# HAR 6-77-160 Change in class location: required study

**Citation:** HAR 6-77-160  
**Type / status:** regulation / current  
**Agency:** Hawaii Public Utilities Commission  
**Effective:** 1994-09-03  
**Published:** 1994-04-15

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 pipe

## Document text

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. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.609, October 1, 1990)

## Provenance

- Official: Yes
- Source: <https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf>
- Source ID: `hi-puc-har-6-77`
- SHA-256: `c85a8164ea40cc0d40022b9b6a6575f8770558a0bcd2c5ab20621e3b5026645f`
- Retrieved: 2026-08-12T08:22:24.168Z
- Exported: 2026-08-24T11:13:06.362Z
- Document slug: `hi-har-har-6-77-160`

### 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  "publicationStatus": "officially-published-superseded-slated-for-repeal",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 192.609",
      "referenceType": "federal_regulation",
      "url": "https://www.ecfr.gov/current/title-49/section-192.609",
      "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"
}
```