# Memo: Internal — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-72-032
- **title:** Memo: Internal — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1972-07-21
- **effective on:** Not available
- **summary:** PI-72-032 response to Memo: Internal concerning 192.11.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-032.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-032.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-032
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1972/PI72032.pdf
**body:**

<<<PAGE 1>>>

July 21, 1972
Re your telephone conversation with
Mr. Stockton on April 10, 1972
Operation and Compliance Officer
Chief, Technical Division, TSA-32
The statement "In the event of a conflict (between Part 192 and a referenced specification), the
requirements of this part prevail" means that in the event of a conflict between the referenced
specification and Part 192, the requirements of Part 192 will take precedence.
The term "conflict" means an inconsistency between Part 192 and the referenced specification -
where Part 192 requires to do one thing and the referenced specification requires to do something
else. This should not be construed to mean that there is a conflict if either Part 192 or the
referenced specification is silent on any particular matter. If either Part 192 or the referenced
specification requires or prohibits an action and the other regulation is silent on the subject, this
requirement or prohibition will hold. Similarly, if either of the regulations require an action and
the other regulation permits another action, the requirement will prevail.
Therefore, your conclusion is correct on the requirement for using wrought iron, steel, brass,
copper, or aluminum alloy pipe as required by NFPA 58 takes precedence over the requirement
permitting the use of plastic pipe in Part 192.
Cesar DeLeon, TSA-36
dal\192.1-a\11\72-07-21
1
- **truncated:** false
- **body characters:** 1377