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 14 - OPERATIONS
Section 6-77-167 - Maximum allowable operating pressure: high-pressure distribution systems
Universal Citation: HI Admin Rules 6-77-167
Current through August, 2024
(a) No person may operate a segment of a high pressure distribution system at a pressure that exceeds the lowest of the following pressures, as applicable:
(1) The design pressure of the weakest
element in the segment, determined in accordance with subchapters
5 and
6;
(2) 60 p.s.i.g., for a segment of a
distribution system otherwise designed to operate at over 60 p.s.i.g., unless
the service lines in the segment are equipped with service regulators or other
pressure limiting devices in series that meet the requirements of section
6-77-69(c);
(3) 25 p.s.i.g. in
segments of cast iron pipe in which there are unreinforced bell and spigot
joints;
(4) The pressure limits to
which a joint could be subjected without the possibility of its
parting;
(5) The pressure
determined by the operator to be the maximum safe pressure after considering
the history of the segment, particularly known corrosion and the actual
operating pressures.
(b) No person may operate a segment of pipeline to which subsection (a)(5) applies, unless overpressure protective devices are installed on the segment in a manner that will prevent the maximum allowable operating pressure from being exceeded, in accordance with section 6-77-68.
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