# Distribution system; leakage surveys and procedures

**Citation:** Mich. Admin. Code R 460.20327  
**Type / status:** regulation / current  
**Agency:** Michigan Public Service Commission  
**Effective:** 2026-05-04  
**Published:** Not stated

Rule 327. In addition to the requirements contained in 49 C.F.R. §192.723, which is adopted by reference in R 460.20606, all of the following requirements apply: (a) A gas leak located by a survey that, due to its location or relative magnitude, constitutes a hazard or potential hazard to the public

## Document text

Rule 327. In addition to the requirements contained in 49 C.F.R. §192.723, which is adopted by reference in R 460.20606, all of the following requirements apply:

(a) A gas leak located by a survey that, due to its location or relative magnitude, constitutes a hazard or potential hazard to the public or to buildings shall receive immediate corrective action. Immediate corrective action shall consist of an immediate effort to protect life and property and continuous remedial action thereafter until the condition is no longer hazardous.

(b) An operator shall schedule a gas leak which does not constitute an immediate hazard to the public or to buildings, but which requires scheduled repair within the operator's maintenance manual, for repair within 1 year.

(c) An operator shall ensure that a gas leak which is located by a survey, other than a leak covered by subdivision (a) or (b) of this rule, is subjected to regular surveillance at intervals not exceeding 15 months, but at least once each calendar year.

History: 1998-2000 AACS; 2014 AACS.

## Provenance

- Official: Yes
- Source: <https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf>
- Source ID: `mi-ars-gas-safety`
- SHA-256: `36543c35b27783c91a6a9018f271c826628c37065dfde7807a78238d03b633a2`
- Retrieved: 2026-08-20T08:33:06.234Z
- Exported: 2026-08-22T10:31:45.354Z
- Document slug: `mi-admin-code-r-460-20327`

### Source metadata

```json
{
  "jurisdiction": "US-MI",
  "rule": "R 460.20327",
  "part": "3",
  "partTitle": "ADDITIONAL MINIMUM SAFETY STANDARDS",
  "edition": 27,
  "editionEffectiveOn": "2026-05-04",
  "corpusScope": "complete-current-dedicated-michigan-gas-safety-standards",
  "inventoryCount": 81,
  "currentRuleCount": 78,
  "references": [
    {
      "citation": "49 CFR 192.723",
      "referenceType": "federal-regulation-section",
      "url": "https://www.ecfr.gov/current/title-49/section-192.723"
    },
    {
      "citation": "R 460.20606",
      "referenceType": "michigan-administrative-rule",
      "url": "https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf"
    }
  ],
  "federalReferences": [
    {
      "citation": "49 CFR 192.723",
      "referenceType": "federal-regulation-section",
      "url": "https://www.ecfr.gov/current/title-49/section-192.723"
    }
  ],
  "stateReferences": [
    {
      "citation": "R 460.20606",
      "referenceType": "michigan-administrative-rule",
      "url": "https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf"
    }
  ],
  "statutoryAuthority": [
    "1969 PA 165",
    "MCL 483.152"
  ],
  "hazardousLiquidCoverage": false,
  "scopeCaveat": "This connector is the complete current dedicated Michigan Administrative Code Gas Safety corpus published by ARS/MOAHR from R 460.20101 through R 460.20606. It does not claim all Michigan utility, siting, excavation-damage-prevention, well, environmental, federal, local, or Commission order law. Three headings expressly marked rescinded are retained only in the verified inventory. The MPSC pipeline-safety program does not regulate hazardous-liquid pipelines, and this corpus must not be used to imply that it does.",
  "applicabilityCaveat": "Applicability depends on the definitions and exclusions in R 460.20101 and R 460.20102, MPSC jurisdiction, gas and facility type, intrastate or interstate status, gathering-line classification, operator status, waivers, federal preemption, and rule-specific conditions. MPSC inspects jurisdictional intrastate gas systems and acts as an interstate agent for inspections and investigations; PHMSA retains interstate enforcement authority. MPSC expressly states that its pipeline-safety program lacks hazardous-liquid-pipeline jurisdiction.",
  "incorporationCaveat": "The rules adopt specified editions of 49 CFR parts 40, 191, 192, and 199 and named API, ASME, and NACE/ISO standards. References metadata does not reproduce incorporated material, update a fixed edition, determine whether a provision is superseded, or grant rights in third-party standards. Verify the exact edition and any Michigan additions, exceptions, or superseding language in the current official sources.",
  "publicationCaveat": "The rule text comes from the current ARS/MOAHR Michigan Administrative Code download. The MPSC identifies it as the 27th edition effective May 4, 2026. Historical Guide to the Michigan Gas Safety Standards files, including the 25th edition guide, are not current rule artifacts and are not used by this connector.",
  "rights": "Michigan administrative rule text is official legal material and is preserved with ARS/MOAHR and MPSC attribution. Public availability does not resolve rights in agency seals, site presentation, incorporated federal compilations, API, ASME, NACE/ISO standards, forms, or other third-party material; downstream redistribution requires separate rights review.",
  "rightsReviewRequired": true,
  "region": "MI"
}
```