# Union Carbide Corporation — Pipeline Safety Interpretation

**Citation:** PI-70-008  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1970-11-30

PI-70-008 response to Union Carbide Corporation concerning 192.13, 195.1.

## Document text

<<<PAGE 1>>>

November 30, 1970
Mr. J. J. Kocian
Manager of Pipelines
Union Carbide Corporation
1200 Travis, Suite 912
Houston, Texas 77002
Dear Mr. Kocian:
This is in reply to your letter of November 5, 1970, regarding applicability of 49 CFR, Part 192 to
pipelines carrying ethylene.
It is our interpretation based on the information provided in your letter that the pipelines
concerned are governed by the liquid line regulation, 49 CFR, Part 195, a copy of which is
enclosed for your information. There are no requirements for odorization in this regulation.
If, after you consider the applicable provisions of 49 CFR, Part 195, you have further questions
do not hesitate to ask.
Sincerely,
Joseph C. Caldwell
Director, Acting
Office of Pipeline Safety
Enclosure
dal\192.1-a\13\70-11-30
1

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1970/PI70008.pdf>
- Source ID: `phmsa`
- SHA-256: `327ab30138757375afcea026155b42cfe16783a22aa467b928a1a01ddb8b7cb8`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T17:56:36.098Z
- Document slug: `phmsa-interpretation-pi-70-008`

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