# Gas Integrity Management Enforcement Guidance

- **operation:** document
- **citation:** PHMSA Guidance, Gas Integrity Management Enforcement Guidance
- **title:** Gas Integrity Management Enforcement Guidance
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2015-12-07
- **effective on:** 2015-12-07
- **summary:** Gas Integrity Management Enforcement Guidance Document Gas_Integrity_Management_Enforcement_Guidance_12_7_2015.pdf (1.76 MB) 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 
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**body:**

Gas Integrity Management Enforcement Guidance

Document

 Gas_Integrity_Management_Enforcement_Guidance_12_7_2015.pdf (1.76 MB)

        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 Transmission Integrity Management Enforcement Guidance
Sections 192.901 through 192.951
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.
i

<<<PAGE 2>>>

Table of Contents
Glossary .................................................................................................................................iv
§192.901.................................................................................................................................1
§192.903.................................................................................................................................4
§192.905.................................................................................................................................9
§192.907(a) ............................................................................................................................15
§192.907(b) ............................................................................................................................19
§192.909.................................................................................................................................21
§192.911.................................................................................................................................24
§192.913.................................................................................................................................29
§192.915.................................................................................................................................33
§192.917(a) ............................................................................................................................36
§192.917(b) ............................................................................................................................42
§192.917(c) ............................................................................................................................48
§192.917(d) ............................................................................................................................54
§192.917(e) ............................................................................................................................57
§192.919.................................................................................................................................63
§192.921(a) ............................................................................................................................68
§192.921(b) ............................................................................................................................73
§192.921(c) ............................................................................................................................76
§192.921(d) ............................................................................................................................80
§192.921(e) ............................................................................................................................83
§192.921(f) .............................................................................................................................86
§192.921(g) ............................................................................................................................89
§192.921(h) ............................................................................................................................92
§192.923.................................................................................................................................95
§192.925(a) & (b) ...................................................................................................................97
§192.925(b)(1) .......................................................................................................................100
§192.925(b)(2) .......................................................................................................................106
§192.925(b)(3) .......................................................................................................................111
§192.925(b)(4) .......................................................................................................................116
§192.927(a) & (b) ...................................................................................................................120
§192.927(c)(1) ........................................................................................................................124
ii

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§192.927(c)(2) ....................................................................................................................... 128
§192.927(c)(3) ...................................................................................................................... 131
§192.927(c)(4) ....................................................................................................................... 135
§192.927(c)(5) ....................................................................................................................... 139
§192.929.................................................................................................................................142
§192.931.................................................................................................................................146
§192.933(a) ........................................................................................................................... 149
§192.933(b) & (c) .................................................................................................................. 153
§192.933(d) ........................................................................................................................... 157
§192.935(a) ........................................................................................................................... 162
§192.935(b) ........................................................................................................................... 166
§192.935(c) ........................................................................................................................... 171
§192.935(d) ........................................................................................................................... 173
§192.935(e) ........................................................................................................................... 177
§192.937(a) & (b) .................................................................................................................. 180
§192.937(c) ........................................................................................................................... 186
§192.939(a) ........................................................................................................................... 190
§192.939(b) ........................................................................................................................... 195
§192.941(a) ........................................................................................................................... 200
§192.941(b) ........................................................................................................................... 202
§192.941(c) ........................................................................................................................... 205
§192.943.................................................................................................................................208
§192.945.................................................................................................................................211
§192.947.................................................................................................................................216
§192.949.................................................................................................................................219
§192.951.................................................................................................................................222
3

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Glossary
For a complete “Glossary of Terms” please refer to the following
link: http://www.phmsa.dot.gov/staticfiles/PHMSA/Pipeline/TQGlossary/Glossary
.html
4

