The expected hazardfs involved in mechanical works

Injury to workers during handling of materials. 
Hands or legs caught underneath loads.Burns ,electric shock during welding works and other hot works ,short cir cute & fire incide4nts.
Collapse of cranes & other lifting equipments.
Failiear of lifting tools & tackles.
Eye injury due to falling particles during grinding,grit blasting & power brushing.
Suffocation due to excessive smoke or dust during welding & blasting operations.
Swinging of load and hitting on existing facilities during rigging operation in strong wind.
Welders trapped underneath pipes during welding works -as support are moved.
Back fire and explosion of compressed gasses during oxy -acetylene flame cutting.
Hazards due to smoking in prohibited areas.
Hazards due to bursting of pipe lines during hydro testing at high pressure range.