JP3204045U - Storage box for waste containing radioactive materials - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box capable of safely storing waste containing radioactive material while shielding the radiation. A storage box includes a box-shaped block 1 made of precast concrete having a bottom plate portion 2 and a peripheral wall portion 3 and having an upper surface opened; a water-proof sheet 4 laid along the inner surface of the box-shaped block 1; A lid panel made of precast concrete that closes the opening of the box-shaped block 1, and the lid panel 5 is formed in a vertical direction formed at the upper end surface of the peripheral wall portion 3 and the portion of the lid panel 5 that is projected above the upper end surface A bolt as a connector 6 that enters the extending hole and is joined to the upper end of the peripheral wall 3. [Selection] Figure 5

Description

  The present invention relates to a storage facility for waste containing radioactive materials.

  The Tohoku-Pacific Ocean Earthquake that occurred on March 11, 2011, and the accompanying tsunami damaged the nuclear power generation facility at the Fukushima Daiichi Nuclear Power Station. Released outside the house and scattered around. Since then, radioactive substances have been detected one after another from sludge in sewage treatment facilities in various locations where rainwater flows.

  In general, sewage sludge discards incineration ash, uses molten slag produced by incineration at high temperature as concrete aggregate (Patent Document 1), uses dried organic matter as compost and fuel (patent) Document 2, 3). However, sewage sludge containing radioactive substances has a problem of health damage, so that the general treatment as described above is difficult. Therefore, at present, the treatment method of sewage sludge containing radioactive substances is not clear, and is temporarily stored only by a simple curing method such as sheet curing. However, in sheet curing, etc., radiation shielding effects are hardly expected, and care is required not only during storage but also during transportation.

“The concept of the immediate handling of by-products such as water and sewage treatment (註)” announced by the Nuclear Emergency Response Headquarters on June 16, 2011 (註: dewatered sludge and dewatered sludge incinerated, melted, etc. In the case of products that are reused, the following ideas were presented, but there are still many items that must be considered.
・ Store sludge with radioactive cesium concentration exceeding 100,000 Bq / kg in a facility that can shield radiation appropriately in the prefecture. We will continue to examine specific disposal methods.
・ Sludge with a radioactive cesium concentration of more than 8,000 Bq / kg and less than 100,000 Bq / kg can be temporarily placed in a managed disposal site while maintaining an appropriate distance from the residential area. After individual safety assessment and long-term management methods, it can be landfilled.
-Sludge with a radioactive cesium concentration of 8,000 Bq / kg or less can be temporarily placed in a management-type disposal site while maintaining an appropriate distance from residential areas. Can be landfilled on the premise that the site will not be used for residence.

JP-A-6-279084 JP-A-5-155678 JP-A-9-248600

  As a method for storing waste such as sewage sludge so as to shield radiation, it can be buried in the soil. However, this method has problems that it is difficult to control the burial depth or that there is anxiety about long-term storage. In addition, there is also a problem that it takes time and labor to dig up when the final disposal method and the destination of the waste such as sewage sludge are moved.

  Therefore, the purpose of the present invention is to be able to safely store wastes such as sewage sludge, soil, weeds, agricultural products, fishery products containing radioactive substances, shielding the radiation, and for a long time if necessary. It is to provide a box that can also be stored. Another purpose is to enable the box with the required capacity to be constructed in a short construction period. Furthermore, it is to make it easy to relocate wastes such as sewage sludge at a stage where the final treatment method and the destination of the waste are determined.

  A storage box for waste containing radioactive materials according to the present invention includes a box-shaped block made of precast concrete having a bottom plate portion and a peripheral wall portion and an upper surface opened, and a water-proof sheet laid along the inner surface of the box-shaped block And a lid panel made of precast concrete that closes the opening of the box-shaped block, and the lid panel is a hole extending in the longitudinal direction formed in the upper end surface of the peripheral wall portion and the portion of the lid panel projected upward from the upper end surface It is the bolt which enters, It is joined to the upper end of a surrounding wall part, It is characterized by the above-mentioned.

  The size of the inner space of the box-shaped block is not particularly limited, but considering the balance between the storage amount and the weight of the block suitable for moving and transporting with an actual mobile transport facility, each of the width, length, and height of the inner space The size is preferably 800 to 2000 mm.

