Fixed Foam Fire Fighting System Test

The testing of the fixed foam firefighting system is done by testing its components one by one. The foam line needs to be pressure tested annually to the maximum working pressure. The details of the pressure test are given in the SMS manuals of the ship for any special testing requirements. Testing procedure for the fire line
• Close all the valves on the fire and foam line
• Open the foam monitor on the forward-most part of the ship
• Start the fire pump at the maximum rated pressure
• Close the foam-monitor that was kept open at the forepart. l Marine Insight
• Check for any leakages in the line
• Check for leakage in foam monitor valve
• If the leakage is detected from foam monitor valve, check if it is properly shut. If the valve is still leaking, overhaul the same Testing foam isolation valves
• Open foam monitor at the forepart of the ship Only the approved type of foam stock solution which is compatible with the cargo should be provided. For other cargo ineffective or incompatible with the foam, additional firefighting arrangement should be provided to the satisfaction of competent authorities Cargo Operations for Tanker I 178.

• Close the foam isolation valve one by one and check if the water from the foam monitor stops completely Testing Foam pump The foam pump is usually tested during fire drill involving fire on deck. The foam pump is run on recirculation and the pump performance is measured for its rated capacity. Testing Foam concentrate The foam is generated using foam concentrate stored in the foam tank. Following things are to be checked
• The quantity of the foam concentrates present in the tank
179. l Marine Insight
• Ensure the level of foam concentrate is never below the mark
• The physical appearance of the foam concentrate
• For the vessels fitted with the inert gas system, sufficient foam concentrate should be stored onboard for running the system for 20 minutes at a maximum flow rate
• Where there is no inert gas system fitted, sufficient foam concentrate should be stored onboard for running the system for 30 minutes at a maximum flow rate
• Analysis of the sample to be performed at regular intervals of time Cargo Operations for Tanker I 180.

Testing Fire pump Fire pump is an important part of the foam system, and it is tested during the fire drill by checking the rated pressure of the pump
181. l Marine Insight Mooring winches and windlasses on ships are required to be tested for brake holding capacity, every year, during dry dock, or whenever the brake liners have been replaced. The brake holding capacity testis done to determine if the winch brakes is rendering the required force to hold the ropes or wires tightly.

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