JP2017146213A - Container for radioactive material containing wastes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for radioactive material containing wastes that can reduce impact at falling and is highly resistant to impact.SOLUTION: The container for radioactive material containing wastes includes: an internal container 30 containing radioactive material containing wastes; an external container 10 containing the internal container 30; and a filling material 50 filled between the internal and external containers 30 and 10, the filling material 50 having a strength smaller than those of the internal container 30 or the external container 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a radioactive substance-containing waste container for containing radioactive substance-containing waste.

Due to the accident at the Fukushima Daiichi Nuclear Power Station caused by the Great East Japan Earthquake, contaminated water staying in the reactor building is being treated by multiple purification facilities including multi-nuclide removal facilities. To date, all purification processes for highly contaminated water containing strontium, excluding the water remaining at the bottom of the storage tank, have been completed.
Used adsorbents and precipitation products generated from the multi-nuclide removal equipment when treating contaminated water are stored in a high-performance container made of polyethylene (hereinafter referred to as HIC). . In the future, it will be necessary to treat and dispose of radioactive material-containing waste generated from work toward decommissioning in parallel with some contaminated water treatment.
The form and storage of these radioactive material-containing wastes are currently undecided, but contain radioactive material-containing wastes that can be stably stored and stored in various environments with specifications different from polyethylene HIC. If there is a container (hereinafter referred to as a storage container), the range of processing and disposal methods will be widened.

Conventionally, a concrete container has been used to accommodate radioactive material-containing waste.
For example, Patent Document 1 discloses a radioactive substance-containing waste container including an inner can that contains radioactive substance-containing waste, and a metal outer can that is filled with the inner can and sealed. Have been described. The inner can is added to cement, a powdery or spherical small steel ball group having an average particle diameter of 100 to 250 μm added in a weight ratio of 1 to 4 to the cement, and a weight ratio of 1 to 4 in the cement. And a powdery or spherical large steel ball group having an average particle diameter of 600 to 850 μm, and is composed of radiation shielding concrete having a density after curing of 4.0 g / cm ³ or more. This container has a two-layer structure consisting of an inner can and an outer can. The inner can has a high density and the small steel balls and the large steel balls are uniformly distributed. it can.

As a concrete material, steel fiber reinforced polymer impregnated concrete (hereinafter referred to as SFPIC) is known.
SFPIC is obtained by impregnating and polymerizing the pores of steel fiber reinforced concrete, and is excellent in airtightness compared with ordinary concrete. Therefore, the container made of SFPIC can prevent leakage to the outside even when a substance having deliquescence is housed inside. In addition, SFPIC is known to have higher strength than normal concrete, and the concrete used as a base material is an inorganic material and thus has a characteristic that it is chemically stable.

JP 2009-276194 A

Since the container is lifted by the crane in the process of transporting, the container may fall during transport. Moreover, since a container may be piled up vertically at the time of conveyance and storage, there exists a possibility of falling to the ground. If the storage container falls and an external force is applied to the storage container due to the impact, the storage container is damaged or broken, and the sealing property cannot be maintained, the radioactive material-containing waste leaks to the outside of the storage container. For this reason, the storage container is required to have high impact resistance to alleviate external force.
On the other hand, the container may contain radioactive material containing radioactive material or solid material containing contaminated water as waste containing radioactive material, and moisture containing radioactive material may leak from the inside over time. is there. Furthermore, the storage container may be stored outdoors for a long period of time, and water may permeate from the outside of the storage container, and the radioactive substance may leak out of the storage container through the water. Therefore, the container is required to have high hermeticity so that radioactive material-containing waste does not leak outside.

  It is an object of the present invention to provide a radioactive substance-containing waste container that has excellent impact resistance and can mitigate impact when dropped. Moreover, it aims at providing the radioactive substance containing waste container with high airtightness.

  The radioactive substance-containing waste container according to the present invention is filled between the inner container in which the radioactive substance-containing waste is accommodated, the outer container in which the inner container is disposed, and the inner container and the outer container. And a filler, wherein the strength of the filler is smaller than that of the inner container and the outer container.

  The radioactive substance-containing waste container according to the present invention is characterized in that the strength of the outer container is greater than that of the inner container.

  Further, in the radioactive substance-containing waste container according to the present invention, the outer container is made of metal, the inner container is polymer-impregnated concrete or steel fiber reinforced polymer-impregnated concrete, and the filler is any one of paste, mortar, and concrete. It is characterized by being.

