Mixing of oxygen and fuel inside the hose.įlashback caused by reverse flow of gas through the torch and back through to the hose, regulator and/or cylinder, potentially causing an explosionįire or explosion caused by ignition of flammable/combustible vapors/materials present in processing equipment such as tanks, vessels, and piping, etc., that have void spaces or liners (i.e., double-walled tanks and piping, double-bottom tanks)Ĭhemical Release / Environmental Impact (On-Site and Off-Site) If oxy-acetylene cylinders do not have sufficient material in the cylinders prior to start of the job, backflow can happen if one cylinder goes empty during operation which can cause: Hazards associated with hot tap equipment:ĭamage and defective parts, if not replaced prior to start of the job Interference with other simultaneous work in close proximity (e.g., work involving breaking containment and potential release of combustible gases while hot work is present.) Impinging heat to surrounding process equipment, causing possible thermal expansion resulting in the release of hydrocarbons,Īrc from welding, possibly setting off fire detection / mitigation systems (i.e., deluge systems, alarms resulting in possible unit shutdowns, etc.) While the direct hazards of hot work are important, the risks from fires and explosions are typically more significant, especially in operational areas.Ĭreating an ignition source (flame, heat, sparks, non-intrinsically safe equipment, molten metal, or direct flames) in a combustible atmosphere (flammable materials/vapors) leading to fire or explosion.Ĭaution must be taken when working near openings or cracks in walls, flooring, open doorways, and windows. Injuries from sparks, etc., to personnel working in the area or passing nearby (or at a lower level below the work) may occur if the area is not properly isolated or access is not restricted and there is no additional protection such as a fire blanket. Potential of personnel overexposure to welding or flame cutting fumes, especially: The eyes are particularly sensitive to burning, including from light radiation - “arc eye”. A hot surface or a spark can burn skin, either by contact or from radiated heat. Skin/eye burns, and electric shock are potential direct hazards. Hot work presents direct personnel hazards to those involved in the task, or to those working nearby.
0 kommentar(er)
