# Tennessee Gas Pipeline Co. — Pipeline Safety Interpretation

**Citation:** PI-70-0105  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1970-09-29

PI-70-0105 response to Tennessee Gas Pipeline Co. concerning 192.167.

## Document text

<<<PAGE 1>>>

PI-70-0105
September 29, 1970
Mr. George W. White
Vice President
Tennessee Gas Pipeline Co.
P.O. Box 2511
Houston, Texas 77001
Dear Mr. White:
This is in reply to your letter concerning the application of section 192.167 (a)(4)(ii), of Title 49, Code of
Federal Regulations.
It is our interpretation, that the regulation does not forbid your practice of placing one emergency shutdown
location close to the portion of a compressor station most likely to be occupied, provided that there are also
two places of operation that are near the exit gates in the station fence.
The regulations contained in Part 192 are minimum standards and are not intended in any way to limit
practices which go beyond them in the interest of safety.
You may wish to raise this question at the meeting of the Technical Pipeline Safety Standards Committee
schedules for October 29, 1970, at which the proposed agenda will include possible changes to the standards.
Thank you for your interest in pipeline standards.
Thank you for your interest in pipeline safety.
Sincerely,
Original singed by;
Joseph C. Caldwell
Director, Acting
Office of Pipeline Safety

<<<PAGE 2>>>

Tennessee Gas Pipeline Company
P.O. Box 2511
Houston, Texas 77001
September 17, 1970
Mr. Joseph C. Caldwell
Acting Director
Office of Pipeline Safety
Department of Transportation
400 6th Street, SW
Washington, D.C. 20590
Subject: Suggested Change to Section 192.167, Subpart D, Minimum Federal Safety Standards for Gas
Pipelines.
Dear Joe:
It has been brought to my attention that many of the advisory provisions of 843.431 of the B31.8 Code
concerning compressor station emergency shut-down facilities were carried over into Section 192.67 of the
Federal Regulations with the language changed to make these provisions mandatory. It is not appropriate that
one of these should be mandatory in the sense that it is contained in the Regulation, specifically 192.167
(4)(ii). This provision requires that both emergency shut-down stations be located near exit gates in the station
fence. It is our policy, and has been many years, to place one emergency shut-down location a considerable
distance from the compressor facilities and in the vicinity of an exit gate, but the other is placed near a
building or room that is most likely to be occupied. This will give the operator almost immediate access to the
emergency shut-down location.
I believe this situation can be rectified very simply by eliminating this provision from Subsection (4) and either
not mentioning proximity to gates at all or adding a Subsection (5) which would state that one of the
emergency shut-down stations should be placed in the vicinity of an exit gate.
I do not believe that this revision would necessarily require the approval of the Technical Committee.
Yours very truly,
George W. White
Vice President

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1970/g70-09-29_White_1921.67-lmx.pdf>
- Source ID: `phmsa`
- SHA-256: `5830ee318866f44d6d37126bb6e976078e0e1afe4d5652d9f9c018da9a0761df`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T08:40:15.536Z
- Document slug: `phmsa-interpretation-pi-70-0105`

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