JP5936256B2 - Radioactive waste storage container - Google Patents

Description

  The present invention relates to a radioactive waste storage container, and more particularly to a small radioactive waste storage container having excellent radioactivity shielding properties.

  Currently, flexible container bags, concrete containers, drums, and the like are used as radioactive waste storage containers. A flexible container bag, as represented by so-called sandbags, is lightweight and excellent in portability and easy to handle, but it is made of a woven fabric made of chemical fibers such as polyethylene and polypropylene, and shields radioactivity. I can't. Therefore, when radioactive waste is stored in a flexible container bag, it is not preferable to leave it on the ground, and it is necessary to bury it in the ground in a temporary storage site or an intermediate disposal site.

Concrete containers have excellent radioactivity shielding properties, but are easy to increase in size and weight and have poor portability. For example, the radioactive waste storage container described in Patent Document 1 is a reinforced concrete square storage container having a storage space volume of 1 m ³ or more for storing radioactive pollutants temporarily or in the short to medium term. A reinforced concrete container main body with a top opening formed integrally with the bottom and side walls, a reinforced concrete lid for covering the opening, and a plurality of connections for fixing the lid to the container main body A plate is provided, and the minimum thickness of the bottom, side wall, and lid of the container body is 13 to 18 cm.

  A drum can is a metal can generally having a volume of 200 liters or more, and is smaller and lighter than the concrete container described above, but is inferior in radioactivity shielding. Therefore, as described in Patent Document 2, a structure in which a concrete layer is formed on the inner side of a drum can to improve radioactivity shielding has already been proposed. The radioactive waste storage container described in Patent Document 2 is attached to an upper surface of a heavy concrete plate material including a reinforcing bar by connecting a steel plate for electromagnetic adsorption and a plurality of hook bolt locking nuts to the reinforcing bar. The inner lid is fitted into an opening of a drum can having a lining layer made of heavy concrete.

Utility Model Registration No. 3173433 Japanese Utility Model Publication No. 61-36599

  In the concrete container described in Patent Document 1, although a large storage volume can be ensured, it is increased in size and weight, so that it becomes difficult to transport to a location close to a residential area where hot spots are generated. End up. Also, since the concrete lid is heavy, it cannot be easily opened and closed, and it must be left with the lid removed until the container is full. The radioactivity from the waste cannot be effectively shielded. Furthermore, if the container is left open, rainwater can easily enter the container, limiting the amount of radioactive waste, or overflowing rainwater and diffusing radioactive materials.

  In addition, the drum lined with concrete described in Patent Document 2 has an inner lid and an outer lid, and has a double lid structure, but because the inner lid is made of concrete, Therefore, the structure is based on the assumption that it is moved by a crane (for example, an inner steel plate or a hook bolt locking nut is arranged on the inner lid), and the drum can is easily opened and closed. I can't. Therefore, the problem similar to the concrete container mentioned above arises. Furthermore, a general drum can has a capacity of about 200 liters, and has a smaller storage capacity than a concrete container, and further, the storage capacity is further reduced because concrete is lined inside. There is also a problem.

  The present invention has been devised in view of the above-described problems, and an object of the present invention is to provide a radioactive waste storage container that is small in size and excellent in portability and excellent in radioactivity shielding properties.

According to the present invention, a radioactive waste storage container capable of storing radioactive waste and shielding radioactivity, wherein the drum can forms the radioactive waste storage portion, and the side peripheral portion and the bottom portion of the drum can. A concrete covering layer covering the outer surface of the drum, an inner lid covering the upper portion of the drum can, a fixing means for fixing the inner lid to the drum can, and a concrete cover which covers the inner lid and is disposed on the upper portion of the concrete covering layer. An outer lid, and the inner lid has a metal inner lid body portion having a hook portion that can be locked to an outer edge portion of the drum can and a disc portion that covers the opening portion of the drum can, There is provided a radioactive waste container having a concrete layer formed in a recess formed by a hook part and the disk part .

  In addition, the inner lid has a fastening portion at the center, the outer lid has an opening through which the fastener can be inserted, and a part of the fastener is inserted into the opening from the outside of the outer lid. And the outer lid may be fixed to the inner lid by engaging the fastener with the fastening portion. Furthermore, the concrete coating layer may have a recess capable of accommodating the head portion of the fastener at the center of the bottom surface portion, and may be configured to be able to load the radioactive waste storage container.

