# -14 Cleaning of inner tank.

**Citation:** 49 CFR 179.400-14  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

The interior of the inner tank and all connecting lines must be thoroughly cleaned and dried prior to use. Proper precautions must be taken to avoid contamination of the system after cleaning.

## Document text

The interior of the inner tank and all connecting lines must be thoroughly cleaned and dried prior to use. Proper precautions must be taken to avoid contamination of the system after cleaning.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.400-14>
- Source ID: `ecfr`
- SHA-256: `37ed8f83ac992bbf022be7e8f73e18ef4ff7f860c75a11592f77be8952bd4c29`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-23T12:49:45.744Z
- Document slug: `49-cfr-179-400-14`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.400-14",
  "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"
}
```