  The material and thickness of the lid panel are not particularly limited, and can be determined, for example, according to the radiation dose of the waste so that it can be shielded. For example, when the radiation dose is low, it is made of steel plate, and when the radiation dose is high, it is made of precast concrete, thick steel plate, a combination of steel plate and concrete plate, a combination of steel plate and lead plate, etc. is there.

  The concrete thickness of the lid panel when it is made of box-shaped blocks and precast concrete (hereinafter simply referred to as `` member thickness '') is the radiation attenuation performance and the block weight suitable for moving and transporting with actual mobile transport equipment. In view of the balance, it is preferably 10 to 50 cm. If it is less than 10 cm, the radiation dose attenuation performance is low, and if it exceeds 50 cm, the radiation dose attenuation performance is not so high, but becomes heavy. For example, when the thickness is 12 cm, the radiation dose can be attenuated by about 75%, when the thickness is 15 cm, the radiation dose can be attenuated by about 80%, and when the thickness is 20 cm, the radiation dose is reduced. It can be attenuated by about 90%, and when the thickness is 40 cm, the radiation dose can be attenuated by about 99%.

  When the box-shaped block and the lid panel are joined, all the gaps formed between the adjacent surfaces that are close to each other (including abutment. Due to the limit of member accuracy, a gap can be formed even if abutment. The same shall apply hereinafter). It is preferable to bend in the middle from the inner surface of the member to the outer surface so as not to be in a straight line from the outer surface to the outer surface. The radiation radiated from the radioactive material of the waste has a property of going straight, and if the gap is in a straight line from the inner surface to the outer surface, there is a risk of leaking outside through the gap. This is because if it is not in a straight line from the outer surface to the outer surface, it will surely pass through the concrete part and attenuate.

  Although it does not specifically limit as a water-impervious sheet, The sheet | seat consisting of elastomers, such as sheets, such as polyethylene resin and polyvinyl chloride, and polyethylene-type elastomer, can be illustrated. Moreover, what formed the clay mineral (bentonite) which has waterproof performance and adsorption | suction performance in the sheet form can also be used as a water-impervious sheet.

  It is preferable that a sheet fixing tool having a heat welding material on the surface is attached to the inner wall of the box-shaped block, and the water shielding sheet is welded and fixed to the heat welding material. This is because displacement and peeling of the water shielding sheet are prevented.

  Examples of the waste containing radioactive substances stored in the storage box of the present invention include sewage sludge, soil, weeds, agricultural products, fish catches and the like. Among these, the state of sewage sludge is not particularly limited, and may be any of dewatered sewage sludge, incinerated ash of incinerated sewage sludge, or molten slag of incinerated sewage sludge. Further, the waste may be in a bare state, but it is preferable that the waste is put in a container such as a bag or a box from the viewpoint of ease of transfer.

An opening and an opening / closing member that opens and closes the opening can be provided in a part of the lid panel. Although the purpose of the opening is not particularly limited, the following (a) and (b) can be exemplified.
(A) Opening for monitoring to open the opening when necessary to check the state of sewage sludge.
(A) An opening for opening that allows a small amount of waste to be input by opening the opening when it is desired to gradually input waste. As this waste, a small amount of waste having a weight of, for example, 30 kg or less placed in a container such as a bag or a box, which is collected in a certain community unit (regional unit, town unit, etc.) is suitable.

  According to the present invention, waste containing radioactive materials can be stored safely while shielding the radiation, and can also be stored for a long time if necessary. In addition, a facility with the required capacity can be constructed in a short construction period. Furthermore, it is also possible to easily perform relocation at the stage where the final treatment method and the destination of the waste such as sewage sludge are determined.

It is a perspective view which shows the box-shaped block of various dimensions in an Example. The step which lays a water-proof sheet | seat in a box-shaped block in the Example is shown, (a) is a perspective view, (b) is sectional drawing. In the same Example, (a) is a perspective view which shows the middle of putting sewage sludge in the inside of a box-shaped block, (b) is a perspective view when carrying a lid panel and conveying. In the Example, it is a perspective view at the time of carrying a lid panel on a box-shaped block. The sewage sludge storage box which put the sewage sludge in the Example is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. (a) is sectional drawing of the junction part of the Example, (b) is a perspective view when arranging the sewage sludge storage box which put the sewage sludge in the Example in the storage place. The sewage sludge storage box of the example of a change is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. The storage box of Example 10 is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. The storage box of Example 11 is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. The storage box of Example 12 is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. The storage box of Example 13 is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. The storage box of Example 14 is shown, (a) is the perspective view which fractured | ruptured partially, (b) is sectional drawing. (A) is a side view at the time of conveying the waste with a bag taken out from the storage box of Examples 10-14, (b) is sectional drawing when the waste is stored in a storage place.

