Radioactive sludge transfer apparatus

A radioactive sludge transfer apparatus for transferring sludge stored in a first tank with supernatant solution to a second tank, comprising:

• a transfer body;
• a stir-transferer configured to blast the supernatant solution to the sludge thereby producing sludge solution in the one tank and transfer the sludge solution to the another tank;
• an attitude control float;
• a floating force control ballast tank;
• and
• a controller configured to remotely control the stir-transferer and the floating force control ballast tank,
• wherein:
• the stir-transferer, the attitude control float and the floating force controlling ballast tank are mounted respectively to the transfer body,
• the stir-transferer comprises:
• a suction pump configured to suck the sludge solution;
• a supernatant solution suction pump configured to suck the supernatant solution;
• and
• an injection nozzle configured to jet the supernatant solution sucked by the suction pump to the sludge thereby forming the sludge solution, the injection nozzle having freely controllable nozzle angle and a flow path switching valve,
• the sludge solution suction pump comprising suction ports including bottom suction ports and side suction ports which are opened or closed by an open/close device, and when the supernatant solution is jetted from the injection nozzle, the flow path switching valve is switched on the injection nozzle side, and when the sludge remaining inside the first tank is sucked out, the side suction ports are closed by the open/close device.