# Memo: Internal — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-92-022
- **title:** Memo: Internal — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1992-05-28
- **effective on:** Not available
- **summary:** PI-92-022 response to Memo: Internal concerning 192.59.
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- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-92-022.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-92-022
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1992/PI92022.pdf
**body:**

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Date:May 28, 1992
Subject: Use of Multilayer Plastic Pipe
From: Cesar De Leon
Director, Pipeline Safety Regulatory Programs, DPS-10
To: Richard Sanders
Manager, Pipeline Safety Division, DMA-607
This responds to your memo of December 3, 1991, on the use of multilayer plastic
pipe in gas pipelines. Your memo indicated that some forms of multilayer plastic
pipe may have been used in gas pipelines, but that such pipe is not covered by
ASTM D 2513.
As you know, plastic pipe that does not qualify under ASTM D2513 or ASTM
D2517 may not be installed in service under Part 192. (§ 192.59) I considered
your suggestion that an alert notice might be an appropriate response. However,
based on our staff discussion with field personnel, the problem does not seem
potentially widespread enough to warrant an alert notice. As a matter of
noncompliance, I believe it can reasonable be rectified by enforcement actions.
We will continue to monitor this issue to determine its impact on pipeline safety.
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192.59/92-05-28
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