49 CFR § 193.2517 - Purging.

---
identifier: "/us/cfr/t49/s193.2517"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 193.2517 - Purging."
title_number: 49
title_name: "Transportation"
section_number: "193.2517"
section_name: "Purging."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "193"
part_name: "LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 5103, 60102, 60103, 60104, 60108, 60109, 60110, 60113, 60118; and 49 CFR 1.53."
regulatory_source: "45 FR 9203, Feb. 11, 1980, unless otherwise noted."
cfr_part: "193"
---


# 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.

[Amdt. 193-2, 45 FR 70405, Oct. 23, 1980, as amended by Amdt. 193-25, 80 FR 183, Jan. 5, 2015]