Analytic approach to simulate vacuum drying for canister

Drying process of spent nuclear fuel must be required when spent nuclear fuel is transferred from wet storage to dry storage because oxidation composition could be bad effect of fuel cladding and long-term integrity of fuel cladding could not be guaranteed. Analytic approach to simulate vacuum drying was suggested. Simple vacuum drying process and repeated vacuum drying process were analyzed. The calculation program of vacuum drying was developed to analyze analytically vacuum drying process. The effect of residual water and temperature on vacuum drying was compared. As the temperature increased, required time for vacuum drying decreased due to faster evaporation of residual water. To meet vacuum dryness criteria, vacuum drying process should be repeated