not contain sufficient detail and clarity to allow anyone using
them to understand and follow them.
11. Operator did not use reasonable or appropriate subdivision of threats to
identify existing and/or potential threats.
12. Identification of threats relies on information from Subject Matter Experts who
lack appropriate knowledge and experience.
13. The procedures do not include a review of the potential threats.
14. Operator did not use all reasonably available records to identify threats.
15. Operator’s DIMP did not consider data from external sources to identify
potential threats.
16. DIMP did not identify the records containing the appropriate characteristics of
the pipeline’s design to assess each threat category and subcategory to the
operator’s pipeline.
17. The operator’s definition of ‘excavation damage,’ in its written DIMP or in
how the DIMP is implemented, does not include non-leak damages including
damage to coatings, supports, cathodic protection or housings.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Reasonably available external information (e.g., Advisory Bulletin) identifying a
threat applicable to the operator’s system that was not considered in developing
the DIMP.
3. Documented photographic evidence demonstrating the violation.
4. Documented oral and/or written statements from operator personnel.
Page 20

<<<PAGE 22>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(c)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing
and implementing the following elements:
* * * * *
(c) Evaluate and rank risk. An operator must evaluate the risks associated with
its distribution pipeline. In this evaluation, the operator must determine the relative
importance of each threat and estimate and rank the risks posed to its pipeline. This
evaluation must consider each applicable current and potential threat, the likelihood
of failure associated with each threat, and the potential consequences of such a
failure. An operator may subdivide its pipeline into regions with similar
characteristics (e.g., contiguous areas within a distribution pipeline consisting of
mains, services and other appurtenances; areas with common materials or
environmental factors), and for which similar actions likely would be effective in
reducing risk.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, Feb 1, 2011
Advisory Bulletin ADB-12-05 – Issued March 23, 2012
PHMSA urges owners and operators to conduct a comprehensive review of their
cast iron distribution pipeline systems and replacement programs and to accelerate
pipeline repair, rehabilitation, and replacement of aging and high-risk pipe. Also,
notes regulation requirements for natural gas distribution companies under DIMP.
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 22: Risk assessments. Page 63920
Distribution Integrity Management FAQs
• C.4.c.1 What are the key things an operator should be focusing on when
developing an effective risk assessment methodology?
• C.4.c.2 From which date are operators required to collect data for their plan?
• C.4.c.3 How are newly identified threats to the system's integrity expected to
be handled in an operator's DIMP plan?
• C.4.c.5 Do multiple threats need to be considered for each facility grouping?
Do all threats need to be in one relative risk ranking?
• C.4.c.6 What is expected of multi-state operator in regards to a risk ranking?
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<<<PAGE 23>>>

• C.4.c.7 We plan to perform a risk ranking by state. Regardless of the
outcome of the risk ranking, we will not decrease the historical level of
expenditures in each state. However, a system wide risk ranking will be used
to determine where expenditures beyond historical levels will be allocated.
Does that meet the intent of the state by state risk ranking?
• C.4.b.9 We are experiencing problems in ranking potential threats since
some of the low frequency events have not occurred on our systems, to date.
We are concerned about mixing apples and oranges by assigning a frequency
or probability to a threat that has not occurred and ranking it along with
events that do have frequency. How should we account for low or no
frequency threats in evaluating and ranking risks?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 5 – Evaluate and Rank Risk
Guidance
Information
1. The operator must have a written distribution integrity management plan
(DIMP) that contains procedures for developing and implementing each
requirement of §192.1007(c). The procedures must have adequate detail to
clearly describe the manner in which each requirement will be met. The
procedures need to provide a description of who, what, when, where, and
how the operator will implement the elements. Operators must follow their
procedures. The DIMP and any individual procedures documents should
include management approvals, origin date, and the effective date of the
last revision. For additional information, see the guidance section of
§192.1005.
2. Once threats have been identified, the operator must develop a method to
assess and prioritize the associated risks in order to address those of
greatest concern first.
3. In performing a risk analysis, it is important to note that risk is the
likelihood of an event occurring times the consequence of that event. An
event that is highly likely and also has a high public safety consequence
constitutes an event of greatest concern. An unlikely event having minimal
consequence may not justify extraordinary precautions. An unlikely event
that could have very high consequences may justify additional precautions
as distribution incidents are often events that are of low likelihood but of
high consequence.
4. Based on the analysis, the operator may consider additional segmentation of
its distribution system in order to focus on certain portions of the system for
risk evaluation and risk management actions. Segments exhibiting similar
attributes and operational and maintenance history should be grouped
together for application of measures to reduce risk. If the subsystems are too
large and average numbers are used for the system as a whole, higher risk
pipe may not be adequately identified.
5. The operator should have developed weighting factors for each threat
specific to their system(s) dependent upon their unique operating
environment.
6. The final risk score must take into account both likelihood and
consequence factors. The operator must identify both the likelihood
Page 22

<<<PAGE 24>>>

(frequency) and the consequences (potential impact) of failures due to each
threat/subcategory of threat for each system to determine the relatively
risk. When risk reaches a threshold set by the operator measures to reduce
risk may be needed to address the threat.
a. Examples of Likelihood factors:
i. Leaks per mile of main by material type
ii. Leaks per unit of services (based on size of operator)
iii. Amount of construction activity in area
iv. Number of hits per unit locate tickets
b. Examples of Consequence factors:
i. Operating pressure
ii. Population density (“downtown” versus rural)
iii. Impact of loss of supply
iv. Number of customers affected
v. Proximity to structures and critical facilities (e.g. schools and
hospitals)
vi. Proximity to known groups of people with limited mobility
(usually institutionalized)
7. Characterizing a distribution system into logical units facilitates the process
of prioritizing risks. If subdivision is warranted, the distribution system must
be divided into a sufficient number of distribution segments in order to
effectively assess the threats to the system. An operator can manage risks by
addressing significant threats to the specific sections. To the extent that a
threat is significant, it may be prevalent throughout the operator’s system or
it may exist only in certain specific (localized) sections of the system.
8. It is inadequate for an operator to conclude that a pipeline is not subject to
any particular threat or threats, based solely on the fact that it has not
experienced a pipeline failure that has been attributed to the threat(s). An
operator also must consider potential threats.
9. The operator must have a process for validating the results of the risk
ranking, and the operator must follow the procedure. The results generated
by the model should agree with the consensus of the validation group. If
the analysis results do not identify known risk factors, the evaluation
model/method must be questioned, analyzed, and if necessary, revised.
The verification process should compare the results of the risk evaluation
to operator and industry experience (e.g., Advisory Bulletins, PPDC
reports, vendor notifications). Methods of validation may include:
a. Team review of results
b. Subject Matter Expert reviews
Examples of a
Probable
Violation or
Inadequate
Procedures
1. The operator does not have a procedure that covers the tasks required.
2. The operator fails to follow the written procedures.
3. Operator has not conducted a risk assessment
4. A comprehensive risk analysis process was not adequately developed.
5. All portions of pipelines were not included in the risk analysis
6. The process did not adequately consider risk factors unique to the operator’s
systems when using a "standard" risk model
7. The risk analysis process was not adequately documented
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<<<PAGE 25>>>

8. The risk analysis process did not adequately consider all required risk factors
9. Risk weighting factors were not adequately validated or justified
10. Likelihood or consequence of pipeline failures was not adequately considered
in the risk analysis
11. Explicit guidelines and process formality were not provided to support use of
Subject Matter Experts in risk analysis
12. Operator-specific leak/failure history and other operating experience were not
adequately considered in the in risk analysis
13. Field input was not adequately incorporated in the risk analysis
14. General or default values were inappropriately used where data has not been
collected
15. Poor quality data was used in the risk analysis
16. The basis for risk model scores was not adequately documented
17. The DIMP does not contain procedures for determining the applicable
potential threats, the likelihood of the failure, and the potential consequence of
the failure.
18. Operator subdivided its system into regions that do not have similar
characteristics and for which similar actions are likely to be effective in
reducing risk.
19. Subdivision combines systems with differing characteristics and for which
similar actions are not likely to be effective in reducing risk.
20. Subdivision by operating system based solely on geographic location and not
on system characteristics.
21. Risk analysis results did not adequately identify dominant risk factors
22. Risk analysis results were not adequately aggregated such that segment-
specific risk measures were obscured
23. The impact of uncertainties on the results were not adequately considered
24. Risk assessment does not prioritize pipeline segments
25. The process the operator describes in the procedure is not sufficiently
documented so an inspector can make a reasonable determination as to the
accuracy and thoroughness of the process.
26. Procedures do not contain adequate detail and clarity to allow for a clear
understanding of the process.
27. Risk calculation does not consider the likelihood and consequences of current
and potential threats.
28. Risk calculation does not determine the relative importance of threats.
29. Operator did not validate the results of the risk evaluation.
30. The selection process of the Subject Matter Experts was flawed.
31. Operator history is not consistent with the output of the risk evaluation model.
32. Information provided by validation team members do not concur with results,
and these differences were not evaluated and addressed.
33. The operator has no documentation validating the ranking results.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
Page 24

<<<PAGE 26>>>

Examples of
Evidence
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Printout of operators risk ranking results.
3. Portions of the documentation of a commercial product that demonstrate it
should not have been used in the manner the operator used it.
4. Documented photographic evidence demonstrating the violation.
5. Documented oral and/or written statements from operator personnel.
Other Special
Notations
Page 25

<<<PAGE 27>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(d)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing
and implementing the following elements:
* * * * *
(d) Identify and implement measures to address risks. Determine and
implement measures designed to reduce the risks from failure of its gas distribution
pipeline. These measures must include an effective leak management program
(unless all leaks are repaired when found).
192-113, 74 FR 63906, Dec. 4, 2009
192-116, FR 76 5494, Feb 1, 2011
Advisory Bulletin ADB-13-01 – Issued January 30, 2013
PHMSA advisory to notify the owners and operators of gas and hazardous liquids
pipelines systems and LNG facilities, that, as required by the Pipeline Safety,
Regulatory Certainty, and Job Creation Act of 2011, the agency will issue a
proposed rule to revise telephonic reporting regulations to establish specific time
limits for telephonic or electronic notice of accidents and incidents involving
pipeline facilities to the National Response Center (NRC). PHMSA will issue a
proposed rule at a later date, but encourages owners and operators of the gas and
hazardous liquids pipeline systems and LNG facilities, as a practice, to report such
accidents and incidents within one hour of confirmed discovery.
Advisory Bulletin ADB-12-09 – Issued October 11, 2012
PHMSA advisory to remind operators of gas, hazardous liquid, and liquefied natural
gas pipeline facilities that operators should immediately and directly notify the
Public Safety Access Point (PSAP) that serves the communities and jurisdictions in
which those pipelines are located when there are indications of a pipeline facility
emergency.
Advisory Bulletin ADB-10-08 – Issued November 3, 2010
Pipeline Safety: Emergency Preparedness Communications.
Advisory Bulletin ADB-01-02 – Issued October 4, 2000
Emergency Plans and Procedures for Responding to Multiple Gas Leaks and
Migration of Gas into Buildings.
Advisory Bulletin ADB-99-04 – Issued August 23, 1999
Directional Drilling and Other Operations Conducted in Proximity to Underground
Pipeline Facilities.
Page 26

