POSTIRRADIATION EXAMINATION OF KORI-1 NUCLEAR-POWER-PLANT FUELS

Full size fuels discharged from Kori-1 PWR nuclear power plant have be en subjected to postirradiation examination. The fuels under investiga tion were irradiated for one- to four-reactor cycles. Nondestructive e xamination and dismantling of the fuel assemblies have been conducted in the pool of the postirradiation examination facility (PIEF) of Kore a Atomic Energy Research Institute. Subsequently nondestructive and de structive examinations of fuel rods have been performed in the hot cel ls of the PIEF. An evaluation of fuel burnup behaviors was based on th e postirradiation examination data and the nominal design values. The results did not show any evidence of abnormalities in the fuel integri ty.