  The radioactive substance-containing waste container according to the present invention is characterized in that the inner container contains a reinforcing bar.

  Further, in the radioactive substance-containing waste container according to the present invention, the outer container has a yield strength of 205 MPa to 400 MPa, the inner container has a compressive strength of 120 MPa to 250 MPa, and the filler has a compressive strength of 15 MPa to 60 MPa. It is characterized by that.

  The radioactive substance-containing waste container of the present invention has a three-layer structure including an outer container, a filler, and an inner container. When the radioactive substance-containing waste container receives a strong impact due to dropping while being transported by a crane, the outer container absorbs the external force, and the filler acts like a cushion. Therefore, a large external force is not applied to the inner container in which the radioactive substance-containing waste is accommodated, and the inner container can be prevented from being damaged or broken. Accordingly, the radioactive substance-containing waste container can prevent the radioactive substance-containing waste from leaking out of the inner container even when subjected to a strong impact.

  In the radioactive substance-containing waste container of the present invention, by making the strength of the outer container larger than that of the inner container, the outer container first absorbs external force, so the strength of the inner container does not have to be significantly increased. I'm sorry.

  In the radioactive substance-containing waste container of the present invention, the inner container is composed of polymer-impregnated concrete or steel fiber reinforced polymer-impregnated concrete, and therefore, impact resistance, denseness, and chemical stability compared to ordinary concrete. Is excellent. When the inner container is excellent in impact resistance, the outer container and the filler cannot absorb the external force, and even when the external force is applied to the inner container, the inner container can be prevented from being damaged or broken. Further, since the inner container is excellent in denseness, it is possible to prevent the contained radioactive substance-containing waste from permeating the inner container and leaking out of the inner container. Further, since the inner container has chemical stability, the inner container and the radioactive substance-containing waste do not cause a chemical reaction, and the inner container can be prevented from being deteriorated by the radioactive substance-containing waste.

Moreover, in the radioactive substance containing waste storage container of this invention, intensity | strength is securable even if the thickness is thin by making an outer side container metal. If the thickness can be reduced and the desired strength can be secured, the size of the outer container relative to the inner container's storage volume can be reduced, and more radioactive material-containing waste can be contained in a smaller-sized radioactive material-containing waste container. Can hold things.
Furthermore, any of paste, mortar, and concrete can be used for the filler. By using any one of paste, mortar, and concrete, it is possible to fill a filler that does not crack according to the gaps of various widths, and to ensure the strength of the filler.

  In the radioactive substance-containing waste container of the present invention, an inner container containing a reinforcing bar can be used. By including the reinforcing bars in the inner container, the strength of the inner container can be increased, and even when a large external force is applied to the inner container, the inner container can be prevented from being damaged or broken.

  In the radioactive substance-containing waste container according to the present invention, the outer container has a yield strength of 205 MPa to 400 MPa, the inner container has a compressive strength of 120 MPa to 205 MPa, and the filler has a compressive strength of 15 MPa to 60 MPa. Even when the container is subjected to a strong impact, the outer container and the filler can absorb the external force, so that the inner container can be prevented from being damaged or broken. Furthermore, even when the radioactive substance-containing waste container is vertically stacked at the time of storage or disposal, it can withstand the load applied to the radioactive substance-containing waste container.

It is sectional drawing of the radioactive substance containing waste storage container which concerns on embodiment of this invention. It is a figure which shows the outer side container of the radioactive substance containing waste storage container which concerns on embodiment of this invention. (A) Cross section of outer container, (b) Plan view of outer lid, (c) Plan view of outer side wall It is a figure which shows the inner side container of the radioactive substance containing waste storage container which concerns on embodiment of this invention. (A) Cross section of inner container, (b) Plan view of inner lid, (c) Plan view of small lid, (d) Plan view of inner side wall It is sectional drawing of the inner side container in which the reinforcing bar of the radioactive substance containing waste storage container which concerns on embodiment of this invention is contained. It is a figure which shows the filler of the radioactive substance containing waste storage container which concerns on embodiment of this invention. It is the figure which showed the procedure for manufacturing the radioactive substance containing waste storage container which concerns on embodiment of this invention. It is the figure which showed the procedure which accommodates the radioactive substance containing waste in the radioactive substance containing waste storage container which concerns on embodiment of this invention. It is the figure which showed the procedure which accommodates the radioactive substance containing waste in the radioactive substance containing waste storage container which concerns on embodiment of this invention.

