# HAR 6-77-129 External corrosion control: monitoring

**Citation:** HAR 6-77-129  
**Type / status:** regulation / current  
**Agency:** Hawaii Public Utilities Commission  
**Effective:** 1994-09-03  
**Published:** 1994-04-15

cathodic protection must be tested at least once each calendar year, but with intervals not exceeding fifteen months, to determine whether the cathodic protection meets the requirements of section 6-77-128. However, if tests at those intervals are impractical for separately protected short sections 

## Document text

cathodic protection must be tested at least once each calendar year, but with intervals not exceeding fifteen months, to determine whether the cathodic protection meets the requirements of section 6-77-128. However, if tests at those intervals are impractical for separately protected short sections of mains or transmission lines; not in excess of 100 feet, or separately protected service lines, these pipelines may be surveyed on a sampling basis. At least ten percent of these protected structures, distributed over the entire system must be surveyed each calendar year, with a different ten percent checked each subsequent year, so that the entire system is tested in each ten-year period. (b) Each cathodic protection rectifier or other impressed current power source must be inspected six times each calendar year, but with intervals not exceeding two and one- half months, to insure that it is operating. (c) Each reverse current switch, each diode, and each interference bond whose failure would jeopardize structure protection must be electrically checked for proper performance six times each calendar year, but with intervals not exceeding two and one- half months. Each other interference bond must be checked at least once each calendar year, but with intervals not exceeding fifteen months. (d) Each operator shall take prompt remedial action to correct any deficiencies indicated by the monitoring. (e) After the initial evaluation required by sections 6-77-124(b) and (c), and section 6-77 -125(b), each operator shall, at intervals not exceeding three years, reevaluate its unprotected pipelines and cathodically protect them in accordance with this subchapter in areas in which active corrosion is found. The operator shall determine the areas of active corrosion by electrical survey, or where electrical survey is impractical, by the study of corrosion and leak history records, by leak detection survey, or by other means. [Eff 1, 1990) ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.465, October

## 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: `6793034f7e9d40c3a69513e0c954f1e2cbbca09368960722bc30c0812c4cfc52`
- Retrieved: 2026-08-12T08:22:24.168Z
- Exported: 2026-08-24T17:52:50.461Z
- Document slug: `hi-har-har-6-77-129`

### 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 192.465",
      "referenceType": "federal_regulation",
      "url": "https://www.ecfr.gov/current/title-49/section-192.465",
      "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"
    },
    {
      "citation": "HAR 6-77-128",
      "referenceType": "state_regulation",
      "url": "https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf"
    },
    {
      "citation": "HAR 6-77-124",
      "referenceType": "state_regulation",
      "url": "https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf"
    }
  ],
  "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"
}
```