• 2020 Updates on 51B

    I'd like to know where I can find the 2020 updates of the NFPA 51B Standard for fire prevention during welding, cutting, and other hot work. Thanks. 
    jecika.mongrain
    last modified by jecika.mongrain
  • How do I calculate the volume of foam required for gasoline and diesel Burial tank?    Horizontal cylindrical tank The diameter of the tank is 3.7 meters and its length is 15 meters

    Foam extinguishing system for underground tanks gasoline
    en.sharif2012
    last modified by en.sharif2012
  • Table 307.1 (1) "accumulatively"

    In table 307.1 (1) under flammable liquids storage, if both note "d" and "e" apply, does this mean that you can double the initial amount (120 gallons) to 240 gallons, and then double that amount (240 gallons) to 480 ...
    john.plat
    last modified by john.plat
  • AVgas Loading Rack 

    Hello Xchange   I have a question regarding NFPA 407. If a loading and unloading rack for an exiting fuel farm is located outside the perimeter fence ( the tank still inside the plant). It is required to have a ...
    efrain.santiago
    last modified by efrain.santiago
  • Sulphur conveying system

    Hi I have been working in 1 project about conveying system for Sulphur in Sulphonation plant. I have been checking for some information about assessment due to combustible dust / flameable gas due to this work. I ...
    nfpaunilev
    last modified by nfpaunilev
  • NFPA 86 Exlosion Relief Requirement Exceptions

    Hello,  I am looking for information on how to take exception to NFPA 86 explosion relief requirements for Class A & B Natural Gas fired Ovens. My situation: I have an oven that cannot physically meet the 15 ...
    john.teske#itsllcusa.com
    last modified by john.teske#itsllcusa.com
  • NFPA 704 Multiple "Special Hazards"

    Hello all, What course of action should you take if all 3(three) "Special Hazards" are present in your building? I realize that if a substance is both an oxidizer and reactant to water you put -W-(lets pretend the li...
    d12thknight
    last modified by d12thknight
  • Subsurface Foam Injection

    The SFPE Handbook and various vendors advise that subsurface injection of foam is not recommended for internal, floating roof tanks.  Are there any studies or incidents that support this position? Thanks
    peter@dwan.ca
    last modified by peter@dwan.ca
  • 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...
    rrousseau
    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...
    mohammad.talibkhan
    last modified by mohammad.talibkhan
  • How to size the Explosion Reliving Device for Starch Siloes

    Hi, I would like to know the requirements and equations I need to use based on NFPA codes, to : 1) Size the Explosion relieving Devise , i.e., Explosion Panel or Explosion Hatch for Starch Siloes used in Pulp& Pap...
    reza.sabet
    last modified by reza.sabet
  • Can we calculate fire water requirements for a hydrocarbon well drilling site/rig site?

    Drilling rigs usually have their own fixed water spray system but how can we, as a client ensure that it is sufficiently designed? Secondly, is there a requirement of any additional firewater inventory to cool down th...
    mussarat7
    last modified by mussarat7
  • NFPA-30-Extract- Clarification required

    NFPA-30 EXTRACT
    peerkalam
    last modified by peerkalam
  • What happened to NFPA 49?

    What happened to NFPA 49 - "Hazardous Chemicals Data?" I only see it in the current "Fire Protection Guide to Hazardous Materials, 2010 Edition." If it no longer exists, where can I find the data? For example, I want ...
    rtquier
    last modified by rtquier
  • Can anyone know how to arrange electricla containers?

    Hello, everyone! We have three substaitions and each substaion have mutiple electrical distributions stored in every container, now, we need to arrange the electrical containers in the ground plan, please see the atta...
    zhangya
    last modified by zhangya
  • Fire load and  Hazard Category of an occupancy/Industry

    Kindly clarify exact relation between Fire load and Hazard category of  an occupancy/Industry (Light/Ordinary/High) in perspective of designing fire protection system of an industry.....      
    panchal.aashish17
    last modified by panchal.aashish17
  • fm200 and inert gas systems discharge test (concentration test)

    is a discharge test  requested for the fm200 and inert gas system?
    engahmed.2010
    last modified by engahmed.2010
  • Help needed in research of an eco-friendly extinguishing agent.

    Hello dear community!   I've come here in a quest to at least lay the basis of a future research on the topic of eco-friendly firefighting foams. As you all know the typical types of firefighting foams are ...
    hary_stefanov
    last modified by hary_stefanov
  • What are the Fire Extinguisher requirements for diesel tank farms?

    What are the Fire Extinguisher requirements for diesel tank farms? Just every 75 feet? 20 pounders?
    dmaynor
    last modified by dmaynor
  • Recommendations for separation distances between outdoor transformer and buildings

    Hello Everybody,   One of our application transformer was located very close to control building. We are not able to keep required safety distance from transformer to the control building. So, we are looking...
    bcelikel
    last modified by bcelikel