Where respiratory protective equipment is provided, the employer or self-employed person must ensure that -
(a) the relevant equipment is capable of keeping the exposure level below the OEL for asbestos;
(b) the relevant equipment is correctly and properly used, stored and maintained;
(c) information, instruction, training and supervision that are necessary with regard to the use of the equipment are provided to the persons; and (d) the equipment is kept in good, condition and efficient working order.