Laser decontamination and recovery device for plate type heat exchange fins of PTR system of nuclear power station

Abstract

The invention discloses a laser decontamination and recovery device for plate type heat exchange fins of a PTR system of a nuclear power station. The laser decontamination and recovery device comprises a conveying belt, an adsorption device, a decontamination operation room and a turnover device, wherein the adsorption device is used for conducting loading and unloading operation on the conveyor belt; a decontamination operation table and an execution mechanism which is arranged near the decontamination operation table and can move freely are arranged in the decontamination operation room, andthe execution mechanism comprises a dust hood and further comprises a laser cleaning gun, an alpha / beta surface pollution detector and a dust collector which are all arranged in the dust hood; and the turnover device is used for turning over the upper and lower surfaces of the heat exchange fins received from the conveyor belt and then conveying the heat exchange fins to the conveyor belt. According to the laser decontamination and recovery device, radioactive substance detection can be carried out on a to-be-treated material under the condition that the to-be-treated material is not moved every time when laser decontamination operation is carried out until it is confirmed that radioactive substances on the to-be-treated material are completely removed, so cross contamination posed to workers is avoided; and through the arrangement of the turnover device, the whole decontamination treatment process does not need manual participation.

Description

technical field [0001] The invention relates to the technical field of nuclear material purification, in particular to a laser decontamination and recovery device for plate heat exchangers of a nuclear power plant PTR system. Background technique [0002] China is one of the countries with the largest scale of nuclear facility construction in the world. At this stage, the country is vigorously promoting the strategic adjustment of energy structure, and nuclear energy has been focused on development as a clean energy. However, with the rapid development of nuclear energy, the resulting accumulation of radionuclides on the surface of nuclear facilities needs to be solved urgently. At present, the following problems generally exist in the decontamination process for nuclear facilities: 1. The amount of secondary waste produced by traditional decontamination methods such as sandblasting, chemical, manual grinding, and high-pressure water washing is relatively large, and nuclear ...

AI Technical Summary

Problems solved by technology

At present, the following problems generally exist in the decontamination process for nuclear facilities: 1. The amount of secondary waste produced by traditional decontamination methods such as sandblasting, chemical, manual grinding, and high-pressure water washing is relatively large, and nuclear facilities will cause pollution The decontamination effect is not ideal; 2. During the operation, the staff needs to be in contact with the materials to be treated for many times. Therefore, the relevant staff have a relatively high risk of exposure to radiation; 3. For the treated nuclear facilities, It needs to be transported to the testing workshop outside the decontamination workshop for secondary testing. If it fails to meet the standard, it needs to be decontaminated and cleaned again. This will not only increase the workload of workers, but also easily dispose of radionuclides on nuclear facilities Residues on conveying equipment considered clean, causing cross-contamination of workers

[0003] In summary, the unique radionuclide deposition phenomenon and complex radionuclide deposition types on the surface of nuclear facilities put forward many special requirements for related removal processes and equipment. Traditional nuclide removal processes and equipment have been difficult to meet the growing radioactive Nuclide Removal Requirements

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