BS EN IEC 60709:2019 pdf download – Nuclear power plants – Instrumentation, control and electrical systems important to safety – Separation.
The top-level documents of the IEC SC 45A standard series are IEC 61 51 3 and IEC 63046. IEC 61 51 3 provides general requirements for I&C systems and equipment that are used to perform functions important to safety in NPPs. IEC 63046 provides general requirements for electrical power systems of NPPs; it covers power supply systems including the supply systems of the I&C systems. IEC 61 51 3 and IEC 63046 are to be considered in conjunction and at the same level. IEC 61 51 3 and IEC 63046 structure the IEC SC 45A standard series and shape a complete framework establishing general requirements for instrumentation, control and electrical systems for nuclear power plants. IEC 61 51 3 and IEC 63046 refer directly to other IEC SC 45A standards for general topics related to categorization of functions and classification of systems, qualification, separation, defence against common cause failure, control room design, electromagnetic compatibility, cybersecurity, software and hardware aspects for programmable digital systems, coordination of safety and security requirements and management of ageing. The standards referenced directly at this second level should be considered together with IEC 61 51 3 and IEC 63046 as a consistent document set. At a third level, IEC SC 45A standards not directly referenced by IEC 61 51 3 or by IEC 63046 are standards related to specific equipment, technical methods, or specific activities. Usually these documents, which make reference to second-level documents for general topics, can be used on their own. A fourth level extending the IEC SC45A standard series, corresponds to the Technical Reports which are not normative.
The IEC SC 45A standards series consistently implements and details the safety and security principles and basic aspects provided in the relevant IAEA safety standards and in the relevant documents of the IAEA nuclear security series (NSS). In particular this includes the IAEA requirements SSR-2/1 , establishing safety requirements related to the design of nuclear power plants (NPPs), the IAEA safety guide SSG-30 dealing with the safety classification of structures, systems and components in NPPs, the IAEA safety guide SSG-39 dealing with the design of instrumentation and control systems for NPPs, the IAEA safety guide SSG-34 dealing with the design of electrical power systems for NPPs and the implementing guide NSS1 7 for computer security at nuclear facilities. The safety and security terminology and definitions used by SC 45A standards are consistent with those used by the IAEA. IEC 61 51 3 and IEC 63046 have adopted a presentation format similar to the basic safety publication IEC 61 508 with an overall life-cycle framework and a system life-cycle framework. Regarding nuclear safety, IEC 61 51 3 and IEC 63046 provide the interpretation of the general requirements of IEC 61 508-1 , IEC 61 508-2 and IEC 61 508-4, for the nuclear application sector. In this framework IEC 60880, IEC 621 38 and IEC 62566 correspond to IEC 61 508-3 for the nuclear application sector. IEC 61 51 3 and IEC 63046 refer to ISO as well as to IAEA GS-R part 2 and IAEA GS-G-3.1 and IAEA GS-G-3.5 for topics related to quality assurance (QA). At level 2, regarding nuclear security, IEC 62645 is the entry document for the IEC SC 45A security standards. It builds upon the valid high level principles and main concepts of the generic security standards, in particular ISO/IEC 27001 and ISO/IEC 27002; it adapts them and completes them to fit the nuclear context and coordinates with the IEC 62443 series.
The IEC SC 45A standards series consistently implements and details the safety and security principles and basic aspects provided in the relevant IAEA safety standards and in the relevant documents of the IAEA nuclear security series (NSS). In particular this includes the IAEA requirements SSR-2/1 , establishing safety requirements related to the design of nuclear power plants (NPPs), the IAEA safety guide SSG-30 dealing with the safety classification of structures, systems and components in NPPs, the IAEA safety guide SSG-39 dealing with the design of instrumentation and control systems for NPPs, the IAEA safety guide SSG-34 dealing with the design of electrical power systems for NPPs and the implementing guide NSS1 7 for computer security at nuclear facilities. The safety and security terminology and definitions used by SC 45A standards are consistent with those used by the IAEA. IEC 61 51 3 and IEC 63046 have adopted a presentation format similar to the basic safety publication IEC 61 508 with an overall life-cycle framework and a system life-cycle framework. Regarding nuclear safety, IEC 61 51 3 and IEC 63046 provide the interpretation of the general requirements of IEC 61 508-1 , IEC 61 508-2 and IEC 61 508-4, for the nuclear application sector. In this framework IEC 60880, IEC 621 38 and IEC 62566 correspond to IEC 61 508-3 for the nuclear application sector. IEC 61 51 3 and IEC 63046 refer to ISO as well as to IAEA GS-R part 2 and IAEA GS-G-3.1 and IAEA GS-G-3.5 for topics related to quality assurance (QA). At level 2, regarding nuclear security, IEC 62645 is the entry document for the IEC SC 45A security standards. It builds upon the valid high level principles and main concepts of the generic security standards, in particular ISO/IEC 27001 and ISO/IEC 27002; it adapts them and completes them to fit the nuclear context and coordinates with the IEC 62443 series. At level 2, IEC 60964 is the entry document for the IEC SC 45A control rooms standards and IEC 62342 is the entry document for the ageing manageme