Document: NRC Regulatory Guide
Document ID: cdc706d5-60ed-40a4-b55a-9771904107a7
Document Type: regulatory_guide
Title: Seismic Qualification of Electric and Mechanical Equipment for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1809/ML18093A675.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.100
CFR Part: 
CFR Title: 

Content:
ctive mechanical equipment. c. Sections QDR and QP Sections QDR and QP provide a reasonable approach to the qualification of dynamic restraints and active pump assemblies, respectively. These sections adequately document the state of the art of the nuclear industry in the qualification of dynamic restraints and active pump assemblies where implemented as described in Regulatory Position C.2.1.2. d. Section QV ASME QME-1-2017, Section QV, reflects valve performance information obtained from nuclear industry programs and the NRC’s research since the original development of ASME QME-1 in the 1980s. With the active involvement of industry personnel and the NRC staff in the development of ASME QME-1-2007 and its later editions, only a few NRC staff exceptions and clarifications are necessary for Section QV, including those based on experience with the initial implementation of ASME QME-1, as described in Regulatory Position C.2.1.2. e. Nonmandatory Appendix QV-B ASME QME-1-2017, Section QV, states that, for valve assemblies with extended structures and actuators qualified under IEEE Std 382-2006, “IEEE Standard for Qualification of Safety-Related Actuators for Nuclear Power Generating Stations,” (Ref. 38) static side load testing may be used as one acceptable method of seismic validation of the valve/actuator interface. Nonmandatory Appendix QV-B provides requirements and recommended practices for the “static side load testing” method of seismically qualifying active valve assemblies to demonstrate that active mechanical equipment in nuclear facilities can function as required during a design-basis earthquake. When determining the seismic test load force, users of ASME QME-1 should use the weight of the extended structure of the valve assembly in the calculation as described in Appendix QV-B. The seismic test load force should be applied at the center of gravity of the extended structure of the valve in the seismic side load test as described in Appendix QV-B.