# -14 Openings in the tanks.

**Citation:** 49 CFR 179.220-14  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

Openings in the inner container and the outer shell must be reinforced in compliance with AAR Specifications for Tank Cars, appendix E (IBR, see § 171.7 of this subchapter). In determining the required reinforcement area for openings in the outer shell, t shall be one-fourth inch.

[68 FR 75763, Dec

## Document text

Openings in the inner container and the outer shell must be reinforced in compliance with AAR Specifications for Tank Cars, appendix E (IBR, see § 171.7 of this subchapter). In determining the required reinforcement area for openings in the outer shell, t shall be one-fourth inch.

[68 FR 75763, Dec. 31, 2003]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.220-14>
- Source ID: `ecfr`
- SHA-256: `b39d47df64dbe491aef65e43aae8a73a59eb32f493a4f2d0ae4e0e553c6a33ec`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-25T14:33:40.704Z
- Document slug: `49-cfr-179-220-14`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.220-14",
  "subpart": "Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```