Interpretation Response #PI-81-011 ([Northwest Pipeline Corporation] [Lloyd A. Hightower])
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
Response Publish Date:
Company Name: Northwest Pipeline Corporation
Individual Name: Lloyd A. Hightower
Location State: UT Country: US
View the Interpretation Document
Response text:
Mr. Lloyd A. Hightower
Director, Operations
Northwest Pipeline Corporation
P.O. Box 1526
Salt Lake City, Utah 84110
Dear Mr. Hightower:
Your letter of May 1, 1981, requests our approval of an aerial survey technique that has been developed to monitor the level of cathodic protection on a buried pipeline. We understand the technique would be used to comply with 49 CFR 192.465(a), which requires that cathodically protected pipelines be tested annually to determine if protection is at the levels required by §192.463 and Appendix D to Part 192. These regulations do not require the use of specific testing methods, and any technique may be used that accurately shows the cathodic protection levels.
This office does not recommend one test method over another, and our approval is not needed for an operator to use a new method.
Sincerely,
Melvin A. Judah
Acting Associate Director for
Pipeline Safety Regulation
Materials Transportation Bureau
Regulation Sections
| Section | Subject |
|---|---|
| 192.463 | External corrosion control: Cathodic protection |