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 6-77-160 - Change in class location: required study
Current through August, 2024
Whenever an increase in population density indicates a change in class location for a segment of an existing steel pipeline operating at hoop stress that is more than forty percent of SMYS; or indicates that the hoop stress corresponding to the established maximum allowable operating pressure for a segment of existing pipeline is not commensurate with the present class location, the operator shall immediately make a study to determine:
(1) The present class location for the segment involved;
(2) The design, construction, and testing procedures followed in the original construction, and a comparison of these procedures with those required for the present class location by the applicable provisions of this chapter;
(3) The physical condition of the segment of the extent it can be ascertained from available records;
(4) The operating and maintenance history of the segment;
(5) The maximum actual operating pressure and the corresponding hoop stress, taking pressure gradient into account, for the segment of pipeline involved; and
(6) The actual area affected by the population density increase, and physical barriers or other factors which may limit further expansion of the more densely populated area.