<<<PAGE 5>>>

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
Part 192, Gas Transmission Pipeline Integrity Management
12/7/2015
§192.901
What do the regulations in this subpart cover?
This subpart prescribes minimum requirements for an integrity management
program on any gas transmission pipeline covered under this part. For gas
transmission pipelines constructed of plastic, only the requirements in §§192.917,
192.921, 192.935 and 192.937 apply.
Amdt. 192-95, 68 FR 69778, December 15, 2003
Amdt. 192-95A, 69 FR 9307, December 20, 2003
Advisory Bulletin ADB -12-03
Notice to Operators of Driscopipe 8000 High Density Polyethylene Pipe of the
Potential for Material Degradation
On March 6, 2012, PHMSA issued this advisory bulletin to alert operators using
Driscopipe® 8000 High Density Polyethylene Pipe (Drisco8000) of the potential for
material degradation. Degradation has been identified on pipe between one-half inch
to two inches in diameter that was installed between 1978 and 1999 in desert-like
environments in the southwestern United States. However, since root causes of the
degradation have not been determined, PHMSA cannot say with certainty that this
issue is isolated to these regions, operating environments, pipe sizes, or pipe
installation dates. While the manufacturer has attempted to communicate with
known or suspected users, PHMSA and the National Association of Pipeline Safety
Representatives (NAPSR) have identified several operators currently using
Drisco 8000 pipe who had not received communications about the issue. PHMSA is
issuing this advisory bulletin to all operators of Drisco 8000 pipe in an effort to
ensure they are aware of the issue, communicating with the manufacturer and their
respective regulatory authorities to determine if their systems are susceptible to
similar degradation, and taking measures to address it.
ASME B31.8S-2004, Supplement to B31.8 on Managing System Integrity of Gas
Pipelines
Gas Piping Technology Committee (GPTC)
Part 192, Appendix E.I
§192.901 Page 1

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Guidance
Information
Examples of a
Probable
Violation or
Inadequate
Procedures
PHMSA Gas Transmission Integrity Management FAQs:
2 Who must comply with the rule?
3 Does the rule apply to operators of transmission pipelines for gases other
than natural gas?
7 Do the requirements of the rule apply to "idle" pipe?
9 Does the rule apply to gathering and other low-stress lines?
84 The Integrity Management Program portion of the rule [192.907] applies to
all portions of a pipeline system that are in HCAs, including compressor
stations, metering stations, and other equipment. What must an operator do
to comply with the rule for these facilities?
150 What requirements must an operator meet if there are no high consequence
areas on any of its transmission pipelines?
188 Are jurisdictional gathering lines covered?
247 For plastic transmission pipeline, must I meet all of the requirements in the
sections specified in section 192.901 or just those requirements specifically
directed at plastic pipe?
1. The requirements of Subpart O apply to all gas transmission pipelines
including compressor stations, metering stations, regulator stations, valve sets,
and other fabricated assemblies.
2. All requirements of Subpart O apply to “line pipe.”
3. For pipeline facilities other than “line pipe,” an assessment may not
necessarily be required.
4. Plastic transmission pipelines must be included in an integrity management
program. The Preamble of the Federal Register notes that most of the
requirements are applicable to metal pipelines, not plastic, only certain
requirements apply to plastic gas transmission pipelines. Requirements for a
continuing threat analysis (§§192.917, 192.937), a baseline assessment if a
threat other than third-party damage is identified (§192.921), and additional
preventive and mitigative measures (§192.935) apply to plastic gas
transmission pipelines. (Federal Register / Vol. 68, No. 240 / Monday,
December 15, 2003 / Rules and Regulations at Page 69801.)Failure to have
procedures to address this Integrity Management element should be cited
under the appropriate paragraph of §192.911
1. Failure to apply Subpart O requirements to all of the pipelines or components
covered under the Subpart. Since 192.901 solely involves subpart scope,
there are no requirements that can be violated, however cross referencing of
this regulation is acceptable when citing other regulation for failure to apply
requirements to pipelines or components.
2. Failure to include plastic gas transmission pipe in their Integrity Management
Program.
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.
§192.901 Page 2

