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:
ation between major refurbishment, sealing and leakage requirements, corrosion requirements, operating medium with flow and velocity definition, operating medium temperature and gradients, maintenance requirements, vibratory loading, planned testing and methods, test frequency and periods of idle operation. The design conditions may include other requirements as identified during detailed design of the plant systems. (2) The testing of each size, type and model should include test data from the manufacturer, 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) Test data should be used to ensure proper check valve application, including selection of the valve size and type based on the system flow conditions, installed location of the valve with respect to sources of turbulence, and correct orientation of the valve in the piping (i.e., vertical vs. horizontal) as recommended by the manufacturer. (4) Valve design features, material, and surface finish should ensure that nonintrusive diagnostic testing methods available in the industry or as specified can be accommodated. Flow through the valve should be determinable from installed instrumentation, if appropriate, and valve disk positions should be determinable without disassembly, such as by the use of nonintrusive diagnostic methods. Valve internal parts should be designed with self-aligning features to ensure correct installation. (5) The maximum loading on the check valve under design basis and required operating conditions should be compared to the allowable structural capability limits for the individual parts of the check valve.86 Technical Rationale87 The technical rationale for application of these acceptance criteria to reviewing inservice testing of pumps and valves is discussed in the following paragraphs:88 1. Compliance with