• Can a flammable storage cabinet be stored within the 35' radius of a designated hot-work area?

    NFPA51b requires combustible materials be at least 35' away from a Hot Work area, including a "Designated" Hot Work area. NFPA51b and NFPA30 don't specifically cover whether you can store a flammable chemical storage ...
    chet.hand
    last modified by chet.hand
  • Fire prevention during hot work. How close does a fire extinguisher need to be to the area in which you are welding, cutting.. etc...?

    Fire prevention during hot work. How close does a fire extinguisher need to be to the area in which you are welding, cutting.. etc...?   I have read through NFPA 51B,  and ANSI 249.1. Both documents state t...
    mhphelps
    last modified by mhphelps
  • Container for IIIB liquids in Warehouses

    9.4.1 NFPA 30 (2015 Ed.) does not regulate containers for IIIB liquids unless the building is considered protected storage, see the Annex A note. One possible interpretation is that if one wants to bring IIIB liquids ...
    awiley
    last modified by awiley
  • 3D printing combustible dusts

    Looking for information regarding combustible dusts that are produced from 3D printing.  These can include RAD materials, as well as combustible metals that are used.
  • Staircase - firerating of "I" section structure

    Hello,   In my mall project, the staircase enclosure is 2 hr. fire rated as per NFPA - 101. The staircase is constructed in well load "I" section structures from 10th level of multiple basement to ground level a...
    sourabhchowdhuri
    created by sourabhchowdhuri
  • State of ILLINOIS pressure vessel registration and inspections

    In the state of IL do pressure vessels (in this case air compressor receiver tanks) require registration and inspection by the office of the state fire marshal?   Thanks,
    mielemaster
    last modified by mielemaster
  • How to cross check the LPG tanks safety distances mentioned in NFPA 58

    Hi Everyone   The safety distances mentioned in NFPA 58 for LPG tanks storage is on basis of any calculations or it is as per some practical knowledge of some experts?  how can we calculate the distanc...
    nav822nav
    created by nav822nav
  • Fire Protection Requirement for Conveyor Belts in Milk Factory

    This is with regards to a milk factory for which we are designing a fire fighting system. There are various packaging machines/conveyor belts in the factory which are of Stainless Steel make. Conveyors are made of sta...
    dkb.1990
    last modified by dkb.1990
  • 110.26(A)(3) - Working Space Height Requirements

    Hello,  Is there an exception to the 6.5ft overhead clearance?  Specifically I have a 24" x 24" junction box that only has 24VDC in it and would like to mount it onto a machine that will house an IO rack. (...
  • Safe distance between Engine exhaust and Fuel tank. A 300 Kva diesel engine exhaust silencer pointing towards a diesel tank of (capacity 35000 liters).

    I need to know the safe distance between 300 Kva diesel engine exhaust silencer pointing towards a diesel tank of (capacity 35000 liters).   We have a huge Diesel tank with its retaining boundary wall around the...
    afzaal
    last modified by afzaal
  • National Foam Calculations

    Is there a standard national equation used to calculate foam flow that can be adjusted for all types of foam?  
    olde
    last modified by olde
  • Can an ESFR Sprinkler be used on a ceiling slope exceeding a pitch of 2 in 12 ?

    In NFPA 13 - 2016 it's clearly stated at 8.4.6.2 that ESFR sprinklers shall be installed only in buildings where roof or ceiling slope above the sprinklers does not exceed a pitch of 2 in 12 (a rise of 2 units in a ru...
    omar.dargham
    last modified by omar.dargham
  • Exhaust fan / sprinkler head / classified space FAS shutdown

    I am installing exhaust fans in an industrial plant that is C-I D-I. the  fans will replace passive ridge vents. Each fan will move +30K cfm. In the center of the opening below each fan is a sprinkler head. I hav...
    eddy_harkins
    last modified by eddy_harkins
  • Cableless Controls

    Our current project is implementing a cableless control, and clarification is needed on two points in NFPA 79, 9.2.7.   What is needed to fulfill the memory verification requirement of 9.2.7.1.1? When are prede...
    mdkrum
    created by mdkrum
  • dry pipe system in basements - how is it suitable

    Dry riser system to be given in basements of a mixed occupancy of a mall. The mall is having 10 basement parking level. As per NFPA; how it could be considered to design. Dry riser / pre - action system to be followed...
    sourabhchowdhuri
    created by sourabhchowdhuri
  • UL94 Flammability testing

    I am looking for information on the applicable standard to reference when setting up a burn chamber for UL94 Flammability testing.  
    aflorin
    last modified by aflorin
  • NFPA 58 Piping Gasket Materials

    In section 6.9.3.5.5 of NFPA 58, is the requirement for a 1500F melting point for the metal material only or also the material confined within the metal of a gasket. We are considering a spiral wound gasket for flange...
    clyde.beer
    last modified by clyde.beer
  • NFPA 484 Storage of Light Casting Size

    npfa 484 15.8.2.1.3.2 states " piles of stored light magnesium castings, either in cartons or crates or without packing, shall be limited in size to 28m^3.   My question is this.  Our product has a volume o...
    zwelch
    created by zwelch
  • Wildfire Heat Flux

    I need to convert heat flux measured in  kW/m2   (into laymen's terms).  In addition, how would this symbol  convert (or can it) to either heat (Fahrenheit or Celsius) or speed (i.e. foot...
  • NFPA 850 BENEATH TURBINE FIRE PROTECTION

    Hey! I have few questios about NFPA 850. First. Does the 7.7.3.6 indicates that I have to comply with all the 5 items there or if I have one of them I´m in accordance with that paragraph? Second. 7.7.4.1.1 indic...
    iyvf
    last modified by iyvf