# Amoco Production Company — Pipeline Safety Interpretation

**Citation:** PI-93-042  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1993-07-20

PI-93-042 response to Amoco Production Company concerning 192.1.

## Document text

<<<PAGE 1>>>

July 20, 1993
Mr. J. N. Jaggers
Manager, Operations
Amoco Production Company
Northwestern U.S. Business Unit
Amoco Building
1670 Broadway
Post Office Box 800
Denver, CO 80201
Dear Mr. Jaggers:
I am responding to your letter of May 26, 1993, concerning a plan to construct two 12-
inch pipelines, designated A and B, to transport nitrogen and produced gas between two
Amoco gas plants in southwest Wyoming. You asked whether the pipelines will be
subject to the Department's pipeline safety regulations.
The Department's regulations applicable to gas pipeline transportation in or affecting
interstate or foreign commerce are in Parts 191, 192, and 199 of Title 49 of the Code of
Federal Regulations. These regulations, which apply to the transportation of natural gas
or gas that is flammable, toxic, or corrosive, govern reporting, recordkeeping, design,
construction, testing, operation, maintenance, and drug testing. I have enclosed a copy of
the regulations for your use.
Your letter shows that pipeline A will transport nitrogen (with a trace of methane) until
1998, when it will transport nitrogen or produced gas. Pipeline B will transport nitrogen
or produced gas until 1998, when it will transport only produced gas. Under these
circumstance, Amoco intends to use both pipelines A and B, either at the outset or in the
future, to transport produced gas, which is a gas covered by the regulations. Thus, both
pipelines must be designed, constructed, and tested according to Part 192 requirements.
In addition, while the pipelines transport produced gas, they must meet Part 191, the
operation and maintenance (including corrosion control) requirements of Part 192, and
Part 199.
dal\192.1\93-07-20

<<<PAGE 2>>>

These requirements would not apply during the transportation of nitrogen, a gas not
covered by the regulations.
Sincerely,
Cesar De Leon
Director, Regulatory Programs
Office of Pipeline Safety
Enclosure
dal\192.1\93-07-20

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1993/PI93042.pdf>
- Source ID: `phmsa`
- SHA-256: `02261b5379b9ece402ec888192e92419a8c138dc2b45ad2178420db8c90fea48`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T15:01:39.234Z
- Document slug: `phmsa-interpretation-pi-93-042`

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