46 CFR § 153.330 - Access.
(a) The access door to a cargo pump-room must open on the weatherdeck.
(b) The access way to a cargo pump-room and its valving must allow passage of a man wearing the breathing apparatus required by § 153.214(b)(1).
(c) Each ladderway in a cargo pump-room must be free from obstructions by piping, framework, or other equipment.
(d) Cargo pumproom ladders and platforms must have guard railings.
(e) Each ladder to a cargo pump-room must have an incline from the horizontal of less than 60°.