Large concrete container cutting, dismantling, and disposal suitability evaluation system and method

Abstract

The large concrete container cutting, dismantling, and disposal suitability evaluation system according to an embodiment of the present invention comprises: a vertical and horizontal cutting device for a large concrete container and a solidified material, the device being capable of vertically and horizontally cutting a concrete container and a solidified material; a cut block separation device for separating a solidified material block, a grounding concrete block, and an external container block from the cut container and the solidified material cut blocks produced by the vertical and horizontal cutting device for a container and a solidified material; and a suitable disposal device for determining self-disposal or disposal suitability for each of the solidified block, the grounding concrete block, and the external container block individually separated by the cut block separation device, the suitable disposal device enabling self-disposal or disposal when the self-disposal or disposal suitability is satisfied..

Description

System and method for cutting and dismantling large concrete containers and assessing their suitability for disposal

[0001] The present invention relates to a system and method for cutting and dismantling large concrete containers and for evaluating their disposal suitability, and more particularly, to a system and method for cutting and dismantling large concrete containers capable of effectively separating 200-liter drum-built waste, grouting concrete, and external concrete containers solidified with high-dose concentrated waste liquid cement through cutting, separation, and radionuclide analysis processes, and evaluating their disposal suitability.

[0002] In the radioactive waste storage facility, large concrete containers containing high-dose concentrated waste liquid are stored for long periods of time.

[0003] Inside the large concrete container, the concentrated waste liquid is cement-solidified in a 200-liter drum, and cement is grouted between the outer skin of the large concrete container and the 200-liter drum to form a large concrete wall with a thickness of 10 cm or more.

[0004] A large concrete container constructed in this manner is a composite structure, and the solidified body, which is the solidified body of the concentrated waste liquid solidified with cement in a 200-liter drum, may have a very high level of radioactive contamination, while the outer shell and large concrete walls of the large concrete container may have a minimal level of contamination that allows for self-disposal.

[0005] In order to dispose of solid waste and large concrete containers, the inventory of radionuclides in the internal waste must be assessed and their characteristics must be evaluated. Unlike solid waste, the characteristics evaluation must be easily conducted to ensure the disposal suitability of grouted concrete walls and external concrete containers, which have a low contamination level.

[0006] However, the large concrete container is a complex structure that is very large and complex, and thus there is a lack of devices and processes for assessing the inventory of radionuclides and evaluating their characteristics.

[0007] In addition, in order to assess the radionuclide inventory and characterize the embedded waste, it is necessary to separate the embedded waste in 200-liter drums with cement-solidified high-dose concentrated waste liquid, the grouted concrete walls, and the external concrete containers, but this separation process has the problem of increasing the risk of radiation exposure to workers.

[0008] The present invention was devised to solve such problems, and the purpose of the present invention is to provide a system and method for cutting and dismantling a large concrete container and evaluating its disposal suitability, which can automatically separate the 200-liter drum-built waste, grouting concrete wall, and external concrete container in which high-dose concentrated waste liquid is cement-solidified, and which can easily secure the disposal suitability or self-dispose of the grouting concrete wall and external concrete container with low contamination, and can easily perform a characteristic evaluation to secure the disposal suitability of the cement-solidified body of the built-in waste.

[0009] A large concrete container cutting and dismantling and disposal suitability evaluation system according to one embodiment of the present invention includes a large concrete container and solidified body vertical and horizontal cutting device capable of vertically and horizontally cutting a concrete container and a solidified body, a cutting block separating device for separating a solidified body block, a grounding concrete block, and an external container block from the container and solidified body cut blocks cut by the container and solidified body vertical and horizontal cutting device, and a suitable disposal device for judging self-disposal or disposal suitability for each of the solidified body blocks, grounding concrete blocks, and external container blocks individually separated by the cutting block separating device, and for self-disposing or disposing when self-disposal or disposal suitability is satisfied.

