IEC/IEEE 60980-344:2020 核设施.对安全重要的设备.抗震鉴定

标准编号：IEC/IEEE 60980-344:2020

中文名称：核设施.对安全重要的设备.抗震鉴定

英文名称：Nuclear facilities - Equipment important to safety - Seismic qualification

发布日期：2020-10-20

标准范围

IEC/IEEE 60980-344:2020描述了建立抗震鉴定程序的方法，这些程序将产生定量数据来证明设备能够满足其性能要求。本文件适用于核设施中使用的电气、机械、仪表和控制设备/部件。本文件提供了设备抗震鉴定的方法和文件要求，以验证设备在规定的抗震要求期间和/或之后满足其规定性能要求的能力。本文件未规定抗震需求或性能要求。与质量保证、设备选择以及系统设计和修改相关的其他方面不属于本文件的一部分。由于抗震鉴定只是设备鉴定的一部分，本文件与IEC/IEEE 60780-323.抗震鉴定证明设备在受到至少一次安全停机地震（SSE/S2）产生的力期间和/或之后执行其安全功能的能力。这种能力是通过考虑在SSE/S2之前设备的老化和给定数量的低强度运行基础地震（OBE/S1）的假设发生来证明的。如果在设计规范中有规定，要考虑的老化现象是那些可能增加设备对SSE/S2引起的振动的脆弱性的现象。

IEC/IEEE 60980-344:2020 describes methods for establishing seismic qualification procedures that will yield quantitative data to demonstrate that the equipment can meet its performance requirements. This document is applicable to electrical, mechanical, instrumentation and control equipment/components that are used in nuclear facilities. This document provides methods and documentation requirements for seismic qualification of equipment to verify the equipment’s ability to perform its specified performance requirements during and/or after specified seismic demands. This document does not specify seismic demand or performance requirements. Other aspects, relating to quality assurance, selection of equipment, and design and modification of systems, are not part of this document. As seismic qualification is only a part of equipment qualification, this document is used in conjunction with IEC/IEEE 60780-323.
The seismic qualification demonstrates equipment’s ability to perform its safety function(s) during and/or after the time it is subjected to the forces resulting from at least one safe shutdown earthquake (SSE/S2). This ability is demonstrated by taking into account, prior to the SSE/S2, the ageing of equipment and the postulated occurrences of a given number of lower intensity operating basis earthquake (OBE/S1). Ageing phenomena to be considered, if specified in the design specification, are those which could increase the vulnerability of equipment to vibrations caused by an SSE/S2.

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