Document: NUREG-0800
Document ID: 217aa53e-c4ac-4a8f-b1b6-968ad75d68ab
Document Type: srp
Title: INSERVICE TESTING OF PUMPS AND VALVES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070368.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.6
CFR Part: 
CFR Title: 

Content:
le), air supply (if applicable), minimum and maximum stroke time requirements (if applicable), and appropriate combinations. (2) The testing of each size, type, and model should include test data from the manufacturer (i.e., environmental qualification, seismic qualification, dynamic qualification, pressure testing), field test data for plant-specific dedication, empirical data supported by test, or test (such as prototype) of similar valves which support qualification of the required valve where similarity must be justified by technical data. (3) The purpose of this testing is to provide benchmark data and to demonstrate that the results of the testing under in situ or installed conditions can be used to ensure the capability of the MOV or POV to operate under design conditions. (4) Test data should be used to ensure that the structural capability limits of the individual parts of the MOV or POV will not be exceeded under design conditions. (5) Test data should be used to ensure that the valve specified for each application is not susceptible to pressure locking or thermal binding. 85 c. Prototypical testing of each size, type and model of check valve should be conducted, under a range of differential pressure and flow conditions up to the design conditions, to ensure the adequacy of check valves under design (design basis and required operating) conditions. 3.9.6-15 DRAFT Rev. 3 - April 1996 (1) The design conditions should include all the required system operating cycles to be experienced by the valve (numbers of each type of cycle and duration of each type cycle), environmental conditions under which the valve will be required to function, severe transient loadings expected during the life of the valve such as water hammer or pipe break, lifetime expectation between major refurbishment, sealing and leakage requirements, corrosion requirements, operating medium with flow and velocity definition, operating medium temperature and gradients, maintenance