Greetings!
I am an expert in Hydraulic Calculation for fire fighting system.
For pump selection, we need flow rate and head. Flow rate can be calculated by using standard flow as required for a specified time and head can be calculation by taking, friction, static and residual pressures for the pump.
Tank capacity can be calculated accordingly.
I have done similar work for other clients in the past.
Please, drop a message to discuss and finalize the deal.
With best wishes
Hayat Khan