International Standards and Conformity Assessment for all electrical, electronic and related technologies
Functional Safety and the IEC

IEC 61508

Functional Safety

IEC 61508 Feedback form

Your feedback

Please use this form to submit a new question on IEC 61508 – Edition 1.0 or Edition 2.0 – or to comment on these web pages. Questions will be considered by IEC/SC65A/WG14, the committee responsible for introductory material on IEC 61508.


Before submitting a new question, please ensure that you have thoroughly read all the existing text and are sure that the answer cannot be found in a related question.


Members of WG14 are providing their services on a voluntary basis and have limited resources available. Questions will be prioritised according to the criteria below. The consultation and agreement process is likely to result in a response time of at least 1 to 2 months between the submission of a question and its answer being added to the FAQ.


Submitted questions will be prioritised according to how much committee members consider them to be:

  • within the scope of IEC 61508;
  • important -- in terms of informing a new user of key principles, concepts and requirements of the standard;
  • fulfilling the needs of many users.

It will not be possible to enter into personal correspondence as a result of a submission.