# Gas leak detection.

- **operation:** document
- **citation:** 49 CFR 193.2169
- **title:** Gas leak detection.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** Not available
- **effective on:** 1999-10-01
- **summary:** Appropriate areas within an impounding system where collection or passage of LNG or LNG vapor could be expected must be equipped with sensing and warning devices to monitor continuously for the presence of LNG or LNG vapor and to warn before LNG gas concentration levels exceed 25 percent of the lowe
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-193-2169.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-193-2169.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-193-2169
- **source url:** https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2169
**body:**

Appropriate areas within an impounding system where collection or passage of LNG or LNG vapor could be expected must be equipped with sensing and warning devices to monitor continuously for the presence of LNG or LNG vapor and to warn before LNG gas concentration levels exceed 25 percent of the lower flammable limit.
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- **body characters:** 318