279(1)An employer shall ensure that a welding, cutting, burning or soldering operation is not undertaken
(a)
on a closed container,
(b)
on a container or pipe, or any pipe, valve or fitting connected to the container or pipe, containing any amount of an explosive or flammable substance, or
(c)
on a container or pipe filled with exhaust from an internal combustion engine.
279(2)An employer shall ensure that equipment and materials to be welded, cut, burned or soldered are free of hazardous substances.
279(1)An employer shall ensure that a welding, cutting, burning or soldering operation is not undertaken
(a)
on a closed container,
(b)
on a container or pipe, or any pipe, valve or fitting connected to the container or pipe, containing any amount of an explosive or flammable substance, or
(c)
on a container or pipe filled with exhaust from an internal combustion engine.
279(2)An employer shall ensure that equipment and materials to be welded, cut, burned or soldered are free of toxic substances.