# HAR 6-77-54 Compressor stations: emergency shutdown **Citation:** HAR 6-77-54 **Type / status:** regulation / current **Agency:** Hawaii Public Utilities Commission **Effective:** 1994-09-03 **Published:** 1994-04-15 compressor stations of 1,000 horsepower or less, each compressor station must have an emergency shutdown system that meets the following: (1) It must be able to block gas out of the station and blow down the station piping; (2) It must discharge gas from the blowdown piping at a location where the g ## Document text compressor stations of 1,000 horsepower or less, each compressor station must have an emergency shutdown system that meets the following: (1) It must be able to block gas out of the station and blow down the station piping; (2) It must discharge gas from the blowdown piping at a location where the gas will not create a hazard; (3) It must provide means for the shutdown of gas compressing equipment, gas fires, and electrical facilities in the vicinity of gas headers and in the compressor building, except, that: (A) Electrical circuits that supply emergency lighting required to assist station personnel in evacuating the compressor building and the area in the vicinity of the gas headers must remain energized; and (B) Electrical circuits needed to protect equipment from damage may remain energized; (4) It must be operable from at least two locations, each of which is: (A) Outside the gas area of the station; (B) Near the exit gates, if the station is fenced, or near emergency exits, if not fenced; and (C) Not more than 500 feet from the limits of the station. (b) If a compressor station supplies gas directly to a distribution system with no other adequate source of gas available, the emergency shutdown system must be designed so that it will not function at the wrong time and cause an unintended outage on the distribution system. (c) On a platform located offshore or in inland navigable waters, the emergency shutdown system must be designed and installed to actuate automatically by each of the following events: (1) In the case of an unattended compressor station: (A) When the gas pressure equals the maximum allowable operating pressure plus fifteen percent; or (B) When an uncontrolled fire occurs on the platform; and (2) In the case of a compressor station in a building: (A) When an uncontrolled fire occurs in the building; or (B) When the concentration of gas in air reaches fifty percent or more of the lower explosive limit in a building which has a source of ignition. (d) For the purpose of subsection (c)(2)(B), an electrical facility which conforms to Class 1, Group D of the National Electrical Code is not a source of ignition. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.167, October 1, 1990) ## Provenance - Official: Yes - Source: - Source ID: `hi-puc-har-6-77` - SHA-256: `efa7492af3117475122544fb3c4b08d32d780f9f783b11fcbc837914c9592ccd` - Retrieved: 2026-08-12T08:22:24.168Z - Exported: 2026-08-24T09:02:08.867Z - Document slug: `hi-har-har-6-77-54` ### Source metadata ```json { "jurisdiction": "US-HI", "chapter": "HAR Chapter 6-77", "provisionKind": "section", "adoptedOn": "1994-04-15", "filedOn": "1994-08-24", "exactEffectiveDateAvailableInPublication": true, "publicationStatus": "officially-published-superseded-slated-for-repeal", "phmsaProgramParticipant": false, "stateCertificationRepresented": false, "federalInspectionAndEnforcement": [ "interstate gas", "intrastate gas", "interstate hazardous liquid", "intrastate hazardous liquid" ], "fixedFederalBaseline": "1990-10-01", "editorialModernizationApplied": false, "references": [ { "citation": "49 CFR 192.167", "referenceType": "federal_regulation", "url": "https://www.ecfr.gov/current/title-49/section-192.167", "incorporatedEdition": "1990-10-01" }, { "citation": "HRS 269-6", "referenceType": "state_statute", "url": "https://data.capitol.hawaii.gov/hrscurrent/Vol05_Ch0261-0319/HRS0269/HRS_0269-0006.htm" } ], "caveats": { "exactScope": "Complete substantive text of the Hawaii Public Utilities Commission publication of HAR Chapter 6-77: 196 non-reserved numbered sections and Appendices A through D. Four expressly reserved section slots are inventory-only. The PUC's April 2026 page links a 160-page signed scan; an official 178-page text-layer copy from Budget and Finance is used as the higher-quality transcription aid. The publication is an April 15, 1994 adoption, filed August 24 and effective September 3, 1994, based on the October 1, 1990 federal text; it is not a current restatement of federal pipeline standards.", "applicability": "Hawaii is not represented as certified, as an agreement state, or as an interstate agent under the PHMSA federal-state pipeline safety program. PHMSA states that its Office of Pipeline Safety inspects and enforces federal pipeline safety regulations for interstate and intrastate gas and hazardous-liquid pipelines in Hawaii. Chapter 6-77 may remain relevant as published state utility material, but it must not be used to infer current Hawaii inspection or enforcement authority.", "currentness": "The Hawaii PUC still links Chapter 6-77 on its official rules page, updated April 2026. Hawaii's official 2022 periodic rules-review report separately says Chapter 6-77 is to be repealed, was superseded by statute and a federal takeover letter, and cites 2009 Act 25. Because the PUC page does not mark the chapter repealed, this connector preserves the published text with an explicit superseded/slated-for-repeal warning rather than declaring an unproved completed administrative repeal.", "incorporation": "The chapter repeatedly identifies the October 1, 1990 edition of 49 CFR Parts 191 and 192 and its appendices as the implemented source. That fixed, obsolete baseline is preserved exactly. Current federal text, later amendments, and current editions of incorporated private standards must not be silently substituted when researching what this publication says.", "excludedScope": "This connector excludes HAR Chapter 6-83 one-call damage prevention, utility rates and service standards, statutes as standalone documents, dockets, orders, tariffs, federal text, current federal amendments, and the full text of incorporated private standards. Those materials require separate completeness, currentness, applicability, and rights analysis.", "rights": "Official Hawaii and PHMSA artifacts are retained with attribution and SHA-256 provenance. Public access does not establish unrestricted rights in site presentation, state marks, forms, or incorporated private standards. The connector records citations to private standards but makes no independent rights claim for those works." }, "region": "HI" } ```