• Omission of Releasing Panels of Fire Suppression Systems within Buildings protected with a Main Fire Alarm Panel

    For new installations: kindly advise if the main fire alarm panel  protecting a building can be utilized to release and monitor the fire suppression system within the same building (does NFPA 2001 allow this?), o...
    last modified by yasminemroweh
  • kitchen wet chemical system

    We need to install a Kidde wet chemical system in our kitchen. Unfortunately, the supplier who provided the necessary support is no longer in the market. We are totally new to the system. It's a small system with one ...
    last modified by ananthars90
  • Air Pear System Shut Down?

    Requesting information about potential problems with fire suppression systems and the use of  Air Pear systems installed in large open buildings. I feel that the destratification could cause a delay in ...
    created by stephen.rinaldi
  • Should a class K extinguisher be placed in a domestic kitchen within a dwelling?

    Have a dwelling that only has a class K extinguisher within its kitchen. Is this acceptable?
    last modified by mrichter
  • Sprinkler water storage tank - include hose stream allowances, or not?

    A golf course clubhouse building is currently sprinkler protected.  The building is remote from any municipal water service and is served domestically by a small well.  The building fire sprinkler system der...
    last modified by joseph.keller
  • Sprinkler Valves in Fire Pump Room

    Does NFPA 20-2016 allow for backflow preventers and sprinkler valves for both wet and dry sprinkler systems to be installed in the fire pump room as "related components"? The exemption in Section 4.13....
    last modified by jierardi
  • Pump Acceptance limit by NFPA 20

    As per NFPA 20, it stataes that  " Field Retest Results. The field retest results shall be compared to the original pump performance as indicated by the fire pump manufacturer’s origina...
    last modified by abircuet2010
  • DPSA

    Dear Engineers, What is the best fire suppression solution between IG55 (ARGONITE) or DPSA for electrical room .     cdt,
    created by yassin.promep
  • Less Efficiency Fire Pump in when it run with 150%

    I have tested my ul listed diesel fire pump which is rated at 100% flow :pressure 152 psi  and at 150% flow: pressure 135 psi.  But during my testing i got 152 psi when it run with 100% flow. But at 150%, th...
    Md Kamrul Hasan Chowdhury
    last modified by Md Kamrul Hasan Chowdhury
  • water tank capacity for sprinkler system

    Hi! I would appreciate your help with the interpretation of the following: On NFPA 13 (2019), paragraph states that "the minimum water supply shall be available for the minimum duration specified in Chapter 1...
    last modified by lizettelalli
  • Question regarding inspection of portable fire extinguisher

    Hi All, Hope you are doing well. My name is Kamil Lagiewka and I am working as 2nd Officer, in possession of Chief Officer’s license,  with experience on LNG and LPG vessels. I was involved in many fire dri...
    last modified by kamil.lagiewka
  • Dry System Hydro with Nitrogen

    Can I hydro a dry system with nitrogen to 200 psi?
    last modified by jsamia
  • Fire Pump Pressure setting

    we have a diesel and electric pump operating in auto mode. As per NFPA 20, the pressure setting for the pump shall be churn pressure+ static pressure. while doing the actual performance test, the churn pressure( zer...
    last modified by ananthars90

    Hello. The question I have is where in NFPA does it say that if you exceed a certain ceiling height you are to use type "xyz" sprinkler heads. Storage height is minimal, 12' at the most. lets just say for talking purp...
    last modified by rbjorkman

    Dear NFPA Community   My client has 9 fire pumps because the higher water requirement is 4900 gpm. The capacity for each pump is:   a) Two Jockey Pumps (Q: 100 gpm) b) Five Electric Motor Pump...
    last modified by diogofse24@hotmail.com
  • Fire Protection for High-Rise Buildings (The Questions)

    1 )   I have questions about calculation design of sprinkler systems and fire hose connections for high-rise buildings. Due to the design of fire protection systems of high-rise buildings, the design must be...
    last modified by thanomsak.c
  • Sprinkler Riser is allow in floor or not

    In NPFA floor separation is main fact for Sprinkler riser. Another one major issue is test  and drain valve is allow in floor to floor separation issue. Please give me with reference from NFPA 13 OR 14.  in ...
  • FLOW

    Dear NFPA Community
    last modified by diogofse24@hotmail.com
  • Fire Protection For Vertical Tank With Small Diameter

    On one of my project Client is asking for foam chamber protection for vertical storage tank (storing chemical) of 4m dia and 10m length. Calculating as per NFPA 11 the flow requirement of foam solution = 8.2 gpm. Norm...
    last modified by abdulrafay80
  • Fire water tank filling

    Fire water tank filling in 8 hour . Can we avoid this somehow?
    last modified by eldainstal