  Moreover, while the said concrete coating layer and the said outer cover are comprised with unreinforced concrete, metal fiber materials, a granular material, or a powdery body may be knead | mixed. Moreover, the said concrete coating layer may have a some insert arrange | positioned at the side periphery part, and the metal fitting for suspension may be comprised by this insert so that fastening is possible. Moreover, you may form the metal layer which can shield a radioactivity inside the said drum can.

  According to the above-described radioactive waste storage container according to the present invention, the outside of the drum can is covered with the concrete coating layer and the lightweight inner lid is arranged to shield the radioactivity without reducing the storage capacity of the drum can. Can be opened and closed easily. Therefore, even if the radioactive waste storage container is temporarily placed on the site until it is full, the inner lid can be closed when the container is not in use, preventing leakage of radioactivity and infiltration of rainwater. It is possible to suppress the reduction of the storage amount, the diffusion of radioactive materials, the exposure of neighboring residents and workers, and the like.

  In addition, since it is based on drums that are generally available on the market, it is possible to reduce the size and weight of radioactive waste storage containers. For example, vehicle-mounted truck cranes (unic vehicles, cab back crane vehicles) Etc.), and the radioactive waste container can be easily transported to a location close to a residential area where hot spots are generated. Therefore, according to the present invention, it is possible to provide a radioactive waste storage container that is small in size and excellent in portability and excellent in radioactivity shielding properties.

It is sectional drawing which shows the radioactive waste storage container which concerns on embodiment of this invention. It is explanatory drawing of the inner cover shown in FIG. 1, (A) is a top view, (B) is a fragmentary sectional view of a modification, (C) has shown the top view which shows the fixing means of an inner cover. It is explanatory drawing of the concrete coating layer and outer cover shown in FIG. 1, (A) is XX sectional drawing in FIG. 1, (B) has shown the bottom view of the outer cover. It is a figure which shows the sealing procedure of a radioactive waste storage container, (A) is an open state, (B) is an inner lid fixation state, (C) is an outer lid mounting state, (D) is an outer lid fixation state, Is shown. It is a figure which shows the use condition etc. of the radioactive waste storage container shown in FIG. 1, (A) is a suspended state, (B) is a loading state, (C) has shown the state which lined the metal layer. .

  Hereinafter, an embodiment of a radioactive waste storage container according to the present invention will be described with reference to FIGS. Here, FIG. 1 is a cross-sectional view showing a radioactive waste container according to an embodiment of the present invention. 2A and 2B are explanatory views of the inner lid shown in FIG. 1, wherein FIG. 2A is a top view, FIG. 2B is a partial cross-sectional view of a modification, and FIG. 2C is a top view showing fixing means for the inner lid. Show. 3 is an explanatory view of the concrete covering layer and the outer lid shown in FIG. 1, in which (A) is a cross-sectional view taken along line XX in FIG. 1, and (B) is a bottom view of the outer lid.

  A radioactive waste storage container 1 according to an embodiment of the present invention is a radioactive waste storage container capable of storing radioactive waste and shielding radioactivity, as shown in FIGS. A drum can 2 that forms an object storage unit, a concrete covering layer 3 that covers the outer surface of the side periphery and bottom of the drum can 2, an inner lid 4 that covers the upper portion of the drum can 2, and the inner lid 4 are fixed to the drum can 2 It has a fixing means 5 and a concrete outer lid 6 that covers the inner lid 4 and is disposed above the concrete coating layer 3.

  The drum 2 is a container for storing radioactive waste including earth and sand accumulated with radioactive substances such as hot spots, contaminated water, rain gutters attached with radioactive substances, rubble, waste materials and the like. The drum can 2 generally means a metallic can having a volume of 200 liters or more, and the size and dimensions are defined by JIS standards. The most common drum 2 has a capacity of 200 liters, a diameter of about 600 mm, and a height of about 900 mm. There are two types of drum cans: an open drum whose lid can be opened and closed and a tight head drum whose lid is sealed. In this embodiment, an open drum is used.

  The concrete covering layer 3 has a function of covering the outer peripheral surface of the drum can 2 and shielding radiation. The concrete covering layer 3 is formed so as to cover the bottom portion and the side peripheral portion of the drum can 2 and the upper portion (for example, about 50 mm) of the drum can 2 is exposed. The exposed portion of the drum can 2 is used as a locking portion for the inner lid 4. The concrete coating layer 3 has a thickness of about 50 to 150 mm, for example.