<<<PAGE 7>>>

Examples of
Evidence
1. Integrity Management Plan or Program, or applicable portion that shows an
omission or deficiency in the Plan or Program.
2. Records.
3. Documented conversations with operator or contractor personnel identifying
inconsistencies or problems regarding implementation of the IM program.
Other Special
Notations
§192.901 Page 3

<<<PAGE 8>>>

Enforcement
Part 192 Gas Transmission Pipeline Integrity Management
Guidance
Revision Date 12/7/2015
Code Section §192.903
Section Title What definitions apply to this subpart?
Existing Code
Language
The following definitions apply to this subpart:
Assessment is the use of testing techniques as allowed in this subpart to ascertain
the condition of a covered pipeline segment.
Confirmatory direct assessment is an integrity assessment method using more
focused application of the principles and techniques of direct assessment to
identify internal and external corrosion in a covered transmission pipeline
segment.
Covered segment or covered pipeline segment means a segment of gas
transmission pipeline located in a high consequence area. The terms gas and
transmission line are defined in §192.3.
Direct assessment is an integrity assessment method that utilizes a process to
evaluate certain threats (i.e., external corrosion, internal corrosion and stress
corrosion cracking) to a covered pipeline segment's integrity. The process
includes the gathering and integration of risk factor data, indirect examination or
analysis to identify areas of suspected corrosion, direct examination of the
pipeline in these areas, and post assessment evaluation.
High consequence area means an area established by one of the methods
described in paragraphs (1) or (2) as follows:
(1) An area defined as-
(i) A Class 3 location under §192.5; or
(ii) A Class 4 location under §192.5; or
(iii) Any area in a Class 1 or Class 2 location where the potential impact
radius is greater than 660 feet (200 meters), and the area within a
potential impact circle contains 20 or more buildings intended for
human occupancy; or
(iv) Any area in a Class 1 or Class 2 location where the potential impact
circle contains an identified site.
(2) The area within a potential impact circle containing-
(i) 20 or more buildings intended for human occupancy, unless the
exception in paragraph (4) applies; or
(ii) An identified site.
(3) Where a potential impact circle is calculated under either method (1) or
(2) to establish a high consequence area, the length of the high
consequence area extends axially along the length of the pipeline from
the outermost edge of the first potential impact circle that contains either
an identified site or 20 or more buildings intended for human occupancy
to the outermost edge of the last contiguous potential impact circle that
§192.903 Page 4

<<<PAGE 9>>>

contains either an identified site or 20 or more buildings intended for
human occupancy. (See Figure E.I.A. in Appendix E.)
(4) If in identifying a high consequence area under paragraph (1)(iii) of this
definition or paragraph (2)(i) of this definition, the radius of the potential
impact circle is greater than 660 feet (200 meters), the operator may
identify a high consequence area based on a prorated number of buildings
intended for human occupancy with a distance of 660 feet (200 meters)
from the centerline of the pipeline until December 17, 2006. If an
operator chooses this approach, the operator must prorate the number of
buildings intended for human occupancy based on the ratio of an area
with a radius of 660 feet (200 meters) to the area of the potential impact
circle (i.e., the prorated number of buildings intended for human
occupancy is equal to 20 x (660 feet) [or 200 meters]/potential impact
radius in feet [or meters]**2).
Identified site means each of the following areas:
(a) An outside area or open structure that is occupied by twenty (20) or more
persons on at least 50 days in any twelve (12)-month period. (The days need
not be consecutive.) Examples include but are not limited to, beaches,
playgrounds, recreational facilities, camping grounds, outdoor theaters,
stadiums, recreational areas near a body of water, or areas outside a rural
building such as a religious facility; or
(b) A building that is occupied by twenty (20) or more persons on at least
five (5) days a week for ten (10) weeks in any twelve (12)- month period.
(The days and weeks need not be consecutive.) Examples include, but are not
limited to, religious facilities, office buildings, community centers, general
stores, 4-H facilities, or roller skating rinks; or
(c) A facility occupied by persons who are confined, are of impaired
mobility, or would be difficult to evacuate. Examples include but are not
limited to hospitals, prisons, schools, day-care facilities, retirement facilities
or assisted-living facilities.
Potential impact circle is a circle of radius equal to the potential impact radius
(PIR).
Potential impact radius (PIR) means the radius of a circle within which the
potential failure of a pipeline could have significant impact on people or
property. PIR is determined by the formula r = 0.69* (square root of (p*d \2\)),
where `r' is the radius of a circular area in feet surrounding the point of failure,
`p' is the maximum allowable operating pressure (MAOP) in the pipeline
segment in pounds per square inch and `d' is the nominal diameter of the pipeline
in inches.
Note: 0.69 is the factor for natural gas. This number will vary for other gases
depending upon their heat of combustion. An operator transporting gas other
than natural gas must use section 3.2 of ASME/ANSI B31.8S-2001 (Supplement
to ASME B31.8; incorporated by reference, see §192.7) to calculate the impact
radius formula.
§192.903 Page 5

