# Regulus search export

- Query: `46 FR 9897`
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- Exported: 2026-08-23T21:51:02.797Z

## 1. Pressure and vacuum relief devices.

**Citation:** 49 CFR 178.270-11  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective / published:** 2005-10-01 / Not stated

(a) Relief devices required. Each portable tank, or each independent compartment of a portable tank, must be fitted with pressure relief devices in accordance with the following: (1) Each portable tank, or each independent compartment of a portable tank, with a capacity of more than 1893 L (500 gal

### Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2005-title49-vol2/CFR-2005-title49-vol2-sec178-270-11>
- Source ID: `govinfo-cfr`
- SHA-256: `b28e5764462d24f32b62fa34ac2916b84c3c66da33efa04ec0ff04a2a877c1e7`
- Retrieved: 2026-08-13T06:37:34.028Z
- Document slug: `49-cfr-178-270-11`
- Related records: 0