[0010] A method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to another aspect of the present invention may include a step of vertically or horizontally cutting and dismantling a composite structure composed of a solidified body of a large concrete container packaging a high-dose concentrated waste liquid, a concrete wall grouted between the solidified body and the container outer shell, and the container outer shell into concrete container and solidified body blocks having a predetermined size using vertical and horizontal cutting devices, a step of individually separating the solidified body blocks, the grouted concrete wall blocks, and the container outer shell blocks from the concrete container and solidified body blocks cut and dismantled by the vertical and horizontal cutting devices, and a step of evaluating the suitability for disposal and processing the solidified body blocks and the grouted concrete wall blocks, respectively.

[0011] A method for cutting and dismantling a large concrete container and assessing its suitability for disposal according to another aspect of the present invention includes a step of separately measuring surface dose rates for the separated solidified body blocks and the grouting concrete wall blocks, and a step of separately performing radionuclide analysis and radionuclide inventory evaluation for the separated solidified body blocks and the grouting concrete wall blocks by applying a scale factor utilizing gamma rays.

[0012] The step of evaluating the above disposal suitability and processing and disposing may include a step in which each evaluation is performed based on the respective measurement results obtained in the step in which the separate surface dose rate measurement is performed and the step in which the separate nuclide analysis and nuclide inventory evaluation are performed.

[0013] The cross-section of the large concrete container containing the high-dose concentrated waste liquid may be square or circular.

[0014] The step of individually separating the solidified block, the grouting concrete wall block, and the container outer skin block may be performed by separating the solidified block, the grouting concrete wall block, and the container outer skin block from the concrete container and the solidified block by applying energy through external vibration or low or high frequency application or by means of vibration and physical impact.

[0015] According to a system and method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention, it is possible to automatically separate waste inside a 200-liter drum in which high-dose concentrated waste liquid is solidified by cement, a grouted concrete wall, and an external concrete container, thereby reducing radiation exposure of workers during the separation process.

[0016] Furthermore, according to one embodiment of the present invention, a system and method for cutting and dismantling large concrete containers and assessing their suitability for disposal can effectively secure the suitability of concrete and external concrete containers with low contamination levels, or facilitate self-disposal. Furthermore, a characteristic evaluation can be readily performed to ensure the suitability for disposal of internal waste cement solidification.

[0017] Figure 1 is a block diagram showing the internal configuration of a large concrete container cutting and dismantling and disposal suitability evaluation system according to one embodiment of the present invention.

[0018] Figure 2 is a flowchart showing a method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention.

[0019] Figures 3 and 4 are conceptual diagrams each showing a method for cutting and dismantling a large concrete container according to one embodiment of the present invention.

[0020] Hereinafter, with reference to the attached drawings, an embodiment of the present invention will be described in detail so that those skilled in the art can easily implement the invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0021]

[0022] *Also, throughout the specification, whenever a part is said to "include" a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise specifically stated.

[0023] First, referring to FIG. 1, a large concrete container cutting and dismantling and disposal suitability evaluation system according to one embodiment of the present invention will be described in detail.

[0024] Figure 1 is a block diagram showing the internal configuration of a large concrete container cutting and dismantling and disposal suitability evaluation system according to one embodiment of the present invention.

[0025] As illustrated in FIG. 1, a large concrete container cutting and dismantling and disposal suitability evaluation system (100) according to one embodiment of the present invention comprises a large concrete container and solidified body vertical and horizontal cutting device (110) capable of vertically and horizontally cutting a large concrete container and solidified body, a cutting block separating device (130) for separating a solidified body block, a grounding concrete block, and an external container block from the container and solidified body cut blocks cut by the container and solidified body vertical and horizontal cutting device (110), a surface dose rate measuring device (150) for measuring a surface dose rate for the grounding concrete block and the external container block, a radionuclide analysis and radionuclide inventory evaluation device (170) for analyzing radionuclides for the solidified body blocks and evaluating the inventory for each radionuclide, and using the evaluation values ​​of the surface dose rate measuring device (150) and the radionuclide analysis and radionuclide inventory evaluation device (170), the solidified body block, the grounding concrete block, It may include a suitable disposal device (190) that determines self-disposal or disposal suitability for each external container block and, if self-disposal or disposal suitability is satisfied, self-disposal or disposal.

