# Structural Requirements \[49 CFR 193.2155\]

**Citation:** LAC 43:XIII §7155  
**Type / status:** regulation / current  
**Agency:** Louisiana Office of Conservation  
**Effective:** Not stated  
**Published:** Not stated

A. The structural members of an impoundment system must be designed and constructed to prevent impairment of the system's performance reliability and structural integrity as a result of the following: 1. the imposed loading from: a. full hydrostatic head of impounded LNG; [49 CFR 193.2155(a)(1)(i)] 

## Document text

A. The structural members of an impoundment system must be designed and constructed to prevent impairment of the system's performance reliability and structural integrity as a result of the following:

1. the imposed loading from:

a. full hydrostatic head of impounded LNG; [49 CFR 193.2155(a)(1)(i)]

b. hydrodynamic action, including the effect of any material injected into the system for spill control; [49 CFR 193.2155(a)(1)(ii)]

c. the impingement of the trajectory of an LNG jet discharged at any predictable angle; and [49 CFR 193.2155(a)(1)(iii)]

d. anticipated hydraulic forces from a credible opening in the component or item served, assuming that the discharge pressure equals design pressure; [49 CFR 193.2155(a)(1)(iv)]

2. the erosive action from a spill, including jetting of spilling LNG, and any other anticipated erosive action including surface water runoff, ice formation, dislodgement of ice formation, and snow removal; [49 CFR 193.2155(a)(2)]

3. the effect of the temperature, any thermal gradient, and any other anticipated degradation resulting from sudden or localized contact with LNG; [49 CFR 193.2155(a)(3)]

4. exposure to fire from impounded LNG or from sources other than impounded LNG; [49 CFR 193.2155(a)(4)]

5. if applicable, the potential impact and loading on the dike due to:

a. of the component or item served or adjacent components; and [49 CFR 193.2155(a)(5)(i)]

b. the LNG facility adjoins the right-of-way of any highway or railroad, collision by or explosion of a train, tank car, or tank truck that could reasonably be expected to cause the most severe loading. [49 CFR 193.2155(a)(b)(ii)]

B. An LNG storage tank must not be located within a horizontal distance of one mile (1.6 km) from the ends, or 1/4 mile (0.4 km) from the nearest point of a runway, whichever is longer. The height of LNG structures in the vicinity of an airport must also comply with Federal Aviation Administration requirements in 14 CFR Section 1.1. [49 CFR 193.2155(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 44:1051 (June 2018).

## Provenance

- Official: Yes
- Source: <https://www.doa.la.gov/doa/osr/louisiana-administrative-code/>
- Source ID: `la-osr-lac`
- SHA-256: `d9c2b462ee3dbbf201a3924417317276c5121c7059b8b90a33781161d7ad91a3`
- Retrieved: 2026-08-12T05:03:44.627Z
- Exported: 2026-08-25T08:03:10.233Z
- Document slug: `la-lac-43-xiii-7155`

### Source metadata

```json
{
  "jurisdiction": "US-LA",
  "part": "LAC 43:XIII",
  "section": "7155",
  "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 44:1051 (June 2018).",
  "authorityNote": "AUTHORITY NOTE: Promulgated in accordance with R.S. 30:551.C.",
  "reserved": false,
  "references": [
    {
      "citation": "49 CFR 193.2155",
      "referenceType": "cfr",
      "url": "https://www.ecfr.gov/current/title-49/part-193"
    }
  ],
  "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"
}
```