  When the concrete covering layer 3 is formed, the drum can 2 is turned upside down, the mold is assembled, the concrete is placed (dried), and compacted in the same manner as a normal concrete product. , Finishing and curing. In addition, the mold 31 at the time of placing the concrete is welded by welding the insert 31 for holding the formwork to the bottom of the drum can 2 and fixing the formwork covering the bottom of the drum can 2 to the insert 31 using a fastener such as a bolt. You may make it suppress the raising of a frame. By such treatment, the concrete covering layer 3 having a flat bottom can be formed. Further, at the time of compaction, vibration may be applied from the outside of the formwork to fluidize the concrete so that the concrete is spread to every corner, and bubbles and excess moisture contained in the concrete may be removed.

  Moreover, the concrete coating layer 3 has a recess 32 formed in the center of the bottom surface. The concave portion 32 is formed in a size that can accommodate the fastener 7 that fixes the outer lid 6 to the inner lid 4 when the radioactive waste storage container 1 is stacked in a vertically placed state.

  Moreover, the concrete coating layer 3 may have the some insert 33 arrange | positioned at the side periphery. For example, as shown in FIG. 3B, the inserts 33 are arranged at three locations at intervals of a central angle of 120 degrees. However, the arrangement of the inserts 33 is not limited to the illustrated one, and may be arranged at two places, may be arranged at four or more places, or may be arranged at equal intervals. However, they may be arranged at arbitrary intervals. The insert 33 is fastened with, for example, a hanging metal fitting used when the radioactive waste container 1 is transported. Further, the reinforcing bar 34 may be arranged by spanning a substantially U-shaped reinforcing bar around the outer periphery of the insert 33. By arranging the reinforcing bar 34, the strength can be partially improved.

  The concrete covering layer 3 is made of so-called unreinforced concrete, and a metal fiber material, a granular material, or a powdery material may be kneaded. Since the drum 2 is disposed inside the concrete coating layer 3, the concrete coating layer 3 can be constituted by unreinforced concrete. For example, when the concrete coating layer 3 is thick, You may make it insert a reinforcing bar suitably.

  Further, for example, steel fibers are used as the fiber material, iron balls or lead particles are used as the granular material, and iron powder or lead powder is used as the powdery material. These additives (fiber material, granule or powder) are not limited to iron or lead as long as the metal has a large specific gravity. By adding such an additive to concrete, the shielding property of radioactivity can be further improved. These additives are preferable to have a large amount, but considering the affinity with concrete, for example, the volume ratio to concrete is 0.5 to 5%, preferably about 0.5 to 3%. Adjusted to

  In addition, a sealing material 35 for suppressing water from entering the gap between the drum 2 and the concrete coating layer 3 may be disposed at the upper inner edge of the concrete coating layer 3. By disposing the sealing material 35, corrosion of the drum can 2 and the concrete coating layer 3 can be suppressed.

  The inner lid 4 is a lid for sealing the opening of the drum can 2. Specifically, as shown in FIGS. 1 and 2A, the inner lid 4 includes a hook portion 41a that can be locked to the outer edge of the drum can 2, and a disc portion 41b that covers the opening of the drum can 2. And a concrete layer 42 formed in a recess formed by the hook portion 41a and the disc portion 41b. A rubber packing may be disposed as a sealing material on the inner side of the hook portion 41a (the portion in contact with the upper end portion of the drum can 2).

  Thus, by forming the concrete layer 42 on the inner lid main body 41 used for the open drum, it is possible to improve the radiation shielding performance of the inner lid 4. Since the concrete layer 42 has a diameter of 600 mm or less and a thickness of about 10 to 20 mm, the weight of the inner lid 4 is about 20 to 30 kg and can be easily lifted by human power if there are several adult men. . Therefore, the inner lid 4 can be easily opened and closed, and the opening of the drum can 2 can be sealed with the inner lid 4 except when the radioactive waste is put into the radioactive waste container 1.

  Further, the inner lid 4 has a fastening portion 43 disposed at the center portion of the concrete layer 42 on the surface side. The fastening portion 43 has, for example, a nut shape capable of fastening the fastener 7 such as a bolt, and is fixed to the inner lid main body portion 41 by being welded to the disc portion 41b. A fastener 7 for fixing the outer lid 6 is fastened to the fastening portion 43 as will be described later.

