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:
e-performed as necessary when maintenance on a valve, valve repair, or replacement has the potential to affect valve functional performance. 3.9.6-22 Revision 4 – March 2017 (g) Guidance is included to address lessons learned from other valve programs in procedures and training specific to the AOV program. (h) Documentation from AOV testing, and maintenance records and records from the corrective action program, will be retained and periodically evaluated as part of the AOV program. (3) With respect to POVs other than AOVs and MOVs, the attributes of the AOV testing program, to the extent that they apply to and can be implemented on those POVs (such as electro-hydraulic valves), are acceptable. (4) Class 1E SOVs should be verified to function as designed. Each SOV should be verified, to the extent practical, to be capable of performing its safety functions for the electrical power supply amperage and voltage at design basis extremes. iii. Inservice Testing Program for Check Valves (1) The applicant should describe its IST program attributes for meeting the IST provisions in the ASME OM Code for check valves as incorporated by reference in 10 CFR 50.55a. For example, preservice tests should be conducted on each check valve. In addition, the ASME OM Code specifies that each check valve be tested in the open and closed direction, consistent with the safety function and under normal operating system conditions. Piping system design features should be able to accommodate all applicable check valve testing equipment and procedures. (a) Test equipment or nonintrusive techniques that monitor internal component conditions or measure such parameters as fluid flow, disk position, disk movement, disk impact forces, leak tightness, leak rates, degradation, and disk stability should be used, if practical, for preoperational testing and later during IST. The equipment and its operating principles should be described and the techniques justified. The operation and accuracy of the