• We test products so sometimes we have a number of flammable aerosols.  How many can be stored on the lab bench ?

    We test products so sometimes we have a number of flammable aerosols. How many can be stored on the lab bench ?
    last modified by busbyamr
  • Diesel Fuel Storage Tank Fire Protection

    In one of my project (Fiber Cement board Factory) there is diesel storage tank of 15 m3. Below are my queries:    1) What fire protection system is required for this tank as per NFPA 30 or other NFPA standa...
    last modified by abdulrafay80
  • NFPA59-2019 Response modification Factor

    NFPA 59-2019 edition page 31, section second para (2)  has changed the value of Rp=3, which was 6 in the previous edition. This doubles the seismic force. Is there any reson for this change. As per ASCE-...
  • NFPA 496 Applied to Compressor Building

    NFPA496: This is a purge and pressurize standard that I have only ever seen applied to electrical cabinets located in Class 1 Div 2/Zone2 areas; and MCC or control rooms located within a Class 1 Div2/Zone 2 building.H...
    last modified by vginter
  • NFPA 496 Question

    NFPA 496 Question Using a purged enclosure with general purpose equipment in a CL1 Div 2 area . If the equipment brings a combustible liquid into the purged enclosure can you use air for the purge? Would an inert p...
    last modified by kpenson
  • Distance between power transmission line and storage of flammable liquids (Petrol, Diesel)?

    Does any NFPA code provide safe distance guidelines between power transmission lines (high voltage) and storage of flammable petroleum products. (such as that on a gas station or petroleum depot) 
    last modified by haris_387
  • Questions concerning the judgment method and the safety action criteria for gas leakage from the LNG storage tank

    Title : Questions concerning the judgment method and the safety action criteria for gas leakage from the LNG storage tank   In order to complete the safety management standards of LNG storage facilities in K...
    created by dkbaek
  • ESD and Hazardous waste storage

    We have some 55 gal drums of flammable waste on site.  We keep them grounded with clamps to prevent static discharge.  Should we connect them through a resistor to slow the discharge and prevent sparking whe...
    created by stephen.mcdonald
  • NFPA terms (division/Zone)

    Hi,  In the NFPA 497 we speak about "division" and "zone". But, the area around figures still the same even if we speak about zones or divisions. Someone can tell what is the differences between this two terms ...
    last modified by ddufour
  • Parking Smoke system

    For parking smoke system, what is the max. number of smoke zone that can be connected to one smoke fan?
    last modified by amr.elkranfely
  • Hazardous Waster Storage

    Is there a space or building size requirement for hazardous waste that is stored onsite?  If so, where can I find more information on this topic?
    last modified by jwaite
  • Is it safe to make wet blasting on the top of crude oil floating roof tank

    if its not safe where i can find this issue from NFPA
    created by mohammedelassall
  • Bakery industrial occupancy

    Hi everyone, I'm wolontary firefigter from Croatia, and was wandering can industrial building with two flors and conveneance openings betwean them be as one compartment , and with conveneance storage of 1500m2, can al...
    last modified by dcvek1
  • shell to shell spacing

    there is a methanol storage facilities; 4 double roof tank will be constructed in common dike area with clock wise arrangement  and diameter of   each tank is supposed to be 55 meters. based on Nfp...
    created by b.jabarzade
  • Does anyone have information or a form for conducting a root cause analysis for fires you can share?

    There is a lot of RCA information available, but I have not found anything that is specifically designed for fires.
    last modified by willistowerswatson
  • Question regarding high voltage power lines

    Hi, I am looking for any guidance on separation distances between hazardous chemicals (both compressed gases and liquid oxidizers) and high voltage power lines. I have searched through the NFPA codes with little succe...
    last modified by tzeweiu
  • Fuel Dispensers

    Does anyone have a list or know of an agency that would have list of fuel dispenser manufactures and models that meet  the NFPA30A code?
    last modified by edcollupy
  • Is the fire class in NFPA 400 ( I - V) the same as Fire Hazard ( 1 - 5) on the MSDS?

    is the fire class in NFPA 400 ( I - V) the same as Fire Hazard ( 1 - 5) on the MSDS?
  • Repair Garages

    I am wondering about the applicability of NFPA 30A. Is the standard intended to apply only to automotive repair facilities (e.g., dealerships, lube shop/Firestone, etc.)  or does it include heavy machinery (e.g.,...
    last modified by jeff.churchill

    NFPA 85 : #PURGE CREDIT FOR COMBUSTION TURBINE & HRSG      We have SGT 700 gas turbine followed by HRSG. HRSG is capable to run 100% firing mode also.   As per customer requirement while...
    created by ratnadeep.sinha