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 12 - TEST REQUIREMENTS
Section 6-77-146 - Test requirements for pipelines to operate at a hoop stress less than thirty percent of SMYS and at or above 100 p.s.i.g
Universal Citation: HI Admin Rules 6-77-146
Current through August, 2024
Except for service lines and plastic pipelines, each segment of a pipeline that is to be operated at a hoop stress less than thirty percent of SMYS and at or above 100 p.s.i.g. must be tested in accordance with the following:
(1) The pipeline operator must use a test procedure that will ensure discovery of all potentially hazardous leaks in the segment being tested;
(2) If, during the test, the segment is to be stressed to twenty percent or more of SMYS and natural gas, inert gas, or air is the test medium:
(A) A leak test must be
made at a pressure between 100 p.s.i.g. and the pressure required to produce a
hoop stress of 20 percent of SMYS; or
(B) The line must be walked to check for
leaks while the hoop stress is held at approximately twenty percent of
SMYS;
(3) The pressure must be maintained at or above the test pressure for at least one hour.
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