  In addition, as shown in FIG. 2B, a rebar 44 (mesh rebar) may be arranged in the middle portion of the concrete layer 42. By inserting the mesh 44 into the concrete layer 42, the strength of the inner lid 4 can be improved, and deformation and breakage of the inner lid main body 41 when the concrete layer 42 is formed can be suppressed.

  The fixing means 5 is a part that is disposed along the outer edge of the inner lid 4 and fixes the inner lid 4 to the opening of the drum can 2 by tightening the hook portion 41 a of the inner lid 4. For example, as shown in FIGS. 1 and 2 (C), the fixing means 5 has a band portion 51 that can be disposed along the outer edge portion of the inner lid 4 and the band portion 51 is formed in an annular shape to reduce the diameter. And a lock mechanism 52 that holds the state. In FIG. 2C, a state where the lock mechanism 52 is released is illustrated by a one-dot chain line, and a state where the lock mechanism 52 is operated is illustrated by a solid line.

  The lock mechanism 52 is, for example, a lever member 52a that is rotatably disposed on a side surface portion of the band portion 51, and a connecting member (not shown) that connects the rotation portion of the lever member 52a and the free end of the band portion 51. ), And the lever member 52a is rotated from the outside to the inside while the connecting member is connected, thereby pulling the free end of the band portion 51 to reduce the diameter and tightening the inner lid 4. The The fixing means 5 is merely an example, and may have other configurations as long as the mechanism can fix the inner lid 4 to the drum 2.

  The outer lid 6 is a lid that covers the upper part of the concrete coating layer 3. Specifically, as shown in FIG. 1 and FIG. 3 (B), the outer lid 6 is a concrete substantially disk-shaped member having substantially the same diameter as the concrete coating layer 3, A recessed portion 61 is formed which constitutes a space in which the exposed portion of the drum 2, the inner lid 4 and the fixing means 5 can be accommodated. The concave portion 61 has a first arc portion 61 a along the outer shape of the inner lid 4 and a second arc portion 61 b that is partially enlarged in order to avoid interference with the fixing means 5. The second arc portion 61b is formed to be larger than the width of the fixing means 5 and is configured so that the outer lid 6 can be easily positioned.

  The outer lid 6 has an opening 62 through which the fastener 7 (see FIG. 1) can be inserted at the center. As shown in FIG. 1, the screw portion of the fastener 7 such as a bolt is inserted from the outside of the opening 62 and screwed into the fastening portion 43 (nut) of the inner lid 4. That is, the inner lid 4 has a fastening portion 43 at the center, the outer lid 6 has an opening 62 through which the fastener 7 can be inserted, and the fastener 7 is inserted into the opening 62 from the outside of the outer lid 6. The outer lid 6 is fixed to the inner lid 4 by inserting a part of the outer lid 6 and engaging the fastener 7 with the fastening portion 43.

  As described above, by disposing the fixing portion of the outer lid 6 in the center portion, it is not necessary to accurately position the outer lid 6 and the sealing operation of the outer lid 6 can be easily performed. On the other hand, when the fixing part of the outer lid 6 is arranged in a place other than the central part (for example, the outer peripheral part), it is necessary to accurately match the phase with the fastening part arranged in the concrete coating layer 3 or the like, The sealing operation of the outer lid 6 becomes troublesome.

  The outer lid 6 is made of unreinforced concrete like the concrete coating layer 3 and may be kneaded with metal fiber material, granular material or powdery material. With this configuration, the radiation shielding property of the outer lid 6 can be improved.

  Here, FIG. 4 is a figure which shows the sealing procedure of a radioactive waste storage container, (A) is an open state, (B) is an inner lid fixation state, (C) is an outer lid mounting state, (D ) Shows the outer lid fixed state. In each figure, illustrations of the inserts 31 and 33, the sealing material 35, and the like are omitted.

  Since the radioactive waste storage container 1 according to the above-described embodiment is based on a drum 2 that is generally commercially available, the radioactive waste storage container 1 can be reduced in size and weight, For example, the radioactive waste storage container 1 can be easily transported to a location close to a residential area where hot spots are generated, which can be transported by a vehicle-mounted truck crane (unic vehicle, cab back crane vehicle, etc.). Can do. And the radioactive waste storage container 1 is arrange | positioned in the location close | similar to a hot spot, the outer cover 6 and the inner cover 4 are removed, and radioactive waste is stored.

