Last year we had a fire where a water line was fractured by the impact of the explosion and there was a very large leak so all the pumps went into operation.
It is a very special case but it was proven that this is likely to happen.
Fire pumps operate in sequence according to system pressure.
Three are powered with electric motor and 2 with diesel engine.
I consider that the diameter of the head is very small to operate with that arrangement and that they should discharge individually.
A schematic drawing of the arrangement...
An 8 "diameter discharge head was installed in which the outputs of the pressure relief valves of 5 fire pumps were connected.
One of them is 1000 gpm capacity and the others are 2500 gpm.
Is this arrangement acceptable?
