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Nuclear power plant failed desiccant mixed volume reduction solidification treatment method

A technology of curing treatment and desiccant, which is applied in the field of mixed volume reduction and curing treatment of failed desiccant in nuclear power plants, and can solve the problem that waste volume reduction treatment cannot be realized.

Active Publication Date: 2016-06-15
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
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AI Technical Summary

Problems solved by technology

It can be seen that the solidification of waste after the formula improvement is still a kind of volume-enhancing treatment, and the volume-reducing treatment of waste cannot be realized.

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the examples.

[0017] The invention starts from the principle of radioactive waste reduction and minimization management, and according to the physical characteristics and radioactive composition of the invalid desiccant, designs and studies the mixed volume reduction and solidification treatment technology of the invalid desiccant and boron-containing concentrated liquid.

[0018] In order to achieve waste volume reduction treatment and meet waste disposal safety requirements, the mixed solidification treatment technology needs to meet the following requirements: (1) Develop a mixed volume reduction solidification formula based on the mature cement solidification formula of the existing boron-containing concentrate in nuclear power plants ; (2) The mixed solidification formula can realize the volume reduction treatment of waste as a whole, that is, the volume containment rate of the mixed waste...

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Abstract

The invention relates to a radioactive waste solidification treatment technology, and specifically relates to a nuclear power plant failed desiccant mixed volume reduction solidification treatment method. According to the method, low-medium level failed molecular sieve desiccant produced during a heavy water reactor operation process and low-medium level radioactive boron-containing concentrate liquid are subjected to a mixed volume reduction treatment. The volume inclusion rate of the mixed solidified waste can reach 119.1-122.5%. According to the invention, a traditional solidification technology is adopted as a basis, and radioactive waste long-term stability can be realized. With the method, the performance of the prepared solidified body can satisfy related requirements of GB14569.1-2011, including compressive strength, impact resistance, freeze-thaw resistance, soak resistance and the like.

Description

technical field [0001] The invention belongs to the solidification treatment technology of radioactive waste, and in particular relates to a treatment method for nuclear power plant failure desiccant mixing volume reduction and solidification. Background technique [0002] The heavy water vapor recovery system is a unique system for heavy water reactor nuclear power plants. Its main function is to recover heavy water vapor and reduce the tritium level in the reactor building. Nuclear power plants usually use molecular sieve desiccants for tritium removal and other possible radioactive carrying treatments. On the one hand, desiccants that absorb radioactive contamination can be detritiated to make the main radioactive contamination levels including tritium meet the clearance standard limit . If the radioactivity level after treatment is still higher than the clearance limit, it needs to be managed as radioactive waste. [0003] The existing mature low- and medium-level radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/30
Inventor 郭喜良杨卫兵贾梅兰冯文东高超刘建琴刘伟安鸿翔柳兆峰
Owner CHINA INST FOR RADIATION PROTECTION
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