Section 167.45-30 - Use of approved fire-fighting equipment(a) Portable fire extinguishers or fire-extinguishing systems which conform to the specifications of the Navy or Coast Guard, or their approved equivalent, may be accepted for use on nautical school ships.(b) Use of non-approved fire detection systems may be acceptable as excess equipment provided that: (1) Components are listed by an independent, nationally recognized testing laboratory as set forth in 29 CFR 1910.7 , and are designed, installed, tested, and maintained in accordance with an appropriate industry standard and the manufacturer's specific guidance;(2) Installation conforms to the requirements of 46 CFR chapter I, subchapter J (Electrical Engineering), especially the hazardous location electrical installation regulations in 46 CFR 111.105 ; and(3) Coast Guard plan review is completed for wiring plans.CGFR 51-11, 16 FR 3218, Apr. 12, 1951, as amended by USCG-2012-0196, 81 FR 48294 , July 22, 2016