<<<PAGE 28>>>

Advisory Bulletin ADB-94-03 – Issued February 23, 1994
Pipelines in a common right-of-way, parallel right-of-way, or cross a rail
right-of-way.
Advisory Bulletin ADB-94-02 – Issued January 19, 1994
Valve Location and Spacing.
Advisory Bulletin ADB-93-03 - July 29, 1993
Advisory to Owners and Operators of Hazardous Liquid and Natural Gas Pipeline
Facilities in Areas of Flooding.
Alert Notice ALN 91-04 - Issued November 20, 1991
NTSB recommendations S P-91-3/P-91-4, 03/15/90 NY leak/explosion: Requiring
operators to extend their public education/emergency preparedness programs.
Alert Notice ALN 89-02 - Issued April 13, 1989
Results of OPS-conducted investigation of the San Bernardino, CA, 05/12/89 train
derailment; each gas/liquid operator should test check valves.
Other Reference
Material
& Source
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 14: Leak monitoring. Page 63917
• Comment Topic 16: IM program evaluation and improvement. Page 63918
• Comment Topic 23: Performance measures. Page 63922
Distribution Integrity Management FAQs
• C.4.d.1 Must an operator implement additional or accelerated actions to
reduce risk from its pipeline?
• C.4.d.2 How will small operators, with limited staff, be able to implement
the requirements for risk analysis and selection of risk control measures?
• C.4.d.3 If an operator already has a leak management program, does the
operator have to implement a new program in response to this regulation?
• C.4.d.4 Why not simply require operators of gas distribution pipelines to
replace old pipe?
• C.4.d.5 What kind of issues should an operator focus on in addressing the
threat of Excavation Damage as part of its DIMP Plan?
• C.4.d.6 In order to eliminate the need for a leak management program, how
quickly would an operator need to repair all leaks?
• C.4.d.7 Can the installation of excess flow valves be a method to mitigate
risks?
• C.4.d.8 What criteria should an operator use to identify when a measure to
reduce risk is needed?
• C.4.d.9 Do all actions operators take to reduce risk need to be included in
their DIMP plan?
• C.4.d.10 We have heard that operators will be required to implement specific
measures to reduce risk. Can you describe the required actions?
• C.4.d.11 How can an operator demonstrate that their leak management
program is effective?
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<<<PAGE 29>>>

Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 6 – Identify and Implement Measures to Address Risks
Guidance
Information
1. The operator must have a written distribution integrity management plan (DIMP)
that contains procedures for developing and implementing each requirement of
§192.1007(d). The procedures must have adequate detail to clearly describe the
manner in which each requirement will be met. The procedures need to provide a
description of who, what, when, where, and how the operator will implement the
elements. Operators must follow their procedures. The DIMP and any individual
procedures documents should include management approvals, origin date, and
the effective date of the last revision. For additional information, see the
guidance section of §192.1005.
2. The design and operation of distributions systems is so diverse that no single risk
control method is appropriate in all cases. The operator must have a documented
list of measures to reduce risk they are planning on implementing. Risk can be
reduced by implementing risk control practices that decrease the likelihood of
the event occurring, or mitigate the consequence of the event.
3. In considering gas distribution systems, it is essential to remember that the
consequences of a failure in a distribution system may take a protracted period of
time to develop (e.g., gas migration). During this period of time, certain
techniques can be used to detect the failure and actions can be taken to address
the failure before it results in an incident.
4. The process for identifying additional measures must be based on identified
threats to each pipeline segment and the risk analysis. Clearly, facilities and
groups of facilities that represent the highest risk are the most important
candidates for measures to reduce risk. Therefore, the operator must ensure that
the measures selected to reduce risk that are to be implemented with the highest
priority are for the highest ranked segments/facilities as indicated by the risk
analysis.
5. Operators were required to implement and schedule measures to address the
prominent risks identified in their risk evaluation by August 2, 2011. This
process is an ongoing one, and revisions are appropriate and expected. Some
measures can be implemented immediately. Others (e.g., pipe replacement) may
require budget approval and allocation of resources; operators should have
considered this and scheduled major measures appropriately in their DIMP.
Operators must provide a schedule of when measures to reduce risk will be
taken, and to act as quickly as practical after identifying the need for such risk
controls. In situations where lengthy periods are required for implementation,
operators should determine if there are relatively simple, interim measures that
can be taken to reduce risk while major projects are being implemented.
Operators are expected to promptly identify the need for measures in the event a
new risk is identified.
6. The operator must be able to produce records demonstrating that a risk measure
has been implemented or is scheduled to be implemented. Scheduled measures
should be justified based on complexity of the implementation (considerations:
procurement, need for additional resources, coordination with local jurisdictions,
training of qualified personnel, etc.). The procedure must detail the basis for
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Examples of a
Probable
Violation or
Inadequate
Procedures
decisions and be documented as part of the operator’s DIMP. Decisions include:
a. Which measures to reduce risk to implement
b. Schedule for implementation of the measure(s) to reduce risk
c. Performance metrics for the measures to reduce risk
7. The risk drivers for each high risk segment must be considered in determining
the most effective mitigation option. The operator must understand the risk
analysis results sufficiently to determine which factors affect risk the most (i.e.,
the "risk drivers") and select preventive and mitigative measures that affect the
dominant risk factors. The use of gross or overall risk scores for determining
measures to reduce risk, while important, may not contain enough information to
identify the most effective candidate measures for reducing risk. While the
evaluation may or may not result in any actions being implemented, it is
important that the operator’s process gives priority to the highest risk portions of
the pipeline.
8. Leak data must be evaluated to identify trends in leaks for pipe of different
attributes. A leak management program is effective if hazardous leaks are
repaired promptly and all other leaks are graded, scheduled for repair or
monitored. The leak management system must provide for a recheck of leak
repairs after it is repaired before the leak is cleared.
9. “Repaired when found” means that all leaks are treated as hazardous leaks, and
either repaired promptly or continuously monitored by operator personnel until
repaired. Repair within a delayed period after discovery (e.g., 1 month) is not
“repaired when found.” Operators who do not repair all leaks promptly or
continuously monitor the leaks until repaired must have a leak management
program.
10. An effective leak program includes an audit/field verification to ensure that
individuals assigned to evaluate leaks are classifying or grading leaks
consistently across the system. The procedures should include requirements for
periodic field evaluation of active leaks to ensure that the leak has not become
more severe requiring a classification or grading change. Routine self-
assessment of the overall leak management plan should be performed by the
operator. The operator should take actions if inconsistencies are identified.
1. The operator does not have a procedure that covers the tasks required.
2. The operator fails to follow the written procedures.
3. A comprehensive risk analysis process was not adequately implemented.
4. The procedure does not require identification of measures to reduce risk.
5. The risk mitigative measures identified by the operator do not specifically
address identified risk factors.
6. The procedure does not require a schedule for implementation of measures to
reduce risk.
7. The procedure for identifying additional measures is not based on identified
threats to each pipeline segment and the risk analysis.
8. The procedure for evaluating additional preventive and mitigative measures
does not adequately describe the method used to assure the appropriate
selection of the risk mitigative measures intended to reduce risk for a specific
threat.
9. Procedures do not contain adequate detail or clarity to allow individuals that
were not previously involved in the process to perform the task.
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<<<PAGE 31>>>

Examples of
Evidence
Other Special
Notations
10. The process did not adequately require a documented justification for
decisions regarding additional preventive and mitigative measures.
11. The DIMP does not provide a process to implement the mitigative measures.
12. A schedule for implementation of mitigative measures is not provided.
13. Measures to reduce risk have not been performed according to operator’s
procedure.
14. Operator has not identified measures to reduce risk when required by their risk
evaluation.
15. Operator has not kept records demonstrating implementation of measures to
reduce risk.
16. The operator cannot produce documentation of measures already in progress.
17. All required risk factors were not adequately considered in the preventive and
mitigative evaluation process.
18. The impact of preventive or mitigative actions on risk was not adequately
evaluated.
19. Risk mitigative measures housed in other operator programs were either not
included or referenced in the DIMP.
20. Leaks graded as non-hazardous are becoming hazardous leaks before repair,
and the operator has not self-assessed and made appropriate adjustments to its
leak management program.
21. The operator is not rechecking leaks within the scheduled time period.
22. The operator has not evaluated the leak program to determine if it is effective.
23. The operator has not assured consistency in leak grading across the system.
24. The procedure is not sufficiently documented to allow an inspector to make a
reasonable determination as to the accuracy and thoroughness of the process.
25. Procedures do not contain sufficient detail and clarity to allow anyone using
them to perform the task.
26. A leak management program was either not included or not referenced in the
DIMP. (Not applicable if an operator repairs all leaks when found).
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Copies of the risk evaluation demonstrate that measures to reduce risk were
needed but not scheduled.
3. Record indicating that the operator is not making progress in implementing
measures to reduce risk.
4. Record indicating the operator is not adequately following the leak management
program (records indicating that monitoring deadlines are not being met, repairs
are exceeding deadlines, etc.)
5. Documented photographic evidence demonstrating the violation
6. Documented oral and/or written statements from operator personnel.
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<<<PAGE 32>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(e)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing
and implementing the following elements:
* * * * *
(e) Measure performance, monitor results, and evaluate effectiveness.
(1) Develop and monitor performance measures from an established baseline
to evaluate the effectiveness of its IM program. An operator must consider the
results of its performance monitoring in periodically re-evaluating the threats and
risks. These performance measures must include the following:
(i) Number of hazardous leaks either eliminated or repaired as required by
§192.703(c) of this subchapter (or total number of leaks if all leaks are repaired
when found), categorized by cause;
(ii) Number of excavation damages;
(iii) Number of excavation tickets (receipt of information by the underground
facility operator from the notification center);
(iv) Total number of leaks either eliminated or repaired, categorized by
cause;
(v) Number of hazardous leaks either eliminated or repaired as required by
§192.703(c) (or total number of leaks if all leaks are repaired when found),
categorized by material; and
(vi) Any additional measures the operator determines are needed to evaluate
the effectiveness of the operator's IM program in controlling each identified threat.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, Feb 1, 2011
Advisory Bulletin ADB-12-10 – Issued November 29, 2012
PHMSA is issuing this Advisory Bulletin concerning operator integrity management
program evaluation using meaningful metrics.
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 23: Performance measures. Page 63921
Distribution Integrity Management FAQs
• C.4.e.1 Why has PHMSA selected the performance measures that it has for
periodic reporting?
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<<<PAGE 33>>>

• C.4.e.2 Does every measure to address risk require a performance measure?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 7 – Measure performance, monitor results and evaluate effectiveness
Guidance
Information
1. The operator must have a written distribution integrity management plan (DIMP)
that contains procedures for developing and implementing each requirement of
§192.1007(e). The procedures must have adequate detail to clearly describe the
manner in which each requirement will be met. The procedures need to provide a
description of who, what, when, where, and how the operator will implement the
elements. Operators must follow their procedures. The DIMP and any individual
procedure documents should include management approvals, origin date, and the
effective date of the last revision. For additional information, see the guidance
section of §192.1005.
2. An operator must have provisions for measuring integrity management program
effectiveness. The operator’s program documentation should identify that these
measures are to be reviewed and the frequency at which they will be reviewed.
3. Operators must develop and monitor performance measures from an established
baseline to evaluate the effectiveness of its IM program. Program
documentation must include the process by which operators establish a baseline
measurement for each performance measure from which to evaluate changes.
Program documentation must specify that the measures are to be taken and
identify the specific dates the measures should cover.
4. Threat-specific measures will only apply if the operator has determined that
measures to reduce risk are needed. If it is a new performance measure, the
operator may only have one data point and then will collect more data in the
future from which to evaluate changes. Operators may not have historical data to
establish a baseline for all performance measures. In these cases, the operator
must have a plan for collecting the data going forward to establish that baseline.
5. The purpose of the excavation damage performance measure for reporting the
number of excavation tickets is to normalize excavation damage information in
order, for example, to help determine whether reduced excavation damages are a
result of improved damage prevention programs or less construction
(excavation) activity. This measure, by itself, is not informative of the
effectiveness of an operators DIMP program, and an operator need not establish
a baseline for this element. Normalization is necessary because changes in the
amount of construction activity will affect the number of excavation damages
but are outside the control of an operator’s IM program. Analyses will likely
normalize per 1000 tickets but this is a simple arithmetic adjustment if the basic
data is available.
6. Each implemented risk reduction measure or group of measures to reduce risk
must have a performance measure associated with it that is designed to monitor
its effectiveness. Monitoring the effectiveness of measures to reduce risk allow
an operator to make substantiated determinations as to the adequacy of the
implemented measure to reduce risk and whether the measure to reduce risk
should be continued, revised, or cancelled.
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<<<PAGE 34>>>

