2013NF C23-579-0:2013 Explosive atmospheres - Part 0: equipment - General requirements
2010NF C23-579-0:2010 Explosive atmospheres - Part 0 : equipment - General requirements.
2007NF C23-241-0:2007 Electrical apparatus for use in the presence of combustible dust - Part 0 : general requirements.
2003NF C23-581-1-1/A1:2003 Electrical apparatus for use in the presence of combustible dust - Part 1-1: electrical apparatus protected by enclosures - Construction and testing.
2000NF C23-581-1-1:2000 Electrical apparatus for use in the presence of combustible dust - Part 1-1 : electrical apparatus protected by enclosures - Construction and testing.