RegulationsHAR 6-77-189RegulationcurrentHAR 6-77-189HAR 6-77-189 Compressor stations: Isolation of equipment for maintenance or alterationsCurrent as of 1994-09-03 Government sourceHawaii Public Utilities CommissionOfficial agency materialView source 2 passagesEach operator shall establish procedures for maintaining compressor stations, including provisions for isolation units or sections of pipe and for purging before returning to service. [Eff ] (Auth: HRS '269-6) (Imp: 49#C.F.R. '192.733, October 1, 1990)#