A radioactive substance-containing waste container 1 (hereinafter referred to as a container 1) according to the present embodiment will be described with reference to FIGS.
The storage container 1 is a container that stores radioactive substance-containing waste, and has a three-layer structure as shown in FIG. The storage container 1 includes an inner container 30 in which radioactive substance-containing waste is stored, an outer container 10 in which the inner container 30 is disposed, and a filler that is filled between the inner container 30 and the outer container 10. 50. The strength of the filler 50 is designed to be smaller than that of the inner container 30 and the outer container 10.

[Outer container 10]
As shown in FIG. 2A, the outer container 10 has an outer lid portion 11, an outer side wall portion 12, and an outer bottom portion 13.
The outer container 10 is a metal cylindrical container. For the outer container 10, for example, a stainless steel plate can be used.
The outer lid portion 11 has a circular shape, and a lid-side flange portion 16 is formed at the lower end of the outer lid portion 11 (FIG. 2B). A plurality of through-holes 15 penetrating vertically are formed in the lid-side flange portion 16 at equal intervals (12 in this embodiment).
A sidewall flange 18 is formed at the upper end of the outer sidewall 12 (FIG. 2C). The side wall flange portion 18 is overlapped with the lid side flange portion 16 of the outer lid portion 11. A plurality of through holes 19 penetrating vertically are formed in the side wall side flange portion 18. The through holes 19 are respectively formed at positions corresponding to the through holes 15 of the outer lid portion 11. In addition, two sets of suspending portions 17 and 17 facing each other are formed on the outer periphery on the upper side of the outer side wall portion 12. The container 1 is transported by a crane with a wire connected to the hanging portion 17.
The outer bottom portion 13 is a disc having a diameter larger than the diameter of the outer side wall portion 12, and an outer edge thereof is wound around the lower end of the outer side wall portion 12 to be coupled to the outer side wall portion 12. An annular buffer member 20 is attached to the lower surface of the outer bottom portion 13 separately from the outer container 10.
The strength of the outer container 10 is greater than that of the inner container 30, and the yield strength of the outer container 10 is preferably 205 MPa or more and 400 MPa or less.

[Inner container 30]
The inner container 30 is disposed inside the outer container 10 and accommodates radioactive substance-containing waste. As shown in FIG. 3A, the inner container 30 has an inner lid portion 31, an inner side wall portion 32, and an inner bottom portion 33, and the inner container 30 faces the inner bottom portion 33 between the inner side wall portion 32 and the inner bottom portion 33. Thus, the haunch portion 35 is formed so that the inner diameter and the outer diameter of the inner container 30 are reduced. The haunch portion 35 is inclined on both the inner and outer sides of the inner container 30.
Moreover, the outer diameter of the inner container 30 is smaller than the inner diameter of the outer container 10, and the height of the inner container 30 is designed to be lower than the height of the outer container 10.
The inner container 30 is a cylindrical container, and the inner container 30 includes a polymer impregnated concrete (hereinafter referred to as PIC) or a steel fiber reinforced polymer impregnated concrete (hereinafter referred to as a PIC). , Written as SFPIC).
The thickness of the inner container 30 is designed to be 100 mm or less.

The inner lid part 31 has a circular shape, and the inner container 30 is sealed by being fitted to the inner side wall part 32 (FIG. 3B). A plurality of through-holes 36 penetrating vertically are formed on the circumference of the upper surface of the inner lid portion 31 (12 in this embodiment). In addition, a window portion 37 penetrating the lid portion 31 up and down is formed at the center of the inner lid portion 31. A plurality of holes 42 are formed around the window portion 37. A small lid 38 is attached to the window portion 37.
The small lid 38 is formed with a plurality of through holes 43 penetrating vertically, and is attached to the window portion 37 with bolts or the like through the through holes 43 (FIG. 3C).
A plurality of holes 34 are formed in the upper end surface of the inner side wall portion 32 (FIG. 3D). The hole 34 is formed at a position corresponding to the through hole 36.
Further, as shown in FIG. 4, the inner container 30 may be one that includes a reinforcing bar 39. The reinforcing bars 39 are provided in a spiral shape inside the inner side wall 32, and are provided in a mesh shape inside the inner bottom portion 33.
The compressive strength of the inner container 30 is preferably 120 MPa or more and 250 MPa or less.

