SYSTEM OPERATION IN THE EVENT OF A FIRE

    • The jockey pump automatically keeps the fire water system pressurized at 1230 Kpa at all times both water and foam mains are pressurized with water fed from the jockey pump
    • All valves except the remotely controlled inbal valves in the foam and water ring mains aroundthe tank farm are normally open
    • All application valves delivering water and foam from the ring mains into the tank farm are normally closed
    • Water and foam pump suction and discharge valves are normally open
    • The following valves must be remotely opened from the fire control panel in the control room forthe bund area and the specific tank where foam is required for fire fighting:
    • 1. Foam valve for bund foam supply for fighting bund fire
    • 2. Foam valve for tank foam supply for fighting tank fire
    • 3. The water valves for tank exposure protection (cooling) must be opened remotely /manually fortanks adjacent to the tank fire and all tanks in bund in case of a bund fire
    • A pressure switch on the discharge manifold in the pump house will start water pumps whenwater main loses pressure and jockey pumps cannot sustain full pressure anymore.
    • The activation of the foam bund protection or the top foam pourer control valves will relay asignal to the foam pump control panel to start the foam pumps and open the control valveallowing water to flow into the foam proportioning system.
    • The Water Oscillating Monitors are used for additional tank cooling.
    • This procedure can be followed for any tank / bund fire scenario