<<<PAGE 10>>>

Origin of Code Last Amendment Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Remediation is a repair or mitigation activity an operator takes on a covered
segment to limit or reduce the probability of an undesired event occurring or the
expected consequences from the event.
Amdt. 192-95, 68 FR 69778, December 15, 2003
Amdt. 192-103A, 72 FR 4655, February 1, 2007
Interpretation: WINDOT 192.903 1 Date: 08-15-2008
"Should the property boundary of a golf course be considered as a 'recreational
facility' and therefore an identified site? It is our intention to only count golf course
boundaries as identified sites where they are occupied by 20 or more persons within
the PIR [potential impact radius] at one time for at least 50 days in any 12 month
period. Is this an acceptable interpretation of the rule with regard to golf courses?"
The gas integrity management program (IMP) rules are intended to protect identified
sites occupied by 20 or more persons for specified periods. While it is possible for
20 or more persons to congregate near the boundary of a golf course inside a
pipeline's PIR, these persons would likely be in transit and cannot truly be said to
"occupy" the area as intended by the regulations. Therefore, such a location would
not be an identified site per §192.903.
PHMSA does not recommend using a golf course boundary to define an identified
site because the boundary, in and of itself, is of little value. Instead, we recommend
looking for sites such as a clubhouse, practice greens, or combinations of sites, such
as a putting green near a tee box, to find areas on a golf course that are occupied by
20 or more persons for the specified periods. These could be identified sites.
Advisory Bulletin ADB-03-03
Identified sites for possible inclusion as high consequence areas (HCAs) in gas
integrity management programs.
On August 6, 2002, RSPA/OPS published a final rule on how to identify the
populated areas near a pipeline for which additional protections would be required
(67 FR 50824). These “high consequence areas” (HCAs) include not only
population areas already identified by pipeline operators through the longstanding
Class location definitions, but also “identified sites,” 49 CFR 192.761(f). Inclusion
of identified sites is intended to pick up isolated population areas which are not
picked up through the Class location process. These could include isolated nursing
homes, schools, and campgrounds that may be close enough to the pipeline to be at
risk should there be a pipeline failure. Commenters expressed concerns that what
was intended to be a relatively simple task, identifying certain sites as high
consequence areas, could become a never-ending search. RSPA/OPS is providing
guidance in this advisory bulletin to provide the necessary clarification. With this
guidance, operators can identify sites in preparation for required assessments and
integrity management programs. The public will receive the assurance that the
search for “identified sites” for inclusion in integrity management programs is
clearly understood and thorough. The advisory bulletin provides guidance on a good
faith effort in conducting this search.
§192.903 Page 6