[Filler 50]
As shown in FIG. 5A, the filler 50 is filled in a gap formed between the outer container 10 and the inner container 30. As the filler 50, a filler 50 having a lower strength than the outer container 10 and the inner container 30 is used. As the filler 50, any one of paste, mortar, and concrete can be used.
The term “concrete” as used herein refers to cement, water, fine aggregate, coarse aggregate, and admixtures added as necessary. These are kneaded, mixed by other methods, or hardened. Say something. Moreover, what does not contain a coarse aggregate among concrete is a mortar, and what does not contain a fine aggregate among mortar is a paste. The fine aggregate refers to an aggregate that passes through a 10 mm mesh screen all the time and passes through a 5 mm mesh screen by 85% or more. Coarse aggregate is an aggregate that remains 85% or more by mass on a 5 mm screen.
The filler 50 is filled in the gap between the outer container 10 and the inner container 30, and then hardens to form a layer. The layer of the filler 50 is disposed in an annular shape between the outer container 10 and the inner container 30 (FIG. 5B).
The selection of paste, mortar, or concrete can be selected depending on the width of the gap between the outer container 10 and the inner container 30. When the width of the gap is less than 5 cm, it is preferable to use a paste. If the paste has a thickness of 5 cm or more, the cured paste may be cracked. Therefore, when the gap width is 5 cm to 10 cm, it is preferable to use mortar. Further, when the mortar has a thickness of 10 cm or more, the cured mortar may be cracked. Therefore, when the width of the gap is 10 cm to 30 cm, it is preferable to use concrete.
Moreover, it is preferable that the compressive strength of the filler 50 is 15 MPa or more and 60 MPa or less.

Next, the manufacturing method of the storage container 1 and the procedure for storing the radioactive substance-containing waste in the storage container 1 will be described with reference to FIGS.
First, a raising member (not shown) is arranged on the outer bottom portion 13, and the inner container 30 is arranged inside the outer container 10 (FIG. 6A). Since the outer diameter of the inner container 30 is smaller than the inner diameter of the outer container 10, a gap is formed between the outer side wall part 12 and the inner side wall part 32. The inner container 30 is arranged inside the outer container 10 so that the widths of the gaps are substantially equal. Further, a gap is also formed between the outer bottom portion 13 and the inner bottom portion 33 by the raising member. Therefore, a gap is formed around the entire inner container 30.

Next, the filler 50 is poured from the gap and filled in the entire gap (FIG. 6B). The filler 50 is filled to the same height as the upper end surface of the inner side wall portion 32 of the inner container 30. The filler 50 hardens after a certain period of time and forms a layer of the filler 50.
Since the widths of the gaps between the outer sidewall portion 12 and the inner sidewall portion 32 are substantially equal, the layer of filler 50 between the outer sidewall portion 12 and the inner sidewall portion 32 has substantially the same thickness. On the other hand, since the haunch portion 35 is formed between the inner side wall portion 32 and the inner bottom portion 33 of the inner container 30, the outer side wall is located between the haunch portion 35 and the outer side wall portion 12 and the outer bottom portion 13. More filler 50 is filled than the gap between the portion 12 and the inner side wall portion 32 (or the outer bottom portion 13 and the inner bottom portion 33). Therefore, the layer of the filler 50 formed in the vicinity of the haunch portion 35 is thicker than the layer of the filler 50 in the gap between the inner side wall portion 32 and the inner bottom portion 33.

Next, a damming sponge and an epoxy resin adhesive 45 are provided on the entire upper end portion of the inner side wall portion 32, the inner lid portion 31 is set from above, and the inner lid portion 31 is adhered and fixed to the inner side wall portion 32 ( FIG. 6 (c)). Further, the inner lid portion 31 is fixed to the inner side wall portion 32 by a bolt 44. At this time, the inner lid portion 31 is fixed in a state where the small lid 38 is not provided.
Then, an annular damming ring 40 is provided on the upper surface of the inner lid portion 31, and the reinforcing material 41 is poured into a region formed by the damming ring 40 and the outer container 10 (FIG. 7A). At this time, the reinforcing member 41 covers the bolt 44 that fixes the inner lid portion 31 and the inner side wall portion 32, and is provided so as to have the same height as the upper end surface of the outer side wall portion 12, and is cured. The reinforcing material 41 can be mortar.

