View all text of Subpart F [§ 193.2501 - § 193.2521]
§ 193.2517 - Purging.
When necessary for safety, components that could accumulate significant amounts of combustible mixtures must be purged in accordance with a procedure which meets the provisions of the “Purging Principles and Practices (incorporated by reference, see § 193.2013)” after being taken out of service and before being returned to service.