# General specification applicable to cryogenic liquid tank car tanks.

**Citation:** 49 CFR 179.400  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated



## Document text



## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.400>
- Source ID: `ecfr`
- SHA-256: `dc3b5ab3af80c3dff74cb3bb4c92b63b87a5ff7e6ae415a802a579f7a510dbbc`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-22T20:10:01.533Z
- Document slug: `49-cfr-179-400`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.400",
  "subpart": "Subpart F—Specification for Cryogenic Liquid Tank Car Tanks and Seamless Steel Tanks (Classes DOT-113 and 107A)",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```