6.—(1) Effective and suitable provision shall be made to ensure that every enclosed workplace is ventilated by a sufficient quantity of fresh or purified air.
(2) Any plant used for the purpose of complying with paragraph (1) shall include an effective device to give visible or audible warning of any failure of the plant where necessary for reasons of health or safety.
(3) This regulation shall not apply to any enclosed workplace or part of a workplace which is subject to the provisions of—
(a)section 30 of the Factories Act 1961(1);
(b)regulations 49 to 52 of the Shipbuilding and Ship-Repairing Regulations 1960(2);
(c)regulation 21 of the Construction (General Provisions) Regulations 1961(3);
(d)regulation 18 of the Docks Regulations 1988(4).
1961 c. 34; section 30 is amended by S.I.1983/978.
S.I.1961/1580, to which there are amendments not relevant to these Regulations.