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 6-77-141 - Remedial measures: cast iron and ductile iron pipelines

(a) General graphitization. Each segment of cast iron or ductile iron pipe on which generalized graphitization is found to a degree where a fracture or any leakage might result, must be replaced.

(b) Localized graphitization. Each segment of cast iron or ductile iron pipe on which localized graphitization is found to a degree where any leakage might result, must be replaced or repaired, or sealed by internal sealing methods adequate to prevent or arrest any leakage.