<<<PAGE 11>>>

Other Reference
Material &
Source
ASME B31.8S-2004, Supplement to B31.8 on Managing System Integrity of Gas
Pipelines, Section 3
Gas Piping Technology Committee (GPTC)
Part 192, Appendix E.I
TTO-13, Potential Impact Radius Formulae for Flammable Gases Other
Than Natural Gas Subject to 49 CFR 192, June 2005
TTO-14, Derivation of Potential Impact Radius Formulae for Vapor
Cloud Dispersion Subject to 49 CFR 192, January 2005
PHMSA Gas Transmission Integrity Management FAQs:
17 What is an identified site?
119 Can I use normal operating pressure in my potential impact circle
calculations if that pressure is significantly below MAOP?
144 What is the preferred method for calculating the Potential Impact Radius
(PIR) of a leak of a non-flammable gas within the context of Pipeline
Integrity Management? The regulation refers to ASME B31.8S-2004
Section 3.2 for calculation of PIR for gases other than natural gas. However,
this document only deals with flammable gases. ASME B31.8S-2004 allows
alternate models to be used for calculating impact radius, but provides no
guidance as to preferred methods of modeling non-flammable or corrosive
gases.
208 Is the derivation of the PIR equation publicly available?
211 What is the time period for the 20 persons in an area? 20 people for 10
min/day, 20 people for 2 hours/day, 20 people for 8 hours/day?
Guidance
Information
1. Definitions included in IM plans must be consistent with those found in
§192.903.
2. The formula for calculation of the potential impact radius must be consistent
with 192.903 requirements [r = 0.69* (square root of (p*d \2\))] and the
pressure used in the formula must be based on maximum allowable operating
pressure (MAOP).
3. Equation for PIR can only be used for flammable gas. The factor (0.69) may
vary according to the flammability of the actual gas compositions (see TTO-
13 or ASME B31.8S-2004, Section 3.2).
4. Failure to have procedures to address this Integrity Management element
should be cited under the appropriate paragraph of §192.911.
5. Selected Final orders referencing §192.903
a) Indiana Gas Co. Inc., [2-2007-1014], (July 15, 2010), Item 2B, Operator
failed to ensure that accurate maximum allowable operating pressures were
used to determine the potential impact radius.
§192.903 Page 7

<<<PAGE 12>>>

Examples of a
Probable
Violation or
Inadequate
Procedures
1. Definitions are not consistent with Part 192.
2. Records do not demonstrate the proper factor (i.e. - .69 for pipeline quality
natural gas) for calculating potential impact radius was used.
3. MAOP was not used to calculate the PIR.
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. Integrity Management Plan or Program, or applicable portion that shows an
omission or deficiency in the Plan or Program.
2. Records.
3. Formula for calculating PIR.
4. Records of product being transported.
5. Documented conversations with operator or contractor personnel.
6. Documented conversations with operator or contractor personnel identifying
inconsistencies or problems regarding IM definitions.
Other Special
Notations
§192.903 Page 8

<<<PAGE 13>>>

Enforcement
Part 192 Gas Transmission Pipeline Integrity Management
Guidance
Revision Date 12/7/2015
Code Section §192.905
Section Title How does an operator identify a high consequence area?
Existing Code
Language
(a) General. To determine which segments of an operator's transmission pipeline
system are covered by this subpart, an operator must identify the high
consequence areas. An operator must use method (1) or (2) from the
definition in §192.903 to identify a high consequence area. An operator may
apply one method to its entire pipeline system, or an operator may apply one
method to individual portions of the pipeline system. An operator must
describe in its integrity management program which method it is applying to
each portion of the operator's pipeline system. The description must include
the potential impact radius when utilized to establish a high consequence area.
(See appendix E.I. for guidance on identifying high consequence areas.)
(b)(1) Identified sites. An operator must identify an identified site, for purposes
of this subpart, from information the operator has obtained from routine
operation and maintenance activities and from public officials with safety
or emergency response or planning responsibilities who indicate to the
operator that they know of locations that meet the identified site criteria.
These public officials could include officials on a local emergency
planning commission or relevant Native American tribal officials.
(2) If a public official with safety or emergency response or planning
responsibilities informs an operator that it does not have the information
to identify an identified site, the operator must use one of the following
sources, as appropriate, to identify these sites.
(i) Visible marking (e.g., a sign); or
(ii) The site is licensed or registered by a Federal, State, or local
government agency; or
(iii) The site is on a list (including a list on an internet web site) or map
maintained by or available from a Federal, State, or local government
agency and available to the general public.
(c) Newly identified areas. When an operator has information that the area
around a pipeline segment not previously identified as a high consequence area
could satisfy any of the definitions in §192.903, the operator must complete the
evaluation using method (1) or (2). If the segment is determined to meet the
definition as a high consequence area, it must be incorporated into the operator's
baseline assessment plan as a high consequence area within one year from the
date the area is identified.
Origin of Code Amdt. 192-95, 68 FR 69778, December 15, 2003
Last Amendment
§192.905 Page 9

