Loading container for storing radioactive waste drum and method for collecting sample of internal waste therefrom

Abstract

The present invention provides: a radioactive waste drum in which high-dose concentrated waste liquid is contained; a loading container for containing a radioactive waste drum, the loading container enabling collection of a sample of internal waste in order to evaluate physicochemical and radiological properties of the concentrated waste liquid in the loading container in which the drum is stored; and a method for collecting a sample of internal waste therefrom. According to the present invention, the loading container for storing a radioactive waste drum includes a radioactive waste drum in which radioactive waste is contained, and a concrete loading container storing the radioactive waste drum. The concrete loading container includes a sample collecting unit for collecting a sample of concentrated waste liquid contained in the radioactive waste drum. The sample collecting unit is configured as a pipe having a predetermined length and passing through the concrete loading container and the radioactive waste drum, and has a gradient.

Description

Loading container for storing radioactive waste drums and method for collecting samples of internal waste therefrom

[0001] The present invention relates to a radioactive waste drum containing high-dose concentrated waste liquid, a loading container for storing the drum containing the drum, and a method for collecting a sample of the internal waste from the loading container for collecting the sample of the internal waste to evaluate the physicochemical and radiological properties of the concentrated waste liquid.

[0002] Radioactive waste, a byproduct of nuclear power, is radioactive waste discharged from nuclear power plants and research laboratories. This radioactive waste is divided into high-level radioactive waste and low- and intermediate-level radioactive waste, which refers to the residue remaining after liquid waste treatment and various parts, including clothing and gloves, used by operators and maintenance personnel. High-dose concentrated waste liquid is stored in radioactive waste drums, which are then temporarily stored in concrete containers. This concentrated waste liquid solidifies, and its physicochemical and radiological properties need to be evaluated. Safely collecting high-dose concentrated waste liquid samples from radioactive waste drums and safely handling and handling these large, heavy concrete containers pose a challenge. However, adequate solutions to these challenges remain.

[0003] In addition, there is a problem in that there is a need to prevent the waste inside the concrete container from leaking out when transporting the concrete container after collecting a sample of the concentrated waste liquid inside the concrete container, but this is not sufficiently addressed.

[0004] Accordingly, the present invention has been proposed to solve the above-mentioned problems, and the purpose of the present invention is to provide a loading container for storing radioactive waste drums capable of safely collecting and repeatedly collecting samples of high-dose concentrated waste liquid, and a method for collecting samples of internal waste therefrom.

[0005] In addition, another purpose of the present invention is to provide a loading container for storing a radioactive waste drum, which can safely handle a large, heavy concrete container after collecting a sample of solidified high-dose concentrated waste liquid or prevent leakage of the internal waste during movement, and a method for collecting a sample of the internal waste from the container.

[0006] In order to achieve the above object of the present invention, the present invention includes a radioactive waste drum containing radioactive waste, and a concrete loading container containing the radioactive waste drum,

[0007] The above concrete loading container is provided with a sampling section for collecting a sample of the concentrated waste liquid contained in the radioactive waste drum, and the sampling section is formed by a pipe having a constant length that penetrates the concrete loading container and the radioactive waste drum, and provides a loading container for storing radioactive waste drums that forms a gradient.

[0008] It is preferable that the above sample collection section has a gradient that slopes upward from the center toward the outside.

[0009] It is preferable that an insert for transporting the concrete container be fitted into the above sample collection section.

[0010] It is preferable that the above insert and the concrete container are connected to each other by a fixing anchor.

[0011] In addition, the present invention provides a method for collecting a sample of internal waste from a radioactive waste drum, the method comprising the steps of forming a sampling section in the form of a pipe so as to have a gradient from the center of the radioactive waste drum to the outside of the concrete container containing the radioactive waste drum, collecting a sample of radioactive waste through the sampling section after the step of forming the sampling section, closing the sampling section by inserting a transport insert into the sampling section after the step of collecting the sample, and fixing the transport insert to the concrete container with a fixing anchor after the step of closing the sampling section.

[0012] The present invention provides a radioactive waste drum containing high-dose concentrated waste liquid and a concrete container containing the radioactive waste drum with a gradient-shaped sampling section, thereby safely and repeatedly collecting samples of high-dose concentrated waste liquid and enabling physicochemical and radiological characteristic evaluations to be performed.

[0013] In addition, the present invention can safely operate a large, heavy concrete container or prevent leakage of the internal waste during movement after collecting a sample of the concentrated waste contained in a radioactive waste drum and fixing an insert to a sampling section to collect a sample of the solidified high-dose concentrated waste.

[0014] FIG. 1 is a schematic diagram showing the interior of a concrete container containing a radioactive waste drum, cut vertically, to illustrate an embodiment of the present invention.

[0015] FIG. 2 is a schematic diagram showing the interior of a concrete container containing a radioactive waste drum, cut horizontally, to illustrate an embodiment of the present invention.

[0016] FIG. 3 is a schematic diagram showing a concept in which a transport insert is installed in a concrete container to explain an embodiment of the present invention.

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various other forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description have been omitted for clarity of description, and the same reference numerals will be assigned to identical or similar components throughout the specification.

[0018] Figure 1 is a schematic diagram illustrating an embodiment of the present invention, showing a loading container for storing radioactive waste drums.

[0019] The loading container for storing a radioactive waste drum of the present invention includes a radioactive waste drum (100), a concrete loading container (200), and a sample collection unit (300).

