RegulationsHAR 6-77-121RegulationcurrentHAR 6-77-121HAR 6-77-121 ScopeCurrent as of 1994-09-03 Government sourceHawaii Public Utilities CommissionOfficial agency materialView source 2 passagesof metallic pipelines from external, internal, and atmospheric corrosion. [Eff ] (Auth: HRS '269-6) (Imp: 49#C.F.R. '192.451, October 1, 1990)#