BRITISH STANDARD BS EN 60079-28:2007 Licensed copy: Strathclyde university, Strathclyde University Library, Version correct as of 22/11/2011 11:29, (c) BSI Explosive atmospheres — Part 28: Protection of equipment and transmission systems using optical radiation The European Standard EN 60079-28:2007 has the status of a British Standard ICS 29.260.20 12 &23