An employer shall -
(a) provide work clothing which does not give rise to electrostatic discharges for use in places classified as hazardous pursuant to Regulation 170(1)(b) to any employee who is obliged to carry out work or duties in such places and is appropriate for the carrying out of such work or duties in such places;
(b) where necessary, ensure that persons at work are given optical or acoustic warnings or both, and are withdrawn before the explosion conditions are reached; and
(c) where required by the explosion protection document, provide and maintain escape facilities to ensure that, in the event of danger, persons at work can leave endangered places promptly and safely.