7. Performance measures should reflect the purpose of the DIMP or specific risk
control practice. Performance measures should be something that can be
counted, graphed and validated. An operator need not adopt all possible
performance measures. It would be acceptable for the operator to select “a
critical few” measurements. There are often decreasing returns as measurements
are added, and too many measurements can overwhelm the measurement system.
8. Operators should establish trigger points or thresholds to prompt them to review
the effectiveness of their risk reduction measures. Operators may determine
through the reviews that the risk reduction measure must be changed or that
additional measures are needed.
Examples of a
Probable
Violation or
Inadequate
Procedures
1. The operator does not have a procedure that covers the tasks required.
2. The operator fails to follow the written procedures.
3. Operator does not have threat-specific performance metrics when needed.
4. The process the operator describes in the procedure is not sufficiently
documented so an inspector can make a reasonable determination as to the
accuracy and thoroughness of the process.
5. Procedures do not contain sufficient detail and clarity to allow anyone using
them to understand and follow them.
6. Operator lacks a plan to establish a baseline for performance measures where
historical data for a baseline does not exist.
7. Operator does not include an explanation of how the effectiveness of measures
to reduce risk will be measured.
8. Performance measures selected will not measure effectiveness of the measure
implemented to reduce risk.
9. Performance measures indicate that a risk reduction measure is not effective,
but the operator has not taken actions to revise/replace the measure.
10. Operator did not collect performance measure data.
11. Operator did not analyze the performance measure data to monitor the
progress of the risk reduction measure.
12. Operator did not evaluate the data to determine if the measure to reduce risk
was effective.
13. Performance measures used by the operator did not include number of
excavation tickets, number of leaks, or number of hazardous leaks.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
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<<<PAGE 35>>>

Examples of
Evidence
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Copies of operator records of performance measures, or other associated
documentation, which demonstrates that a risk reduction measure is not
effective.
3. Copies of operator records of performance measures, or other associated
documentation, which demonstrates that a risk reduction measure is not effective
and corrective actions have not been taken.
4. Documentation demonstrating the Operator did not collect or evaluate
performance measure data.
5. Documented photographic evidence demonstrating the violation.
6. Documented oral and/or written statements from operator personnel.
Other Special
Notations
Page 34

<<<PAGE 36>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(f)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing and
implementing the following elements:
* * * * *
(f) Periodic Evaluation and Improvement. An operator must reevaluate threats and
risks on its entire pipeline and consider the relevance of threats in one location to
other areas. Each operator must determine the appropriate period for conducting
complete program evaluations based on the complexity of its system and changes
in factors affecting the risk of failure. An operator must conduct a complete
program re-evaluation at least every five years. The operator must consider the
results of the performance monitoring in these evaluations.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, 76 FR 5494, Feb 1, 2011
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 16: IM program evaluation and improvement. Page 63917
Distribution Integrity Management FAQs
• C.4.f.1 How often does an operator need to evaluate its program?
• C.4.f.2 What constitutes a periodic evaluation?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 8 – Periodic Evaluation and Improvement
1. The operator must have a written distribution integrity management plan
(DIMP) that contains procedures for developing and implementing each
requirement of §192.1007(f). The procedures must have adequate detail to
clearly describe the manner in which each requirement will be met. The
procedures need to provide a description of who, what, when, where, and how
the operator will implement the elements. Operators must follow their
procedures. The DIMP and any individual procedures documents should
include management approvals, origin date, and the effective date of the last
revision. For additional information, see the guidance section of §192.1005.
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<<<PAGE 37>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
2. An operator must complete an evaluation of its distribution integrity
management program periodically to monitor its effectiveness in assessing
distribution integrity and addressing identified threats. Program evaluation is
performed to confirm that the essential elements of the process are identified,
implemented and effective. In addition, threats and their priorities may change
over time as conditions change or as mitigation projects are completed.
3. The period for the evaluation of program effectiveness must be as frequent as
needed to assure distribution system integrity, but cannot exceed five years
(rule requirement). This evaluation period must be determined by the operator
and included in its written integrity management program. The time frame for
evaluation of individual internal performance measures may be different. The
periodic review of the written integrity management program will include an
evaluation of the appropriateness of these operator established intervals.
4. The evaluation of program effectiveness should include the following items to
determine if modifications to the program need to be made:
a. Risk prioritization results
b. Risk control practices
c. Failure analysis results
d. Performance measures
5. The method of program evaluation could range from a formal audit of the
program to a simple review of the above items by a subject matter expert,
based on the needs and complexity of the program.
6. Corrective actions taken by an operator to improve the integrity management
program must be documented and monitored for effectiveness.
7. The periodic evaluation must specifically relate to the threat assessment, risk
evaluation, measures to reduce risk, and performance measures. These reviews
must examine the effectiveness of the measure(s) to reduce risk and its specific
performance measure(s) with recommendations for improvement where
necessary.
8. Results of a periodic review must include the appropriate specificity to
identify improvements, and generic statements about implementing
improvements are not acceptable.
Evaluation
1. The operator does not have a procedure that covers the tasks required.
2. The operator failed to follow the written procedures.
3. Adequate procedures were not developed for conducting IM program
effectiveness evaluations
4. The procedure did not identify the frequency of the periodic evaluation.
5. Operator did not conduct a program re-evaluation at least every five years.
6. The procedure did not adequately include reviews or audits of IM programs
7. An operator's DIMP evaluation process does not specifically address the
means (methods) the operator implemented to track DIMP performance or the
procedure does not have specific frequencies (time frames) at which the
operator must track DIMP performance.
8. An operator's DIMP evaluation procedure does not assess whether the DIMP
is effective in reducing risk.
9. An operator's DIMP evaluation process does not provide the operator
information on implementing improvements in its DIMP effectiveness based
on findings from the evaluation.
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<<<PAGE 38>>>

Examples of
Evidence
Other Special
Notations
10. The operator's evaluation process is not based on sound and repeatable
principles or is not sufficiently documented so an inspector can make a
reasonable determination as to the accuracy and thoroughness of the process.
Improvement
1. An operator did not change its DIMP, as required to address information
obtained through annual reviews, program evaluations, or whenever any
change occurs that would materially alter any of the elements in the DIMP.
2. An operator did not actually make the changes to the DIMP or did not
implement the changes to the DIMP when and where the program evaluation
identified changes were required.
3. An operator did not thoroughly document the changes including the purpose,
content, and date completed.
4. The process the operator describes in the procedure is not sufficiently
documented so an inspector can make a reasonable determination as to the
accuracy and thoroughness of the process.
5. Procedures do not contain sufficient detail and clarity to allow anyone using
them to perform the task.
Implementation
1. A DIMP program evaluation was not adequately performed and/or the results
were not adequately documented
2. Adequate actions were not identified to improve the DIMP based on a review
of the evaluation
3. Actions identified by the DIMP program evaluation were not adequately
implemented
4. Response to performance measures indicating poor performance was
inadequate
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable DIMP pages supporting any of the violations discussed
above either separately or in combination.
2. Copies of an operator's procedure showing it does not meet the specified
requirements
3. Documentation demonstrating the Operator did not perform a DIMP Program
Evaluation.
4. Documentation demonstrating the Operator did not react to the results of a DIMP
Program Evaluation.
5. Documented photographic evidence demonstrating the violation.
6. Documented oral and/or written statements from operator personnel.
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<<<PAGE 39>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1007(g)
What are the required elements of an integrity management plan?
A written integrity management plan must contain procedures for developing and
implementing the following elements:
* * * * *
(g) Report results. Report, on an annual basis, the four measures listed in paragraphs
(e)(1)(i) through (e)(1)(iv) of this section, as part of the annual report required by
§191.11. An operator also must report the four measures to the state pipeline safety
authority if a state exercises jurisdiction over the operator’s pipeline.
192-113, 74 FR 63906, Dec. 4, 2009
192-116, FR 76 5494, Feb 1, 2011
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 26: Annual Report Form. Page 63923
Distribution Integrity Management FAQs
• C.4.g.1 When must operators start collecting and maintaining records with
data needed for performance measures?
• C.4.g.2 When are performance measures due on Annual Reports?
• C.4.g.3 Can PHMSA further define the number of excavation tickets on the
new form?
• C.4.g.4 For municipal operators or joint utility operators, should the number
of excavation tickets include all excavation tickets or just those sent to the
gas department?
• C.4.g.5 Are multiple tickets for a single job counted as a single excavation
ticket?
• C.4.g.6 What if the excavation damage occurs on an excavation with no
ticket?
• C.4.g.7 We have a lot of steel risers which can be tightened to eliminate
leaks. We have not reported these on Form 7100 in PART C - TOTAL
LEAKS AND HAZARDOUS LEAKS ELIMINATED/REPAIRED
DURING YEAR in the past. Are these leaks considered reportable leaks per
DIMP, and should this threat be considered in a DIMP plan?
Page 38

<<<PAGE 40>>>

Guidance
Information
Examples of a
Probable
Violation or
Inadequate
Procedures
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 9 – Report Results
1. The operator must have a written distribution integrity management plan (DIMP)
that contains procedures for developing and implementing each requirement of
§192.1007(g). The procedures must have adequate detail to clearly describe the
manner in which each requirement will be met. The procedures need to provide a
description of who, what, when, where, and how the operator will implement the
elements. Operators must follow their procedures. The DIMP and any individual
procedures documents should include management approvals, origin date, and
the effective date of the last revision. For additional information, see the
guidance section of §192.1005.
2. The operator must measure and report the following measures on an annual
basis:
(i) Number of hazardous leaks either eliminated or repaired as required by
§192.703(c) of this subchapter (or total number of leaks if all leaks are
repaired when found), categorized by cause;
(ii) Number of excavation damages;
(iii) Number of excavation tickets (receipt of information by the
underground facility operator from the notification center);
(iv) Total number of leaks either eliminated or repaired, categorized by
cause;
3. Evidence that the appropriate regulatory authority has been notified in
accordance with the various requirements of the Rule must be retained by the
operator, and the date of notification and the method of notification should be
apparent. The use of electronic notification is preferred; therefore such
electronic records are acceptable.
1. The operator does not have a procedure that covers the tasks being performed.
2. The operator fails to follow the written procedures.
3. The operator’s procedures did not submit a report on the required performance
measures.
4. The operator’s procedures do not include all the measures specified by the Rule.
5. Operator failed to submit the required report on an annual basis pursuant to
§191.11.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement tool
to address these issues would be a Notice of Amendment and not a Notice of Probable
Violation or a Warning Letter. Section 3 of the Enforcement Procedures provides guidance
on selecting the appropriate enforcement action.
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<<<PAGE 41>>>

