ANS 2.26-2004（R2017）规定:（i）核设施结构、系统和部件（SSC）为实现地震安全而选择抗震设计类别（SDC）的标准，以及（ii）为这些SSC选择极限状态以管理其抗震设计的标准和指南。选择极限状态是为了确保地震中所需的安全性能。本标准中使用的抗震设计类别（SDC）与国际建筑规范（IBC）中提到的SDC不同。关键词:核设施选址、地震危害、地震设计标准、核电厂设计、核安全

ANS 2.26-2004 (R2017) provides: (i) criteria for selecting the Seismic Design Category (SDC) for nuclear facility structures, systems, and components (SSCs) to achieve earthquake safety and (ii) criteria and guidelines for selecting Limit States for these SSCs to govern their seismic design. The Limit States are selected to ensure the desired safety performance in an earthquake. The Seismic Design Categories (SDCs) used in this standard are not the same as the SDCs referred to in the International Building Code (IBC).Keywords:nuclear facility siting, seismic hazards, seismic design criteria, nuclear plant design, nuclear safety