APPARATUS FOR DRYING SPENT NUCLEAR FUEL BASED ON EVALUATION OF DRYING CHARACTERISTICS OBTAINED FROM GAS SPECTROSCOPY, AND CONTROL METHOD THEREOF

摘要

There is provided an apparatus for drying a spent nuclear fuel based on evaluation of drying characteristics obtained from gas spectroscopy in a drying operation technology of removing moisture from a spent nuclear fuel cladding and a canister (storage container) to store the spent nuclear fuel in a dry state, in which a parameter of drying operation characteristic is extracted from a signal outputted from a gas spectroscopy that directly measures a hot non-reactive gas discharged from a gas outlet port of the canister loaded with a spent nuclear fuel, the signal is inputted as a parameter value for drying operation to execute the drying operation, and if the signal outputted from the gas spectroscopy is below a preset value, it is determined the drying of the canister is completed, so that the drying operation is over.