Hawaii Administrative Rules
Title 6 - DEPARTMENT OF BUDGET AND FINANCE
Division - PUBLIC UTILITIES COMMISSION
Chapter 77 - TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE; MINIMUM SAFETY STANDARDS
Subchapter 11 - MINIMUM SAFETY STANDARDS - REQUIREMENTS FOR CORROSION CONTROL
Section 6-77-128 - External corrosion control: cathodic protection
Universal Citation: HI Admin Rules 6-77-128
Current through August, 2024
(a) Each cathodic protection system required by this subchapter must provide a level of cathodic protection that complies with one or more of the applicable criteria contained in Appendix D. If none of these criteria is applicable, the cathodic protection system must provide a level of cathodic protection at least equal to that provided by compliance with one or more of these criteria.
(b) If amphoteric metals are included in a buried or submerged pipeline containing a metal of different anodic potential:
(1)
The amphoteric metals must be electrically isolated from the remainder of the
pipeline and cathodically protected; or
(2) The entire buried or submerged pipeline
must be cathodically protected at a cathodic potential that meets the
requirements of Appendix D for amphoteric metals.
(c) The amount of cathodic protection must be controlled so as not to damage the protective coating or the pipe.
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