• Fire Hydrant Piping Leak

    we have recently commissioned our fire network consisting of fire hydrants and sprinklers. During the commissioning of fire pumps, it was found that pressure is dropping in the fire hydrant underground piping network ...
    ananthars90
    last modified by ananthars90
  • Foam sprinkler system design considerations

    I am looking for design solution with Foam sprinkler system for temp controlled ( 22-25 Deg C) storage area with a height of 12 mtr having flammable materials stored. Question : does this covered in NFPA 16? if not do...
    hemantkhadse
    last modified by hemantkhadse
  • Determining of Design Area in Hotel Building

    Hi,       i need expert opinion on subject mentioned, I m working in MEP contracting company as a mechanical engineer, I need to perform fire sprinkler hydraulic calculation for one of our pr...
    alisaif2012
    last modified by alisaif2012
  • Fire Protection requirement for Conveyor Belts

    I have a question regarding the requirements to protect conveyor belts. Is there any requirement for fire protection of conveyor belt other than NFPA that are regarding coal mines? I want to know whether NFPA have th...
    sslfire
    last modified by sslfire
  • Sprinkler instead of fire rated doors

    I have an Ambulatory Surgery Center that needs a 1 hour fire rating to separate it from the adjacent functions in a medical office building and it is under the NFPA 101 2012 edition. The waiting room has existing glas...
    johngl4664
    last modified by johngl4664
  • What is the difference between a sprinkler design and a sprinkler installation, to what extent does each person's responsibility

    #In a sprinkler design already reviewed by the Design Engineer, can the installer add more sprinklers to the system without letting the designer know? Or it is the designer who should review this new owner requirement...
    tony.vergara
    last modified by tony.vergara
  • Water supply for Sprinkler system plus Outside Hose

    I have a question about the selection of pump capacity and water tank size,    As per my requirement, water demand for sprinkler system will be 1400gpm plus 250gpm for outside hose = 1650 gpm...
    kalidas.pk
    last modified by kalidas.pk
  • Recommended Testing Point for Firepump

    At which point is it recommended to perform a fire pump performance test: 1) At the furthest point of the system 2) At the fire pump Can anyone answer this? Thanks
    lisellewalters
    last modified by lisellewalters
  • Fire Pump/Underground water storage tank

    Anyone have any suggestions on a fire pump being located inside a building and 70000 gallon tank under a building.There is no direct access into the room. Everything I am seeing is that the room needs to be 2 hr rated...
    ggerbasi
    last modified by ggerbasi
  • Classification around digester gas storage

    Classification around digester gas storage: NFPA 820-2020 calls for Division 1 within 3m around digester gas storage tanks, valve, etc. However, there is no requirements on Division 2.  NEC specifies that there...
    kzhang
    created by kzhang
  • max. allowance of sprinkler head by floor on OH group!

    I'm working on sprinkler system of one airport terminal, my problem is that the height of sprinkler head in some part of grid goes up to 9.7 m from the floor. The system is calculated with OH2 group. May need to upgra...
    niko
    last modified by niko
  • What is a sprinkler system break? (NFPA 13)

    In NFPA 13 (2019) point 20.6.6.6.1 or errata 13-19-2 point 20.6.5.3.1 specifies "Draft curtains separating ESFR sprinklers at system breaks or (...) shall be permitted."   Is a system break the space between two...
    m.kurzawa
    last modified by m.kurzawa
  • Residential  FDC

    Do residential sprinklers require a 1 1/2" IDC FOR Duplexes?
    jgresch
    last modified by jgresch
  • Two Valve Low Point Drains on Dry Systems

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    sfsprink
    created by sfsprink
  • Beam spacing clarification for smoke detectors nfpa 72

    Need clarification on NFPA-72, section 17.7.3.2.4.2 for beam pockets and waffle type beam configurations.   it says beam spacing greater or less than 40%...is this beam spacing referring to both width and length...
    gkiouzellis
    last modified by gkiouzellis
  • Sprinkler system and standpipe

    We have a main public firefighting pipe in the site (Yard) that fed by fire pumps and fire hydrants are mounted on this pipe. The (residential) buildings in the site are equipped with sprinkler and class II...
    alirezazamani
    last modified by alirezazamani
  • NFPA 15 - Open Nozzle Discharge Test for Operational Building

    I've got an existing operational industrial building that will have a new sprinkler system installed. As per NFPA 15-2017, Section 10.4.3.1, the spray nozzles must be tested. Read verbatim:   10.4.3.1 The water ...
    richardwong18
    last modified by richardwong18
  • Is it acceptable to use CPVC piping in the Fire Sprinkler Riser.

    The contractor wants to use a 1.5"CPVC pipe from where the domestic water (Copper pipe) splits off and  through the riser that includes the check valve, flow switch and pressure gauge.
    jim.matichuk
    last modified by jim.matichuk
  • NFPA 10 Form for Mobile / Tablet

    score5
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    I wanted to share this great tool for mobilizing the NFPA eforms: https://docspace.io  You can fill out the NFPA10 forms on your mobile or tablet device. Plus it adds additional functiona...
    japagley
    last modified by japagley
  • Solid unit load of nonexpanded plastic, voids of air.

    According to table 21.3.3(b) we can protect a solid unit load of nonexpanded plastics. In definition point 3.3.200 we can read: "Solid Unit Load of Nonexpanded Plastic (Either Cartoned or Exposed). A load that does no...
    asprojekt
    created by asprojekt