CRITICALITY CONTROL METHOD FOR SOLUTION NUCLEAR FUEL

摘要

PURPOSE:To directly control the criticality of solution nuclear fuel based on the layout of a neutron detector and the counting rate of the neutron detector. CONSTITUTION:The water phase of a stock solution containing nuclear fuel is fed into a column 1 from a water phase inlet pipe 6, and the organic phase of an extracting solvent is fed from an organic phase inlet pipe 8. In a pulse column extracting a solution while a pulsation is applied from a pulse generator 11, the layout of a neutron detector capable of determining the concentration distribution and the plutonium accumulation is determined in consideration of the plutonium concentration distribution from the analyzed result of the solution extraction simulation code of the pulse column. The counting rate of a neutron detector is used and the reverse multiplication method and the distribution pattern method are applied to control the criticality of solution nuclear fuel.