KR910007771Y1 - Double structur's packing tool for radioactive waste matter - Google Patents

Abstract

No content.

Description

Radioactive waste packaging container with double structure

1 is a partial cutaway perspective view showing the overall configuration of the present invention.

Figure 2 is a cross-sectional view showing a combined state of the present invention.

* Explanation of symbols for main parts of the drawings

1: outer container 2, 7: adhesive

3: resin auxiliary container 4: container tip

5: lid member 6, 9: pressure-resistant discharge hole

8: sealing body 10: step

12: binding band

The present invention relates to a radioactive waste packaging container capable of safely storing radioactive waste, and in particular, to increase the structural strength of the steel container configured to the outside and to form a double container having impact resistance and water resistance of the inner plastic container, The present invention relates to a radioactive waste packaging container having a dual structure that suppresses harmful risks and more effectively prevents external leakage of radioactive waste caused by corrosion of an external container.

Often, radioactive waste that occurs in the liquid or solid state contains radionuclides, such as Co-60, Sr-90, Cs-137, etc., unlike ordinary wastes. : 5.2 years, Sr-90: 27.7 years, Cs-137: 30 years), and the long-term risks of radiation for 300 years continue, requiring thorough management after long-term resistance or disposal.

Therefore, steel drums are generally used for the storage or disposal of such wastes, but in the long term, the risk of leakage of radionuclides stored therein could not be ruled out because they are easily corroded to the container surface by external or internal moisture. The environmental pollution and crop damage as well as the drinking water pollution caused by the release of radionuclides have emerged as a major social problem.

Nuclear power plants, which currently emit a large amount of radioactive waste, are mainly used to solidify by mixing and solidifying the waste and cement inside the steel drums. Since the cement mixture or the stirrer causes damage, such as peeling of a part of the paint coating film that has arrived on the inner surface of the container during the stirring, corrosion of these radioactive wastes is accelerated by chemical reaction to these parts in contact with moisture. It is pointed out as a serious obstacle to long-term preservation.

The present invention has been made in order to solve the above problems, and has a purpose to provide a double packaging container having a structural strength and at the same time, and also the internal pressure by drilling a pressure-resistant discharge hole of a small diameter in the lid member There is another purpose to keep it constant.

Hereinafter, the present invention for achieving the above object will be described in detail with reference to the embodiments of the accompanying drawings.

1 is a perspective view of the entire separation in part of the present invention, Figure 2 is a cross-sectional view of the coupled state.

That is, the auxiliary container 3 of the resin material formed of a plastic material is firmly attached to the inside of the outer container 1 made of a conventional steel drum by the adhesive agent 2, and is integrally formed, and an upper surface of the resin material is sealed. The lid member 5 which has (8) is formed by the adhesive agent 7 in the unitary structure.

Then, the container body 1 and the lid member 5 are closed by the front end 4 of the auxiliary container 3 formed on the inner surface again and the stepped portion 10 around the sealing body 8, and then the binding van. It is to be fastened as Nad (12).

In addition, the pressure release holes 6 and 9 for preventing the increase of the internal pressure are drilled in one surface of the lid member 5 and the sealing member 8, respectively.

With the above configuration, the present invention provides a lid member 5 formed by covering and stacking a sealed body 8 such as a plastic resin, as shown in FIG. When the ends of the resin material is in contact with each other to provide a perfect sealing effect, it is possible to achieve a safe structure that does not penetrate water or air from the outside.

In addition, one part of the lid member 5 is formed with a double structure of the pressure-resistant discharge hole 9 drilled in the sealing body 8 and another pressure-resistant discharge hole 6 having a fine diameter in a position that deviates from each other. (1) During the long-term existence of radioactive waste solids (W) stored therein, it is possible to effectively prevent the increase in internal pressure that may occur when gas is generated due to the collapse of radioactive waste.

At this time, the internal pressure release holes 6 and 9 respectively drilled in the lid 5 and the sealing body 8 may be located at close distances to each other and exist as mutually sealed shapes, and the diameter or the internal pressure may be a reference pressure. If it exceeds, it is possible to prevent the penetration of air or water from the outside because it is a fine hole enough to leak the air inside.

As described above, the resin auxiliary container 3 and the sealing body 8 of the present invention are made of a plastic material, specifically, polyvinyl chloride (PVC), polystyrene (PS), polyethylene (PE), and polypropylene (PP). ) May be used, or may be a mixture of a plastic or raw plastic and waste plastic in a certain ratio.

In addition, in the method of manufacturing the auxiliary container 3 of the resin material on the inner surface of the outer container 1, the external container 1 is extruded or injected into a shape meeting the internal standard of the outer container 1 according to the above. Although described as an example of the configuration of attaching to the container 1 with an adhesive 2, the present invention is not limited to this, but also the present invention by a method of inserting the auxiliary container 3 of the resin material under the vacuum in the outer container (1) The purpose of the can be achieved, by inserting the containers of the dual structure under vacuum and then taken out under normal pressure so that the plastic can be adhered to the inside of the steel drum with sufficient force. Another manufacturing method may be to manufacture a container by laminating the above-mentioned plastic on an unprocessed iron plate, or by injecting a thermoplastic plastic powder into a proper thickness while rotating the outer pot 1 to add salt from the outside of the container. By the coating method, the above object can be effectively achieved.

According to the present invention described above, the packaging containers of radioactive wastes have a dual structure that differs in physical properties from each other so that the inner coating film is peeled off during mechanical or physical mixing during use, so that the steel sheet is not exposed to scratches. Even when used for a long time, the container and radioactive waste can be prevented from being contacted, and even if the steel container is partially corroded by external moisture, the auxiliary container and the sealing body of sufficient thickness are in contact with each other. It is very useful and practical that the leakage of oil can be prevented.

Claims (2)

An auxiliary container 3 of synthetic resin material is attached to the inside of the outer container 1 of a conventional steel drum by an adhesive 2, and a lid member 5 having a sealing body 8 on its upper surface is formed in a single structure. And a front end portion (4) of these inner containers (3) and a peripheral step (10) of the closure (8) are combined and then fastened with a binding band (12). 2. The dual structure according to claim 1, wherein the pressure relief holes 6 and 9 having a small diameter, which prevent the increase in the pressure inside the lid member 5 and the closure body 8, are respectively drilled at positions that deviate from each other. Having radioactive waste packaging container.