Examples of
Evidence
1. Copies of an operator's procedure showing it does not meet the specified
requirements.
2. Documented photographic evidence demonstrating the violation.
3. Documented oral and/or written statements from operator personnel.
4. Record demonstrating that required reporting was not performed in a timely
manner.
Other Special
Notations
Page 40

<<<PAGE 42>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§§192.1009, 191.12
192.1009 What must an operator report when a mechanical fitting fails?
191.12 Distribution Systems: Mechanical Fitting Failure Reports
§192.1009 What must an operator report when a mechanical fitting fails?
(a) Except as provided in paragraph (b) of this section, each operator of a
distribution pipeline system must submit a report on each mechanical fitting failure,
excluding any failure that results only in a nonhazardous leak, on a Department of
Transportation Form PHMSA F–7100.1–2. The report(s) must be submitted in
accordance with §191.12.
(b) The mechanical fitting failure reporting requirements in paragraph (a) of this
section do not apply to the following:
(1) Master meter operators;
(2) Small LPG operator as defined in §192.1001; or
(3) LNG facilities.
§191.12 Distribution Systems: Mechanical Fitting Failure Reports
Each mechanical fitting failure, as required by §192.1009, must be submitted on a
Mechanical Fitting Failure Report Form PHMSA F–7100.1– 2. An operator must
submit a mechanical fitting failure report for each mechanical fitting failure that
occurs within a calendar year not later than March 15 of the following year (for
example, all mechanical failure reports for calendar year 2011 must be submitted no
later than March 15, 2012). Alternatively, an operator may elect to submit its reports
throughout the year. In addition, an operator must also report this information to the
State pipeline safety authority if a State has obtained regulatory authority over the
operator’s pipeline.
192-116. 76 FR 5494, Feb. 1, 2011
192-116, 76 FR 5494, Feb 1, 2011
Advisory Bulletin ADB-12-07 - Issued June 11, 2012
PHMSA is issuing an Advisory Bulletin to provide clarification to owners and
operators of gas distribution pipeline facilities when completing the Mechanical
Fitting Failure Report Form, PHMSA F 7100.1–2.
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 1 Plastic Pipe Reporting. Page 63907
Addressed in MFFR Final Rule preamble in Federal Register / Vol. 76, No. 21 /
Tuesday, February 1, 2011 / Rules and Regulations at:
• Pages 5494-5500
Page 41

<<<PAGE 43>>>

Guidance
Information
Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
Distribution Integrity Management FAQs
• C.5.1 Why is PHMSA collecting data about mechanical fitting failures?
• C.5.2 Do States already collect the type of information that is to be collected
for mechanical fitting failures?
• C.5.3 Should both steel and plastic mechanical fitting failures be reported?
How about the different styles of plastic mechanical fittings? Do mechanical
fitting failures in cast iron systems need to be reported?
• C.5.4 Since there is a new form for mechanical fitting failures which result in
a hazardous leak, do these failures still need to be reported under Part C of
the Annual Report?
• C.5.5 If aboveground mechanical fitting failures are hazardous but repaired
do they need to be reported?
• C.5.6 What are the expectations of operators in determining a cause for
mechanical fitting failures which result in a hazardous leak?
1. Operators must submit a Mechanical Fitting Failure Report Form PHMSA F–
7100.1– 2 for each mechanical fitting failure which result in a hazardous leak.
2. Mechanical fitting failures which result in a hazardous leak may be submitted
throughout the year or at one time prior to March 15th for the previous calendar
year. An operator’s procedure should describe or reference the methodology or
process used to collect the mechanical coupling failure data for submission.
3. §192.1009 requirements do not apply to master meter operators or small LPG
operators as defined in §192.1001.
1. The operator’s DIMP does not address submitting information about
mechanical fitting failures which result in hazardous leaks.
2. Apparent cause analysis was not adequately integrated into the IM program.
3. The appropriate actions were not specified to prevent recurrence of a problem
that could lead to an integrity concern.
4. Operator did not report hazardous mechanical fitting failures, as appropriate.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of an operator's procedure showing it does not meet the specified
requirements.
2. Documented photographic evidence demonstrating the violation.
3. Documented oral and/or written statements from operator personnel.
4. Records identifying mechanical fitting failures resulting in hazardous leaks that
were not included in the reporting performed by the operator.
Page 42

<<<PAGE 44>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1011
What records must an operator keep?
An operator must maintain records demonstrating compliance with the requirements
of this subpart for at least 10 years. The records must include copies of superseded
integrity management plans developed under this subpart.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 11: Required documentation. Page 63915. Proposed
documentation requirements were seen as unreasonably burdensome. In
particular, the proposed requirements to document “all” decisions and
changes related to a distribution integrity management (IM) program and to
keep all related records for the life of the pipeline were seen as unreasonable.
PHMSA has removed this list of documents and simplified the language of
the regulation to require operators to maintain documentation demonstrating
compliance.
Distribution Integrity Management FAQs
• C.6.1 What records does an operator need to maintain to demonstrate
compliance with Subpart P?
• C.6.2 Must I retain all records I consider in developing my DIMP under
§192.1011?
• C.6.3 Am I required to submit my DIMP Plan to any Federal or State
Regulator?
1. Operators are required to maintain records that demonstrate compliance with
the DIMP Rule for a minimum of 10 years, including superseded copies of the
DIMP. An operator’s procedure must require retention of records for a
minimum of 10 years.
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2. Records demonstrating compliance must be available for review during an
inspection. These records must include baseline determinations and results for
performance measures. Operators must be able to demonstrate that data was
collected and results were reviewed to evaluate effectiveness of performance
measures to support any actions taken or not taken.
3. Numerous records are generated as a result of Distribution Integrity
Management Program. To the extent that these records demonstrate
compliance with Rule requirements, they must be maintained by the operator
such that they are readily retrievable, protected from damage, and secured
sufficiently to prevent unauthorized use.
4. The rule does not list specific records that must be maintained, but examples
of records demonstrating compliance may include:
a. A written integrity management program
b. Knowledge of the system documents
c. Threat identification and risk assessment documentation
d. Measures to address risk documentation
e. Performance measures used to evaluate the effectiveness of risk
mitigation measures documentation
f. Records documenting performance of periodic evaluations of the DIMP
program.
g. Documentation of Notifications to PHMSA or State/Local Regulatory
Agencies.
5. For records such as worksheets, memoranda or notes, these documents should
be retrievable from a central location to the extent practicable, as opposed to
being retained exclusively by individuals without record storage
responsibilities. Since many records must be retained for the life of the
pipeline, this suggests that records be kept in some sort of formalized or
structured record-keeping system, as opposed to individual working files. The
procedure should include the document location within the operator’s
facilities.
a. As an alternative to each procedure specifying recordkeeping
requirements, a single procedure that specifies all recordkeeping
requirements would be considered sufficient programmatic control.
b. Records retained should be in good condition, legible, readily
retrievable, properly secured, and properly completed.
c. Any procedures or guidance for threat identification and risk assessment
must be retained, as well as the results of the process.
d. Periodic updates to risk assessment documentation would also be
expected in program files include supporting records such as meeting
minutes of subject matter expert reviews where conclusions are drawn.
e. The Rule does not require that documents to support any decision,
analysis, and process developed and used to implement and evaluate
each element of the integrity management program be maintained, but
they are useful.
f. This set of documents includes those developed and used in support of
any identification, calculation, amendment, modification, justification,
deviation and determination made, and any action taken to implement
and evaluate any of the program elements.
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Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
6. An operator must maintain the required records and superseded copies for 10
years. Earlier revisions to the program must be included in document files as
archived information. Evidence must be included as to the effective date of
any and all revisions.
1. Process/procedure did not require that all required records be maintained for
the ten year minimum requirement.
2. The operator did not have a procedure specifying that copies of superseded
integrity management plans will be maintained for at least 10 years.
3. The operator did not keep the required records or other documentation for the
specified time period.
4. The operator did not keep the superseded integrity management plans for the
specified time period.
5. The operator does not have records or other documentation to support
compliance with the requirements of §192.1011.
6. The operator has records or other documentation to support the above
requirements but the records or other documentation are insufficient to prove
compliance.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages of the operator's DIMP showing that the
procedure is not documented, is inadequate.
2. Absence of or insufficient records demonstrating that the operator cannot
produce documentation that demonstrates compliance.
3. Absence of the superseded DIMP(s).
4. Documented photographic evidence demonstrating the violation.
5. Documented oral and/or written statements from operator personnel.
Page 45

<<<PAGE 47>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1013
When may an operator deviate from required periodic inspections under this part?
(a) An operator may propose to reduce the frequency of periodic inspections and
tests required in this part on the basis of the engineering analysis and risk assessment
required by this subpart.
(b) An operator must submit its proposal to the PHMSA Associate Administrator for
Pipeline Safety or, in the case of an intrastate pipeline facility regulated by the State,
the appropriate State agency. The applicable oversight agency may accept the
proposal on its own authority, with or without conditions and limitations, on a
showing that the operator's proposal, which includes the adjusted interval, will
provide an equal or greater overall level of safety.
(c) An operator may implement an approved reduction in the frequency of a periodic
inspection or test only where the operator has developed and implemented an
integrity management program that provides an equal or improved overall level of
safety despite the reduced frequency of periodic inspections.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 6: Alternative Intervals. Page 63910
Distribution Integrity Management FAQs
• C.7.1 How can operators use their DIMP programs to justify reductions in
other periodic test and inspection requirements?
• C.7.2 What will PHMSA (or States) require for proposals for alternate
inspection intervals?
1. Part 192 requires Distribution Operators to perform a number of inspections at
specified intervals that include, but are not limited to:
a. Part 192.465: CP Testing, Rectifier Inspection
b. Part 192.465(e): Evaluate pipelines w/no CP
c. Part 192.481: Atmospheric Corrosion Control Monitoring
d. Part 192.723: Leak Surveys
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<<<PAGE 48>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
e. Part 192.739: Pressure Limiting Device Testing
f. Part 192.747: Emergency Valves
g. Part 192.749: Vault Inspections
h. Part 192.721: Main Patrolling
2. A fundamental premise of risk management is reallocation of resources from
activities that have a lesser effect on risk to activities that can have a greater
impact. The intervals specified for required inspections in 192 are not risk
based. They were set based on judgment and experience. An operator’s risk
assessment may show that some of these inspections have little effect on
reducing risk, while resources conducting those inspections could be used for
other activities that could have a significant impact on reducing risk. This
regulation allows this type of resource reallocation to occur.
3. Changes to intervals required under this provision are not waivers or special
permits. 192.1013 allows, by rule, changes to the intervals with approval by
the Administrator of PHMSA or the appropriate state regulatory agency.
4. PHMSA/States may impose additional requirements as part of approving an
application for alternative intervals. If that is done, the additional
requirements become binding and the operator may be cited for failure to
comply with them. Failure to comply could also result in the regulating
authority rescinding its approval for alternative intervals.
1. Operator has implemented alternative intervals for one or more Part 192
requirements without obtaining approval of the regulating authority.
2. Operator is conducting required inspections at an interval that differs from the
alternative interval approved by the regulating authority.
3. Operator is not complying with additional requirements imposed by the
regulating authority as part of its approval of alternative intervals.
4. The regulating authority has rescinded approval for alternative intervals but
the operator has not modified its procedures and practices to return to the
interval specified in Part 192.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copy of letter/order from the regulating authority approving alternative intervals
or lack thereof
2. Copies of procedures specifying different alternative intervals than those
approved by the regulating authority.
3. Records indicating that inspections have been conducted at intervals greater than
the alternative approved by the regulating authority.
4. Absence of and/or insufficient records demonstrating that the operator cannot
produce documentation that demonstrates compliance.
5. Documented photographic evidence demonstrating the violation.
6. Documented oral and/or written statements from operator personnel.
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<<<PAGE 49>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(a)
What must a master meter or small liquefied petroleum gas (LPG) operator do to
implement this subpart?
(a) General. No later than August 2, 2011 the operator of a master meter system or
a small LPG operator must develop and implement an IM program that includes a
written IM plan as specified in paragraph (b) of this section. The IM program for
these pipelines should reflect the relative simplicity of these types of pipelines.
* * * * *
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 7: IM requirements for master meter and LPG operators.
Page 63912
• Comment Topic 11: Required documentation. Page 63915
Distribution Integrity Management FAQs
• B.4.1 What is SHRIMP? (Simple, Handy, Risk-based Integrity Management
Plan)
• B.4.2 Is there a threshold size of an operator’s distribution system above
which the SHRIMP tool should not be used?
• B.4.3 Will my plan be in compliance if I use SHRIMP?
• C.4.2 Can the DIMP plan incorporate by reference the operator’s procedures
from their other manuals or plans?
• C.7.1 How can operators use their DIMP programs to justify reductions in
other periodic test and inspection requirements?
• C.7.2 What will PHMSA (or States) require for proposals for alternate
inspection intervals?
• C.8.1 Are all LPG operators and natural gas operators, regardless of the size
of their distribution system, subject to the DIMP regulation?
• C.8.3 What do master meter and small LPG operators need to have
implemented by August 2, 2011?
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<<<PAGE 50>>>

Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 1 Introduction 1.1-1.3
• Section 2 Elements of a Distribution Integrity Management Plan 2.1-2.2
• Section 10 Sample DIMP Approaches 10.1-10.2
Gas Distribution Integrity Management Program: Resources
• DIMP Inspection Forms
• Technical Reports
• Distribution Integrity Management: Guidance for Master Meter and Small
Liquefied Petroleum Gas Pipeline Operators
• Plastic Piping Data Collection Initiative
• Gas Piping Technology Committee (GPTC) Guide Material Appendix
G-192-8 Distribution Management Integrity Program
• SHRIMP - Simple Handy Rule based Integrity Management Plan
• Industry Associations
• Excavation Damage Prevention Organizations
Guidance
Information
1. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. From 192.1001: Integrity Management Plan or IM
Plan means a written explanation of the mechanisms or procedures the
operator will use to implement its integrity management program and to
ensure compliance with this subpart. For Master Meter and Small LPG
operators, integrity management program must include the appropriate set of
mechanisms or procedures to develop and implement each program element.
The applicability of the word mechanisms for these operators is important as a
synonym for mechanisms is processes. The operator may employ a written
explanation of the process employed (mechanism) to develop and implement a
required element that is less specific than a written procedure. The IM program
for these pipelines should reflect the relative simplicity of these types of
pipelines. The DIMP could be concise, but still must be sufficient for operator
personnel to understand and implement the program on a consistent basis.
2. The written DIMP must include the date the DIMP was written and
implemented, the effective date, and a revision history.
3. The operator may use a written explanation of the process employed to
develop and implement a required element that is less specific than a written
procedure.
4. Many operators use commercially-available products to develop their DIMP
(e.g., APGA SIF’s Simple, Handy, Rule-based Integrity Management Plan –
SHRIMP). Most DIMPs developed using commercial products require
customization to reflect the operator’s unique circumstances and procedures.
Guidance specific to an operator who transfers pipeline assets to another
operator but retains responsibility, by contract, for maintenance and distribution
integrity management activities.
1. Which operator is accountable for implementing the DIMP?
OPS and the States inspect operators for compliance with the pipeline safety
regulations. An ‘operator’ is defined in 49 C.F.R. §192.3 as “a person who
engages in the transportation of gas”. A ‘person’ is further defined as an
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<<<PAGE 51>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
individual or firm, joint venture, partnership, corporation, association, State,
municipality, cooperative association, or joint stock association, and including any
trustee, receiver, assignee, or personal representative thereof. If an operator retains
responsibility for operations and maintenance activities including integrity
management, then that operator must comply with DIMP.
1. The operator does not have a DIMP written and implemented by August 2,
2011.
2. The operator does not address LPG or other types of gas transported when
applicable.
3. There is ambiguity or confusion as to which pipeline system the DIMP
address.
4. The DIMP does not contain the necessary mechanisms or procedures to
demonstrate that the DIMP was written and is being implemented.
5. The DIMP does not include all pipe and appurtenances.
6. A new system was put into operation and service without a written DIMP.
7. An operator who acquired an existing system and did not continue operations
under the existing DIMP or did not incorporate the acquired assets into its
DIMP within one year.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated that the DIMP was written and implemented by August 2, 2011.
2. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated the type(s) of gas are transported.
3. Copies of the applicable pages of the DIMP showing that the operator has not
clearly stated the system which the DIMP covers.
4. Documented photographic evidence demonstrating the violation.
5. Documented oral and/or written statements from operator personnel.
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<<<PAGE 52>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(b)(1)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
(b) Elements. A written integrity management plan must address, at a minimum, the
following elements:
* * * * *
(1) Knowledge. The operator must demonstrate knowledge of its pipeline, which, to
the extent known, should include the approximate location and material of its pipe-
line. The operator must identify additional information needed and provide a plan
for gaining knowledge over time through normal activities conducted on the pipeline
(for example, design, construction, operations or maintenance activities).
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 20: Knowledge of pipeline. a. Environmental factors, Page
63919
Distribution Integrity Management FAQs
• C.4.a.1 The rule requires that an operator know its system. Must an operator
excavate simply to gather information about parts of its system where it may
not now have complete knowledge?
• C.4.a.2 There are some characteristics about an operator’s system that may
not be known during the development of the IM plan. What are PHMSA’s
expectations for filling those voids?
• C.4.a.3 Who qualifies as a “subject matter expert”?
• C.4.a.4 What data will be required to be collected for new gas pipelines
going in the ground?
• C.4.a.5 What comprises "reasonably available" information?
• C.4.a.6 Must an operator’s plan include the sources used to demonstrate an
understanding of its gas distribution system?
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<<<PAGE 53>>>

Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 3 – Knowledge
Guidance
Information
1. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. From 192.1001: Integrity Management Plan or IM
Plan means a written explanation of the mechanisms or procedures the
operator will use to implement its integrity management program and to
ensure compliance with this subpart. For Master Meter and Small LPG
operators, integrity management program must include the appropriate set of
mechanisms or procedures to develop and implement each program element.
The applicability of the word mechanisms for these operators is important as a
synonym for mechanisms is processes. The operator may employ a written
explanation of the process employed (mechanism) to develop and implement a
required element that is less specific than a written procedure. The IM program
for these pipelines should reflect the relative simplicity of these types of
pipelines. The DIMP could be concise, but still must be sufficient for operator
personnel to understand and implement the program on a consistent basis.
2. The operator may use a written explanation of the process employed to
develop and implement a required element that is less specific than a written
procedure.
3. An operator must have knowledge of its gas distribution system including, but
not limited to, the following: location, material composition, piping sizes,
joining methods, construction methods, date of installation, soil conditions
(where appropriate), operating and design pressures, history, operating
experience performance data, condition of system, and any other
characteristics noted by the operator as important to understanding its system.
This information may be obtained from sources including system maps,
construction records, work management system(s), geographic information
system(s), corrosion records, and personnel who have knowledge of the
system (Subject Matter Experts).
4. The operator must have documented mechanisms or procedures to adequately
address the gathering of information to demonstrate knowledge of its pipeline,
which, to the extent known, should include the approximate location and
material of its pipe-line.
5. The operator must identify additional information needed and provide a plan
for gaining knowledge over time through normal activities conducted on the
pipeline (for example, design, construction, operations or maintenance
activities).
6. The DIMP must list the names of the operator specific information sources,
not generic terms such as O&M documents.
7. Some historical data may be no longer applicable to the current condition of
the pipeline system. If the pipe was replaced, the data about the previous pipe
may no longer be relevant. Such data may be relevant where the
circumstances (e.g., construction practices, coatings, backfill materials, pipe
materials, environmental conditions) of the pipe prior to replacement exist
elsewhere and are relevant to existing risks in the operator’s system. For
example, if bare steel pipe has been replaced, but some bare steel still exists in
the system, then data concerning the replaced pipe may still be relevant.
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<<<PAGE 54>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
8. Operators who transport gases other than natural gas need to state in their
DIMP how the characteristics of the gas impact the threats and risk and
include the differences from natural gas.
9. For data identified by the operator as needed for a threat identification and risk
evaluation, there must be a process to identify facilities for which records are
missing, inaccurate, or incomplete. Verify that the operator has checked the data
for accuracy and completeness.
10. Collecting additional data and improving existing data is only required to occur
as part of normal pipeline activities and over time. There must be a method for
the people performing normal pipeline activities to know what additional data is
needed.
1. The operator does not have a mechanism or procedure that covers the tasks
being performed.
2. The operator fails to follow the written mechanism or procedures.
3. Operator did not demonstrate that they have looked at all available source
records to find information from past design, operations, or maintenance such
as coating, material, etc.
4. Operator did not specifically list which documents were used to assemble
knowledge of its system.
5. Operator does not gather or use reasonably available data on the entire pipeline
that could be relevant to performing their threat assessment, risk evaluation or
as needed to group like facilities.
6. There is no mechanism or procedure for identifying needed missing,
inaccurate or incomplete data.
7. The operator has not identified missing, inaccurate or incomplete data.
8. Operator did not collect data as specified in the mechanism or procedure.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages of the DIMP showing that:
a. The operator has not clearly stated the documents used to develop
knowledge of the system.
b. The list of documents used to develop knowledge of the system is
inadequate in identifying design, operating, or environmental
characteristics of the pipeline system.
2. Copies of applicable pages of the DIMP showing that the DIMP is not detailed
enough for an inspector to make a reasonable determination as to the accuracy
and thoroughness of the process.
3. Copies of the applicable pages of the operator's DIMP showing that the required
regulations or provisions are not documented or that the records or other
documentation is insufficient to prove compliance with the intended regulation
or provision.
4. Copies of the applicable pages of the operator's DIMP showing that the required
data collection and utilization of the data is not in the DIMP.
5. Documented photographic evidence demonstrating the violation.
6. Documented oral and/or written statements from operator personnel.
Page 53

