# External Corrosion Control: Buried or Submerged Components \[49 CFR 193.2629\]

**Citation:** LAC 43:XIII §7929  
**Type / status:** regulation / current  
**Agency:** Louisiana Office of Conservation  
**Effective:** Not stated  
**Published:** Not stated

A. Buried or submerged component that is subject to external corrosive attack must be protected from external corrosion by: 1. material that has been designed and selected to resist the corrosive environment involved; or [49 CFR 193.2629(a)(1)] 2. the following means: a. an external protective coati

## Document text

A. Buried or submerged component that is subject to external corrosive attack must be protected from external corrosion by:

1. material that has been designed and selected to resist the corrosive environment involved; or [49 CFR 193.2629(a)(1)]

2. the following means:

a. an external protective coating designed and installed to prevent corrosion attack and to meet the requirements of §192.461 of this chapter; and [49 CFR 193.2629(a)(2)(i)]

b. a cathodic protection system designed to protect components in their entirety in accordance with the requirements of LAC 43:XIII.2115 of this chapter and placed in operation before October 23, 1981, or within 1 year after the component is constructed or installed, whichever is later. [49 CFR 193.2629(a)(2)(ii)]

B. Where cathodic protection is applied, components that are electrically interconnected must be protected as a unit. [49 CFR 193.2629(b)]

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:551.C.

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 44:1058 (June 2018).

## Provenance

- Official: Yes
- Source: <https://www.doa.la.gov/doa/osr/louisiana-administrative-code/>
- Source ID: `la-osr-lac`
- SHA-256: `49a55b54b4887d875514972f04ff015bb1f201e0440e8a3da4c7f1cb3f119ef8`
- Retrieved: 2026-08-12T05:03:44.627Z
- Exported: 2026-08-25T03:06:26.567Z
- Document slug: `la-lac-43-xiii-7929`

### Source metadata

```json
{
  "jurisdiction": "US-LA",
  "part": "LAC 43:XIII",
  "section": "7929",
  "pipelineScope": "louisiana-pipeline-safety",
  "legalScope": "Louisiana Office of Conservation pipeline-safety rules governing covered transportation of gas, gas reporting, incorporated and modified federal gas-pipeline requirements, drug and alcohol testing, and LNG facilities.",
  "applicabilityCaveat": "Part XIII applies only within the scope of its certification or agreement, jurisdictional and facility limitations, and section-specific exclusions. Determine operator status, commodity, intrastate or interstate jurisdiction, coastal or Outer Continental Shelf location, gathering classification, LNG status, and federal preemption before applying a provision.",
  "incorporationCaveat": "Part XIII incorporates and modifies portions of 49 CFR Parts 40, 191, 192, 193, and 199. Bracketed federal citations identify the source provision, but Louisiana numbering and text control only within the state rule's scope; consult both current Louisiana and applicable federal text.",
  "historicalNote": "HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 44:1058 (June 2018).",
  "authorityNote": "AUTHORITY NOTE: Promulgated in accordance with R.S. 30:551.C.",
  "reserved": false,
  "references": [
    {
      "citation": "49 CFR 193.2629",
      "referenceType": "cfr",
      "url": "https://www.ecfr.gov/current/title-49/part-193"
    },
    {
      "citation": "LAC 43:XIII §192",
      "referenceType": "louisiana-administrative-code",
      "url": "https://www.doa.la.gov/doa/osr/louisiana-administrative-code/"
    }
  ],
  "sourceEdition": "December 2025",
  "artifactPath": "data/sources/louisiana/louisiana-lac-title-43-parts-ix-xi-xiii.docx",
  "artifactSha256": "568d6b8b3cc244c67a0c93c040442fa53a1bbdafcb688b253cfa707d84d64259",
  "publicationStatus": "Current state-certified Louisiana Administrative Code compilation; section-level effective dates are not inferred from compilation or monthly history citations.",
  "rights": "The Louisiana Administrative Code is the state-certified publication. Preserve Office of State Register attribution and review Louisiana website terms, agency marks, incorporated standards, and third-party material before redistribution.",
  "region": "LA"
}
```