METHOD AND APPARATUS FOR DETECTING CHARGE AND/OR LOAD OF DRUM AND BURNUP OF NUCLEAR FUEL ELEMENT FOR PURIFYING/CENTRIFUGALLY SEPARATING MACHINE LOADED WITH RADIOACTIVE LIQUID FROM NUCLEAR INDUSTRYFACILITY

摘要

PURPOSE: To detect the amount of filling of the drum of a pure centrifugal separating machine by measuring a solid object contained in a liquid by a spectroscope. CONSTITUTION: A detector 26 ofγ-ray spectrometer 28 is provided in the region of a drum 6 of a pure centrifugal separation 2. The detector 26 is connected to an evaluation unit 30 to detect the amount of supplied liquid, the amount of deposited solid, and the amount of liquid from recordedγrays. When the pure centrifugal separating machine is loaded, the amount of supplied liquid can be detected by the measurement and evaluation of Cs-γrays byγray - spectrometer 28 and the evaluation unit. When the solid is deposited, rhodium - 106 -γrays inγ-ray spectrum grows, the amount of rhodium - 106 can be detected by the judgment of Y rays, and the amount of deposited solid can be detected from the amount.