  As shown in FIG. 4A, when the radioactive waste W is stored in the radioactive waste storage container 1, the outer lid 6 and the inner lid 4 are removed and the drum can 2 is left open. In addition, since the outer lid 6 has a weight of about 30 to 40 kg, the outer lid 6 may be removed by using a crane mounted on a vehicle-mounted truck crane, or by manpower (for example, two (About 3 people) may be performed. The middle lid 4 may be removed manually because the middle lid 4 is lightweight, or a crane mounted on a vehicle-mounted truck crane may be used.

  Then, the radioactive waste storage container 1 is kept for a long time, for example, while it is raining, while the radioactive waste W is being recovered from the hot spot, until the radioactive waste storage container 1 is full. In the case of leaving it unattended, as shown in FIG. 4B, the inner lid 4 is put on the upper portion of the drum can 2 to seal the opening. At this time, the fixing means 5 may be used, or the use of the fixing means 5 may be omitted because of the temporary sealing.

  As described above, in the radioactive waste storage container 1 according to the present embodiment, the inner lid 4 has the concrete layer 42 and thus has a function of shielding radioactivity, and is lightened. Therefore, it can be easily lifted and placed on the drum 2 without using a heavy machine such as a crane. Accordingly, the drum can 2 can be easily opened and closed, and it is not necessary to keep the drum can 2 open at all times, thereby suppressing leakage and diffusion of radioactivity, exposure of workers and neighboring residents, and the like.

  After that, when the drum 2 is full or when all of the radioactive waste W at the hot spot is recovered, it is necessary to recover the radioactive waste storage container 1. In this case, as shown in FIG. 4B, the inner lid 4 is fixed to the drum can 2 by the fixing means 5, and the opening of the drum can 2 is hermetically sealed.

  Subsequently, as shown in FIG. 4C, the outer lid 6 is disposed on the concrete coating layer 3. Since the outer lid 6 has a weight of about 30 to 40 kg, the outer lid 6 is moved onto the concrete coating layer 3 using, for example, a crane mounted on a vehicle-mounted truck crane. Finally, since the radioactive waste storage container 1 is collected by a vehicle-mounted truck crane and transported to an intermediate disposal site or the like, it is not necessary to prepare a dedicated heavy machine when opening and closing the outer lid 6. .

  Next, as shown in FIG. 4D, the fastener 7 is inserted through the opening 62 of the outer lid 6 through a washer or the like, and the fastener 7 is connected to the fastening portion 43 of the inner lid 4. With this process, the outer lid 6 is fixed to the inner lid 4. Since the inner lid 4 is fixed to the drum 2, the outer lid 6 can be indirectly fixed to the drum 2, and the upper portion of the concrete coating layer 3 can be sealed. Since the outer lid 6 is formed of concrete that is thicker than the concrete layer 42 of the inner lid 4, the outer lid 6 is excellent in radioactivity shielding performance and can effectively suppress leakage of radioactivity. Moreover, since the opening part of the drum can 2 is sealed by the double lid structure of the inner lid 4 and the outer lid 6, leakage of radioactivity can be effectively suppressed.

  According to the radioactive waste storage container 1 according to the present invention described above, the outside of the drum can 2 is covered with the concrete coating layer 3 and the lightweight inner lid 4 is arranged, so that the storage capacity of the drum can 2 is not reduced. The function can be shielded and the container can be easily opened and closed. Therefore, even when the radioactive waste storage container 1 is temporarily placed on the site until the container is full, the inner lid 4 can be closed when the container is not used, thereby causing leakage of radioactivity and rainwater. Intrusion can be suppressed, and the reduction of the amount of accommodation, the diffusion of radioactive materials, the exposure of neighboring residents and workers, and the like can be suppressed.

  Here, FIG. 5 is a diagram showing a usage state and the like of the radioactive waste storage container shown in FIG. 1, wherein (A) is a suspended state, (B) is a loaded state, and (C) is a metal layer lined. The state is shown. In addition, in FIG.5 (B), the state which notched a part of bottom part of the radioactive waste storage container 1 is shown in figure.

  For example, when the radioactive waste storage container 1 is unloaded from the vehicle-mounted truck crane or collected by the vehicle-mounted truck crane, as shown in FIG. Since it has a weight of about 500 kg in an empty state, it is preferable to use a crane mounted on a vehicle-mounted truck crane. At that time, a hanging metal fitting 81 is attached to the insert 33 embedded in the peripheral surface of the radioactive waste container 1, the wire 82 is hung around the hanging metal fitting 81, and the wire 82 is locked to the hook 83 of the crane. The radioactive waste storage container 1 may be raised and lowered.

