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.
