本标准为核电站安全相关电缆系统（包括相关电路）的设计和安装提供了指导。还提供了可能影响安全相关系统功能的非安全相关电缆系统的设计、安装和性能要求指南。它为1E级电路电缆系统的电缆贯穿件、防火带、电缆防火带和电缆系统外壳的应用提供了指导。

This standard provides direction for the design and installation of safety-related electrical cable systems, including associated circuits, in nuclear power generating stations. Also provided is guidance for the design, installation and performance requirements of those non-safety related cable systems that may affect the function of safety related systems. It provides guidance on applications of cable-penetration, fire stops, cable fire breaks, and cable-system enclosures for cable systems for Class 1E circuits.