Device and method for detecting cracks of radioactive waste cement solidified body in waste drum
A radioactive waste and cement solidification technology, which is applied in the direction of using radiation for material analysis, etc., can solve the problems of complex sample preparation process, inability to timely feedback solidified body information and sampling, etc.
Active Publication Date: 2015-04-29
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
A device and method for crack detection of radioactive waste cement solidified bodies in waste barrels capable of real-time detection of solidified bodies, which solves the problem of inability to timely feed back solidified body information and complex sampling and sample preparation processes
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Embodiment 1
[0058] Embodiment 1: see figure 1 , figure 2 , a device for detecting cracks in solidified radioactive waste cement in a waste bin 4, comprising a conveyor belt 5 for transporting the waste bin 4;
[0059] The gamma-ray generating device 1 installed on one side of the conveyor belt 5 is used to generate gamma-rays; the gamma-ray generating device 1 includes a gamma-ray standard source 11, a biological shielding shell 12 and a source collimator 13, the Gamma ray standard source 11 is 10mCi 60 Co isotope standard source, used to produce gamma rays of 1.17MeV and 1.33MeV energy; The material of the source collimator 13 is lead, used to make gamma rays shoot out from the fan-shaped slit, and the biological shielding shell 12 Wrapped on the outer wall of the gamma ray standard source 11, the material is lead;
[0060] Installed on the other side of the conveyor belt 5, the gamma ray detector system 2 opposite to the gamma ray generator 1 is used to detect the gamma ray produced...
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The invention discloses a device for detecting cracks of a radioactive waste cement solidified body in a waste drum. The device comprises a conveyor belt, a gamma ray generator, a gamma ray detector system, an analysis and processing system and a feedback control system. The conveyor belt is used for conveying a to-be-tested waste drum; the gamma ray generator generates gamma rays which are acquired by the gamma ray detector system after being attenuated by the waste drum and then sent to the analysis and processing system so as to be analyzed. According to the device, the gamma rays are used for performing scan detection on the solidified body, whether the solidified body meets the solidification requirement is judged according to the porosity and the cracks, and the subsequent solidification process is controlled by use of the feedback control system; as a result, the problems of chemical detection lag of the solidified body, complex sampling and complex sample preparation process are solved, and whether the solidified body is satisfied can be judged very timely according to the porosity and the cracks; the device has the advantages of realizing full-automatic detection feedback and reducing human factor caused errors.
Description
technical field [0001] The invention relates to a radioactive waste cement solidified body detection system, in particular to a crack detection device and method for radioactive waste cement solidified body in a waste bucket. Background technique [0002] Cement solidification of radioactive waste is based on cement as the main inorganic gel material, mixed with pozzolan active admixture, additives and fibers to improve certain properties of the mixed slurry and cement stone, added water, and mixed with waste in a certain proportion , making use of the hydraulicity of cement and mixed materials to make the mixed slurry form a solidified body with certain strength and durability after a certain curing period. Because of its simple treatment process, no need for high temperature, good stability of solidified products, and low cost, it is widely used in the treatment of radioactive waste in nuclear power plants and other nuclear facilities. However, in the preparation process,...
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Inventor 杨剑波庹先国王洪辉成毅王磊刘明哲王琦标
Owner CHENGDU UNIVERSITY OF TECHNOLOGY