  A storage box for waste containing radioactive materials consists of a box-shaped block made of precast concrete with a bottom plate part and a peripheral wall part and an open top surface, a water-proof sheet laid along the inner surface of the box-shaped block, and a box-like shape A lid panel made of precast concrete that closes the opening of the block, and the lid panel 5 is formed in a vertically extending hole formed in an upper end surface of the peripheral wall portion 3 and a portion of the lid panel 5 that is projected upward from the upper end surface. It is joined to the upper end of the peripheral wall 3 by a bolt 6 that enters.

  An embodiment of a sewage sludge storage box embodying the present invention will be described with reference to FIGS.

  The sewage sludge storage box of the embodiment includes a box-shaped block 1 made of precast concrete having a square plate-like bottom plate portion 2 and a square cylindrical peripheral wall portion 3 rising from the outer edge portion of the bottom plate portion 2 and having an open top surface. The water shielding sheet 4 laid along the inner surface of the box-shaped block 1 and a square plate-like lid panel 5 made of precast concrete that closes the opening of the box-shaped block 1.

  Reinforcing bars (not shown) are embedded in the bottom plate portion 2, the peripheral wall portion 3, and the lid panel 5. The lid panel 5 is joined to the upper end of the peripheral wall 3 with a bolt 6 as a joining tool.

  Table 1 below shows the dimensions (inner air size, outer size), product mass, internal capacity, and radiation attenuation rate of the sewage sludge storage boxes of Examples 1 to 9. The thicknesses of the bottom plate portion 2, the peripheral wall portion 3, and the lid panel 5 in one embodiment are the same, and are simply expressed as “member thickness”. Moreover, the box-shaped block of the sewage sludge storage box of Examples 1-9 is shown in FIG.

  As shown in FIGS. 5 and 6A, the gap G formed between the adjacent surfaces F adjacent to each other when the box-shaped block 1 and the lid panel 5 are joined is not aligned with the inner surface to the outer surface of the member. In addition, in the middle from the inner surface to the outer surface of the member, it is bent by, for example, fitting of irregularities. As a result, as described above, even if the radiation R is applied to the gap G, it always passes through the concrete portion C and attenuates.

  The water-impervious sheet 4 of the present embodiment is stretched using a sheet fixture 10 as shown in FIGS. That is, the anchor 13 made of, for example, an internal thread embedded in a key portion of the inner surface of the box-shaped block 1 is provided with a sheet fixture 10 including a metal disk 11 and a heat welding material 12 attached to the surface thereof. For example, it is fixed by a bolt 14. As the sheet fixture 10, for example, a trade name “IH disk” manufactured by Akiyamade can be used. The water shielding sheet 4 is welded and fixed to the heat welding material 12.

  The sewage sludge storage box of this embodiment is used as follows, for example.

(1) As shown in FIG. 2, thermal welding of a sheet fixing tool 10 in which the water shielding sheet 4 is melted by electromagnetic induction heating performed by pressing the high frequency electromagnetic induction heater 15 through the water shielding sheet 4 for a predetermined time. It is welded and fixed to the material 12 and laid along the inner surface of the box-shaped block 1. The water shielding sheets 4 are laid in a watertight manner by welding overlapping portions. Note that this step may be performed at the factory after the box-shaped block 1 is precast, or may be performed on site.

(2) As shown in FIG. 3, the box-shaped block 1 is placed on a moving and transporting facility 20 such as a truck, and the sewage sludge 25 is put inside the box-shaped block 1 by going to a site where there is sewage sludge containing radioactive substances. . (A) of the same figure shows the example which puts the sewage sludge 25 using the input equipment 21, such as a crane vehicle, (b) has shown the example which puts the sewage sludge 25 from the hopper 22 of a sewage treatment plant.

(3) As shown in FIGS. 4, 5, and 6 (a), the upper end opening of the box-shaped block 1 is closed with the lid panel 5. The lid panel 5 is a bolt as a connector 6 that enters a longitudinally extending hole formed in the upper end surface of the peripheral wall portion 3 and a portion of the lid panel 5 that is projected upward from the upper end surface, and is attached to the upper end of the peripheral wall portion 3. Join.

