# Williams West, Gas and Liquids — Pipeline Safety Interpretation

**Citation:** PI-13-0007  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2014-05-08

PI-13-0007 response to Williams West, Gas and Liquids concerning 195.1.

## Document text

<<<PAGE 1>>>

U.S. Department of Transportation
Pipeline and Hazardous Materials
Safety Administration
1200 New Jersey Ave, S.E.
Washington, D.C. 20590
MAY - 6 2014
Mr. Jared Ellsworth, P.E.
Manager, Pipeline Safety
Williams West, Gas and Liquids
295 Chipeta Way
Salt Lake City, UT 84108
Dear Mr. Ellsworth:
Following a July 15, 2013, preliminary determination ofthe Director, Western Region, Pipeline
and Hazardous Materials Safety Administration (PHMSA), by letter dated August 27, 2013,
Williams Field Services Company (Williams) requested an interpretation of the applicability of
the Federal hazardous liquid pipeline safety regulations at 49 CFR Part 195 to certain facilities it
operates. Specifically, you asked whether the exemption for "in-plant piping systems" in 49
CFR 195.1(b)(8) applies to a pipeline operated by Williams that transports highly volatile liquid
(HVL) from a fenced product storage facility across river and private road crossings to another
fenced location where HVL processing equipment is located. In addition, you asked whether the
tanks that receive product from the incoming pipeline meet the breakout tank definition in
§ 195.2.
First, it should be noted that§ 195.l(a)(l) states, in general, that "any pipeline that transports a
highly volatile liquid is regulated." The list of exemptions in paragraph (b) are narrowly defined.
In its entirety, the exemption for in-plant piping systems in § 195.1 (b )(8) cited by Williams reads
as follows:
§ 195.1 Which pipelines are covered by this Part?
(a) Covered. Except for the pipelines listed in paragraph (b) of this
Section, this Part applies to pipeline facilities and the transportation of
hazardous liquids or carbon dioxide associated with those facilities in or
affecting interstate or foreign commerce, including pipeline facilities on
the Outer Continental Shelf (OCS). Covered pipelines include, but are not
limited to:
(1) Any pipeline that transports a highly volatile liquid;
(2) ...
The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written
clarifications of the Regulations ( 49 CFR Parts 190-199) in the form of interpretation letters. These letters reflect
the agency's current application of the regulations to the specific facts presented by the person requesting the
clarification. Interpretations do not create legally-enforceable rights or obligations and are provided to help the
public understand how to comply with the regulations.

<<<PAGE 2>>>

2
(b) Excepted. This Part does not apply to any of the following:
(1) ...
(8) Transportation of hazardous liquid or carbon dioxide through onshore
production (including flow lines), refining, or manufacturing facilities or
storage or in-plant piping systems associated with such facilities;
Based on the information provided in your request, it appears that the facilities involved are
storage and processing facilities, not production, manufacturing, or refining facilities. Therefore,
the exemption for "in-plant piping systems associated with such facilities" would not apply. In
addition, you stated that the HVL pipeline running between the two fenced locations crosses a
stream. A failure of the pipeline could potentially impact the water in the stream which in tum,
could impact the safety of other properties beyond Williams' property. In some circumstances, a
pipeline transporting hazardous liquids across rivers or streams can be subject to the regulations
even if the same entity owns the land on either side of the river or strearn.1
With regard to your second question, under§ 195.2 a breakout tank is defined as:
Breakout tank means a tank used to (a) relieve surges in a hazardous liquid pipeline
system or (b) receive and store hazardous liquid transported by a pipeline for reinjection
and continued transportation by pipeline.
In this case, the HVL is received from the incoming pipeline, stored in the tanks and/or
transported to and from the HVL processing area, and ultimately reinjected into a pipeline for
continued transportation. Therefore, these tanks appear to meet the definition of breakout tanks.
Please note that this response to your August 27, 2013, request reflects PHMSA's preliminary
views of the applicability of Part 195 regulations based on the limited information of the
description of the facilities in your letter. PHMSA may need to collect additional information
and possibly conduct a site visit to make a final determination.
If we can be of further assistance, please contact Tewabe Asebe of my staff at 202-366-5523.
/
/~
Director, Office of Standards
and Rulemaking
1 In some states, the land underneath the river or stream bed is deeded to the property owner.
The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written
clarifications of the Regulations ( 49 CFR Parts 190-199) in the form of interpretation letters. These letters reflect
the agency's current application of the regulations to the specific facts presented by the person requesting the
clarification. Interpretations do not create legally-enforceable rights or obligations and are provided to help the
public understand how to comply with the regulations.

<<<PAGE 3>>>

August27, 2013
Mr. Jeffrey D. Wiese
Associate Administrator for Pipeline Safety
Office of Pipeline Safety (PHP-30)
PHMSA, U.S. Department of Transportation
1200 New Jersey Ave., SE
Washington, DC 20590-0001
RE: Request for Written Regulatory Interpretation
Williams Field Services Company - OPI D #30826
Dear Mr. Wiese:
Williams Field Services Company, in response to a July 15, 2013 letter received from the
DOT/PHMSA, Western Region, respectfully seeks, pursuant to CFR 49, Part 190.11 (b)(1 ).
official interpretation answering the two questions detailed below regarding CFR 49, Parts
195.1 (b)(8) and 195.2. Williams believes current operation of the subject pipeline is fully
compliant with applicable regulatory requirements.
1. Is a plant pipeline used to transfer HVL product to a fenced storage tank facility located
on plant property but outside the plant fence and upstream of a pressure influencing
device, subject to 49 CFR Part 195 pipeline safety regulations?
• CFR 49, Part 195.1 (b)(8) exempts in-plant piping systems and associated
facilities, such as storage.
2. Are storage tanks used only to receive and store product transferred from a plant and not
intended to relieve surges or to receive and store hazardous liquids transported by a
pipeline for reinjection and continued transportation by pipeline considered breakout
tanks?
• CFR, 49, Part 195.2 Definitions. Breakout tank means a tank used to (a) relieve
surges in a hazardous liquid pipeline system or (b) receive and store hazardous
liquid transported by a pipeline for reinjection and continued transportation by
pipeline.
Please see the attached schematic depicting the transfer pipeline and plant storage tank facility
(Attachment 1 ).
Sincerely,
UuUf!t-
Jared Ellsworth, P.E.
Williams West- Gas and Liquids
Manager- Pipeline Safety
295 Chipeta Way
Salt Lake City, UT 84108
Office: 801 .584.6539
Mobile: 801.243.5365
Attachment (1)
cc: Chris Hoidal

<<<PAGE 4>>>

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Attachment 1

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/2013/Williams-PI-13-0007-05-08-2014-Part195.1.pdf>
- Source ID: `phmsa`
- SHA-256: `fda504e04562825d242db604d5bd862ef9f39ee5b896483201936d211da4f802`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T23:45:36.885Z
- Document slug: `phmsa-interpretation-pi-13-0007`

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