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 15 - MAINTENANCE
Section 6-77-179 - Transmission lines: permanent field repair of imperfections and damages
Universal Citation: HI Admin Rules 6-77-179
Current through August, 2024
(a) Except as provided in subsection (b), each imperfection or damage that impairs the serviceability of a segment of steel transmission line operating at or above forty percent of SMYS must be repaired as follows:
(1) If it is feasible to
take the segment out of service, the imperfection or damage must be removed by
cutting out a cylindrical piece of pipe and replacing it with pipe of similar
or greater design strength;
(2) If
it is not feasible to take the segment out of service, a full encirclement
welded split sleeve of appropriate design must be applied over the imperfection
or damage; and
(3) If the segment
is not taken out service, the operating pressure must be reduced to a safe
level during the repair operations.
(b) Submerged offshore pipelines and submerged pipelines in inland navigable waters may be repaired by mechanically applying a fully encirclement split sleeve of appropriate design over the imperfection or damage.
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