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;

(d) One or more oil fired boilers or oil fuel units.

Code of Federal Regulations

[CGD 74-127, 41 FR 3842, Jan. 26, 1976]