• Factor K for Sprinkler foam-water System

    Hello I would like your opinion about this case please.     According NFPA 13 2019 9.4.4 Sprinklers shall be with minimun nominal K factors of K=5.6.   According NFPA 16 2019 7.6.1 Sprinkler...
    mignot
    last modified by mignot
  • Fire extinguishers in Li-ion facility

    According to NFPA 855 standard what kind of fire extinguisher should I recommend for the facililty where Li-ion batteries, modules and ESS are mounted and stored? 
    rporowski
    created by rporowski
  • Sprinkler Protection in Juice & Milk Factory

    I am designing fire protection system for Juice and Milk factory. I want to know that for the following location do we have to provide sprinkler protection.   1) Syrup Mixing Area. 2) Filling area for Milk and ...
    abdulrafay80
    created by abdulrafay80
  • Rules for different brand sprinkler heads in same space?

      Thoughts on a tenant space change, contractor wants to use a comparable head but a different manufacturer.  I've heard many opinions but never found anything in writing? 
    cevrard
    last modified by cevrard
  • NFPA 20, DISCHARGE OF PRESSURE RELIEF VALVES

    Hi, my name is Diego Sandoval and I am designing and FIRE FIGHTING SYSTEM.   I have a question related to NFPA 20. I want to know if I can return the relieves towards suction lines in FIRE PUMPS WITH DIESEL ENGI...
  • nfpa 17 11.5.1

    Working on a  airplane deicing vehicle. Would this reference  give my nitrogen bottles a 12year hydro interval? They are Dot 3AA bottles, would this supersede the normal 5 or ten year Dot requirement? Vehicl...
    alan.mccaughrean
    last modified by alan.mccaughrean
  • NFPA 291 Calculating Rated Capacity at 20 psi

    Hi, I am new to the NFPA 291 code. Please I need some clarification on the fomula for discharge at specified residual pressure /calculating rated capacity at 20 psi (i.e. 4.10.1.2)   For instance: static = 100ps...
    tunde.sebastian@corix.com
    last modified by tunde.sebastian@corix.com
  • To calculate the storage tank volume ...

    Hello To calculate the storage tank volume , Should water for the number of active sprinklers be collected with water for active fireboxes?  for 5-storey apartment If yes :  According to which part of NFP...
    babak.ha1989
    last modified by babak.ha1989
  • Foam chamber in geodesic dome tank roof

    Is it possible to install foam chamber in geodesic dome tank roof  (witn internal floating roof) instead of foam chamber in shell tank?? I have not found something about in NFPA 11. What criteria I should take i...
    mignot
    last modified by mignot
  • fire alarm and signaling code

    hi everyone,  I am new to the field and i need your advice. i couldn't find a rule of addressable fire system in NFPA 72, where does require to install "addressable fire system" and "conventional fire system...
    gk.karkashadze
    last modified by gk.karkashadze
  • Listed

    Dear All A question to members of this forum. NFPA describes "Listed" as Equipment included in a list published by an organization that is acceptable to the AHJ. OHSA (under United States department o...
    mch
    last modified by mch
  • NFPA 2001 ¿What would be my correction factor if my equivalent altitude is over 14,000 ft?

    In Chapter 5 in NFPA 2001, edition 2018  There is a table, Table 5.5.3.3 Atmospheric Correction Factors.   ¿What would be my correction factor if my equivalent altitude is over 14,000 ft? ...
    cperez_0
    last modified by cperez_0
  • FIRE HOSE REEL

    Hi  What is the standard size and length of Fire Hose Reel or Class II Hose Reel System? Where exactly is this mentioned in NFPA standard?   As per my knowledge Fire Hose Reel standard is 25mm dia and 30mtr ...
    josephjojoadoor
    last modified by josephjojoadoor
  • fire suppression detection

    If the room protected by a fire suppression system has a beam pocket, it is required/mandatory to provide Z1 & Z2 detector in any case?
    jcangayo
    created by jcangayo
  • seismic for life safety suppression system with 1.5 component importance factor in category. B

    Do I need seismic support for a fire life safety sprinkler suppression system in a category B building, when the component importance factor is 1.5 as referenced in ASCE 7 section 13.1.3 Refer to the attachments belo...
    jakidd
    created by jakidd
  • FM200 System - Nozzle Consideration For Multi heights

    Dear All  ,    Subject : Clean agent system ( FM200 Gas ) Nozzle Location In multi height area of Enclosure    Good Day ,    Enclosure having multi heights in the FM200 System pro...
    ashikpn
    last modified by ashikpn
  • Can a building owner remove a fire pump?

    I have a building owner that has a 38 year old fire pump that only supplied two standpipes in a 4 story apartment building. It did not supply sprinklers. About 10 years ago we removed the hoses and appliances in the b...
    m69421
    last modified by m69421
  • Bonding of an NFPA 13 System

    The building inspector is requiring an NFPA 13 sprinkler system to be bonded based on the 2017 NEC Section 250.104  Has anyone else run across this?  Here is what both sections state. Thank you, 8.18 El...
    cox
    last modified by cox
  • Number of chamber in vertical storage tanks

    Hello. A customer of mine is asking me to increase the number of foam chamber in a vertical storage tank, using 4 foam chambers instead of 2 required per NFPA 11 and the manufacturer recommendation, using the same tot...
    jfacevedob
    last modified by jfacevedob
  • Technical Background of the fire pump test

    Hi, I'm looking for the technical background of the annul test condition of the fire pumps. Especially, Why do I need to do the fire pump test under 150% of the rated capacity flow. If someone has the information ab...
    j.k.park
    last modified by j.k.park