<<<PAGE 14>>>

Interpretation
Summaries
Advisory
Bulletin/Alert
Notice
Summaries
Other Reference
Material &
Source
Advisory Bulletin ADB-03-03
Identified sites for possible inclusion as high consequence areas (HCAs) in gas
integrity management programs.
On August 6, 2002, RSPA/OPS published a final rule on how to identify the
populated areas near a pipeline for which additional protections would be required
(67 FR 50824). These “high consequence areas” (HCAs) include not only
population areas already identified by pipeline operators through the longstanding
Class location definitions, but also “identified sites,” 49 CFR 192.761(f). Inclusion
of identified sites is intended to pick up isolated population areas which are not
picked up through the Class location process. These could include isolated nursing
homes, schools, and campgrounds that may be close enough to the pipeline to be at
risk should there be a pipeline failure. Commenters expressed concerns that what
was intended to be a relatively simple task, identifying certain sites as high
consequence areas, could become a never-ending search. RSPA/OPS is providing
guidance in this advisory bulletin to provide the necessary clarification. With this
guidance, operators can identify sites in preparation for required assessments and
integrity management programs. The public will receive the assurance that the
search for “identified sites” for inclusion in integrity management programs is
clearly understood and thorough. The advisory bulletin provides guidance on a good
faith effort in conducting this search.
ASME B31.8S-2004, Supplement to B31.8 on Managing System Integrity of Gas
Pipelines, Section 3
Part 192, Appendix E.I
Supplemental Guidance Appendix A.01, Protocol Guidance for the Identification of
High Consequence Areas.
PHMSA Gas Transmission Integrity Management FAQs:
17 What is an identified site?
18 Are there practical limits on an operator’s search for identified sites?
19 What are OPS expectations for operators to determine new or changed
HCAs?
20 When must newly-identified HCAs be included in the program?
117 How often must an operator update its building density survey and list of
identified sites to determine if new HCAs have been created?
120 Who is an appropriate safety authority for locating identified sites?
143 When determining "identified sites", does one have to consider standing
traffic on roads/expressways under the "outside area or open structure"
portion of the definition? If so, is there any guidance on how many people
per vehicle should be used to compute the total of 20?
170 Must an operator continue to contact public safety officials in order to locate
identified sites even if they don’t respond?
§192.905 Page 10