(4) As shown in FIG. 6 (b), the box-shaped blocks 1 are transported to a storage location by the mobile transport equipment 20 such as a truck, and are lowered and arranged at the storage location.

According to the present embodiment described above, the following operational effects can be obtained.
(A) Since the box-shaped block 1 and the lid panel 5 are used, it is not necessary to perform concrete on-site, the facility and labor are not required, construction in a short construction period is possible, and the cost is low.
(B) Since the sewage sludge storage box is easily mass-produced, a sufficient storage amount can be secured.
(C) Since the box-shaped block 1 and the lid panel 5 can attenuate the radiation dose with the attenuation performance according to the thickness as described above, sewage sludge containing radioactive substances can be safely shielded from the radiation. Can be stored. As described above, since the gap is bent at a location close to the bonding, radiation can be reliably shielded. Moreover, since the box-shaped block 1 and the cover panel 5 are robust, the sewage sludge containing a radioactive substance can also be stored for a long term as needed.
(D) The water-impervious sheet 4 can be separated from the external environment in a watertight manner, and leakage of sewage can be prevented.
(E) Since the box-shaped block 1 protects the water-impervious sheet 4, the water-impervious sheet 4 is hardly cracked even if there is an earthquake or the like, and the water-imperviousness is maintained.
(F) Since the water shielding sheet 4 is welded and fixed to the heat welding material 12 of the sheet fixture 10, the water shielding sheet 4 is not displaced or peeled off even if there is an earthquake or the like, and the reliability is high.
(G) It is also possible to easily move the sewage sludge at the stage where the final treatment method and the destination of the sewage sludge have been determined.

  Further, as in the modified example shown in FIG. 7, a monitoring opening 8 and a precast concrete opening and closing that opens and closes the monitoring opening 8 by being fitted to and removed from the monitoring opening 8 in a part of the lid panel 5. A stopper 9 is provided, and when necessary, the monitoring opening 8 can be opened so that the state of the sewage sludge 25 can be confirmed.

  Further, as in Examples 10 to 13 shown in FIGS. 8 to 11, a part of the lid panel 5 is provided with a closing opening 31 and an opening / closing lid for opening and closing the closing opening 31, and gradually. When it is desired to input waste, the input opening 31 can be opened so that a small amount of waste can be input.

  Although the length of one side of the opening part 31 for injection will not be specifically limited if it is below the length of the one side of the opening of the box-shaped block 1, 30-100 cm is preferable. If it is less than 30 cm, it will be difficult to put in, and if it exceeds 100 cm, it will become larger than necessary.

  The material and thickness of the opening / closing lid are not particularly limited, and can be determined, for example, according to the radiation dose of the waste so that it can be shielded. For example, when the radiation dose is low, it is made of a steel plate. When the radiation dose is high, it is made of a thick steel plate, a combination of a steel plate and a concrete plate, a combination of a steel plate and a lead plate, or the like.

  In Example 10 shown in FIG. 8, a frame 32 formed by joining a rust-proof plated steel material in a square frame shape is attached to the edge of a rectangular input opening 31 provided in the approximate center of the lid panel 5. Two opening / closing lids 33 made of a rust-proof plated steel plate are hinged by hinges 34 on two opposite sides of 32, and the opening portion 31 can be opened and closed by opening the opening / closing lid 33 in a double-tone manner. The opening / closing lid 33 can be locked with the closing opening 31 closed. The opening / closing lid 33 is provided with a handle 33c. A waterproof packing 35 is interposed between the frame 32 and the lid panel 5 and between the frame 32 and the opening / closing lid 33. The lid panel 5 is protruded downward along the outer edge of the lid panel 5 so that the gap G formed between the adjacent surfaces with the box-shaped block 1 is not in a straight line from the inner surface to the outer surface of the member. The lid protrusion 5a is joined to the box-shaped block 1 so as to fit into the wall protrusion 3a protruding upward along the opening of the box-shaped block 1. By this joining, even if radiation is applied to the gap G, the radiation always passes through the concrete portion and is attenuated. Further, since the wall protrusion 3a protrudes upward from the other part of the upper end of the peripheral wall 3, water entering the gap G from the outside of the storage box cannot pass over the wall protrusion 3a and the wall protrusion 3a Stopped in front. Therefore, it is difficult for water such as rainwater to enter the inner space of the box-shaped block 1 from the gap G. A packing 16 is interposed between the lid panel 5 and the wall protrusion 3a. The lid panel 5 of Examples 11 to 13 is also joined to the box-shaped block 1 in the same manner as the lid panel 5 of Example 10, and the packing 16 is interposed between the lid panel 5 and the wall projection 3a. Yes.

