Probabilistic Risk Assessment (PRA)

EXCEL’s professionals have extensive involvement with nuclear utilities performing the various evaluations necessary for surveillance interval extensions. EXCEL can provide the engineering analysis necessary, whether or not the plant has implemented a Surveillance Frequency Control Program (SFCP), per TSTF-425. EXCEL has extensive experience in the development of surveillance failure analyses, instrument drift analyses, instrument uncertainty/setpoint calculations, and Probabilistic Risk Assessment (PRA) revisions, as necessary to support surveillance interval extensions.