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 30mt...
    created by josephjojoadoor
  • 70E Question

    I have a question about format in 70E Can someone please tell me the format for measurements? (how it is written)   Is it metric (imperial) format like in NEC? Or is it imperial (metric) format like in all oth...
    last modified by chiefns830
  • Dry sprinkler head!

    Why nobody sells dry sprinkler heads with thread size less than 1" ? May be are not allowed thread sized 1/2" and 3/4"?
    last modified by niko
  • This should never happen.

                                            Thanks to NFPA and its readers they surely understand the true dimension of ...
    last modified by carretero110
  • Ceiling Void - Part of Light Hazard

    Dear NFPA Staff,   I understood that NFPA 13 has required quick-response type sprinkler systems in light-hazard occupancy.    In a light hazard occupancy, ceiling void (false ceiling) seems more than ...
    last modified by babu
  • Pool electrical codes

    I live in the United States in Pennsylvania.  I want to put a round above ground pool on my lot but hook the electrical into my sister's house.  Our back yards meet so this is possible.  My zoning offic...
    last modified by corralineamine
  • Elevator Lobby as Area of Refuge

    I have a high rise health care project where the architect is planning on using an enclosed elevator lobby as an area of refuge.  Fully sprinkled building as required and the egress stairway entrance is in the el...
    last modified by jplemmons
  • In the rv section 1192 is there a code that prohibits 120v wiring in ac ducts? I have a overheads ac units that is full of wiring

    In the rv section 1192 is there a code that prohibits 120v wiring in ac ducts? I have a overheads ac units that is full of electrical an tv wiring. It fills the duct about 70% and restricts the air flow.
    last modified by windmill458
  • Recent Fires at Residential Occupancies under Construction Reinforce Critical Importance of NFPA 241

    Townhouse complex fire in Reno, NV - Photo courtesy of Reno Gazette Journal   Two massive fires in the last ten days occurred at residential complexes under construction, reinforcing the critical importance of f...
    last modified by susanmckelvey
  • UL

    Do the electrical components of a Tunnel Boring Machine for a tunnel construction in Virginia have to be UL approved or listed?. The TBM will be mining in gassy conditions (C1D2)
    last modified by ernestorene
  • 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...
    last modified by m69421
  • NFPA-37. Maximum allowable Fuel Storage inside The Building

    I have some doubt regarding the Fuel storage tank within the building.   In one of the project in the basement level 3, we have  diesel fuel day tanks for the generators as below (Also drawing attached bel...
    last modified by rath
  • Fire Drills for Elementary Schools in COVID-19

    I am asking about fire drills during COVID-19.  I am looking at some aspects of reopening for my daughter's school in New York City.  Fire drills and social distancing are a concern.  The NY State regul...
    last modified by matt.bilson76
  • SCCR with control panels fed in series

    I am trying to interpret correctly the logic of the SCCR method suggested in NEC 409.110 (4).b  which is the UL508A SCCR Calculation. According to this method, all the components in the feeder circuit would defin...
    last modified by zeno
  • Necesito una Bomba hidraulica para Prueba Hidrostatica de Red Contra Incendio (red de Hidrante), alguna marca o modelo Listada????

    Que bombas listadas hay???Fire Protection Systems
    last modified by parce@suatrans.pe
  • Powder addition to flammables tank

    Hi,  I'm in a situation with a process that requires addition of powder to a 250L tank that contains ethanol. About 5 kg of powder is added, in 1kg batches. The issue I have is that the powders are weighed and di...
    last modified by rrousseau
  • Gas Interface with HVAC

    Why there is nothing mentioned about the gas detector in return duct. While HVAC in re-circulation mode. if there is a build up or increase in hazard gas concentration inside the building due to infiltration or...
    last modified by mohammad.talibkhan
  • Can a propane tank be buried under a deck?

    Looking for opinions on placing underground propane tanks under decks at single family homes.  The code does not really address it unless you consider the deck a "Building."  Thanks for your input.
    last modified by edward
  • NFPA’s new fact sheet addresses critical fire protection and life safety considerations for safe usage of tents

      UPDATE: Last month, I posted a blog (see below) that addressed fire and life safety considerations for restaurants and other businesses using tents to reopen amid the COVID-19 pandemic. As a follow-up to that ...
    last modified by smahoney
  • In Canada, it’s Wildfire Community Preparedness Day all summer

    Canadians are resilient – we’ve got wild weather and mosquitoes as big as helicopters.   So when 161 groups that received $500 awards from FireSmart Canada had to postpone Wildfire Community...
    last modified by lking