Cylinders are heavy and awkward to handle. Frequent lifting and handling can cause back injuries and upper limb disorders. According to HSE (HSE INDB390 rev2), 51% of welders suffered 1 period of sickness over a two year period taking time off for muscle or joint & tender disorders (MSD Musculoskeletal Disorders). Other potential injuries include broken toes, trapped hands, leg and chest injuries.
An industry leading comprehensive guide to gas shielded arc welding and oxy-fuel cutting.