The IET working group on EMC for Functional Safety has drafted  some practical guidance to complement the EMC for Functional Safety Book and IEC 61000-1-2.  The approach taken is to suggest techniques and measures that will improve the operational resilience of a safety system to EMI, similar to the approach taken in IEC 61508 to deal with other systematic faults and failures.  In fact, many of the techniques and measures are drawn from those in IEC 61508, but presented in terms of their usefulness in mitigating the effects of EMI.



The first draft intended for public comment is available in the IET Safety Community files area at https://communities.theiet.org/communities/files/47/2613 (you need to be logged in as a member of the community to access this URL - registration is free).



The working group would like feedback as to whether the general approach is useful and practical, and whether the approach meets the objective.  If the general approach is acceptable, then of course more detailed comments would also be welcomed.

Comments will be accepted in any form, but it would be helpful if the IEC comments form is used, with proposed alternatives/changes supplied against each comment.



Comments and proposed changes should be sent to Keith Armstrong, keith.armstrong@cherryclough.com, phone 01785 660 247 and must be received by 18th June 2013.