257(1)Where safety catches are in use, an employer shall ensure that the safety catches and mechanisms of the cage or other shaft conveyance are tested at least once every three months.

257(2)The tests referred to in subsection (1) shall consist of releasing the empty conveyance suddenly in some suitable manner from rest, so that the safety catches have the opportunity to grip the guides.

257(3)Where the safety catches do not act satisfactorily, an employer shall ensure that the cage or other shaft conveyance is not used for lowering or raising employees or material until the safety catches have been repaired and tested and shown to act satisfactorily.