[0026] Now, with reference to FIGS. 2 to 4, a method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention will be described.

[0027] FIG. 2 is a flowchart showing a method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention, and FIGS. 3 and 4 are conceptual diagrams showing a method for cutting and dismantling a large concrete container according to one embodiment of the present invention, respectively.

[0028] As illustrated in FIG. 2, a method for cutting and dismantling a large concrete container and assessing suitability for disposal according to an embodiment of the present invention comprises cutting and dismantling a composite structure composed of a large concrete container (C) in which a high-dose concentrated waste liquid is packaged, a solidified body block (10) in which the concentrated waste liquid is cement-solidified in a 200-liter drum, a concrete wall block (30) grouted between the solidified body block (10) and an outer container (50), and the outer container (50) into a plurality of concrete containers and solidified body blocks (CB) having a predetermined size vertically or horizontally using a vertical and horizontal cutting device (110) (S110).

[0029] The solidified body block (10), grouting concrete wall block (30), and container outer skin block (50) cut and dismantled by the above vertical and horizontal cutting device (110) are individually separated (S120).

[0030] The step of individually separating the solidified body blocks (10), the grouting concrete wall blocks (30), and the container outer skin blocks (50) cut and dismantled by the vertical and horizontal cutting devices (110) may be performed by separating the solidified body blocks (10), the grouting concrete wall blocks (30), and the container outer skin blocks (50) from a plurality of concrete containers and solidified body blocks (CB) by external vibration, or by applying energy through low or high frequency application and using vibration and physical impact means from a plurality of concrete containers and solidified body blocks (CB).

[0031] Among the solidified body blocks (10), grouting concrete wall blocks (30), and container outer blocks (50) cut and dismantled by the above vertical and horizontal cutting devices (110), a surface dose rate measurement is performed on the cement solidified body blocks (10) inside the inner drum (S130), and a separate surface dose rate measurement is performed on the grouting concrete wall blocks (30) (S135).

[0032] Among the solidified body blocks (10), grouting concrete wall blocks (30), and container outer blocks (50) cut and dismantled by the above vertical and horizontal cutting devices (110), a radionuclide analysis and radionuclide inventory evaluation are performed on the cement solidified body blocks (10) inside the inner drum by applying a scale factor utilizing gamma rays (S140).

[0033] In addition, a separate radionuclide analysis and radionuclide inventory evaluation are performed on the separated grouting concrete wall block (30) among the solidified body block (10), grouting concrete wall block (30), and container outer shell block (50) cut and dismantled by the vertical and horizontal cutting device (110) by applying a scale factor utilizing gamma rays (S145).

[0034] According to a method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention, the suitability for disposal of the internal waste and the grouted concrete wall of a square or circular large concrete container that has been stored for a long period of time is evaluated (S150, S155) and can be treated and disposed of.

[0035] As illustrated in FIG. 3, a large concrete container (C) with a rectangular cross-section for long-term storage is cut into composite blocks of a predetermined size, i.e., a concrete container and a solidified body block (CB), after the solidified body block (10) of a 200-liter drum containing internal radioactive waste, a grouting concrete wall block (30) for fixing the drum, and an outer block (50) of the rectangular container, and then each is separated by vibration or external impact, and a customized nuclide, nuclide inventory, and characteristic evaluation are performed on each of the solidified body block (10), the grouting concrete wall block (30), and the outer block (50) of the container, so that process efficiency and waste disposal suitability can be secured.

[0036] In addition, as illustrated in FIG. 4, a large concrete container (C) with a circular cross-section for long-term storage is cut into composite blocks of a predetermined size, i.e., a concrete container and a solidified body block (CB), after the solidified body block (10) of a 200-liter drum containing internal radioactive waste, a grouting concrete wall block (30) for fixing the drum, and a square container outer block (50) are separated by vibration or external impact, and a customized nuclide, nuclide inventory, and characteristic evaluation are performed on each of the solidified body block (10), the grouting concrete wall block (30), and the container outer block (50), so that process efficiency and waste disposal suitability can be secured.

