Preliminary development of an integrated approach to the evaluation of pressurized thermal shock as applied to the Oconee Unit 1 Nuclear Power Plant

Probabilistic modeling for fracture mechanic studies of reactor vessels with characterization of uncertainties

“…The first PTS study (Selby et al, 1985a(Selby et al, , 1985bBurns et al, 1986) offered an integrated approach to PTS evaluation. While it proved to be the most accurate analysis at that time, considerable new information and technological advances in all three pertinent areas of PRA, TH, and especially PFM, required a reassessment of this PTS study.…”

“…So the models do not address the model uncertainty, especially those involved in choosing RT NDT as the index temperature. While RT NDT involves conservative estimations, there are three different procedures for calculating this shift (i.e., NB-2332, Generic, or MTEB 5.2 Procedures) (Burns et al, 1986).…”