Section 130.470 - Fire alarms(a) Each fire detector and control unit must be of a type specifically approved by the Commandant (CG-ENG).(b) No fire-alarm circuit for the engine room may contain a fire detector for any other space.(c) The number and placement of fire detectors must be approved by the cognizant OCMI.CGD 82-004 and CGD 86-074, 62 FR 49337, Sept. 19, 1997, as amended by USCG-2009-0702, 74 FR 49235, Sept. 25, 2009; USCG-2012-0832, 77 FR 59782, Oct. 1, 2012