12.—(1) Every employer who provides any control measure, other thing or facility pursuant to these Regulations shall take all reasonable steps to ensure that it is properly used or applied as the case may be.
(2) Every employee shall make full and proper use of any control measure, other thing or facility provided pursuant to these Regulations and, where relevant, shall—
(a)take all reasonable steps to ensure that it is returned after use to any accommodation provided for it; and
(b)if he discovers a defect therein report it forthwith to his employer.