# Continental Industries, Inc. — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-93-043
- **title:** Continental Industries, Inc. — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1993-07-21
- **effective on:** Not available
- **summary:** PI-93-043 response to Continental Industries, Inc. concerning 192.281.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-043.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-043.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-93-043
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1993/PI93043.pdf
**body:**

<<<PAGE 1>>>

July 21, 1993
Mr. Eldon Morain
Vice President
Continental Industries, Inc.
4102 South 74th East Avenue
P.O. Box 994
Tulsa, Oklahoma 74101
Dear Mr. Morain:
This is in response to your letter of June 24, 1993, concerning the pipeline safety standard
in 49 CFR 192.281(e)(2). You asked if a nonmetallic stiffener may be used to comply
with this standard.
Section 192.281(e)(2) provides that for each compression type mechanical joint on plastic
pipe, a rigid internal tubular stiffener, other than a split tubular stiffener, must be used in
conjunction with the coupling. This standard does not regulate the type of material to use
as long as the resulting stiffener is rigid. Also, since the stiffener will be in contact with
gas, the stiffener must meet other applicable material requirements in Subpart B of Part
192.
Sincerely,
Cesar De Leon
Director, Regulatory Programs
Office of Pipeline Safety
dal\192.281\93-07-21
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