In Korea, it is known that the commercial license of advanced cladding, which contains Nb and has increased corrosion-resistance, will be applied soon.
KAERI is modifying a regulatory fuel performance code to be used for the safety and design evaluation by KINS(Korea Institute of Nuclear Safety) during the HANA cladding licensing review.
The new code, based on FRAPCON code of NRC/PNNL, can consider the characteristics of HANA cladding, and is particularly interested in phenomena such as corrosion, creep, and irradiation growth which have a great influence on fuel performance.
From the results of the preliminary analysis, various effects(fuel centerline temperature reduction, FGR and rod internal pressure decrease, etc) caused by surface oxide thickness reduction were expected.
This paper summarizes the preliminary performance evaluation results of nuclear fuel with HANA cladding conducted by using the newly developed code.