Alireza Hemmati - Natural Resources and Environment Engineering Department, Islamic Azad University of Abadeh, Fars, Iran.
Ali Rostami
Sadegh Farhangian

working at confined space is one of the most dangerous of all workplace hazards especially when it accompanies with another dangerous work like welding. Electrical shock, oxygen deficiency, under pressure cylinders, explosion and fire are most potential dangers of welding job at confined space. Gas testing at confined space before starting job and also using suitable personal protective equipment and welding safety requirement can help reduce dangers of welding at confined space.

Gas testing, Hazards, Safety, Welding