# Smoking or open flame and posting of warning signs.

- **operation:** document
- **citation:** 49 CFR 176.325
- **title:** Smoking or open flame and posting of warning signs.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (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:
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-176-325.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-176-325.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-176-325
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-176.325
**body:**

(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.
- **truncated:** false
- **body characters:** 683