  In Example 11 shown in FIG. 9, a frame 36 formed by joining a rust-proof plated steel material in a square frame shape is attached to the edge of the rectangular opening 31 provided at two locations on the lid panel 5. An opening / closing lid 37 made of a rust-proof plated steel plate is hinged to each side of the frame 36 by a hinge 38, and each opening opening 31 can be opened / closed by opening / closing each opening / closing lid 37 independently. The open / close lid 37 can be locked with the closing opening 31 closed. The opening / closing lid 37 is provided with a handle 37c. The waterproof packing 35 is the same as that of the tenth embodiment.

  In Example 12 shown in FIG. 10, a rectangular opening 31 is provided at substantially the center of the lid panel 5, and the opening and closing lid 40 made of a rust-proof plated steel plate is protruded downward from the opening 31. The insertion opening 31 can be opened and closed by removably fitting the portion 40 a to the insertion opening 31. The opening / closing lid 40 can be fixed to the lid panel 5 with the closing opening 31 closed, so that the opening / closing lid 40 has bolts 40d at the four corners placed on the lid panel 5 when the closing opening 31 is closed. 5 can be screwed. The opening / closing lid 40 is provided with a handle 40c. A waterproof packing 35 is interposed between the opening / closing lid 40 and the lid panel 5.

  In the thirteenth embodiment shown in FIG. 11, a stepped portion 41 projecting inward is formed immediately below the edge of the rectangular insertion opening 31 provided at the approximate center of the lid panel 5. A plurality of independent prismatic (for example, 90 mm × 99 mm square) divided lids 42 a are removably dropped into the opening 31 for loading, both ends are placed on the stepped portion 41, and adjacent divided The lids 42a are brought into contact with each other, and a cover plate 42b made of a rust-proof plated steel plate that is slightly larger than the opening 31 for loading is placed on the divided lid 42a, and the opening / closing made up of the divided lid 42a and the cover plate 42b. The closing opening 31 can be opened and closed by the lid 42. All of the divided lids 42a can be removed to open all of the input openings 31, or an appropriate number of divided lids 42a can be removed to change the size of the input openings 31 according to the size of waste to be input. Some can be opened. The opening / closing lid 42 can be fixed to the lid panel 5 with the closing opening 31 closed, and the opening / closing lid 42 is bolted to the four corners of the cover plate 42b placed on the lid panel 5 when the closing opening 31 is closed. 42d can be screwed to the lid panel 5. A handle 42c is provided on the cover plate 42b. Waterproof packing 43 is interposed between the stepped portion 41 and the divided lid 42a and between the divided lid 42a and the cover plate 42b.

  Further, as in the fourteenth embodiment shown in FIG. 12, the lid panel can be reduced in weight by changing the lid panel from precast concrete to steel plate, and the opening for opening and the lid for opening and closing are also provided. Even if it is provided on the lid panel, the structure can be simplified and the number of parts can be reduced.

  In the fourteenth embodiment, a protrusion formed by joining a rust-proof plated steel material in a square frame shape to the edges of a rectangular input opening 61 provided at two locations of a lid panel 60 made of a square rust-proof plated steel sheet. 63 is projecting upward, and an opening / closing lid 62 made of a rust-proof plated steel plate is hinged to each side of each projection 63 by a hinge 64, and each opening / closing lid 62 is opened and closed independently to open and close each opening. 61 can be opened and closed. The opening / closing lid 62 can be locked with the closing opening 61 closed. The opening / closing lid 62 is provided with a handle 62c. A waterproof packing 65 is interposed between the protruding portion 63 and the opening / closing lid 62. The lid panel 60 is in contact with the wall projection 3 a and is joined to the upper end of the peripheral wall 3 with a bolt 6. A packing 16 is interposed between the lid panel 60 and the wall projection 3a.

  The storage boxes of Examples 10 to 14 are used as follows, for example.

