# Dimensions.

**Citation:** 49 CFR 178.360-3  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2013-10-01  
**Published:** Not stated

(a) The inside diameter of the vessel may not exceed 30 cm (12 inches) exclusive of flanges for handling or fastening devices and must have wall thickness and length in accordance with the following:

Inside diameter maximum Inches Cm Threaded closure Inches Mm Wall thickness minimum—Flanged closure

## Document text

(a) The inside diameter of the vessel may not exceed 30 cm (12 inches) exclusive of flanges for handling or fastening devices and must have wall thickness and length in accordance with the following:

Inside diameter maximum Inches Cm Threaded closure Inches Mm Wall thickness minimum—Flanged closure Length maximum Inches Cm 2 5 3/32 2.5 Not less than that prescribed for schedule 40 pipe 16 41 6 15 1/8 3.2 72 183 12 30 1/4 6.5 72 183

(b) [Reserved]

[Amdt. 178-35, 39 FR 45245, Dec. 31, 1974. Redesignated by Amdt. 178-97, 55 FR 52716, Dec. 21, 1990; 66 FR 45387, Aug. 28, 2001]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2013-title49-vol3/CFR-2013-title49-vol3-sec178-360-3>
- Source ID: `govinfo-cfr`
- SHA-256: `45ae2842785355074c9d09453ef778e687dd54d05a6d2c50b3e4bfd84930fc87`
- Retrieved: 2026-08-12T01:41:52.959Z
- Exported: 2026-08-22T16:56:41.107Z
- Document slug: `49-cfr-178-360-3`

### Source metadata

```json
{
  "part": "178",
  "section": "178.360-3",
  "subpart": "Subpart K—Specifications for Packagings for Class 7 (Radioactive) Materials",
  "annualEdition": 2013,
  "revisedAsOf": "2013-10-01",
  "govInfoPackage": "CFR-2013-title49-vol3",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```