# Gas leak investigation; establishment of service; customer leak complaint records

**Citation:** Mich. Admin. Code R 460.20318  
**Type / status:** regulation / current  
**Agency:** Michigan Public Service Commission  
**Effective:** 2026-05-04  
**Published:** Not stated

Rule 318. (1) An operator shall conduct an investigation of every gas leak report received as soon as possible. If the investigation reveals a hazardous situation, then the operator shall take immediate action to evacuate, repair, or isolate the facilities involved to reduce any danger to the public

## Document text

Rule 318. (1) An operator shall conduct an investigation of every gas leak report received as soon as possible. If the investigation reveals a hazardous situation, then the operator shall take immediate action to evacuate, repair, or isolate the facilities involved to reduce any danger to the public.

(2) A distribution utility shall not establish gas service to an applicant until the utility has made a leakage test, using gas at utilization pressure, to ensure that the applicant's fuel line is gastight and has made a determination that gas odor is detectible, where applicable. If fuel lines are not present upon completion of meter installation, the operator shall comply with all of the following:

(a) A valve shall be installed on the outlet piping of the meter. This valve shall be in the closed position.

(b) The valve shall be tagged with contact information of the distribution utility and notice that the fuel line installation must comply with applicable fuel piping codes.

(c) A mechanical device or fitting that will prevent the flow of gas shall be installed at the outlet piping.

(3) An operator shall keep records of all customer leak complaints and the disposition of the complaints.

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: `e853f5fb74d86d0a10cb477ec31f7863bb7be5a5dc01a37e7688a9c8582ebc49`
- Retrieved: 2026-08-20T08:33:06.234Z
- Exported: 2026-08-23T01:54:53.729Z
- Document slug: `mi-admin-code-r-460-20318`

### Source metadata

```json
{
  "jurisdiction": "US-MI",
  "rule": "R 460.20318",
  "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": [],
  "federalReferences": [],
  "stateReferences": [],
  "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"
}
```