(1) The box-shaped block 1 is installed in a certain community unit (regional unit, town unit, etc.). As shown in FIGS. 8 to 12, a rectangular flexible container bag 45 is placed inside the box-shaped block 1 in which the water-impervious sheet 4 is laid along the inner surface, and the lid panels 5 and 60 are joined to the box-shaped block 1. To do.
(2) Put soil (such as soil, weeds, crops, and fishery) containing radioactive materials in the community or on an individual basis (preferably a weight of 30 kg or less for ease of carrying) in a bag 46 such as sandbag. Then, the opening openings 31, 61 are opened by the opening / closing lids 33, 37, 40, 42, 62, and the bag 46 is introduced into the box-shaped block from the opening openings 31, 61. After the closing, the opening openings 31 and 61 are closed by the open / close lids 33, 37, 40, 42 and 62.

(3) When the inside of the box-shaped block 1 is filled with the waste-filled bag 46, the lid panels 5 and 60 are removed from the box-shaped block 1, and then, as shown in FIG. The rectangular flexible container bag 45 containing the bag 46 is taken out from the box-shaped block 1 by the crane 23 or the like provided in the mobile transport equipment 20, loaded on the loading platform of the mobile transport equipment 20 and transported to the storage location.

(4) At the storage location, as shown in FIG. 13B, the rectangular flexible container bags 45 containing the bags 46 are accumulated and stored in a storage facility 50 made of, for example, a concrete wall.

  The above use case is particularly suitable when the waste is a waste with a relatively low radiation dose, which can be handled in the community or on an individual basis.

  In addition, the storage boxes of Examples 10 to 14 can be sufficiently used even if the radiation dose of the waste is high as long as it is handled by a person who has taken care or protection against the radiation. In that case, as described above, the material and thickness of the opening / closing lid can be determined so that the radiation dose can be shielded, or the waste can be transported to the storage location together with the storage box as in the first embodiment. Preferably, therefore, the square flexible container bag can be omitted.

According to Examples 10-14, in addition to the effects obtained in Examples 1-9, the following effects are obtained.
(H) Since the lid panels 5 and 60 are joined to the box-shaped block 1, waste can be thrown into the interior of the box-shaped block 1 through the opening openings 31 and 61 opened by the opening / closing lid. A small amount of waste generated at any time can be recovered and stored efficiently.

Note that the present invention is not limited to the configuration of the above-described embodiment, and can be embodied by being appropriately changed without departing from the spirit of the invention, for example, as follows.
(1) Laying the water shielding sheet so as to cover the upper part of the sewage sludge 25 placed in the box-shaped block 1.

DESCRIPTION OF SYMBOLS 1 Box-shaped block 2 Bottom plate part 3 Perimeter wall part 4 Water shielding sheet 5 Lid panel 6 Bolt 8 Monitoring opening part 9 Opening and closing stopper 10 Seat fixing tool 20 Truck 21 Crane truck 22 Hopper 25 Sewage sludge 31 Opening opening part 33 Opening and closing cover 37 Open / close lid 40 Open / close lid 42 Open / close lid 60 Lid panel 61 Opening opening 62 Open / close lid

Claims (4)

A box-shaped block (1) made of a precast concrete having a bottom plate portion (2) and a peripheral wall portion (3) and having an open top surface, and a water shielding sheet (4) laid along the inner surface of the box-shaped block (1) And a lid panel (5) made of precast concrete that closes the opening of the box-shaped block (1),
The lid panel (5) is a bolt (6) that enters a longitudinally extending hole formed in the upper end surface of the peripheral wall portion (3) and a portion of the lid panel (5) that projects the upper end surface upward. (3) A waste storage box containing a radioactive material, characterized by being joined to the upper end.   2. The waste storage box containing radioactive material according to claim 1, wherein the concrete thickness of the box-shaped block (1) and the lid panel (5) is 15 to 50 cm.   2. The waste storage box containing radioactive material according to claim 1, wherein the concrete thickness of the box-shaped block (1) and the lid panel (5) is 20 to 50 cm.   A part of the lid panel (5) is provided with a monitoring opening (8) and an opening / closing stopper (9) that is fitted to and removed from the monitoring opening (8) to open and close the monitoring opening (8). The waste storage box containing radioactive material according to claim 1, 2 or 3, wherein the state of the waste (25) containing radioactive substance can be confirmed by opening the monitoring opening (8).

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