# Okaloosa County Gas District — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-73-017
- **title:** Okaloosa County Gas District — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1973-06-25
- **effective on:** Not available
- **summary:** PI-73-017 response to Okaloosa County Gas District concerning 192.3.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-017.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-017.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-017
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1973/PI73017.pdf
**body:**

<<<PAGE 1>>>

June 25, 1973
Mr. Jose N. Lozano
Engineer
Okaloosa County Gas District
P. O. Box 548
Valparaiso, Florida 32580
Dear Mr. Lozano:
Your letter of May 31, 1973, asks whether cathodic protection is required for couplings used with
plastic pipe if the couplings are adequately coated and wrapped after installation. You mention
especially the stainless steel rings used with amp-fit couplings.
For buried or submerged pipelines installed after July 31, 1971, §192.455(a)(2) requires cathodic
protection unless the pipeline qualifies for an exception as stated in paragraph (b) or (c) of the
section. Pipeline is defined in §192.3 to include "all parts of those physical facilities through
which gas moves in transportation, including pipe, valves, and other appurtenances attached to
pipe, compressor units, metering stations, regulator stations, delivery stations, holders and
fabricated assemblies." Metallic couplings and stainless steel rings used in couplings for plastic
pipe, therefore, must be cathodically protected. Coating and wrapping after installation do not
fulfill the cathodic protection requirements.
Except for cast iron or ductile iron, where the buried or submerged pipeline was installed before
August 1, 1971, §192.457(b) requires only that it be cathodically protected, not later than August
1, 1976, in areas in which active corrosion is found. Again, this requirement is applicable to
metallic couplings and stainless steel rings used in couplings for plastic pipe.
If you have further questions in this regard, please call on us.
Sincerely,
/signed/
Joseph C. Caldwell
Director
Office of Pipeline Safety
DAL\192\3\73-06-25
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