<<<PAGE 15>>>

176 Is a single home housing a disabled person considered an identified site?
191 If a pipeline is determined to fall within an HCA due to its class location,
does the operator also have to identify identified sites?
195 How were the Fire Marshals notified of providing assistance in locating
identified sites? Is there written communication (i.e., documentation) that
operators can reference?
233 Does growth of an existing HCA, which introduces new length of pipeline
segment into the HCA, constitute a "newly-identified HCA?"
Guidance
Information
1. The §192.903 definitions provided are to determine identified sites that may
be considered an HCA for a specific pipeline operator as the regulations for
192.905 are applied.
2. Each operator should have maps of their pipelines systems along with
identified HCA’s along the pipeline route. The operator must use system
maps or other suitably detailed means to identify pipeline segment locations
that are located in high consequence areas.
3. The operator's process must describe how to implement methods (1) and/or
(2) in order to identify high consequence areas (HCAs). The operator's must
document the method used for each portion of the pipeline system.
4. The operator must periodically look for changes along its pipeline to identify
new HCAs. Additionally, those with no IM Program must continually take
measures to look for new HCAs along their pipelines.
5. Operators were allowed to pro rate house counts in determining whether an
HCA area existed. The time frame for this expired in December 2006 and
prorating is no longer allowed.
6. Failure to have a process/procedure to identify HCAs or having an inadequate
process describing how to apply Method 1 or 2 should be cited under
§192.911(a).
7. Selected Final Orders Referencing §192.905:
a) Mardi Gras Pipeline, LLC, [4-2009-1007], (December 19, 2011),
Item 1, Operator failed to properly identify those segments of its gas
transmission pipeline system that constituted HCAs.
b) Mardi Gras Pipeline, LLC, [4-2009-1007], (December 19, 2011),
Item 2, Operator failed to use public officials as a resource in the
identification of areas that would qualify as “identified sites” within the
potential impact radius along the pipeline.
c) Northwest Pipeline Corp., [5-2007-1001], (May 2, 2011), Item 1,
Operator failed to describe and document in its IMP which method it had
applied to each portion of its pipeline system to identify HCAs. The
operator also failed to maintain records to support any decision, analysis
or process developed and used to implement its IMP. Specifically, it
alleged that the operator failed to keep documents supporting the
process(es) that had been used to identify each HCA segment.
§192.905 Page 11

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d) Northwest Pipeline Corp., [5-2007-1001], (May 2, 2011), Item 2A,
Operator failed to describe in its IMP which method it had applied to each
portion of its pipeline to identify HCA segments. Specifically, the system
maps and the Geographic Information System (GIS) used by the operator
failed to establish a suitable means of documenting segment locations in
HCAs.
e) Northwest Pipeline Corp., [5-2007-1001], (May 2, 2011), Item 2B,
Operator failed to use certain information available to it in cases where
public officials with safety or emergency response or planning
responsibilities had informed the company that they did not have
information delineating identified sites. Specifically, the operator had
failed, by December 17, 2004,to use visible markings, licensing or
registration by a governmental agency, or listing on the Internet or other
public available maps maintained by governmental entities to delineate
identified sites in lieu of obtaining relevant information from public
officials. Also, the operator did not have procedures on how it located
identified sites using such alternative sources of information.
f) Northwest Pipeline Corp., [5-2007-1001], (May 2, 2011), Item 4,
Operator failed to properly identify HCA areas using one of the methods
described in paragraph (1) or (2) of §192.903. There were four separate
violations:
Item 4A, Operator failed to properly apply Method 1 in delineating
HCAs, insofar as the full length of Class 3 and 4 locations was not
included in the HCAs.
Item 4B, Operator failed to properly identify HCA areas using Method 1
under §192.903. Specifically, the operator failed to properly identify
HCAs under portion of Method 1 which calls for the identification of
areas “in a Class 1 or 2 location where the potential impact circle contains
an identified site”. Documentation reviewed during the inspection showed
identified sites on the operator’s Transco system that the company had
failed to include in HCAs. The HCA identification process was flawed
insofar as the company’s field personnel were not even trained in the HCA
identification process until well after December 17, 2004.
Item 4C, Operator failed to properly identify HCA areas using Method 1.
Specifically, the operator defined the term “day” as a continuous 8 hour
period, for purposes of determining whether structures or outdoor areas
qualified as identified sites. This definition was inconsistent with the
regulation, insofar as the 20 or more persons criterion applied to the
presence of people at a particular location at any point in time.
Item 4D, Operator failed to properly
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