Oxy-Acetylene Torch Safety

//Oxy-Acetylene Torch Safety
Oxy-Acetylene Torch Safety 2017-10-10T15:25:10+00:00

EntirelySafe Forums Course Sandbox Oxy-Acetylene Torch Safety

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  • CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    t

    CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    – Oxygen and acetylene gases mixed at the correct proportions and ignited produce
    one of the hottest flames known – Up to 6300 deg F
    – Every time you use oxygen-acetylene equipment, if certain safety guidelines are
    not followed, it is the same as handling live explosives ready to go off…….
    -Rules for Handling & Using Regulators
    • Be extremely careful when removing from cylinders
    • Never use oil or grease
    • Do not attempt to interchange oxygen and acetylene regulators
    • Check adjusting screw before opening cylinder valve
    • Crack cylinder valves before attaching the regulators
    • If a regulator creeps, have it repaired immediately
    • If the gauge doesn’t return to zero when pressure is released, have it repaired
    • Keep tight connections between the regulator and the cylinder
    • Have a qualified repair person check the regulator if it does not function
    properly • WARNING! Never stand in front of or behind a regulator when opening the valve

    CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    – Oxygen and acetylene gases mixed at the correct proportions and ignited produce
    one of the hottest flames known – Up to 6300 deg F
    – Every time you use oxygen-acetylene equipment, if certain safety guidelines are
    not followed, it is the same as handling live explosives ready to go off…….
    -Rules for Handling & Using Regulators
    • Be extremely careful when removing from cylinders
    • Never use oil or grease
    • Do not attempt to interchange oxygen and acetylene regulators
    • Check adjusting screw before opening cylinder valve
    • Crack cylinder valves before attaching the regulators
    • If a regulator creeps, have it repaired immediately
    • If the gauge doesn’t return to zero when pressure is released, have it repaired
    • Keep tight connections between the regulator and the cylinder
    • Have a qualified repair person check the regulator if it does not function
    properly • WARNING! Never stand in front of or behind a regulator when opening the valve

    CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    Oxy-Acetylene Torch Safety – Regulator
    3
    The internal working parts of the regulator are precision units. Only qualified technicians should clean or repair a regulator!
    Low Pressure Gauge
    indicates delivery
    pressure to hoses &
    torch
    High Pressure Gauge
    indicates pressure
    from tank
    Inlet Connection
    -Oxygen LH thread
    -Acetylene RH thread
    Keep free of oil/
    grease / dirt
    Pressure Adjusting Screw
    -Turn clockwise allows gas
    to flow
    -Turn counterclockwise
    reduces or stops gas flow

    CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    Oxy-Acetylene Torch Safety – Backfires & Flashbacks
    4
    • Backfires occur when the torch flame burns back into the torch tip and is extinguished with a loud pop.
    • They occur either because the torch tip touched the work or because of insufficient gas pressure.
    • They are generally harmless, however, backfires can turn into flashbacks!
    • When this happens, the popping sound turns to a whistle as the gases burn back through the tip and torch head. If not stopped, the fire can travel through and damage the torch, hoses and explode the cylinder!
    • A common inside diameter of oxy-fuel gas hose is 1/4 inch. If you calculate the volume of 100 feet of hose with an inside diameter of 1/4 inch, this means, should oxygen enter the fuel gas hose or should fuel gas enter the oxygen hose, a mixed gas explosion with the force potential of 20 sticks of dynamite could occur!
    • Check valves and flashback arrestors help prevent this.
    If a flashback occurs, immediately turn off the oxygen, then the acetylene and allow the torch unit to cool. Check for damage and make repairs as needed!!

    CaspianexplorerFuad Jalilov
    Keymaster
    Post count: 37

    Oxy-Acetylene Torch Safety – Backfires & Flashbacks
    4
    • Backfires occur when the torch flame burns back into the torch tip and is extinguished with a loud pop.
    • They occur either because the torch tip touched the work or because of insufficient gas pressure.
    • They are generally harmless, however, backfires can turn into flashbacks!
    • When this happens, the popping sound turns to a whistle as the gases burn back through the tip and torch head. If not stopped, the fire can travel through and damage the torch, hoses and explode the cylinder!
    • A common inside diameter of oxy-fuel gas hose is 1/4 inch. If you calculate the volume of 100 feet of hose with an inside diameter of 1/4 inch, this means, should oxygen enter the fuel gas hose or should fuel gas enter the oxygen hose, a mixed gas explosion with the force potential of 20 sticks of dynamite could occur!
    • Check valves and flashback arrestors help prevent this.
    If a flashback occurs, immediately turn off the oxygen, then the acetylene and allow the torch unit to cool. Check for damage and make repairs as needed!!

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