Safety Analysis for Accident Tolerant Fuels with Increased Enrichment and Extended Burnup

Safety Analysis of Chromium-Coated Accident-Tolerant Fuels with Increased Enrichment and Extended Burnup [Slides]

“…In this section, a brief description of the BDBA model is provided. This was also provided in the FY-2023 report [3] but is reproduced here for convenience. An analysis was performed for a severe accident analysis that was initiated from a recovered large-break loss-of-coolant accident (LBLOCA) focusing on the source term by using MELCOR [1].…”

“…A beyond design-basis accident (BDBA) (e.g., severe accident) is considered-addressed in NUREG-0800, "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition" [2]. In FY 2023 [3], the project also performed a consequence analysis from released radioactivity across the engineered safety boundary and to the environment for the FeCrAl case. The consequence analyses support understanding changes between the conventional Zr clad fuels as related to NUREG-1465 [4], which was developed for the conventional Zr clad fuel with lower burnup, and ATF-clad fuels.…”