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Typical welding hazards include the risk of fire and burns since many common welding procedures involve an open electric arc or flame – that is why welding is called hot work. The use of compressed gases and flames in many welding processes also poses an explosion and fire risk. Eye damage is a risk because of the brightness of the weld area. Electric shock is also likely when a welder touches two metal objects that have a voltage between them.

Health hazards associated with welding include dangerous gases and particulate matter. Fumes and gases, such as carbon dioxide, ozone, and fumes containing heavy metals, can also be dangerous to welders lacking proper ventilation and training.

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