Document: NUREG-0800
Document ID: c1650863-1de1-414d-af2a-3303c5a3d208
Document Type: srp
Title: FUNCTIONAL DESIGN, QUALIFICATION, AND INSERVICE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070720041.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.6
CFR Part: 
CFR Title: 

Content:
on of valves to be tested. The valve test program should ensure that safety-related valves will remain capable of performing their safety functions until the next scheduled test. The importance of the valve should be considered in determining an appropriate mix of exercising and diagnostic testing. SRP Section 3.9.7 contains the acceptance criteria necessary for the review and their methods of application. In SRP Section 3.9.7, the NRC staff describes procedures and acceptance guidelines for its review of proposed plant-specific, risk-informed changes to a licensee’s IST program. The review procedures are consistent with acceptable methods implementing a risk-informed IST program that follow RG 1.174 and RG 1.175. Alternatively, an applicant may use NRC-approved risk-informed ASME Code cases referenced in RG 1.192 to construct a risk-based approach for IST programs. Subsection ISTD of the ASME OM Code incorporates alternative provisions for determining snubber visual inspection intervals and corrective actions, which the staff recommended in Generic Letter (GL) 90-09 1. Functional Design and Qualification of Pumps, Valves, and Dynamic Restraints A. For new plant applications, safety-related pump, valve, and piping designs should include provisions to allow testing of pumps and valves at the maximum flow specified in the plant accident analyses. B. Functional design and qualification of each safety-related pump and valve should be accomplished such that each pump and valve is capable of performing its intended function for a full range of system differential pressure and flow, ambient temperatures, and available voltage (as applicable) under all conditions ranging from normal operating to design-basis accident conditions. C. Acceptance criteria for the design of dynamic restraints (snubbers) are provided in SRP Section 3.9.3. D. Acceptance criteria for the design and installation of safety and relief valves are provided in SRP Section 3.9.3. E. Acceptance criteria