# Indiana Public Service Commission — Pipeline Safety Interpretation

**Citation:** PI-71-026  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1971-02-24

PI-71-026 response to Indiana Public Service Commission concerning 191.5.

## Document text

<<<PAGE 1>>>

February 24, 1971
Mr. D. J. Hendrickson
Chief, Utility Safety Section
Indiana Public Service Commission
901 State Office Building
Indianapolis, Indiana 46204
Dear Mr. Hendrickson:
This is in reply to your letter of February 11, 1971, concerning
the interpretation of 49 CFR, Section 191.5(2) requiring
telephonic notice of a leak that required the taking of any
segment of transmission pipe out of service.
You described a situation where a short length of pipe is
intentionally by-passed, so that it may be replaced.
Under ordinary circumstances such as occurrence would not result
in a "leak" which we have interpreted as meaning an unintended
escape of gas. Therefore, when a segment is intentionally
removed from service there is no leak which requires reporting.
We hope this answers your question. If you have further
questions, do not hesitate to ask.
Joseph C. Caldwell
Director, Acting
Office of Pipeline Safety
dal\191.0\5\71-02-24

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1971/PI71026.pdf>
- Source ID: `phmsa`
- SHA-256: `229e67db8d8b92e1bc726dfdb52c904ab778e95594915f0b28e06f473aecffd3`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T11:22:25.055Z
- Document slug: `phmsa-interpretation-pi-71-026`

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