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Method and structure for rock cavern disposal of low and intermediate level radioactive waste

A radioactive waste, low-level technology, applied in the direction of radioactive purification, nuclear engineering, etc., can solve the problems of low utilization rate of disposal roadway space, waste of space, increase of processing costs, etc., to achieve radiation protection, improve economy, improve space The effect of utilization

Active Publication Date: 2021-09-24
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in foreign countries, during the operation of rock cave disposal, the waste is generally placed in the lower area of ​​the disposal roadway by a numerically controlled crane, and the upper area of ​​the disposal roadway is directly backfilled after the disposal of the disposal roadway is completed, which will cause large waste of space, resulting in a low space utilization rate of the disposal roadway, so that the disposal of the same amount of radioactive waste requires more disposal sites, increasing the cost of treatment

Method used

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  • Method and structure for rock cavern disposal of low and intermediate level radioactive waste
  • Method and structure for rock cavern disposal of low and intermediate level radioactive waste
  • Method and structure for rock cavern disposal of low and intermediate level radioactive waste

Examples

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Embodiment 1

[0059] like Figure 1-Figure 5 As shown, the present embodiment discloses a method for disposal of low- and intermediate-level radioactive waste in rock caves, including the following steps:

[0060] S1. Set up a disposal roadway in the underground cavern, and set up cells in the lower part of the disposal roadway. The specific steps are as follows:

[0061] S101, setting a disposal roadway 40 . The treatment lanes 40 may be one row or multiple rows. In this embodiment, multiple rows of treatment lanes 40 are preferably provided.

[0062] Specifically, according to the processing volume requirements of low- and intermediate-level radioactive waste, calculation and simulation are performed to select suitable existing abandoned mine shafts, artificial caverns, and natural caverns as disposal caverns for low- and intermediate-level radioactive waste. A plurality of rows of disposal roadways 40 are arranged in parallel in the cavern for stacking low and intermediate level radioa...

Embodiment 2

[0106] like Figure 1-5 As shown, this embodiment discloses a structure for disposal of low- and intermediate-level radioactive waste in rock caves, which can be used in the method in Embodiment 1.

[0107] The structure includes a cave, and a disposal roadway 40 is arranged in the cavern, and a cell 50 is arranged at the lower part of the disposal roadway 40, and the cell 50 is used for placing intermediate-level radioactive waste and low-level radioactive waste, intermediate-level radioactive waste and low-level radioactive waste They are placed sequentially in the cell 50 from bottom to top; the upper part of the disposal roadway 40 is used to place very low level radioactive waste, and the very low level radioactive waste is placed on the top plate 53 of the cell in sequence.

[0108] Further, the number of the treatment lanes 40 is multiple rows, and the multiple rows of disposal lanes 40 are arranged in parallel in the cave; each row of disposal lanes 40 includes a plura...

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Abstract

The invention discloses a method for disposing of low- and medium-level radioactive waste in rock caves, which includes the following steps: S1, setting up a disposal roadway in an underground cavern, and setting a unit cell at the lower part of the disposal roadway; S2, disposing the radioactive waste according to the radioactivity The level of radioactive waste is divided into three levels, which are medium-level radioactive waste, low-level radioactive waste, and very low-level radioactive waste. In the cells of the disposal roadway, the very low level radioactive waste is placed on the top of the cells of the disposal roadway until the disposal roadway is filled; S3, the disposal roadway is backfilled and sealed. The invention also discloses a structure for disposal of low and medium level radioactive waste in rock caves. The invention can effectively improve the space utilization rate of rock cave disposal.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to a method and structure for disposal of low- and medium-level radioactive waste in rock caves. Background technique [0002] Nuclear power plants will generate a large amount of radioactive waste. Compared with high-level radioactive waste, although low- and medium-level radioactive waste has a smaller proportion of radioactive activity, it occupies a larger volume share. The treatment of low- and medium-level radioactive waste requires Take up a lot of space. According to the requirements of Article 40 of the "Nuclear Safety Law of the People's Republic of China" that came into effect on January 1, 2018, low- and medium-level radioactive wastes are disposed of near the surface or at medium depths in places that meet nuclear safety requirements stipulated by the state. [0003] At present, my country's existing disposal sites for low- and intermedi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F9/36
CPCG21F9/36
Inventor 夏加国王旭宏杨球玉吕涛侯伟康宝伟李昶李星宇郑轩
Owner CHINA NUCLEAR POWER ENG CO LTD
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