<<<PAGE 55>>>

Other Special
Notations
Page 54

<<<PAGE 56>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(b)(2)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
(b) Elements. A written integrity management plan must address, at a minimum, the
following elements:
* * * * *
(2) Identify threats. The operator must consider, at minimum, the following
categories of threats (existing and potential): Corrosion, natural forces, excavation
damage, other outside force damage, material or weld failure, equipment failure, and
incorrect operation.
192-113, 74 FR 63906, Dec. 4, 2009
Advisory Bulletin ADB-13-04 – Issued August 22, 2013
PHMSA advisory to alert all pipeline operators of a T.D. Williamson, Inc. (TDW)
Leak Repair Clamp (LRC) recall issued by TDW on June 17, 2013. The recall
covers all TDW LRCs of any pressure class and any size. The LRCs may develop a
dangerous leak due to a defective seal. Hazardous liquid and natural gas pipeline
operators should verify if they have any TDW LRCs subject to the recall by
reviewing their records and equipment for installation of these LRCs.
Advisory Bulletin ADB-13-03: Correction – Issued October 31, 2013
PHMSA is issuing an Advisory Bulletin to remind owners and operators of liquefied
petroleum gas (LPG) and utility liquefied petroleum gas (utility LP-Gas) plants that
although they must follow the American National Standards Institute/National Fire
Protection Association (ANSI/NFPA) standards 58 or 59, they must also follow
certain sections and requirements of Part 192.
Advisory Bulletin ADB-13-02 – Issued July 12, 2013
PHMSA is issuing this advisory bulletin to all owners and operators of gas and
hazardous liquid pipelines to communicate the potential for damage to pipeline
facilities caused by severe flooding. This advisory includes actions that operators
should consider taking to ensure the integrity of pipelines in case of flooding.
Advisory Bulletin ADB-13-04 – Issued August 22, 2013
PHMSA advisory to alert all pipeline operators of a T.D. Williamson, Inc. (TDW)
Leak Repair Clamp (LRC) recall issued by TDW on June 17, 2013. The recall
covers all TDW LRCs of any pressure class and any size. The LRCs may develop a
Page 55

<<<PAGE 57>>>

dangerous leak due to a defective seal. Hazardous liquid and natural gas pipeline
operators should verify if they have any TDW LRCs subject to the recall by
reviewing their records and equipment for installation of these LRCs.
Advisory Bulletin ADB-11-05 – Issued August 26, 2011
PHMSA advisory to remind owners and operators of gas and hazardous liquid
pipelines of potential for damage to pipeline facilities caused by the passage of
Hurricanes. In addition, mentions IM obligations under 195.452
Advisory Bulletin ADB-12-05 – Issued March 20, 2012
PHMSA urges owners and operators to conduct a comprehensive review of their cast
iron distribution pipeline systems and replacement programs and to accelerate
pipeline repair, rehabilitation, and replacement of aging and high-risk pipe. In
addition ADB notes regulation requirement for natural gas distribution companies to
develop DIMP for pipelines owned, operated or maintained.
Other Reference
Material
& Source
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 7: IM requirements for master meter and LPG operators.
Page 63912
Distribution Integrity Management FAQs
• C.4.b.1 Must an operator use a computer-based risk analysis model?
• C.4.b.2 Must each of the 8 threats be considered for every pipeline type?
• C.4.b.3 The DIMP requirements include knowing the condition of facilities
that are at risk for potential damage from external sources. Cross bores of gas
lines in sewers have been reported at 2-3 per mile in high risk areas –
predominately where trenchless installation methods were used for gas line
installs and where sewers and gas lines are in the proximity of each other.
Does the potential for cross bore of sewers resulting in gas lines intersecting
with sewers need to be determined?
• C.4.b.4 Are pipeline “overbuilds” a threat? Should the “other concerns”
threat category contain pipeline overbuilds (building put over a pipeline)?
• C.4.b.5 We used leak causes which we have experienced in the past to
identify threats. For example, washouts in our system have not caused leaks
in the past so washouts were not identified as a threat. Should washouts be
classified as a potential threat due to the possibility of coating damage?
• C.4.b.6 Since we have not experienced any issues with pre 1973 Aldyl "A”
pipe in the past, we did not subdivide plastic pipe in our risk evaluation. It is
a potential threat to us only because of other operators' experience. Should
we have treated it as an applicable threat?
• C.4.b.7 Must I consider historical leak data after a section of pipeline has
been replaced?
• C.4.b.8 We often replace a section of pipeline rather than repairing
individually the leaks in that section. In this case, must we record the number
and grade of leaks?
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<<<PAGE 58>>>

• C.4.b.9 We are experiencing problems in ranking potential threats since
some of the low frequency events have not occurred on our systems, to date.
We are concerned about mixing apples and oranges by assigning a frequency
or probability to a threat that has not occurred and ranking it along with
events that do have frequency. How should we account for low or no
frequency threats in evaluating and ranking risks?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 4 - Identify Threats
• Table 4.1 Sample Threat Identification Method
Guidance
Information
1. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. From 192.1001: Integrity Management Plan or IM
Plan means a written explanation of the mechanisms or procedures the
operator will use to implement its integrity management program and to ensure
compliance with this subpart. For Master Meter and Small LPG operators,
integrity management program must include the appropriate set of mechanisms
or procedures to develop and implement each program element. The
applicability of the word mechanisms for these operators is important as a
synonym for mechanisms is processes. The operator may employ a written
explanation of the process employed (mechanism) to develop and implement a
required element that is less specific than a written procedure. The IM program
for these pipelines should reflect the relative simplicity of these types of
pipelines. The DIMP could be concise, but still must be sufficient for operator
personnel to understand and implement the program on a consistent basis.
2. The operator may use a written explanation of the process employed to
develop and implement a required element that is less specific than a written
procedure.
3. After characterizing its system, the operator must identify which threats are
relevant to the different distribution segments. The process must meet the need
of establishing a realistic identification of the threats and a determination of
whether their frequency and level of significance require a response that goes
beyond normal operating practices.
4. Operators must consider failures without a release as potential threats, when
appropriate.
5. The operator must determine for each facility grouping which, if any, of the 7
primary or subcategory threats could affect the current or future integrity of
that facility grouping.
6. Even if an operator concludes that a particular threat is not applicable to
sections of its pipeline, the basis for drawing such conclusions must be
documented. Operators may not discount or eliminate any existing or potential
threat for a subsystem without an adequate basis for doing so. This basis must
consider pipeline failure history, design, manufacturing, construction,
operation, and maintenance. The reasons for excluding pipe must be
documented in the operator’s IM program
7. If data used for threat identification and categorization are insufficient or
suspect, each threat covered by the missing or insufficient data is assumed to
apply to the entire group being evaluated until the additional information is
incorporated into the threat assessment. Unavailability of information is not
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Examples of a
Probable
Violation or
Inadequate
Procedures
justification for exclusion of a threat. Where data are missing or insufficient,
conservative assumptions should be used in the risk assessment. Records must
be maintained that identify how unsubstantiated data are used, so that the
impact on the variability and accuracy of assessment results can be considered.
8. It may also be appropriate to subdivide threats. For example, consider
atmospheric corrosion of aboveground pipe and external corrosion of buried
pipe separately. Another example would be subdividing out known problem
materials.
9. Excavation damage must be included in the threats considered in the DIMP,
even if the operator has good external damage experience and a thorough
damage prevention program. It is not acceptable for an operator to say that
this threat is dealt with outside of DIMP and therefore need not be included.
10. Potential threats include threats where the operator has not experienced a leak
(i.e., release of gas) but they have conditions conducive to the threat (e.g. atm.
corrosion, hurricanes, flooding, excavation damage, materials with known
integrity issues). Examples include:
a. Trenchless technology used in the area – unknowingly bored thru
sewer or water lines
b. Future utility/road improvement projects
c. Discovery of a material not previously known to be in the system
d. Customers built structures over existing pipelines
e. Overpressurization events
f. Instances of pipe damage (including damage to tracer wire) that did
not result in a release
g. Pipe materials susceptible to brittle failure modes
11. Possible sources include past O&M procedures, purchase orders, material lists
from old field orders or standards, and information from industry sources (e.g.,
plastic pipe data committee) or PHMSA Advisory Bulletins. Information must
include for example, past continuing surveillance records (192.613).
1. The operator does not have a mechanism or procedure that covers the tasks
being performed.
2. The operator fails to follow the written mechanism or procedures.
3. The mechanisms or procedures do not include a review of the 7 primary
threats.
4. All of the 7 primary threats required by the rule were not adequately
considered and/or evaluated
5. Multiple threats from the different 7 primary threat categories were not
adequately evaluated
6. Specific threats eliminated from consideration without adequate justification
7. Operator does not use relevant operating and maintenance records in
evaluating each threat.
8. Elimination of a threat is not sufficiently justified or documented.
9. Mechanism or procedure did not adequately describe the requirements for
identifying and evaluating threats
10. Operator did not use reasonable or appropriate subdivision of threats
11. The mechanism or procedure did not include a review of the potential threats.
12. Operator did not use all reasonably available records.
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Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
Examples of
Evidence
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate mechanisms or procedures.
2. Reasonably available external information (e.g., Advisory Bulletin) identifying a
threat applicable to the operator’s system that was not considered in developing
the DIMP.
3. Documented photographic evidence demonstrating the violation.
4. Documented oral and/or written statements from operator personnel.
Other Special
Notations
Page 59

<<<PAGE 61>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(b)(3)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
(b) Elements. A written integrity management plan must address, at a minimum, the
following elements:
* * * * *
(3) Rank risks. The operator must evaluate the risks to its pipeline and estimate the
relative importance of each identified threat.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 22: Risk assessments. Page 63920
Distribution Integrity Management FAQs
• C.4.c.1 What are the key things an operator should be focusing on when
developing an effective risk assessment methodology?
• C.4.c.2 From which date are operators required to collect data for their plan?
• C.4.c.3 How are newly identified threats to the system's integrity expected to
be handled in an operator's DIMP plan?
• C.4.c.5 Do multiple threats need to be considered for each facility grouping?
Do all threats need to be in one relative risk ranking?
• C.4.c.6 What is expected of multi-state operator in regards to a risk ranking?
• C.4.c.7 We plan to perform a risk ranking by state. Regardless of the
outcome of the risk ranking, we will not decrease the historical level of
expenditures in each state. However, a system wide risk ranking will be used
to determine where expenditures beyond historical levels will be allocated.
Does that meet the intent of the state by state risk ranking?
• C.4.b.9 We are experiencing problems in ranking potential threats since
some of the low frequency events have not occurred on our systems, to date.
We are concerned about mixing apples and oranges by assigning a frequency
or probability to a threat that has not occurred and ranking it along with
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<<<PAGE 62>>>

events that do have frequency. How should we account for low or no
frequency threats in evaluating and ranking risks?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 5 – Evaluate and Rank Risk
Guidance
Information
1. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. From 192.1001: Integrity Management Plan or IM
Plan means a written explanation of the mechanisms or procedures the
operator will use to implement its integrity management program and to
ensure compliance with this subpart. For Master Meter and Small LPG
operators, integrity management program must include the appropriate set of
mechanisms or procedures to develop and implement each program element.
The applicability of the word mechanisms for these operators is important as a
synonym for mechanisms is processes. The operator may employ a written
explanation of the process employed (mechanism) to develop and implement a
required element that is less specific than a written procedure. The IM program
for these pipelines should reflect the relative simplicity of these types of
pipelines. The DIMP could be concise, but still must be sufficient for operator
personnel to understand and implement the program on a consistent basis.
2. The operator may use a written explanation of the process employed to
develop and implement a required element that is less specific than a written
procedure.
3. Once threats have been identified, the operator must develop a method to
assess and prioritize the associated risks in order to address those of greatest
concern first. In performing a risk analysis, it is important to note that risk is
the likelihood of an event occurring times the consequence of that event. An
event that is highly likely and also has a high public safety consequence
constitutes an event of greatest concern. An unlikely event having minimal
consequence may not justify extraordinary precautions. An unlikely event that
could have very high consequences may justify additional precautions.
Distribution incidents, (as defined in 49 CFR 191, Transportation of Natural
and Other Gas By Pipeline: Annual Reports, Incident Reports, and Safety-
Related Condition Reports, and contained in the PHMSA incident data base)
often are events that are of low likelihood but of high consequence.
4. The operator must identify both the likelihood (frequency) and the
consequences (potential impact) of failures due to each threat/subcategory of
threat for each system to determine the relatively risk. When risk reaches a
threshold set by the operator measures to reduce risk may be needed to address
the threat.
5. It is inadequate for an operator to conclude that a pipeline is not subject to any
particular threat or threats, based solely on the fact that it has not experienced a
pipeline failure that has been attributed to the threat(s). They also must
consider the potential threat.
6. Examples of Likelihood factors to be considered:
a. Leaks per number of services (based on size of operator)
b. Amount of construction activity in area
c. Number of hits per unit locate tickets
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<<<PAGE 63>>>

