• Industrial Occupancies

    In the NFPA 101 40.3.5 extinguishment requirement (reserved). how can select the firefighting system in the Industrial Occupancies?
    created by ahmad.kraifeh
  • Detection in elevator pits

    NFPA 72 requires detectors to be installed in some elevator pits and also specifies that these detectors be accessible for testing and maintenance which presumably means you can test the detector without taking the el...
    last modified by ben_oregan
  • Fire Barrier and Fire Doors

    Hello, Regarding fire and/or smoke resistance rated barriers. I've noticed doors in these barriers do not carry the same fire resistance rating as the barrier itself. I.e., a 1 hr. fire resistance rated barrier has a...
    last modified by sean_sullivan
  • Fire water storage refilling time as per NFPA 850

    I am working on a power plant project now. Since it is a power plant we follow requirements of NFPA 850 most of the time. The of NFPA 850 (2015 ed.) says that the 8-hour requirement of refilling time can be ex...
    last modified by minhyeong1.kim
  • I have a question regarding NFPA 86 Ovens and Furnaces, Ch 8 on Purging of Combustion Systems

    Our client has two Regenerative Afterburners (RABs) which are used to oxidize organic vapors and carbon monoxide from a sludge thermal conditioning system. Each RAB has two gas fired burners at the top of the oxidizer...
    created by infocenter
  • NFPA 30 vs ACGIH approach to ventilating liquid storage areas

    I'm working on a liquid storage area and with regard to ventilation, Section 18.6.1 & 18.6.2 of NFPA 30 (2018) require a horizontal air flow in liquid dispensing areas to ensure movement across all portions of the...
    last modified by laura.radle
  • Door interlock from 2021

    Hello, Our company is a producer of packaging machines which are equiped with electrical enclosure. The enclosure has two doors, which are opened using special key and has on it´s side wall main switch (attache...
    created by pavel.zika
  • Does it fall under the definition of an extension fitting according to NFPA 13 16.8.6 ? 

    Good evening dear network, I have a question about some types of sprinkler installations that I observe in the supermarkets mostly in my city. NFPA 13 allows this type of installation, which I will now summarize and a...
    last modified by caceresaguirre.gianfranco
  • Can we use condensed aerosol fire extinguisher in occupied space?

    hi; I want to use condensed aerosol fire extinguisher in archives. Is it safe for its clerks? I heard some news about death of people in Thailand due to inhaling  aerosol fire extinguisher. 
    created by crb7
  • Crowd Managers

    Hello all!   My department is in the beginning stages of creating a crowd management program- per IFC-2018 - and I am curious if anyone has created a similar program?   More specifically I'm curious, are y...
    last modified by savanna
  • NFPA 96 and Solid Fuel Cooking/Fixed water pipe with hose

    I am looking for the interpretation of NFPA 96 Chap 14 for solid fuel cooking. I understand the requirements regarding size of the fire box and the installation of a water hose. My question is, Is the hose used for fi...
    last modified by gburnett63@gmail.com
  • NFPA 850-Transformer separation requirements

    Hello guys, I would like to seek your advice regarding the requirements in NFPA 850 about the transformer separation requirements which require a firewall depending on the transformer oil capacity. In our case, the ...
    last modified by vincent_balbuena
  • NFPA 409 - Aircraft Hangar Fire Protection System Design

    Dear Team, We have an Aircraft Hangar of size 90*81 M in our project and I am designing the fire protection system for this Hangar as per NFPA 409-2011, section 6.1.1 (3) – overhead automatic sprinkler system w...
    last modified by suhaskurikkal
  • Class I: landing valve at roof

    As per NFPA-14 section 7.3.2* “(5) *At the highest landing of stairways with stairway access to a roof, or on roofs with a slope of less than 4 in 12 where stairways do not access the roof”   My quest...
    Abu Ismaeel
    last modified by Abu Ismaeel
  • Fire Protection for Palm Oil Production Facilities

    These kind of facilities have many processes to produce some products that are very flammable (oils and flour). Also Oils are  storaged in tanks and flour in warehouses. How can I protect this kind of occupancy?...
    last modified by rumana
  • Water flow exterior notificatin devices

    Dear NFPA Member,   NFPA 13-2020 Paragraph 7.7 Water Alarm Devices states "Waterflow alarm devices shall be listed for service and so constructed and installed that any flow of water from a sprinkler system...
    last modified by john_rutherford
  • Duct penetration through rated structure

    Question about a duct penetrating a single floor of a 3A Library building where there is no requirement for separation of spaces from floor to floor but there is a requirement to protect the structure.  NFPA 220 ...
    last modified by cboivin
  • Pizza Ovens

    Do Pizza Ovens that are not solid fuel and not "warming ovens" (like found in sandwich shops), need a hood?  Are they considered "upright broilers" as defined in NFPA 96?  Do they need a suppression system?&...
    last modified by nfpacodes
  • EXCP (EXtraneous Conductive Parts) and ECP (Exposed Conductive Parts) bonding requirements per NFPA79 and NFPA70

    Hello,   I have a question in regard to NFPA70 article 250 and NFPA79 8.2.1 with EXCP and ECP. If a machine, ECP, has a part that can not be energized but is considered an EXCP per NFPA79 definition; does the EX...
    created by stephen.hafner
  • 6" nominal transverse flue width

    If a rack storage array can guarantee well-defined, vertically-aligned 3-in. transverse flue spaces (e.g., through physical flue stops, etc.), does this meet the intent of what NFPA 13 is ultimately (and technically) ...