CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER T—SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) (parts 175 to 186) > PART 181—FIRE PROTECTION EQUIPMENT > SUBPART D—Fixed Fire Extinguishing and Detecting Systems (§181.400 to §181.450) > 181.420—Pre-engineered fixed gas fire extinguishing systems.

181.420—Pre-engineered fixed gas fire extinguishing systems.

(a) A pre-engineered fixed gas fire extinguishing system must:
(1) Be approved by the Commandant;
(2) Be capable of manual actuation from outside the space in addition to automatic actuation by a heat detector;
(3) Automatically shut down all power ventilation systems and all engines that draw intake air from within the protected space; and
(4) Be installed in accordance with the manufacturer's instructions.
(b) A vessel on which a pre-engineered fixed gas fire extinguishing system is installed must have the following equipment at the operating station:
(1) A light to indicate discharge;
(2) An audible alarm that sounds upon discharge; and
(3) A means to reset devices used to automatically shut down ventilation systems and engines as required by paragraph (a)(3) of this section.
(c) Only one pre-engineered fixed gas fire extinguishing system is allowed to be installed in each space protected by such a system.