# -7 Jackets.

**Citation:** 49 CFR 179.202-7  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

The entire thermal protection system must be covered with a metal jacket of a thickness not less than 11 gauge A1011 steel or equivalent; and flashed around all openings so as to be weather tight. A protective coating must be applied to the exterior surface of a carbon steel tank and the inside surf

## Document text

The entire thermal protection system must be covered with a metal jacket of a thickness not less than 11 gauge A1011 steel or equivalent; and flashed around all openings so as to be weather tight. A protective coating must be applied to the exterior surface of a carbon steel tank and the inside surface of a carbon steel jacket.

[80 FR 26749, May 8, 2015]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.202-7>
- Source ID: `ecfr`
- SHA-256: `240a613d0c51d9220cd41eb9bae13c6047e4f9c00820d25e2e6f8c4f28f5a088`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-24T04:54:44.462Z
- Document slug: `49-cfr-179-202-7`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.202-7",
  "subpart": "Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```