Section 162.161-1 - Scope(a) This subpart applies to each engineered fixed fire extinguishing system using a halocarbon or an inert gas as an agent. It does not apply to pre-engineered systems.(b) Each system must be designed for protection against fires in both Class B flammable liquids and Class C energized electrical equipment, as those hazard classes are defined in NFPA 2001 (incorporated by reference, see § 162.161-2 ).(c) Each system must meet the requirements of this subpart, be listed or approved by an independent laboratory approved by the Coast Guard and listed at http://cgmix.uscg.mil/, bear the mark of the laboratory, and be approved by the Coast Guard under 46 CFR 159.005-13 .