S.L. 424.27 Art. 21Places where explosive atmospheres may occur.

(1) The employer shall classify places where explosive atmospheres may occur into zones in accordance with Annex II.

(2) The employer shall ensure that the minimum requirements laid down in Annex III are applied to places covered by subregulation (1) .

(3) Where necessary, places where explosive atmospheres may occur in such quantities as to endanger the health and safety of workers shall be marked with signs at their points of entry in accordance with Annex IV.