Composite nanosecond laser decontamination device and method for radioactive decontamination

Abstract

The invention discloses a composite nanosecond laser decontamination device and method for radioactive decontamination. The cooperative decontamination method comprises the following steps: driving anoptical module of the composite nanosecond laser decontamination device to perform scanning type stepping movement above a to-be-decontaminated workpiece, and keeping a preset time interval between two adjacent stepping movements, after each stepping movement, firstly starting a high-efficiency nanosecond laser, stopping the high-efficiency nanosecond laser after running for a first time period,starting an ultra-high-energy nanosecond laser after running for a second time period, stopping the ultra-high-energy nanosecond laser after running for a third time period, and stopping the ultra-high-energy nanosecond laser until the high-efficiency nanosecond laser is started next time at an interval of a fourth time period; and making the optical module perform stepping movement according to the steps until the upper surface of the to-be-decontaminated workpiece is scanned. The two paths of lasers cooperate at intervals for composite operation, dirt attached on a surface to be cleaned canbe removed after once scanning, deep peeling and decontamination of a radioactive member can be completed, and the decontamination efficiency is improved.

Description

technical field [0001] The invention relates to the field of nuclear industry decontamination, in particular to a composite nanosecond laser decontamination device and decontamination method for radioactive decontamination. Background technique [0002] China is one of the countries with the largest scale of nuclear facility construction in the world. The country vigorously promotes the strategic adjustment of energy structure and focuses on the development of nuclear energy. However, the research and development of new technologies related to the decommissioning of nuclear facilities is relatively lagging behind. For a long period of time in the future, my country may Faced with the increasing decommissioning activities of civil nuclear and radiation facilities, the radioactive waste generated at that time needs to be safely removed and managed, so the research on decommissioning technology of nuclear facilities has become urgent. At the same time, the unique radioactive att...

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Problems solved by technology

Traditional decontamination methods such as mechanical grinding, chemical dissolution, liquid strong flushing and ultrasound have limitations such as low efficiency, environmental pollution, and poor precision, and cannot meet the requirements of efficient, accu...

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