The best, and correct, approach to ensuring EMC-related functional safety involves conducting a hazard and risk assessment, as required by the IEE guide, R0BT-004, IEC 61508, and IEC/TS 61000-1-2. Unfortunately, the last two of these are not yet perfect in their application of this safety methodology, and developments in other standards show a lack of understanding of the correct way to deal with this increasingly important issue. Attempts being made to improve this situation do not seem likely to result in most safety standards incorporating the state of the art in EMC-related functional safety for many years. The development and testing of software in safety-related and safety-critical systems has received considerable attention from the technical, academic, and standards-making safety community in recent years. Inadequate EMC performance can be just as important a threat to health and safety. This, however, is not yet receiving the attention it requires. People will suffer as a result.
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