Hot work is any activity that involves the use of a source of ignition. In most circumstances, an activity will only be categorised as hot work where it generates flames, sparks or heat, such as arc welding, brazing, cutting and grinding. However, in high risk environments (eg those containing flammable atmospheres), it includes activities that generate low-energy sources of ignition, such as drilling or using a hot air gun.

Employers must identify any processes that may involve hot work and the related risks (eg fumes, fire and electric shock). They must also ensure that the workplace environment is suitable for any tasks involving hot work, as this topic describes.

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