# Prevention of accidental ignition.

- **operation:** document
- **citation:** 49 CFR 192.751
- **title:** Prevention of accidental ignition.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** Each operator shall take steps to minimize the danger of accidental ignition of gas in any structure or area where the presence of gas constitutes a hazard of fire or explosion, including the following:

(a) When a hazardous amount of gas is being vented into open air, each potential source of ignit
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-192-751.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-192-751.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-192-751
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-192.751
**body:**

Each operator shall take steps to minimize the danger of accidental ignition of gas in any structure or area where the presence of gas constitutes a hazard of fire or explosion, including the following:

(a) When a hazardous amount of gas is being vented into open air, each potential source of ignition must be removed from the area and a fire extinguisher must be provided.

(b) Gas or electric welding or cutting may not be performed on pipe or on pipe components that contain a combustible mixture of gas and air in the area of work.

(c) Post warning signs, where appropriate.
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- **body characters:** 581