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Method and system for detecting and classifying radioactive solid waste

A technology of solid waste and classification methods, applied in radiation measurement, X-ray energy spectrum distribution measurement, X/γ/cosmic radiation measurement, etc., can solve the problems of disordered waste management, capital and time consumption, and huge, etc. Achieve the effect of improving the ability of radioactive solid waste treatment, disposal and control

Active Publication Date: 2018-08-24
深圳市利美泰克自控设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the above-mentioned nuclear facilities with such a huge volume and weight, traditional methods cannot quickly and effectively identify the pollution level of waste, resulting in disordered waste management, and the time consumption of analysis and detection is also huge.
[0006] For contaminated soil, also due to the lack of technical means for rapid detection and classification of radioactive solid waste pollution levels, the traditional method of uniform barreling is usually used, or the construction of large-scale very low-level radioactive waste collection sites for disposal, which consumes a lot of money and time. huge

Method used

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  • Method and system for detecting and classifying radioactive solid waste
  • Method and system for detecting and classifying radioactive solid waste
  • Method and system for detecting and classifying radioactive solid waste

Examples

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Effect test

Embodiment 1

[0052] For general materials, the detection and classification system mainly includes: a dose level radiation detection device 101 , an automatic delivery device 103 and a control device 201 .

[0053] Such as figure 1 As shown, the dose level radiation detection device 101 is used to detect the surface dose level of radioactive solid waste, and the device includes a plurality of replaceable dose level radiation detectors 102, such as scintillator detectors, semiconductor dose detectors, β Detectors, neutron detectors and other radiation detectors with different dose levels to achieve effective detection of radioactive solid waste of different radiation types. In actual use, according to the type of polluting nuclide in radioactive solid waste, the corresponding radiation dose level radiation detector can be selected and installed.

[0054] The dose-level radiation detectors 102 constituting the dose-level radiation detection device 101 are respectively arranged above the autom...

Embodiment 2

[0074] For radioactively polluted sandy soil, the specific application method and steps of the detection and classification system are slightly different from those in Example 1.

[0075] Most of the polluting nuclides in radioactively polluted sand and soil are mainly concentrated in soils with small particle size and strong adsorption capacity, while large-grained sand and gravel have poor adsorption capacity for polluting nuclides. Large-grained sand and gravel can be backfilled as exempt waste, which can greatly save the treatment cost of polluted sand and soil. Based on the above principles, the detection and classification system of the present invention is also equipped with a mechanical screening device 107 at the front end of the automatic conveying device 103, and the device passes small particles and large particle sands out of the small particle sands through a screener with a suitable aperture size. Feed port 108 and large particle sand discharge port 109 are scre...

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Abstract

The invention belongs to the technical field of solid waste treatment, and discloses a radioactive solid waste detecting and classifying method. The method comprises the steps of: measuring a surface dose level, a pollution nuclide type and a radioactive specific activity of a radioactive solid waste sample; obtaining a fitting curve of the dose level and the radioactive specific activity, building a function relation of the two, and determining a dose limiting value range of the radioactive solid waste in a different-pollution-grade state; measuring a dose level of the radioactive solid waste; and comparing the dose level of the radioactive solid waste with the dose limiting value range thereof in the different-pollution-grade state, judging the pollution grade of the radioactive solid waste, and classifying and collecting the radioactive solid waste. The method compares the dose level of the radioactive solid waste with the dose level limiting value range through building the relation between the radioactive solid waste pollution grade and the dose level limiting value range, so that the pollution grade can be quickly judged, the classification and the collection are realized, and the treatment and management capacity of the radioactive solid waste is greatly promoted.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to the detection and classification of radioactive solid waste. Background technique [0002] Radioactive solid waste mainly exists in nuclear power plants, decommissioned nuclear facilities and contaminated soil. According to the pollution level, it is mainly divided into exempt waste, low-level waste, intermediate-level waste, high-level waste and alpha waste. Wastes of different pollution levels need to be treated in different ways. Therefore, radioactive solid waste is collected and sorted. Pretreatment becomes a very important part of the treatment process. [0003] However, in the domestic decommissioning of nuclear facilities and the treatment and disposal of three wastes, there is no corresponding reference technical standard for the pretreatment process of radioactive solid waste, although radiation monitoring personnel will use various portable dosimeters to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/346G01T1/02G01T1/178G01T1/38
CPCB07C5/346B07C2501/0054G01T1/02G01T1/178G01T1/38
Inventor 彭永新
Owner 深圳市利美泰克自控设备有限公司
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