what is the maximum capacity of individual fire water pump in a a stationary pump station? what is the risk to have a capacity above?
Whatever it is designed to.
OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math.
Stationery Fire pumps, while they are designed to pump at 150% nominal capacity, shouldn't be selected to supply a system's water demand above 140% nominal capacity. Currently stationery fire pump nominal capacities have a range between 250 GPM up to 5,000 GPM.
The single greatest fire demand should not exceed 150% of the pump rated capacity. Listed pumps are available up to 5000 gpm. Pumps rated over 5000 gpm are subject to approval of the AHJ. The main disadvantage of using a pump larger than needed is that piping and the driver will be excessively large and associated costs will be increased. Adequate water supply storage can be affected. Oversizing is wasteful of funds and resources.
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