[0037] In this way, a large concrete container containing radioactive waste can be cut and dismantled by the vertical and horizontal cutting device (110) as shown in FIGS. 3 and 4, thereby being configured into a concrete container and a solidified body block (CB) that are easy to handle and manipulate.

[0038] In addition, the container outer block (50), the grouting concrete wall block (30), and the solidification body (50) are individually separated from the concrete container and the solidification body block (CB), and the disposal suitability can be secured through surface dose rate measurement, nuclide analysis, and nuclide inventory evaluation of each of the container outer block (50), the grouting concrete wall block (30), and the solidification body (50) based on a certain standard.

[0039] According to a system and method for cutting and dismantling a large concrete container and evaluating its suitability for disposal according to one embodiment of the present invention, it is possible to automatically separate waste inside a 200-liter drum in which high-dose concentrated waste liquid is solidified by cement, a grouted concrete wall, and an external concrete container, thereby reducing radiation exposure of workers during the separation process.

[0040] Furthermore, according to one embodiment of the present invention, a system and method for cutting and dismantling large concrete containers and assessing their suitability for disposal can effectively secure the suitability of concrete and external concrete containers with low contamination levels, or facilitate self-disposal. Furthermore, a characteristic evaluation can be readily performed to ensure the suitability for disposal of internal waste cement solidification.

Claims

1. A large concrete container and solidified body vertical and horizontal cutting device capable of cutting concrete containers and solidified bodies vertically and horizontally, A cutting block separating device for separating solidified body blocks, grounding concrete blocks, and external container blocks from the container and solidified body cutting blocks cut by the above container and solidified body vertical and horizontal cutting devices, A large concrete container cutting and dismantling and disposal suitability evaluation system including a suitable disposal device that determines self-disposal or disposal suitability for each of the solidified concrete blocks, grounding concrete blocks, and external container blocks individually separated by the above cutting block separation device, and self-disposes or disposes them if the self-disposal or disposal suitability is satisfied.

2. In paragraph 1, A surface dose rate measuring device that separately measures the surface dose rate for the above-mentioned grounding concrete blocks and external container blocks, A large concrete container cutting and dismantling and disposal suitability evaluation system further comprising a nuclide analysis and nuclide inventory evaluation device that analyzes nuclides for the above-mentioned solidified block and evaluates the inventory amount for each nuclide.

3. A step of vertically or horizontally cutting and dismantling a composite structure composed of a solidified body of a large concrete container containing high-dose concentrated waste liquid, a concrete wall grouted between the solidified body and the container outer shell, and the container outer shell into concrete container and solidified body blocks of a predetermined size using a vertical and horizontal cutting device; A step of individually separating the solidified body block, the grouting concrete wall block, and the container outer skin block from the concrete container and solidified body block cut and dismantled by the vertical and horizontal cutting devices, A method for cutting and dismantling a large concrete container and evaluating its suitability for disposal, including a step of evaluating the suitability for disposal and processing the solidified concrete block and the grouting concrete wall block, respectively.

4. In paragraph 3, A step in which surface dose rate measurements are performed separately for the separated solidified body block and the grouting concrete wall block, It includes a step of separately performing a radionuclide analysis and radionuclide inventory evaluation for the separated solidified body block and the grouting concrete wall block by applying a scale factor utilizing gamma rays. A method for cutting and dismantling a large concrete container and evaluating its disposal suitability, wherein the step of evaluating the disposal suitability and processing disposal includes a step of evaluating the separate surface dose rate and a step of evaluating the separate nuclide analysis and nuclide inventory based on the respective measurement results obtained in the step of evaluating the separate nuclide inventory.

5. In paragraph 3, A method for cutting and dismantling a large concrete container having a square or circular cross-section and evaluating the suitability for disposal of the high-dose concentrated waste liquid packaged above.

6. In paragraph 3, A method for cutting and dismantling a large concrete container and assessing suitability for disposal, wherein the step of individually separating the solidified body block, the grouting concrete wall block, and the container outer skin block is performed by applying energy through external vibration or low-frequency or high-frequency application or by means of vibration and physical impact.

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