本文件描述了核电站使用的1E级设备和接口的基本要求。提出的要求包括鉴定的原则、程序和方法。当满足这些鉴定要求时，将确认设备设计在正常、异常、设计基准事件、设计后基准事件和安全壳试验条件下的充分性，以实现1E级功能。

This document describes the basic requirements for qualifying Class 1E equipment and interfaces that are to be used in nuclear power generating stations. The requirements presented include the principles, procedures, and methods of qualification. These qualification requirements, when met, will confirm the adequacy of the equipment design under normal, abnormal, design basis event, post design basis event, and containment test conditions for the performance of Class 1E functions.