標準號：BS EN 61508-6-2010
中文標準名稱：電氣,電子,程序可控的電子安全相關系統的功能性安全.IEC 61508-2和IEC 61508-3標準的應用導則
英文標準名稱：Functional safety of electrical/electronic/ programmable electronic safety related systems. Guidelines on the application of IEC 61508-2 and IEC 61508-3
標準類型：N18
發布日期：2010/6/30 12:00:00
實施日期：2010/6/30 12:00:00
中國標準分類號：N18
國際標準分類號：13.260;25.040.40;29.020;35.020
適用范圍：1.1 This part of IEC 61508 contains information and guidelines on IEC 61508-2 andIEC 61508-3.– Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 andsets out the functional steps in their application.– Annex B gives an example technique for calculating the probabilities of hardware failureand 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 diagnostic coverage and should be read inconjunction with Annex C of IEC 61508-2.– Annex D gives a methodology for quantifying the effect of hardware-related commoncause failures on the probability of failure.– Annex E gives worked examples of the application of the software safety integrity tablesspecified in Annex A of IEC 61508-3 for safety integrity levels 2 and 3.1.2 IEC 61508-1, IEC 61508-2, IEC 61508-3 and IEC 61508-4 are basic safety publications,although this status does not apply in the context of low complexity E/E/PE safety-relatedsystems (see 3.4.3 of IEC 61508-4). As basic safety publications, they are intended for use bytechnical committees in the preparation of standards in accordance with the principlescontained in IEC Guide 104 and ISO/IEC Guide 51. IEC 61508-1, IEC 61508-2, IEC 61508-3and IEC 61508-4 are also intended for use as stand-alone publications. The horizontal safetyfunction of this international standard does not apply to medical equipment in compliance withthe IEC 60601 series.1.3 One of the responsibilities of a technical committee is, wherever applicable, to make useof basic safety publications in the preparation of its publications. In this context, therequirements, test methods or test conditions of this basic safety publication will not applyunless specifically referred to or included in the publications prepared by those technicalcommittees.1.4 Figure 1 shows the overall framework of the IEC 61508 series and indicates the role thatIEC 61508-6 plays in the achievement of functional safety for E/E/PE safety-related systems.