[. Nzs, Electrical equipment for explosive atmospheres-Overhaul and repair [2] BS 7924: 1999 Code of practice for the repair and overhaul of certified electrical apparatus intended for use in mines susceptible to firedamp [3] Deep Mined Coal Industry Advisory Committee -1996 Guidance on the repair and overhaul of apparatus intended for use in coal mines susceptible to firedamp [4] Directive 94/9/EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of 23 March 1994 on the approximation of the laws of the mMembers States concerning equipment and protective systems intended for use in potentially explosive atmospheres. [5] IEC 60079-19: 1993 -Electrical apparatus for explosive gas atmospheres -Part 19: Repair and overhaul for apparatus used in explosive atmospheres, 1997.