• Flow distribution in a combined system and PRV

    A question that has always flummoxed me is the use of Pressure reducing valves before individual zone control valve assemblies below 12.1 bar (175psi). I am going to quote an arbitrary example below so that my peers r...
    last modified by najafafzal

    Hi, needing help in solving this problem.   Based on NFPA 14 : 1 standpipe can operate maximum flow rate at 379 l/min and for our plant the total standpipe needed is 7 based on theoretical demand rate on each eq...
    last modified by asrulbenjamin
  • Mythblaster Monday 6: Home Fire Sprinklers Really Beat the Heat

    Everyday, we see countless, heartbreaking reminders of how fast a fire can destroy one’s home and impact one’s life. Advances in fire protection technology like smoke alarms have become widely used, but ho...
    last modified by cthompson
  • extension cord for appliance

    I have a office that needs to have power for a refrigerator.. Put I have only 2 options  1. run a new line to the  appliance 2. run a extension cord with a gfci..   I know i can do the first one. But...
    last modified by jrendon6861
  • 19 Years Later: What Lessons Have We Learned from 9/11?

    Every year on this day, I am overwhelmed with a sense of sadness that almost seems as raw as it did on that beautiful September morn in 2001. Tears flow. Memories flood. And I wonder, what have we learned in the after...
    last modified by jimpauley
  • Fire pump inlet strainer for Lagoons

    . Hi, At present we have two 500,000 gallon open lagoons for fire sprinkler water. At present we have drained down these for cleaning and inspection. One of the reservoirs has 2 bulbous 12" strainers at the suction ...
    last modified by michael.p.cole
  • Hospital basement with Tunnel / Trench

      To whom it may concern,   Good day!!!   I encountered a scenario in the hospital basement, tunnel / trench are attached to the basement (please find attached image with information for reference), ...
    last modified by totoy_1211
  • Full coverage smoke detection needed?

    This is a standalone, single-story 6,800sf building that is fully sprinklered and classified as Ambulatory Healthcare (Dialysis center). Is it required to have full coverage smoke detection? What code section should I...
    last modified by cgy
  • Spare capacity in SLC as per NFPA 72

    Hi guys, I know that in accordance with NFPA 72, 20% spare capacity for every Loop/SLC is required? But I don't know the reference. Can anyone mention the reference if I am correct? If I am wrong please also mention it.
    last modified by abircuet2010
  • Can a path of egress include a reversal of vertical direction?

    I have an elevated platform.  A LARGE and very LONG elevated platform.   The primary exit is on one end.   The other end has a fire escape ladder that goes... UP... to another platform.  Then...
    last modified by althalus
  • 3rd floor apartment with secondary egress for emergency that goes into / through another occupied apartment.

    I manage a building that consists of five 1 bed apartments (2 on 1st floor, 2 on 2nd floor and 1 on the third floor).   The 3rd floor unit has one means of egress via a wooden deck / stairway on back o...
    last modified by vincehanson@yahoo.com
  • No Test Header and/or “Booster Pumps”.

    Hi there,      This is a two scenario question.  1. In an existing building with no fire pump test header, is it permissible to use Standpipe /  2 1/2” Fire Hose Cabinet valves to cond...
    last modified by bikerben

    In an storage area (storage material will be plastic bottles for juice and milk) we have to provide sprinkler system. Although, the storage hazard is light but client is asking for sprinkler system. The ceiling height...
    last modified by abdulrafay80
  • FDC Pipe Size

    Hello,    I am looking for an official interpretation regarding NFPA 13's FDC Pipe Sizing Guidelines. gives contradictory and unclear guidance for this matter and I am in need of NFPA's interpretat...
    last modified by aten
  • NFPA 15 Question* Steel pipe with wall thicknesses less than Schedule 30 [in pipe sizes 8 in. (200 mm) and larger] or Schedule 40 [in pipe sizes less than 8 in. (200 mm)] shall not be joined by threaded fittings. ...
    last modified by fernando_akamine
  • Research Underway to Study Pulmonary and Cardiovascular Systems in Wildland Firefighters

    As of Thursday, more than 26,000 firefighters across 12 states are fighting 102 large fires over 4.4 million acres. If you find yourself gasping for air just viewing footage, can you imagine what firefighters on the f...
    last modified by amandakimball
  • In NFPA 72, I just want to know what makes a fire detection system a "total or complete coverage"? I can not find a definition and section 17.3.1 just says what is included

    We have a remodel of a locker room and the contractor stated that he is use to seeing smoke detectors in the locker room, but this locker room did not have any. When looking up NFPA 72 for an answer hoping to come acr...
    last modified by eric.watkins
  • Fire Panel Dialer communication

    Need to know the newest requirements on POTS line vs Radio communication for a fire panel dialer. Whats the required way that my fire panels should be using in today's requirements.
    last modified by sscheid
  • Fire Prevention Week is Almost Here. Are You Ready?

    “Serve up Fire Safety in the Kitchen” is the theme for this year’s Fire Prevention Week, October 4-10, highlighting the need for people to “cook with care” in the kitchen. And it's less t...
    last modified by avastis
  • A Better Understanding of NFPA 70E: The 2021 Edition of the Standard

    If you haven’t been keeping up with the NFPA 70E, Standard for Electrical Safety in the Workplace revision cycle, the 2021 edition was issued June 1, 2020 with an effective date of June 21, 2020. Independent sta...
    last modified by ccoache