The Office of Design and Engineering Standards (CG-ENG) has issued Policy Letter 02-23, USCG Acceptance of IMO Guidelines for Hydrostatic Testing of Carbon Dioxide Cylinders Associated with Fixed Gas Fire Extinguishing Systems. The policy letter responds to inquiries from ship owners and field personnel regarding the efficacy of International Maritime Organization (IMO) MSC.1/Circ. 1318/Rev.1, Revised Guidelines for the Maintenance, and Inspections of Fixed Carbon Dioxide Fire-Extinguishing Systems (25 May 2021) in accomplishing the goals of 46 Code of Federal Regulations (CFR) § 147.65, Carbon dioxide and Halon fire extinguishing systems, and National Fire Protection Association (NFPA) 12, Standard on Carbon Dioxide Extinguishing Systems, 2022 Edition.
A complete list of ENG Policy Letters can be found at the following link. https://www.dco.uscg.mil/ENG/Policy/
For any questions, please contact CGENG@uscg.mil.