DANSK DS/EN 61508-6 PDF

This part of IEC 61508 contains information and guidelines on IEC 61508-2 and IEC 61508-3. - Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3and sets out the fuctional steps in their applications. - Annex B gives an example technique for calculating the probabilities of hardware failure and should be read in conjunction with 7.4.3 and annex C of IEC 61508-2 and annex D. - Annex C gives a worked example of calculating dianostic coverage and should be read in conjuction with annex C of IEC 61508-2. - Annex D gives a methodology for quantifying the effect of hardware-related common cause failures on the probability of failure. - Annex E gives worked examples of the application of the software safety integrity tables specified in annex A of IEC 61508-3 for safety integrity leves 2 and 3.