# Smoking or open flame and posting of warning signs.

**Citation:** 49 CFR 176.325  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) Smoking or the use of open flame is prohibited in any hold or compartment containing a Class 3 (flammable) or combustible liquid, near any Class 3 (flammable) or combustible liquid stowed on deck, or near any ventilator leading to a hold containing such material.

(b) A sign carrying the legend:

## Document text

(a) Smoking or the use of open flame is prohibited in any hold or compartment containing a Class 3 (flammable) or combustible liquid, near any Class 3 (flammable) or combustible liquid stowed on deck, or near any ventilator leading to a hold containing such material.

(b) A sign carrying the legend:

FLAMMABLE VAPORS KEEP LIGHTS AND FIRE AWAY NO SMOKING

must be conspicuously posted at each approach to a Class 3 (flammable) or combustible liquid stowed “on deck” and near each cargo hold ventilator leading to a hold or compartment containing this material. This sign must be painted on a white background using red letters. The letters may not be less than 8 cm (3 inches) high.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-176.325>
- Source ID: `ecfr`
- SHA-256: `0d9e2e7d297521ffe08f5757593da00dc759d74638f6de1aff2fb17c5d409b4d`
- Retrieved: 2026-08-20T05:46:14.489Z
- Exported: 2026-08-23T08:09:48.005Z
- Document slug: `49-cfr-176-325`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "176",
  "section": "176.325",
  "subpart": "Subpart I—Detailed Requirements for Class 3 (Flammable) and Combustible Liquid Materials",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```