Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Alireza01

    Multi-Stage Single-Outlet fire Pump

    Is it permissible to have a Multi-Stage Single-Outlet fire Pump according to NFPA 20?
  2. Alireza01

    Variable Speed Fire Pumps

    We have designed the sprinkler system for a warehouse with 1400 GPM at 123 psi water demand. So due to High fire pump capacity, (Regarding NFPA) Is it permissible to have a variable speed drive for the fire pump? Because if only a limited number of sprinklers are activated, the large pump will...
  3. Alireza01

    Fire Pump flow rate

    Thank you! I quite agree with that. The water supply (tank and fire pump set) should be such that to supply sprinkler and standpipe water demand at the required pressure and also fire flow at residual 20 psi pressure. Is there any difference between the outside hose definition and the hydrants...
  4. Alireza01

    Fire Pump flow rate

    Thank you! But I think paragraph 18.3.1 of NFPA 1 (2018) expands this subject because we don't have any municipal water supply system and we use a pre-filled water tank, So I think we can consider NFPA 1 method for Pump and tank sizing. as a result, it meets the NFPA 13 requirement also ( I...
  5. Alireza01

    Fire Pump flow rate

    Hi, I think two methods are mentioned in NFPA codes to determine fire pump capacity and ground-level water tank volume in an industrial site with some sprinklered and unsprinklered buildings and some hydrants in the yard. the first method is based on chapter 18 NFPA 1, "Minimum Required Fire...
  6. Alireza01

    Does NFPA 13 address unpackaged bulk storage such as piled grain warehouse?

    Thank you for your replies. I have some uncertainties about sprinkler system consideration for high roof piled grain warehouses. 1- Since the combustible contents of the warehouse are not integrated solid substances (particulate solid) and possible fire is a surface fire, So I think spraying...
  7. Alireza01

    Does NFPA 13 address unpackaged bulk storage such as piled grain warehouse?

    Hi I didn't find any regulation about automatic fire protection system design for unpackaged bulk storage such as piled grain warehouse. Is it effective to install sprinkler system for such these warehouses? Is there any criteria for such system design (like NFPA 13)?
  8. Alireza01

    welding a 2.5" pipe to 6" pipe without fittings

    yes, I mean asme b31.1. & also cold water run in the pipe. thank you.
  9. Alireza01

    welding a 2.5" pipe to 6" pipe without fittings

    Does it comply with ASME B36.1 to weld a 2.5" pipe to a 6" main pipe through making hole on the main pipe and welding the other pipe in the T form? both pipes are seamless sch 40 and water pressure is 100 psi.
  10. Alireza01

    water mist & pulverized water fire extinguisher

    are water mist extinguisher & pulverized water fire extinguisher both same thing?
  11. Alireza01

    gaseous fire suppression cylinders placement.

    Is it any requirement that compel to place the gaseous fire suppression cylinders outside of the enclosure (where shouldbe suppressed)?
  12. Alireza01

    Class III Standpipe hydraulic calculations

    In accordance to chapter 7 Of NFPA 14,the pressure limitations for class II standpipe (1 1/2 in. outlet) are between 4.5~6.9 bar and fire pump sizing shall be done to achieve minimum residual pressure on the most remote standpipe. The minimum residual pressure for class I system is 6.9 bar also...
  13. Alireza01

    "Vibration Isolator, Flexible Joint" For fire pump

    Is That permissible To consider a flexible joint at fire pump's suction and discharge flanges in order to isolation of vibrations? such as rubber joints that placed for water booster pumps.
  14. Alireza01

    Pressure tank in fire booster pump

    Hi Is That permissible in nfpa 20, to have a pressure tank in addition to pressure maintenance (Jockey) Pump for compensating system leakages ?

Part and Inventory Search

Back
Top