Tripping, falls, protruding objects. The temperature of the arc can reach 6000 C. Intense ultraviolet and infra-red rays can be harmful to both the welder and anyone else nearby. Damage to uncovered skin can be similar to severe sunburn.
Unprotected eyes can become extremely red and sore and in extreme cases suffer permanent damage.
Burns, fire, explosions Fumes and explosions. Avoid welding, cutting or heating empty drums. People have been killed this way when undetectable fuel residues vapourise and explode. Always check what's been inside, and if necessary clean the drum thoroughly before cutting, welding or heating. Hot metal surfaces, metal fragments and sparks can cause severe burns to unprotected skin.