# Specification requirements for IM 101 and IM 102 steel portable tanks.

**Citation:** 49 CFR 178.270-1  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2005-10-01  
**Published:** Not stated

(a) Each IM portable tank must meet the requirements of this section in addition to the requirements of § 178.271 (IM 101) or § 178.272 (IM 102). These requirements apply to IM portable tanks of diameters no greater than 2438 mm (96 inches) that are designed to carry liquids having a vapor pressure 

## Document text

(a) Each IM portable tank must meet the requirements of this section in addition to the requirements of § 178.271 (IM 101) or § 178.272 (IM 102). These requirements apply to IM portable tanks of diameters no greater than 2438 mm (96 inches) that are designed to carry liquids having a vapor pressure of less than 2.97 bar-absolute (43 psia) at a temperature of 50 °C (122 °F).

(b) [Reserved]

[Amdt. 178-65, 46 FR 9895, Jan. 29, 1981]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2005-title49-vol2/CFR-2005-title49-vol2-sec178-270-1>
- Source ID: `govinfo-cfr`
- SHA-256: `a44de211eda4edd3ef03878510f79c51cf7f5be620512872b95a3a15a5b50d7e`
- Retrieved: 2026-08-13T06:37:34.028Z
- Exported: 2026-08-22T05:32:12.110Z
- Document slug: `49-cfr-178-270-1`

### Source metadata

```json
{
  "part": "178",
  "section": "178.270-1",
  "subpart": "Subpart H—Specifications for Portable Tanks",
  "annualEdition": 2005,
  "revisedAsOf": "2005-10-01",
  "govInfoPackage": "CFR-2005-title49-vol2",
  "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"
}
```