# Scope; conversion of existing pipeline to sour gas service

**Citation:** Mich. Admin. Code R 460.20401  
**Type / status:** regulation / current  
**Agency:** Michigan Public Service Commission  
**Effective:** 2026-05-04  
**Published:** Not stated

Rule 401. (1) The rules in this part are additional requirements for the design, fabrication, installation, inspection, testing, and safety aspects of the operation and maintenance of gas pipeline facilities used in the transportation of sour gas. (2) Operators of pipeline facilities used for the tr

## Document text

Rule 401. (1) The rules in this part are additional requirements for the design, fabrication, installation, inspection, testing, and safety aspects of the operation and maintenance of gas pipeline facilities used in the transportation of sour gas.

(2) Operators of pipeline facilities used for the transportation of sour gas that are under the jurisdiction of the commission shall meet all of the requirements in parts 2, 3, and 5 of these rules, all of the requirements in 49 C.F.R. Part 192, which is adopted by reference in R 460.20606, and all of the additional requirements in this part.

(3) Existing pipeline facilities not designed and built for the transportation of sour gas shall not be converted for use in the transportation of sour gas without prior review and approval of the commission.

History: 1998-2000 AACS; 2003 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: `ad8cf9ee5dfd29103a256c8f029c4870e734a0fce9a6a748fd617bc2cef8f079`
- Retrieved: 2026-08-20T08:33:06.234Z
- Exported: 2026-08-22T14:48:13.820Z
- Document slug: `mi-admin-code-r-460-20401`

### Source metadata

```json
{
  "jurisdiction": "US-MI",
  "rule": "R 460.20401",
  "part": "4",
  "partTitle": "SOUR GAS PIPELINES",
  "edition": 27,
  "editionEffectiveOn": "2026-05-04",
  "corpusScope": "complete-current-dedicated-michigan-gas-safety-standards",
  "inventoryCount": 81,
  "currentRuleCount": 78,
  "references": [
    {
      "citation": "49 CFR Part 192",
      "referenceType": "federal-regulation-part",
      "url": "https://www.ecfr.gov/current/title-49/part-192"
    },
    {
      "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 Part 192",
      "referenceType": "federal-regulation-part",
      "url": "https://www.ecfr.gov/current/title-49/part-192"
    }
  ],
  "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"
}
```