The method of transshipment of spent filter in nuclear power plant

Abstract

The invention belongs to the technical field of the transferring of nuclear power plant and nuclear chemical radioactive waste filters, and discloses a method for transferring a nuclear power station waste filter. The method comprises following steps: hoisting a ground hatch cover by the use of a hoisting tool, and moving the ground hatch cover away by the use of a transport vehicle; placing a ground shielding device and a rotatable cover plate on the place above a ground steel box; moving an upper cover of a container and the rotatable cover plate away; placing a filter core retainer storage shielding barrel on the ground shielding device by the use of the hoisting tool; enabling a retainer gripper to enter the interior of the filter so as to grip a filter core retainer and lift the filter core retainer to the interior of the retainer storage shielding barrel; placing a filter core transferring device on a third transport vehicle; enabling the third transport vehicle to run to the place above the ground shielding device; enabling a lead cylinder on the outer layer of the ground shielding device to rise and cover the lower edge of a transport vehicle shielding barrel before grabbing the filter core; and then grabbing the filter core. The method is advantageous in that the automation degree is high, good shielding measures are employed, and the method takes short time.

Description

technical field [0001] The invention belongs to the technical field of replacing and transferring radioactive waste filters of nuclear power plants and nuclear chemical industries, and in particular relates to a method for transferring waste filters of nuclear power plants. Background technique [0002] Several radioactive water filters are installed in each unit of a nuclear power plant. The position of the water filter is generally located in the ground steel box below the ground. The main components of the filter include the ground hatch cover, The upper cover of the container, the filter element holder and the filter element, etc., wherein the ground hatch is flush with the ground. [0003] According to the regulations of nuclear power plants, the filter element needs to be replaced when it reaches a certain service time or the pressure difference reaches the set value, and when the contact dose rate of the waste filter element is greater than 2mSv / h, it needs to be plac...

AI Technical Summary

Problems solved by technology

The patent does not disclose specific operation methods such as the transportation method of the special tool, the operation method of grabbing the filter element, and the shielding measures during the transfer process. Since the filter of the nuclear power plant absorbs a large amount of radionuclides in the water, the requirements for radiation protection and operation safety are extremely high. High, those skilled in the art cannot directly use this process for the real transfer operation of nuclear power plant spent filter elements

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