标准摘要
[中文适用范围]： IEC SC 45A系列标准在每部分引言中的d)项包含一个总体描述，概述了该系列的整体结构以及与其他标准机构和标准（例如特定的IAEA安全导则和IEC 61508）的关系。本文档旨在扩充该描述，使单个IEC SC 45A国际标准的用户能够更全面地理解该系列的整体结构及其与其他标准机构和标准的关系。 [外文原描述]： IEC TR 63400:2025 augments that description to enable users of individual IEC SC 45A standards to obtain a more comprehensive understanding of the overall structure of the series and its relationship with other standards bodies and standards. The publication of this document and its subsequent editions should also enable minor changes in the structure to be described without the need for amending the common description that is included in the Introduction, item d), of all IEC SC 45A documents.
英文名称Nuclear facilities - Instrumentation, control and electrical power systems important to safety - Structure of the IEC SC 45A standards series