7. Examples of Consequence factors to be considered:
a. operating pressure
b. population density (“downtown” versus rural)
c. impact of loss of supply
d. number of customers affected
e. proximity to structures and critical facilities (e.g. schools and hospitals)
f. proximity to known groups of people with limited mobility (usually
institutionalized)
8. The operator may employ various means to achieve validation. Elements of
validation may include:
a. Team review of results
b. Subject Matter Expert reviews
9. The operator must have a mechanism or procedure for validating the results of
the risk analysis process. The results generated by the model should agree with
the consensus of the validation group. If the analysis results do not identify
known risk factors, the evaluation model/method must be questioned,
analyzed, and if necessary, revised.
Examples of a
Probable
Violation or
Inadequate
Procedures
1. The operator does not have a mechanism or procedure that covers the tasks being
performed.
2. The operator fails to follow the written mechanism or procedures.
3. Operator did not perform a risk evaluation to estimate the relative importance of
each identified threat
4. A comprehensive risk analysis process was not adequately developed
5. All portions of pipelines were not included in the risk analysis
6. The process did not adequately consider unique risk factors when using a
"standard" risk model
7. The risk analysis process was not adequately documented
8. The risk analysis process did not adequately consider all identified risks
9. Operator-specific leak/failure history and other operating experience were not
adequately considered in the in risk analysis
10. Poor quality data was used in the risk analysis
11. The basis for risk model scores was not adequately documented
12. Operator did not validate the results of the risk evaluation.
13. Operator history is not consistent with the output of the risk evaluation model.
14. Information provided by validation team members do not concur with results.
15. The operator has no documentation validating the ranking results.
16. Mechanism(s) or procedure(s) do not include sufficient detail and clarity to
allow anyone required to use them to perform the task.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
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<<<PAGE 64>>>

Examples of
Evidence
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Documented oral and/or written statements from operator personnel.
3. Printout of operators risk ranking results.
4. Portions of the documentation of a commercial product that demonstrate it
should not have been used in the manner the operator used it.
5. Documented photographic evidence demonstrating the violation.
6. Documented oral and/or written statements from operator personnel.
Other Special
Notations
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<<<PAGE 65>>>

Enforcement
Distribution Integrity Management
Guidance
Part 192
Revision Date
12/7/2015
Code Section
§192.1015(b)(4)
Section Title
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
Existing Code
*
*
*
*
*
Language
(b) Elements. A written integrity management plan must address, at a minimum,
the following elements:
* *
*
* *
(4) Identify and implement measures to mitigate risks. The operator must
determine and implement measures designed to reduce the risks from failure of its
pipeline.
*
_* *
* *
Origin of Code
192-113, 74 FR 63906, Dec. 4, 2009
Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
NoticeR
Summaries
Other Reference
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Material
Friday, December 4, 2009 / Rules and Regulations at:
& Source
Comment Topic 14: Leak monitoring. Page 63917
•
Comment Topic 16: IM program evaluation and improvement. Page 63918
Comment Topic 23: Performance measures. Page 63922
Distribution Integrity Management FAQS
• C.4.d.1 Must an operator implement additional or accelerated actions to
reduce risk from its pipeline?
• C.4.d.2 How will small operators, with limited staff, be able to implement
the requirements for risk analysis and selection of risk control measures?
• C.4.d.3 If an operator already has a leak management program, does the
operator have to implement a new program in response to this regulation?
• C.4.d.4 Why not simply require operators of gas distribution pipelines to
replace old pipe?
• C.4.d.5 What kind of issues should an operator focus on in addressing the
threat of Excavation Damage as part of its DIMP Plan?
• C.4.d.6 In order to eliminate the need for a leak management program, how
quickly would an operator need to repair all leaks?
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<<<PAGE 66>>>

• C.4.d.7 Can the installation of excess flow valves be a method to mitigate
risks?
• C.4.d.8 What criteria should an operator use to identify when a measure to
reduce risk is needed?
• C.4.d.9 Do all actions operators take to reduce risk need to be included in
their DIMP plan?
• C.4.d.10 We have heard that operators will be required to implement specific
measures to reduce risk. Can you describe the required actions?
• C.4.d.11 How can an operator demonstrate that their leak management
program is effective?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 6 – Identify and Implement Measures to Address Risks
Guidance
Information
1. Master Meter and Small LPG operators are treated differently in the DIMP Rule
than larger operators. From 192.1001: Integrity Management Plan or IM Plan
means a written explanation of the mechanisms or procedures the operator will
use to implement its integrity management program and to ensure compliance
with this subpart. For Master Meter and Small LPG operators, integrity
management program must include the appropriate set of mechanisms or
procedures to develop and implement each program element. The applicability
of the word mechanisms for these operators is important as a synonym for
mechanisms is processes. The operator may employ a written explanation of the
process employed (mechanism) to develop and implement a required element
that is less specific than a written procedure. The IM program for these pipelines
should reflect the relative simplicity of these types of pipelines. The DIMP
could be concise, but still must be sufficient for operator personnel to understand
and implement the program on a consistent basis.
2. The operator may use a written explanation of the process employed to develop
and implement a required element that is less specific than a written procedure.
3. The design and operation of distributions systems is so diverse that no single risk
control method is appropriate in all cases.
4. Risk can be reduced by implementing risk control practices that decrease the
likelihood of the event occurring, or mitigate the consequence of the event. In
considering gas distribution systems, it is essential to remember that the
consequences of a failure in a distribution system may take a protracted period of
time to develop. During this period of time, certain techniques can be used to
detect the failure and actions can be taken to address the failure before it
produces an incident.
5. The process for identifying additional measures is based on identified threats to
each pipeline segment and the risk analysis. Clearly, facilities and groups of
facilities that represent the highest risk are the most important candidates for
measures to reduce risk. There is significant difference in requirements for MM
and small LPG Operators versus operators under the §192.1005 requirements as
this code section does not require measures to include an effective leak
management program.
6. Operators must have implemented and scheduled measures to address the
prominent risks identified in their risk evaluation by August 2, 2011 as a DIMP
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<<<PAGE 67>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
was to have been developed and implemented by this date. Some measures can
be implemented immediately. Others (e.g., pipe replacement) may require
budget approval and allocation of resources; operators should have considered
this and scheduled major measures appropriately in their DIMP. Operators are
expected to promptly identify the need for measures in the event a new risk is
identified.
7. The mechanisms or procedures must detail the basis for decisions and be
documented as part of the operator’s IM plan. Decisions include:
a. Which measures to reduce risk to implement
b. Schedule for implementation of the measure(s) to reduce risk
c. Performance metrics for the measures to reduce risk
8. The operator must able to produce records demonstrating that a risk measure has
been implemented or is scheduled to be implemented. Scheduled measures
should be justified based on complexity of the implementation (considerations:
budgetary constraints, procurement, need for additional resources, etc.).
9. For measures to reduce risk scheduled for future implementation the operator
should have records which demonstrate actions are occurring to implement the
measures according to the prescribed schedule. (e.g., budgeted, scheduled,
preliminary actions completed).
1. The operator does not have a mechanism or procedure that covers the tasks
being performed.
2. The operator fails to follow the written mechanism or procedures.
3. No mechanism or procedure is in place to identify additional measures to
prevent a pipeline failure and to mitigate the consequences of a pipeline
failure.
4. The mechanism or procedure does not identify the need for measures to reduce
risk.
5. The mechanism or procedure does not require a schedule for implementation
of measures to reduce risk.
6. The mechanism or procedure for identifying additional measures is not based
on identified threats to each pipeline segment and the risk analysis.
7. The mechanism or procedure for evaluating additional preventive and
mitigative measures does not adequately describe the method used to assure
the appropriate selection of the risk mitigative measures intended to reduce
risk for a specific threat.
8. The risk mitigative measures do not specifically address identified risk factors.
9. The DIMP does not provide a schedule for implementation of mitigative
measures.
10. The impact of preventive or mitigative actions on risk was not adequately
evaluated.
11. Measures to reduce risk have not been performed according to operator’s
guideline/procedure.
12. Operator has not identified measures to reduce risk when required by their risk
evaluation.
13. Operator has not scheduled or obtained resources to perform measures to
reduce risk.
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<<<PAGE 68>>>

Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
Examples of
Evidence
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Copies of the risk evaluation demonstrate that measures to reduce risk were
needed but not scheduled.
3. Documented photographic evidence demonstrating the violation.
4. Documented oral and/or written statements from operator personnel.
Other Special
Notations
Page 67

<<<PAGE 69>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(b)(5)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
(b) Elements. A written integrity management plan must address, at a minimum, the
following elements:
* * * * *
(5) Measure performance, monitor results, and evaluate effectiveness. The operator
must monitor, as a performance measure, the number of leaks eliminated or repaired
on its pipeline and their causes.
192-113, 74 FR 63906, Dec. 4, 2009
Distribution Integrity Management FAQs
• C.4.e.1 Why has PHMSA selected the performance measures that it has for
periodic reporting?
• C.4.e.2 Does every measure to address risk require a performance measure?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 7 – Measure performance, monitor results and evaluate effectiveness
1. Master Meter and Small LPG operators are treated differently in the DIMP Rule
than larger operators. From 192.1001: Integrity Management Plan or IM Plan
means a written explanation of the mechanisms or procedures the operator will
use to implement its integrity management program and to ensure compliance
with this subpart. For Master Meter and Small LPG operators, integrity
management program must include the appropriate set of mechanisms or
procedures to develop and implement each program element. The applicability
of the word mechanisms for these operators is important as a synonym for
mechanisms is processes. The operator may employ a written explanation of the
process employed (mechanism) to develop and implement a required element
that is less specific than a written procedure. The IM program for these pipelines
should reflect the relative simplicity of these types of pipelines. The DIMP
could be concise, but still must be sufficient for operator personnel to understand
and implement the program on a consistent basis.
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<<<PAGE 70>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
2. The operator may use a written explanation of the process employed to develop
and implement a required element that is less specific than a written procedure.
3. The mechanism or procedure used by the operator must describe how they
collect the data for the performance measure “number of leaks eliminated or
repaired on its pipeline and their causes”. The operator must identify how
frequently they will monitor the measure. The operator must have
documentation demonstrating that they are monitoring the performance measure
“number of leaks eliminated or repaired on its pipeline and their causes”.
1. DIMP does not contain a mechanism or procedure for how the operator
monitors the performance measure “number of leaks eliminated or repaired on
its pipeline and their causes”.
2. Operator does not collect data to establish a baseline measurement or to
monitor the performance measure “number of leaks eliminated or repaired on
its pipeline and their causes”.
3. Operator did not monitor the performance measure “number of leaks
eliminated or repaired on its pipeline and their causes”.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable pages from the operator’s DIMP which demonstrate
inadequate procedures.
2. Documented oral and/or written statements from operator personnel
substantiating that data was not collected or monitored.
3. Documented photographic evidence demonstrating the violation.
Page 69

