The term cargo handling room means any enclosed space where cargo is pumped, compressed, or processed. Examples of cargo handling rooms are pump rooms, compressor rooms, and cargo valve rooms. [CGFR 68-65, 33 FR 19983, Dec. 28, 1968] Sec. 30.10-6a Category A machinery space--TB/ALL.
The term Category A machinery space means any space and trunks and ducts to such a space that contains:
(a) Internal combustion machinery used for main propulsion;
(b) Internal combustion machinery used for purposes other than main propulsion where the total aggregate power is at least 500 brake horsepower;
(c) Internal combustion machinery that uses a fuel that has a flash point of less than 43.3C (110F); or
(d) One or more oil fired boilers or oil fuel units. [CGD 74-127, 41 FR 3842, Jan. 26, 1976]