# Cooldown [49 CFR 193.2505]

- **operation:** document
- **citation:** LAC 43:XIII §7705
- **title:** Cooldown [49 CFR 193.2505]
- **source type:** regulation
- **agency:** Louisiana Office of Conservation
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** Not available
- **summary:** A. The cooldown of each system of components that is subjected to cryogenic temperatures must be limited to a rate and distribution pattern that keeps thermal stresses within design limits during the cooldown period, paying particular attention to the performance of expansion and contraction devices
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- **source url:** https://www.doa.la.gov/doa/osr/louisiana-administrative-code/
**body:**

A. The cooldown of each system of components that is subjected to cryogenic temperatures must be limited to a rate and distribution pattern that keeps thermal stresses within design limits during the cooldown period, paying particular attention to the performance of expansion and contraction devices. [49 CFR 193.2505(a)]

B. After cooldown stabilization is reached, cryogenic piping systems must be checked for leaks in areas of flanges, valves, and seals. [49 CFR 193.2505(b)]

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:551.C.

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 44:1053 (June 2018).
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