7. Construction of blasting chamber

It shall be the duty of the occupier of a workplace in which blasting is carried out within a blasting chamber to ensure that the requirements of paragraphs (2), (3) and (4) are complied with.

Every blasting chamber shall be —

of sound construction;

so situated or constructed as to prevent, so far as is reasonably practicable, dust escaping from it;

provided with suitable and adequate means of access which shall at all times be kept free from obstruction; and

provided with inspection ports placed at suitable locations.

The interior of every blasting chamber shall, so far as is practicable, be free from projections on which dust might settle.

The illumination of every blasting chamber shall not be less than 200 lux over all parts of the chamber measured in a horizontal plane at one metre above the floor.

It shall be the duty of the occupier of a workplace in which blasting is carried out within a blasting chamber to ensure that the requirements of paragraphs (2), (3) and (4) are complied with.

Every blasting chamber shall be —

of sound construction;

so situated or constructed as to prevent, so far as is reasonably practicable, dust escaping from it;

provided with suitable and adequate means of access which shall at all times be kept free from obstruction; and

provided with inspection ports placed at suitable locations.

The interior of every blasting chamber shall, so far as is practicable, be free from projections on which dust might settle.

The illumination of every blasting chamber shall not be less than 200 lux over all parts of the chamber measured in a horizontal plane at one metre above the floor.