Review on Definition of Damaged Spent Nuclear Fuel for Dry Storage

As Kori Unit 1 was permanently shut down, decommissioning of NPP became urgent task in Korea. Management of spent nuclear fuel (SNF) which is generated during decommissioning has come to the fore on the important issue. The occurrence of damaged SNF can be increased due to high burnup and extended fuel cycle which can improve efficiency of NPPs. Currently, where dry storage is required as the wet storage becomes saturated, domestic definition and classification of damaged SNF is required. However, domestic definition on damaged SNF is vague and there is no classification in Korea. Therefore, it is necessary to review definition and classification of damaged SNF by country for derivation of domestic standard. Domestic nuclear fuel is based on the design of US type fuel, and domestic long-term storage management policy is similar with US policy. We should develop a domestic standard in order to prepare dry storage by referring to the US standard.