Radionuclide removal method and radionuclide removal system

摘要

PROBLEM TO BE SOLVED: To provide a radioactive nuclide removal system capable of accurately predicting a life of an absorption device in which an absorption agent is filled.SOLUTION: A radioactive nuclide removal system 1 comprises a life prediction system 2. A pH of a radioactive waste liquor to be supplied to an absorption tower 19 which is measured by a pH meter 16, a flow rate of the radioactive waste liquor measured by a flow meter 18, a pH of a waste liquor discharged from the absorption tower 19 which is measured by a pH meter 17, and a radioactive nuclide concentration obtained by a radioactive ray detection signal processor 15 based on an output signal from a radioactive ray detector 14 which detects the radioactive ray from the radioactive waste liquor, are input in the life prediction system 2. The life prediction system 2 obtains a remaining capacity of absorbing the radioactive nuclide of the absorption tower 19 based on respective pH measured by the pH meter 16, 17, and the flow rate supplied to the absorption tower 19, and predicts the life of the absorption tower 19 based on the remaining capacity.SELECTED DRAWING: Figure 1