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:
eration (nonamplified frequency range) up to 100 hertz. Ball joints and kinematics linkages of the shake tables likely generated these high frequencies inadvertently, without both the proper frequency content and sufficient energy being compatible with the amplified region of the RRS at high frequencies. Therefore, the use of such past test experience data for the seismic qualification of high-frequency-sensitive equipment or components in such a plant is inappropriate unless the frequency content of the power spectral density (PSD) of the test waveform was evaluated in accordance with Annex B, “Frequency Content and Stationarity,” to IEEE Std 344-2013. When licensees plan new seismic qualification tests for equipment in such plants, the formulation of the test input waveforms needs to consider this high-frequency excitation. 2. Functional Qualification of Active Mechanical Equipment ASME QME-1-2017 describes requirements and guidelines for qualifying active mechanical equipment used in nuclear facilities. The foreword to the standard indicates that it may be applied to future NPPs or existing operating NPP component replacements, modifications, or additions, as determined by regulators and the licensees. ASME QME-1-2017 provides functional qualification guidance for pumps, valves, dynamic restraints, and nonmetallic parts for those components. The following sections and appendices of ASME QME-1-2017 provide the functional qualification guidance for this active mechanical equipment: • Section QR, “General Requirements,” and its Mandatory Appendix QR-I, “Qualifications and Duties of Registered Professional Engineers for Certification Activities;” Nonmandatory Appendix QR-A, “Seismic Qualification of Active Mechanical Equipment;” and Nonmandatory Appendix QR-B, “Guide for Qualification of Nonmetallic Parts” • Section QDR, “Qualification of Dynamic Restraints,” and its Mandatory Appendix QDR-I, “Qualification Specification for Dynamic