• 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 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
  • 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
  • How can calculate Header Pipe Dimension?

    Hi I have a question about collectors piping at spray system fire fighting.  actually, we have a collector at piping with many outlet of it and I want to understand about calculation of them please follow un...
    yousef
    last modified by yousef
  • Steam Boilers running on LPG in basements

    Is there any restriction to install a steam boiler running on LPG in basements? What are the available ventilation systems to prevent the accumulation of LPG in case of leak. 
    eng_mikemo
    created by eng_mikemo
  • NFPA 59A distance requirement clarification

    Hello!   In NFPA 59A is there a 50 ft distance requirement from sloped LNG trenches (underneath LNG piping) to closest source of ignition such as generators, Electrical MCC equipment or Thermal oxidizers? C...
    sramanathan
    last modified by sramanathan
  • NFPA59-2019 Response modification Factor

    NFPA 59-2019 edition page 31, section 10.2.2.1 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...
    vginter
    last modified by vginter
  • 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...
    stephen.mcdonald
    created by stephen.mcdonald
  • 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
    mohammedelassall
    created by mohammedelassall
  • 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...
    tzeweiu
    last modified by tzeweiu
  • Listed PSV manifold in NFPA 58 for LPG storage?

    I was wondering what the intent of a listed manifold for PSVs is in NFPA 58, section 6.9.2.9. On our LPG bullets we have two independent lines communicating with the vapor space instead of a single manifold. Each line...
  • Commercial Propane Leak Detection System

    We are looking for a Propane Leak Detection System to have installed in to our 18,000 SqFt warehouse. We have 40+ Fork Lifts that we store inside at night. We've only been able to locate stand alone plug-in units. T...
    arsenk
    last modified by arsenk
  • Ethanol in drums storage room

    Hi all, need your help on HAC. For ethanol in drums (about 500kg each) in storage room (about 10 drums) with no activity to open the drum, should be classified as hazardous area or non-hazardous area? Those drums...
    lahar.baliwangi
    last modified by lahar.baliwangi
  • Best practices / legislation for design of industrial fire fighting facility

    I am currently in the process of designing an industrial fire fighting facility. I am looking for best practices / codes / legislation that can be used to design such a facilities and let the burns happen in a safe an...
    danfire
    created by danfire
  • What is your opinion about: Safety Instrumented Fire & Gas Systems?

    Dear Sirs.- I would like your opinions about Fire and Gas Systems and Safety Instrumented Systems
    guillermov
    last modified by guillermov
  • LPG PUMP ROOM REQUIREMENT FOR PUMPS INSTALLATION

    Hi  Good Morning,   I have a question regarding LPG pump room. Does the LPG Pump room require any shed or a building to install or they can be installed in an open atmosphere?     Please support ...
    nav822nav
    last modified by nav822nav
  • What is preferred elevation of hydrogen gas transmission pipeline?

    A hydrogen gas transmission pipeline (~300 psi) will be constructed just outside my factory fenceline in China, along the plant entrance road .  Is it safer for this line to be installed underground or ...
    daniel.lewis
    created by daniel.lewis
  • Dike Wall for LPG storage

    Hi Experts,   What is the requirement of dike walls for large LPG storage vessels?   Please support your answer with a code.       Thank you, KNK
    nav822nav
    last modified by nav822nav
  • 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