With reference to an emergency fire pump, state the regulations, power supply, relief valve necessity, and isolation valve requirements?
Short answer
- Regulations: SOLAS II-2/10, FSS Code ch-12, SOLAS II-1/39 and /42, IACS UI SC121/SC245/SC163
- Location: Emergency fire pump, its seawater inlet, suction and delivery pipes and isolating valves shall be located outside the machinery space; space containing the pump shall not be contiguous to category A machinery spaces or main fire pump spaces
- Capacity: Not less than 40% of total fire pump capacity, and in any case not less than 25 m³/h for cargo ships of 2000 GT and upwards, 15 m³/h for cargo ships less than 2000 GT; where supplying a fixed water-based fire-extinguishing system for machinery space protection, capacity must be adequate for that system plus two jets of water, each jet not less than 25 m³/h
- Pressure: Minimum pressure at any hydrant per SOLAS II-2; minimum pressure referred to in FSS Code ch-12 §2.2.1.2 is 0.27 N/mm²
Full answer
The full answer explains each point step by step, with the regulations and figures behind it and the discussion from other candidates. It is in the ETO section of the Marine One forum, open to members enrolled for the ETO exam.