The requirements for method of protection ‘ic’ are currently included in the standard IEC 60079-11:2006 and the requirements for “nL” contained in IEC 60079-15:2005, have been removed from the latest version IEC 60079-15:2010 (Ed.4). However,

•  Is the comparison between Ex ‘nL’ and Ex ‘ic’ for Zone 2 clear?

•  What effect will this have on the Ex manufacturer and end-user?

Sira’s Senior I.S Certification Engineer, Peter Walsh, looks at the transition of the two levels of protection, and highlights the practical issues and possible solutions of the move.


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Does the method of Protection ‘ic’ adequately replace ‘nL’ for Zone 2’ equipment?


For more information or to discuss the points raised in the article, please contact Sira:

Tel: +44 (0) 1244 670 900
Email: info@siracertification.com