Tv. Vo et al., DEVELOPMENT OF IN-SERVICE INSPECTION PLANS FOR NUCLEAR-COMPONENTS AT THE SURRY UNIT-1 NUCLEAR-POWER STATION, Nuclear technology, 102(3), 1993, pp. 403-415
As part of the nondestructive evaluation reliability program sponsored
by the U.S. Nuclear Regulatory Commission at Pacific North west Labor
atory, a methodology has been developed for establishing in-service in
spection priorities of nuclear power plant components. The method uses
results of probabilistic risk assessment in conjunction with the tech
niques of failure modes and effects analysis to identify and prioritiz
e the most risk-important systems and components for inspection at nuc
lear power plants. Surry nuclear power station unit 1 was selected for
demonstrating the methodology. The specific systems selected for anal
ysis were the reactor pressure vessel, the reactor coolant, the low pr
essure injection including the accumulators, and the auxiliary feedwat
er. The results provide a risk-based ranking of components that can be
used to establish a prioritization of the components and a basis for
developing improved in-service inspection plans at nuclear power plant
s.