  That is, in the radioactive waste storage container 1 according to this embodiment described above, the concrete coating layer 3 has a plurality of inserts 33 arranged on the side periphery as shown in FIG. 1 and FIG. The hanging metal fitting 81 can be fastened to the insert 33.

  Further, when the radioactive waste storage container 1 is loaded at an intermediate disposal site or the like, as shown in FIG. 5 (B), another radioactive waste is disposed on the upper part of the vertically disposed radioactive waste storage container 1. The storage container 1 is placed and loaded. That is, in the radioactive waste storage container 1 according to this embodiment described above, as shown in FIGS. 1 and 5B, the concrete coating layer 3 can store the head of the fastener 7 in the center of the bottom surface. It has a concave portion 32 and is configured to be able to load the radioactive waste storage container 1.

  In addition, when the hollow which can accommodate the head of the fastener 7 is formed in the surface of the outer lid 6, since the head of the fastener 7 does not protrude from the surface of the outer lid 6, the radioactive waste storage container 1 Therefore, the recess 32 can be omitted, and the radioactive waste storage container 1 can be easily stacked in the vertical direction without forming the recess 32.

  Further, as a means for improving the radioactivity shielding property of the radioactive waste storage container 1, a metal layer 9 capable of shielding the radioactivity may be formed inside the drum can 2. For example, the metal layer 9 may be formed by sticking a lead plate, a lead sheet, an iron plate or an iron sheet, or may be formed by coating or spraying a material containing lead or iron. Good.

  The present invention is not limited to the above-described embodiment, and the gist of the present invention is such that the concrete covering layer 3 and the concrete thickness of the outer lid 6 can be appropriately changed according to the required shielding property of radioactivity. Of course, various changes can be made without departing from the scope.

DESCRIPTION OF SYMBOLS 1 Radioactive waste storage container 2 Drum can 3 Concrete coating layer 4 Middle lid 5 Fixing means 6 Outer lid 7 Fastener 9 Metal layers 31, 33 Insert 32 Recess 34 Reinforcement 35 Sealing material 41 Inner lid main-body part 41a Hook part 41b Disc Portion 42 Concrete layer 43 Fastening portion 44 Reinforcing bar 51 Band portion 52 Lock mechanism 52a Lever member 61 Recess 61a First arc portion 61b Second arc portion 62 Opening portion 81 Hanging bracket 82 Wire 83 Hook

Claims (6)

A radioactive waste storage container capable of storing radioactive waste and shielding radioactivity,
A drum that forms a housing for the radioactive waste;
A concrete coating layer covering the outer surface of the side periphery and bottom surface of the drum,
An inner lid covering the top of the drum,
Fixing means for fixing the inner lid to the drum can;
A concrete outer lid that covers the inner lid and is disposed on top of the concrete covering layer ;
The inner lid is formed by a metal inner lid main body portion having a hook portion that can be locked to an outer edge portion of the drum can and a disc portion that covers the opening portion of the drum can, and the hook portion and the disc portion. A radioactive waste container , comprising: a concrete layer formed in a hollow formed on the substrate. The inner lid has a fastening portion at the center, the outer lid has an opening through which the fastener can be inserted, and a part of the fastener is inserted into the opening from the outside of the outer lid. The radioactive waste storage container according to claim 1, wherein the outer lid is fixed to the inner lid by engaging the fastener with the fastening portion. Said concrete covering layer has a head capable of accommodating recesses of the bottom center to the fastener, the is configured to be loaded with radioactive waste container, it claimed in claim 2, wherein Radioactive waste storage container. The said concrete coating layer and the said outer cover are comprised with unreinforced concrete, and metal fiber materials, a granular material, or a powdery body is knead | mixed, The Claims 1-3 characterized by the above-mentioned. The radioactive waste container according to any one of the above. The said concrete coating layer has a some insert arrange | positioned at the side periphery part, The metal fitting for suspension is comprised to this insert so that fastening is possible, The any one of Claims 1-4 characterized by the above-mentioned. The radioactive waste container according to crab. The radioactive waste container according to any one of claims 1 to 5 , wherein a metal layer capable of shielding radioactivity is formed inside the drum.