Safety Issues In Welding


There are several risk factors connected to welding. The arc emits extremely bright light and ultraviolet radiation, which may damage the eyes. Molten metal splashes and sparks can burn the skin and cause risk of fire, and the fumes generated in welding can be dangerous when inhaled.

These hazards can be avoided, however, by preparing for them and by using the appropriate protective gear.

Protection against fire hazard can be accomplished by checking the environment of the welding site in advance and by removing flammable materials from the proximity of the site. In addition, fire-extinguishing supplies must be readily available. Outsiders are not to be allowed to enter the danger zone.

Eyes, ears and the skin must be protected with the appropriate protective gear. A welding mask with a dimmed screen protects the eyes, hair and ears. Leather welding gloves and a sturdy, non-flammable welding outfit protect the arms and body from sparks and heat.

Welding fumes can be avoided with sufficient ventilation at the worksite

There are some risk factors connected to welding. Please read the operation and safety instructions supplied with the device and follow them during welding. Always be aware of others in the immediate working environment. Always think of protecting yourself and others from the harmful effects of arc light and heat radiation, and also resulting welding fumes.

1. USE OF PERSONAL PROTECTIVE EQUIPMENT

The arc and its reflecting radiation damage unprotected eyes. Always protect your eyes and face with an appropriate welding mask, note the dimming change requirements of the welding mask as the welding current changes.

The arc radiation and welding spatters burn unprotected skin. Always wear welding gloves, protective clothing and footwear.

2. SAFE MACHINE USE


  • Remember that parts of the equipment, such as the welding torch and filler wire, may become burning hot during use.
  • Never carry the machine during welding. Place the machine on an even, sound surface.
  • Never suspend the machine with a shoulder strap. A shoulder strap, if any, is provided only for carrying the machine.
  • Do not keep the machine near or on hot objects to prevent damage to the machine.
  • Keep the current and ground cable together to avoid the generation of magnetic fields. This reduces the exposure of the user to magnetic fields and interference to surrounding electric devices.
  • It is not recommended to wrap the cables around the body.

3. FIRE SAFETY

Welding is always classified as hot work, so pay attention to fire safety regulations during welding and after it. Fire can break out from sparks even several hours after the welding work has been finished!
  • Protect the environment from welding splatter.
  • Remove flammable materials, such as flammable fluids, from the welding vicinity and supply the welding site with adequate fire fighting equipment.
  • In special welding jobs, be prepared for hazards such as fire or explosion when welding container-type work pieces.
  • Welding in flammable or explosive sites is absolutely forbidden!

4. WELDING AND CUTTING SPATTER
  • Never direct the spark spray or cutting spray of a grinder toward the welding machine.
  • Beware of hot objects or splatter falling on the machine when working above the machine.

5. MAINS VOLTAGE
  • Do not take the welding machine inside a work piece, such as a container or vehicle.
  • Do not place the welding machine on a wet surface. Avoid from directly exposing the supply cable to water.
  • Change faulty and damaged power supply cables immediately as they can be lethal and may cause electrocution or fire.
  • Ensure cables or welding guns are not squashed by heavy objects and that they are not exposed to sharp edges or a hot work piece.
  • Note the recommended mains fuse size. An over-size mains fuse may damage the equipment.

6. WELDING POWER CIRCUIT
  • Insulate yourself from the welding circuit by using dry and undamaged protective clothing.
  • Do not work on a wet surface.
  • Do not use damaged welding cables or guns.
  • Do not put the welding gun or ground cable on the welding machine or other electric equipment.

7. WELDING FUMES AND SMOKE
  • Ensure proper ventilation and avoid inhaling the fumes.
  • Take special precautions when welding any metals or surface-finished objects that contain lead, cadmium, zinc, mercury or beryllium.
  • In closed spaces, such as containers, always ensure the sufficient supply of fresh air. You can also ensure the supply of clean and sufficient breathing air by using a fresh-air mask.

8. TRANSPORTATION, LIFTING AND SUSPENSION
  • Transport the welding device using a transportation or lift handle. Do not pull or lift the machine by the welding torch or other cables.
  • Only use a transportation trolley designed for the equipment.
  • If you move several machines, do so in an upright position.
  • Never use a welding machine when suspended unless the suspension device has been designed and approved for that purpose.
  • Never lift a gas cylinder and the welding machine at the same time. There are separate provisions for gas cylinder transportation.
  • Never move the protective gas cylinder with the flow adjuster in place. Always fix the gas cylinder securely in an upright position, against a cylinder wall rack or purpose-made cylinder cart. Close the cylinder valve after use.
  • Do not exceed the maximum allowed load of suspension booms or the transportation trolley of welding equipment.
  • It is recommended that the wire coil be removed during lifting or transportation.

9. ENVIRONMENT
  • If the machine is suitable for outdoor use, protect it from heavy rain or sunshine when outdoors.
  • Store the machine in a dry and clean environment and protect it from sand and dust during use and storage.
  • The recommended operating temperature range is -20 to +40 degrees centigrade. When welding in temperatures in excess of +40 °C, the duty cycle decreases and sensitivity to damage increases.
  • Site the machine so it does not come into contact with hot surfaces and welding spatter.
  • Make sure the airflow to and from the machine is unrestricted.
  • Often the electromagnetic compatibility (EMC) of professional devices is designed for use in an industrial environment. Such Class A equipment is not intended for use in residential location where the electrical power is provided by the public low-voltage supply system. A Class A device may interfere with sensitive home electronic devices

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Safety Issues In Welding