Document: NUREG-0800
Document ID: f0ec8180-bdec-47b1-b10f-926bce888716
Document Type: srp
Title: FUNCTIONAL DESIGN, QUALIFICATION, AND INSERVICE TESTING PROGRAMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1613/ML16134A116.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.6
CFR Part: 
CFR Title: 

Content:
sis capability. The actuator output capability was not addressed as part of the JOG program and, therefore, will be addressed separately. ASME Code Cases OMN-1, “Alternative Rules for Preservice and Inservice Testing of Active Electric Motor-Operated Valve Assemblies in Light-Water Reactor Power Plants,” and OMN-11, “Risk-Informed Testing for Motor-Operated Valves,” as accepted by the NRC staff with conditions in RG 1.192, provide an alternative method to MOV stroke-time testing that also satisfies the requirement in 10 CFR 50.55a to supplement the OM Code IST provisions with a program to ensure that MOVs continue to be capable of performing their design-basis safety functions. When incorporated by reference in 10 CFR 50.55a, the 2009 Edition (and later editions) of the ASME OM Code will specify implementation of Appendix III, “Preservice and Inservice Testing of Active Electric Motor Operated Valve Assemblies in Light-Water Reactor Power Plants,” that will replace the quarterly stroke-time 3.9.6-20 Revision 4 – March 2017 testing of MOVs with periodic exercising and verification testing. Where applicable, the NRC regulations will require the applicant to satisfy Appendix III to the ASME OM Code as incorporated by reference in 10 CFR 50.55a; this will also satisfy the periodic verification provision in 10 CFR 50.55a(b)(3)(ii). (2) Periodic testing should be conducted that objectively demonstrates continuing MOV capability to perform its safety functions to open and close, as applicable, under design-basis conditions. Where testing is not conducted under design-basis conditions (e.g., under environmental conditions), an analysis combined with test results should demonstrate the continued design-basis capability of the MOV. (3) The interval between testing demonstrating continued design- basis capability should not exceed 5 years or three refueling outages, whichever is longer, unless a longer interval can be justified. Longer design-basis verification