<<<PAGE 71>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Guidance
Information
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(b)(6)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
(b) Elements. A written integrity management plan must address, at a minimum, the
following elements:
* * * * *
(6) Periodic evaluation and improvement. The operator must determine the
appropriate period for conducting IM program evaluations based on the complexity
of its pipeline and changes in factors affecting the risk of failure. An operator must
re-evaluate its entire program at least every five years. The operator must consider
the results of the performance monitoring in these evaluations.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 16: IM program evaluation and improvement. Page 63917
Distribution Integrity Management FAQs
• C.4.f.1 How often does an operator need to evaluate its program?
• C.4.f.2 What constitutes a periodic evaluation?
Gas Piping Technology Committee (GPTC) Guide Material Appendix G-192-8
• Section 8 – Periodic Evaluation and Improvement
1. Master Meter and Small LPG operators are treated differently in the DIMP
Rule than larger operators. From 192.1001: Integrity Management Plan or IM
Plan means a written explanation of the mechanisms or procedures the
operator will use to implement its integrity management program and to
ensure compliance with this subpart. For Master Meter and Small LPG
operators, integrity management program must include the appropriate set of
mechanisms or procedures to develop and implement each program element.
The applicability of the word mechanisms for these operators is important as a
synonym for mechanisms is processes. The operator may employ a written
Page 70

<<<PAGE 72>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
explanation of the process employed (mechanism) to develop and implement a
required element that is less specific than a written procedure. The IM program
for these pipelines should reflect the relative simplicity of these types of
pipelines. The DIMP could be concise, but still must be sufficient for operator
personnel to understand and implement the program on a consistent basis.
2. The operator may use a written explanation of the process employed to
develop and implement a required element that is less specific than a written
procedure.
3. Master meter and small LPG operator’s systems are generally not complex. If
there are no significant changes to the condition of the system, the DIMP may
only need to be evaluated for improvements every 5 years. If changes occur in
the factors affecting the risk of failure, a program evaluation should be
conducted on a more frequent basis.
4. The evaluation of program effectiveness should include the following items to
determine if modifications to the program need to be made:
• Risk prioritization results
• Risk control practices
• Failure analysis results
• Performance measures
5. The method of evaluation could range from a formal audit of the program to a
simple review of the above items by a subject matter expert, based on the needs
of the program.
6. Corrective actions to improve the integrity management program must be
documented and are monitored for effectiveness. These reviews must examine
the effectiveness of the measure to reduce risk and the performance measure
with recommendations for improvement where necessary. Generic statements
about implementing improvements are not acceptable.
1. DIMP did not state the frequency of program evaluation.
2. Procedure did not include the evaluation of performance measures and their
effectiveness to determine if they are still appropriate or if they need to be
adjusted.
Evaluation
1. The operator does not have a mechanism or procedure that covers the tasks
being performed.
2. The operator fails to follow the written mechanism or procedures.
3. Performance goals were not included in the procedure
4. An operator's DIMP evaluation process does not specifically address the
means (methods) the operator implemented to track DIMP performance or the
procedure does not have specific frequencies (time frames) at which the
operator must track DIMP performance.
5. An operator's DIMP evaluation procedure does not assess whether the DIMP
is effective in reducing risk.
6. An operator's DIMP evaluation process does not provide the operator
information on implementing improvements in its DIMP effectiveness based
on findings from the evaluation.
7. The operator's evaluation process is not based on sound and repeatable
principles or is not sufficiently documented so an inspector can make a
reasonable determination as to the accuracy and thoroughness of the process.
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<<<PAGE 73>>>

Examples of
Evidence
Other Special
Notations
Improvement
1. An operator did not change its DIMP, as required to address information
obtained through annual reviews, program evaluations, or whenever any
change occurs that would materially alter any of the elements in the DIMP.
2. An operator did not actually make the changes to the DIMP or did not
implement the changes to the DIMP when and where the program evaluation
identified changes were required.
3. An operator did not thoroughly document the changes including the purpose,
content and date completed.
4. The process the operator describes in the procedure is not sufficiently
documented so an inspector can make a reasonable determination as to the
accuracy and thoroughness of the process.
5. Mechanism(s) or procedure(s) do not include sufficient detail and clarity to
allow anyone required to use them to perform the task.
Implementation
1. A DIMP program evaluation was not adequately performed and/or the results
were not adequately documented
2. Adequate actions were not identified to improve the DIMP based on a review
of the evaluation
3. Actions identified by the DIMP program evaluation were not adequately
implemented
4. Response to performance measures indicating poor performance was
inadequate
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement
tool to address these issues would be a Notice of Amendment and not a Notice of
Probable Violation or a Warning Letter. Section 3 of the Enforcement Procedures
provides guidance on selecting the appropriate enforcement action.
1. Copies of the applicable DIMP pages supporting any of the violations discussed
above either separately or in combination.
2. Copies of an operator's procedure showing it does not meet the specified
requirements.
3. Documented photographic evidence demonstrating the violation.
4. Documented oral and/or written statements from operator personnel.
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<<<PAGE 74>>>

Enforcement
Guidance
Revision Date Code Section Section Title Existing Code
Language
Origin of Code Last Amendment
Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material
& Source
Distribution Integrity Management
Part 192
12/7/2015
§192.1015(c)
§192.1015 What must a master meter or small liquefied petroleum gas (LPG)
operator do to implement this subpart?
* * * * *
(c) Records. The operator must maintain, for a period of at least 10 years, the
following records:
(1) A written IM plan in accordance with this section, including superseded
IM plans;
(2) Documents supporting threat identification; and
(3) Documents showing the location and material of all piping and
appurtenances that are installed after the effective date of the operator's IM program
and, to the extent known, the location and material of all pipe and appurtenances that
were existing on the effective date of the operator's program.
192-113, 74 FR 63906, Dec. 4, 2009
Addressed in DIMP Final Rule preamble in Federal Register / Vol. 74, No. 232 /
Friday, December 4, 2009 / Rules and Regulations at:
• Comment Topic 11: Required documentation. Page 63915
Distribution Integrity Management FAQs
• C.4.g.1 When must operators start collecting and maintaining records with
data needed for performance measures?
• C.4.g.3 Can PHMSA further define the number of excavation tickets on the
new form?
• C.4.g.4 For municipal operators or joint utility operators, should the number
of excavation tickets include all excavation tickets or just those sent to the
gas department?
• C.4.g.5 Are multiple tickets for a single job counted as a single excavation
ticket?
• C.4.g.6 What if the excavation damage occurs on an excavation with no
ticket?
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<<<PAGE 75>>>

• C.4.g.7 We have a lot of steel risers which can be tightened to eliminate
leaks. We have not reported these on Form 7100 in PART C - TOTAL
LEAKS AND HAZARDOUS LEAKS ELIMINATED/REPAIRED
DURING YEAR in the past. Are these leaks considered reportable leaks per
DIMP, and should this threat be considered in a DIMP plan?
• C.6.1 What records does an operator need to maintain to demonstrate
compliance with Subpart P?
• C.6.2 Must I retain all records I consider in developing my DIMP under
§192.1011?
• C.6.3 Am I required to submit my DIMP Plan to any Federal or State
Regulator?
Guidance
Information
1. Operators are required to maintain records that demonstrate compliance with the
DIMP Rule for a minimum period of 10 years, including superseded copies of
the DIMP.
2. Earlier revisions to the program must be included in document files as archived
information. Documentation must be included as to the effective date of any and
all revisions.
3. Numerous records are generated as a result of Distribution Integrity
Management Program. To the extent that these records demonstrate compliance
with Rule requirements, they are to be maintained by the operator such that they
are readily retrievable, protected from damage, and secured sufficiently to
prevent unauthorized use.
4. For records such as worksheets, memoranda or notes, these documents should be
retrievable from a central location to the extent practicable, as opposed to being
retained exclusively by individuals without record storage responsibilities. Since
many records must be retained for the life of the pipeline, this suggests that
records be kept is some sort of formalized or structured record-keeping system,
as opposed to individual working files. The procedure should include the
document location within the operator’s facilities.
a. As an alternative to each guideline/procedure specifying recordkeeping
requirements, a single document that specifies all recordkeeping
requirements would be considered sufficient programmatic control.
b. Records retained should be in good condition, legible, readily
retrievable, properly secured, and properly completed.
c. Any procedures or guidance for threat identification and risk assessment
must be retained, as well as the results of the process.
d. Periodic updates to risk assessment documentation would also be
expected in program files include supporting records such as meeting
minutes of subject matter expert reviews where conclusions are drawn.
e. The regulation does not require that documents to support any decision,
analysis, and process developed and used to implement and evaluate
each element of the integrity management program be maintained but
they are useful.
f. This set of documents includes those developed and used in support of
any identification, calculation, amendment, modification, justification,
deviation and determination made, and any action taken to implement
and evaluate any of the program elements.
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<<<PAGE 76>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
Examples of
Evidence
Other Special
Notations
5. The operator needs provisions in their written DIMP for capturing and retaining
data about new pipeline installations. Data for new pipelines must include all
the characteristics needed to identify threats and evaluate risks in the Operator’s
DIMP. The data must include, at a minimum, the location where the new
pipeline is installed and the material of which it is constructed. The operator
could document this on a map or other drawings of their system.
6. Material is more than just “steel” or “plastic.” It should include the
specification, grade of steel or type of plastic, manufacturer, coating, etc. In
accordance with the definition of “pipeline” in §192.3, this includes valves and
other appurtenances through which gas flows.
1. The operator did not have a mechanism or procedure specifying that copies of
superseded integrity management plans will be maintained for at least 10 years.
2. Operator does not have document(s) to support threat identification.
3. The operator did not keep the required records or other documentation for ten
years.
4. The operator does not have records or other documentation to support any of the
above requirements.
5. The operator has records or other documentation to support compliance with the
above requirements.
6. Operator does not have document(s) demonstrating the material and location of
facilities to the extent known prior to and installed after the effective date of
their IM plan.
7. Procedures do not include a process to record the necessary data about new
pipelines.
Depending on the circumstances, some of the examples listed in this section may be
inadequate plans and procedures, and not probable violations. Thus, the enforcement tool
to address these issues would be a Notice of Amendment and not a Notice of Probable
Violation or a Warning Letter. Section 3 of the Enforcement Procedures provides guidance
on selecting the appropriate enforcement action.
1. Copies of an operator's mechanism or procedure showing it does not meet the
specified requirements.
2. Copies of the applicable pages of the operator's DIMP showing that the required
data collection and utilization of the data is not in the DIMP.
3. Documented photographic evidence demonstrating the violation.
4. Documented oral and/or written statements from operator personnel.
Page 75

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/pipeline/enforcement/dimp-enforcement-guidance>
- Source ID: `phmsa-guidance`
- SHA-256: `a3295be0184ffadbe6a2633a90e4fef0b4fa64b806dc822016ebb8336d63e2a3`
- Retrieved: 2026-08-20T00:43:06.968Z
- Exported: 2026-08-24T12:11:39.307Z
- Document slug: `phmsa-guidance-dimp-enforcement-guidance-a127db96`

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