[0020] The radioactive waste drum (100) accommodates radioactive waste, which is a high-dose concentrated waste liquid, and may be made of a cylindrical steel material. The high-dose concentrated waste liquid accommodated in the radioactive waste drum (100) may solidify during temporary storage in the radioactive waste drum (100).

[0021] The concrete loading container (200) is a concrete container that can accommodate a radioactive waste drum (100).

[0022] The sampling unit (300) may be formed in the form of a pipe penetrating the radioactive waste drum (100) and the concrete loading container (200), as illustrated in FIGS. 1 and 2. This sampling unit (300) may have a gradient whose height increases from the center of the radioactive waste drum (100) toward the outside of the concrete loading container (200). The inner end of the sampling unit (300) is a sampling area. This sampling unit (300) can easily collect a sample of the solidified concentrated waste liquid from the outside, and has a structure that slopes upward from the center toward the outside, thereby blocking the concentrated waste liquid inside the radioactive waste drum (100) from being discharged to the outside. That is, the sampling unit (300) of the embodiment of the present invention can easily collect a sample of the solidified body of the internal waste by utilizing the side of a large, square concrete container. Accordingly, the sampling section (300) is formed as a pipe with the inner side inclined toward the lower side compared to the outer side, thereby preventing the internal waste from being detached due to gravity and movement, thereby preventing the spread of contamination with radioactive materials, and easily achieving a reduction in radiation exposure of workers.

[0023] Meanwhile, an insert (400) for transporting a concrete loading container (200) may be fitted into the sampling unit (300). The insert (400) may temporarily close a space, such as a pipe, formed by the sampling unit (300). The insert (400) may have a separate, detachable isolation device (not shown) disposed therein to prevent external diffusion of the internal waste. In addition, if necessary, the detachable isolation device may be removed and the insert (400) may be removed to additionally collect samples of the internal waste. This embodiment of the present invention can obtain comparable data by collecting samples at regular time intervals to evaluate the physicochemical and radiological characteristics of the solidified concentrated waste liquid.

[0024] And the insert (400) can be fixed to the concrete loading container (200) by a fixing anchor (411). The fixing anchor (411) can be a metal structure. When the insert (400) is fixed to the concrete loading container (200) by the fixing anchor (411) in this way, the large concrete loading container (200) can be easily transported. In particular, when the insert (400) of the embodiment of the present invention is fixed to the concrete loading container (200) by the fixing anchor (411), the internal waste can be prevented from falling out when transporting the concrete loading container (200), and convenience of the work process can be achieved.

[0025] In an embodiment of the present invention, which is performed in this manner, a method for collecting a high-dose concentrated waste liquid or solidified waste sample from a radioactive waste drum (100) accommodated in a concrete loading container (200) is as follows.

[0026] First, a sampling section (300) is formed by forming a gradient from the outside to the inside of the concrete loading container (200). At this time, the sampling section (300) is formed in the form of a pipe by penetrating the concrete loading container (200) and the radioactive waste drum (100) so that the outside has a higher gradient than the inside. The sampling section (300) is formed to penetrate the inner central portion of the radioactive waste drum (100), and two or more can be formed at corresponding positions.

[0027] And, using this sampling unit (300), a sample of high-dose concentrated waste liquid or solidified substance inside the radioactive waste drum (100) is collected. The sample collected in this way is used for physicochemical and radiological characteristic evaluation.

[0028] And after collecting a sample from the radioactive waste drum (100), the insert (400) is inserted into the sample collection section (300) to close the space of the sample collection section (300). After closing the space of the sample collection section (300), the insert (400) is fixed to the concrete loading container (200) with a fixing anchor (411). Then

[0029] After the step of collecting the sample, a transport insert is inserted into the sampling section to close the sampling section, and the concrete loading container (200) can be easily transported or a necessary process can be performed. If it is necessary to collect the solidified waste sample inside the radioactive waste drum (100) again after a certain period of time, the fixing anchor (411) that secures the insert (400) can be removed, the insert (400) can be removed, and a sample can be collected again through the sampling section (300).

[0030] This embodiment of the present invention can compare the physicochemical and radiological characteristics of the solidified concentrated waste liquid by repeatedly collecting samples of the solidified waste inside the radioactive waste drum (100) at regular intervals.

[0031] Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that this also falls within the scope of the present invention.

Claims

1. Radioactive waste drums containing radioactive waste, and Concrete loading container containing the above radioactive waste drum Including, The above concrete loading container Equipped with a sampling unit for collecting a sample of the concentrated waste liquid contained in the above radioactive waste drum, The above sample collection section A loading container for storing radioactive waste drums, which is formed by a pipe having a constant length and penetrating the concrete loading container and the radioactive waste drum, and which forms a gradient.

2. In claim 1, The above sample collection section A loading container for storing radioactive waste drums that slopes upward from the center toward the outside.

3. In claim 1, In the above sample collection section A loading container for storing radioactive waste drums, into which an insert for transporting the above concrete container is fitted.

4. In claim 3, The above insert and the above concrete container A loading container for storing radioactive waste drums, joined together by anchors for fixing.

5. A step of forming a pipe-shaped sampling section in a concrete container containing a radioactive waste drum so that the concrete container has a gradient from the center of the radioactive waste drum to the outside of the concrete container. A step of collecting a sample of radioactive waste through the sample collection unit after the step of forming the sample collection unit, After the step of collecting the sample, a step of inserting a transport insert into the sample collection unit and closing the sample collection unit, and After the step of closing the above sample collection section, the step of fixing the transport insert to the concrete container using a fixing anchor. A method for collecting samples of internal waste from a radioactive waste drum containing .

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