How and when fire pumps should be tested:

• Fire pumps should be tested regularly (e.g. weekly/ monthly) to confirm they operate correctly and deliver the required pressure and flow. They are tested by running the pump and checking the discharge pressure, flow, and that the pump starts/ stops correctly.
• The pumps are also tested during drills and at survey.
• The fire main is tested by running the fire pumps and checking the pressure at the hydrants/ nozzles.

SOLAS 74 (as amended) requirements:

• The fire pumps must be capable of delivering the required quantity of water at the required pressure (the fire main pressure must be maintained at the hydrants).
• The number and capacity of fire pumps are specified (e.g. at least two fire pumps, each capable of delivering the required flow; the total capacity must meet the requirements).
• The fire pumps must be capable of being started and operated independently.
• The fire main must be maintained at the required pressure, and the pumps must be able to deliver the required flow at the required pressure.
• Emergency fire pump (if fitted) must be capable of delivering the required flow and pressure and be operable independently.

• Fire hydrants, valves, hoses and nozzles are inspected and maintained regularly: check for leaks, corrosion, damage and correct operation.
• The fire main is tested at the required pressure (e.g. the working pressure, or as per the maker/ Class - typically the fire main is tested to the working pressure, and the system is pressure-tested at survey).
• Hoses are inspected for damage/ deterioration and pressure-tested periodically.
• The fire pump is tested for pressure and flow.
• The international shore connection and the fire main isolating valves are checked.

• Dismantling: Isolate the pump, drain it, remove the coupling/ drive, and dismantle the pump (remove the casing, impeller, shaft, bearings, seals, wear rings). Clean and inspect each part.
• Factors deciding replacement of parts:
• Impeller: worn, eroded, corroded, or damaged (cracked/ broken) - replace if the wear/ damage affects performance.
• Shaft: worn, scored, bent, or corroded - replace if damaged.
• Bearings: worn, pitted, or damaged - replace if the clearance/ condition is beyond limits.
• Seals/ packing: worn, leaking - replace.
• Wear rings: worn beyond the clearance limit - replace.
• Casing: corroded, cracked, or wasted - repair or replace.
• The decision is based on the measured wear/ damage against the maker's limits and the effect on the pump's performance and reliability.