# Pipeline Safety Interpretation PI-83-0108

**Citation:** PI-83-0108  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1983-08-05

PI-83-0108 concerning 192.475.

## Document text

<<<PAGE 1>>>

PI-83-0108
August 5, 1983
Mr. J. B. Haug
Engineering/Design Development
Panhandle Eastern Pipe Line Company
P. O. Box 1348
Kansas City, Missouri 64141
Dear Mr. Haug:
Your letter of July 21, 1983, asks if there is a legal maximum hydrogen sulfide content of
a natural gas stream to be transported both inter and intrastate, and if gas distribution
systems are treated the same.
The only legal limitation that we are aware of on the amount of hydrogen sulfide
permitted in gas is the 0.1 grain of hydrogen sulfide per 100 standard cubic feet
requirement of Section 192.475(c). This limitation is only applicable to gas stored in
pipe-type or bottle-type holders.
Under the Natural Gas Policy Act of 1978, Section 110 and in the Federal Energy
Regulatory Commission (FERC) Order 24, July 25, 1900, RM 88-47, 18 CFR Part
271.1104, a limit of one grain per 100 cubic feet has been established as a dividing line
between what may be charged against producer costs versus pipeline operator costs.
However, this does not place any limit on the amount of hydrogen sulfide that may be
transported by pipeline.
There is no regulatory distinction in the Federal pipeline safety standards for gas
distribution systems relative to hydrogen sulfide content. Individual States may have
additional requirements for intrastate systems as long as they are not incompatible with
the Federal minimum standards.
We hope that this provides the information you need.
Sincerely,
Richard L. Beam
Associate Director for
Pipeline Safety Regulation
Materials Transportation Bureau

<<<PAGE 2>>>

July 21, 1983
Department of Transportation
Office of Pipeline Safety
400 7th St.
S.W., Washington, D.C. 20270
Dear Sirs:
I am writing you in order to determine if there is a legal maximum hydrogen sulphide
content of a natural gas stream to be transported both inter and intra state. Also, are gas
distribution systems treated the same?
If you can refer me to proper legislation or guides, please write me at the address below.
I currently am aware of NACE MR-01-75 (1978) and DOT paragraph 192.475.
Thank you, in advance, for your cooperation.
Sincerely, yours,
J. B. Haug
Panhandle Eastern Pipe Line Co.
Engineering/Design Development
P. O. Box 1348
Kansas City, MO 64141

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1983/g83-08-05_Haug_192.475%20-lmxs.pdf>
- Source ID: `phmsa`
- SHA-256: `b79ec76301e6e4a43c3972356dd5f6e2972a910eb83d69d874bb1c99b448e496`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T19:56:12.064Z
- Document slug: `phmsa-interpretation-pi-83-0108`

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