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  • Users: GeorgeMech
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  1. GeorgeMech

    NFPA 20 Check Valves in Sensing Line

    Guys, Any reason why NFPA requires 2 check valve in the pressure sensing line and why is it require to be separated by 1.50meters. Thanks!
  2. GeorgeMech

    Flexible Coupling

    Hi! I have a situation where the consultant requires the system to be provided with flexible joint whenever the pipes are passing through building expansion joint, however, our building does not belong to a category that requires seismic protection, however, the consultant insist that we need...
  3. GeorgeMech

    Pressure of the system in Churn Pressure Condition.

    Hi, I have a simple problem but I don’t know if I'm using the correct formula or procedure. I have a fire pump rated at 14 bar with a churn pressure of 16 bar, the consultant wants to give the pressure at each tapping point for each building (16 buildings in site), the piping runs straight from...
  4. GeorgeMech

    Closed Piping

    Hi, I have a simple problem but I don’t know if I'm using the correct formula or procedure. I have a fire pump rated at 14 bar with a churn pressure of 16 bar, the consultant wants to give the pressure at each tapping point for each building (16 buildings in site), the piping runs straight from...
  5. GeorgeMech

    NFPA 11 and 16 (foam System)

    I have a project (fuel storage for genset application,139 m2) that requires foam system, In this project I used the deluge system, foam-Bladder type, air aspirating system, design is 6.5 li/min/m2. but after submitting the design the consultant commented that the density should be 10.2 li./m/m2...
  6. GeorgeMech

    Jockey Pump Sizing

    Other than the method of taking the 1% flow capacity of fire pump to calculate the jockey pump pressure capacity, is there any calculation method on how to size its pressure capacity. Also, what method should I used in order to size the flow capacity of the Jockey pump.thanks

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