IAGC LAND GEOPHYSICAL SAFETY MANUAL Edition 9 ... - CGISS

1) When welding or cutting is necessary in hazardous areas, one person should standas a fire watch with a fire extinguisher. Move welding and cutting to the safestpractical area.2) Welding and cutting areas should be checked periodically for a combustibleatmosphere.3) All employees should wear eye and face protection. Depending on the nature of thework and the proximity of other welders, employees may also need to wear thefollowing as appropriate: fire retardant clothing, hard hat, ear protection andrespiratory protection.4) Care should be taken to prevent sparks from starting fires.5) Gas cylinders require careful treatment. Unused gas cylinders should be removedfrom the welding and cutting area.6) Acetylene regulators should be equipped with flame or flashback arrestors. Onlyauthorized factory personnel can service or repair regulators.7) Hoses should be kept out of doorways and away from other workers. If the hose isflattened, a flashback may occur.8) If flammable gas is detected, welding or cutting operations should be shut down.9) All welding operations should be performed according to authorized procedures.10) Hot metal should be marked with a sign or other warning when welding is complete.8.2.3.2 Acetylene (Gas) Welding and Cutting ToolsThe following precautions should be taken with gas welding and cutting equipment:1) Only qualified employees may use welding equipment.2) Close cylinder valves when work is finished, the cylinder is moved, or the cylinder isempty.3) Repair, replace, or clean, dirty or defective hoses. Do NOT repair or tamper withcylinders, valves, or regulators.4) Do not interchange regulator or pressure gauges with other gas cylinders.5) Keep cylinders in an upright position when in use.6) Never try to transfer acetylene from one cylinder to another.7) Never use cylinders as rollers or supports.8) Never use a match to ignite a welding torch. Always use an approved igniter.9) Never heat a cylinder to raise the pressure.10) Acetylene cylinders should be stored in an upright and secure position, with thedischarge valve closed and the protective valve cover screwed on.8.2.3.3 Controlling Sparks and HeatControl heat, sparks and slag when performing hot work:Page 115 of 136