【正文】 IEC 61513, Nuclear power plants – Instrumentation and control for systems important to safety – General requirements for systems. The railways sector has also developed a set of European Standards (EN 50126。 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 615087:2020 E Page 2 EN 61508?7:2020 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jun 11 16:16:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of the International Standard IEC 615087:2020, prepared by SC 65A, System aspects, of IEC TC 65, Industrialprocess measurement and control, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 615087 on 20200703 without any modification. The following dates were fixed: – latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 20200801 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 20200801 Annexes designated normative are part of the body of the standard. Annexes designated informative are given for information only. In this standard, annex ZA is normative and annexes A, B, C and D are informative. Annex ZA has been added by CENELEC. IEC 61508 is a basic safety publication covering the functional safety of electrical, electronic and programmable electronic safetyrelated systems. The scope states: This International Standard covers those aspects to be considered when electrical/electronic/ programmable electronic systems (E/E/PESs) are used to carry out safety functions. A major objective of this standard is to facilitate the development of application sector international standards by the technical mittees responsible for the application sector. This will allow all the relevant factors associated with the application, to be fully taken into account and thereby meet the specific needs of the application sector. A dual objective of this standard is to enable the development of electrical/electronic/programmable electronic (E/E/PE) safetyrelated systems where application sector international standards may not exist. The CENELEC Report R0BT004, ratified by 103 BT (March 2020) accepts that some IEC standards, which today are either published or under development, are sector implementations of IEC 61508. For example: IEC 61511, Functional safety Safety instrumented systems for the process industry sector。i sches Komitee f252。 Europ233。ber Verfahren und Ma223。 Partie 7: Pr233。 la s233。lectroniques/233。mes 233。curit233。ISCHE NORM December 2020 ICS 。 BSI 15 March 2020 ISBN 0 580 36138 1 Summary of pages This docum ent prises a front cover, an inside front cover, the EN title page, pages 2 to 116, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jun 11 16:16:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 615087 NORME EUROP201。 — present to the responsible international/European mittee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed。Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jun 11 16:16:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BRITISH STANDARD BS EN 615087:2020 Incorporating Amendment to BS IEC 615087:2020 (renumbers the BS IEC as BS EN 615087:2020) Functional safety of electrical/electronic/ programmable electronic safetyrelated systems — Part 7: Overview of techniques and measures The European Standard EN 615087:2020 has the status of a British Standard ICS 。 Amd. No. Date Comments 13785 15 March 2020 Implementation of the European Standard Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jun 11 16:16:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 615087:2020 National foreword This British Standard is the official English language version of EN 615087:2020. It is identical with IEC 615087:2020. The UK participation in its preparation was entrusted to Technical Committee GEL/65, Measurement and control, to Submittee GEL/65/1, System considerations, which has the responsibility to: — aid enquirers to understand the text。 — monitor related international and European developments and promulgate them in the UK. A list of anizations represented on this mittee can be obtained on request to its secretary. Crossreferences The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogu e under the section entitled ―International Standards Correspondence Index‖, or by using the ―Find‖ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct app