Duty to limit use of equipment

In subregulation (3), the use of equipment is controlled if —
(a) the equipment is enclosed during its use; or
(b) the equipment is designed to capture or suppress airborne asbestos and is used in accordance with its design; or
(c) the equipment is used in a way that is designed to capture or suppress airborne asbestos safely; or
(d) any combination of paragraphs (a), (b) and (c) applies.