Next, the radioactive substance-containing waste is packed into the inside of the inner container 30 through the window 37 and accommodated (FIG. 7B). After the radioactive substance-containing waste is accommodated, the small lid 38 is set on the window 37 so that the hole 42 and the through hole 43 overlap each other, and is fixed with bolts, and the inner container 30 is sealed (FIG. 7C).
And the outer side cover part 11 is set to the upper end of the outer side wall part 12 so that the through-hole 15 and the through-hole 19 may overlap, and it fixes with a volt | bolt via the through-holes 15 and 19 (FIG. 8 (a)). Since the reinforcing member 41 is provided at the same height as the upper end surface of the outer side wall portion 32, it is in contact with the lower surface of the outer lid portion 11 and is disposed between the outer lid portion 11 and the inner lid portion 31 (FIG. 8). (B)).
As shown in FIG. 8 (c), the container 1 in which the radioactive substance-containing waste is accommodated has a wire attached to the hanging portion 17 and is transported by a crane.

  Next, the operation / effect of the container 1 will be described.

The storage container 1 according to the present embodiment is greatly characterized by having a three-layer structure including the outer container 10, the filler 50, and the inner container 30.
The container 1 receives a strong impact when it falls on the ground while being transported by a crane. When a large external force is applied to the container 1, the external force is first applied to the outer container 10. The outer container 10 absorbs this external force, but if this external force cannot be fully countered, the external force is then applied to the filler 50. Since the filler 50 is smaller than the strength of the outer container 10 and the inner container 30, it acts as a cushion. Therefore, the filler 50 absorbs external force, and no large external force is applied to the inner container 30 in which the radioactive substance-containing waste is accommodated.
Thus, when the outer container 10 and the filler 50 absorb external force, a large external force is not applied to the inner container 30, and the inner container 30 can be prevented from being damaged or broken.
Therefore, the storage container 1 has a three-layer structure, and by placing the filler 50 in the middle, the radioactive substance-containing waste can leak out of the inner container 30 even when subjected to a strong impact due to dropping or the like. Can be prevented.

The inner container 30 of the storage container 1 according to the present embodiment is composed of PIC or SFPIC. PIC and SFPIC are superior in impact resistance compared to ordinary concrete. Therefore, even when the outer container 10 and the filler 50 cannot absorb the force and the force is applied to the inner container 30, it is possible to prevent the inner container 30 from being damaged or broken.
Moreover, PIC and SFPIC are excellent in denseness compared with normal concrete. Therefore, even if radioactive substance-containing waste is stored in the inner container 30, it is possible to prevent the radioactive substance-containing waste from permeating the inner container 30 and leaking out of the inner container 30. Further, even when water enters from the outside of the outer container 10, the water does not penetrate from the outside of the inner container 30 to the inside.
Moreover, PIC and SFPIC are excellent in chemical stability compared with normal concrete. Therefore, the inner container 30 does not cause a chemical reaction with the contained radioactive substance-containing waste, and the inner container 30 can be prevented from being deteriorated by the radioactive substance-containing waste.
From the above, by configuring the inner container 30 with PIC or SFPIC, it is possible to reliably prevent the radioactive material-containing waste from leaking out of the inner container 30.

Moreover, the outer container 10 of the storage container 1 according to the present embodiment can be made of metal. By making the outer container 10 made of metal, the strength can be ensured even if the thickness is small. If the thickness can be reduced and a desired strength can be ensured, the size of the storage container 1 relative to the storage volume of the inner container 10 can be reduced. If the size of the storage container 1 with respect to the storage volume of the inner container 10 can be reduced, more radioactive material-containing waste can be stored in the storage container 1 having a smaller size.
Furthermore, any of paste, mortar, and concrete can be used for the filler 50 of the container 1 according to the present embodiment. When the width of the gap between the outer container 10 and the inner container 30 is less than 5 cm, which is relatively narrow, it is preferable to use a paste. Since the paste has a lower viscosity than the other two fillers 50, it can be easily filled even in a small gap.
When the thickness of the paste is 5 cm or more, cracks may occur. Therefore, when the width of the gap is 5 cm to 10 cm, it is preferable to use mortar. In addition, when the thickness of the mortar is 10 cm or more, there is a possibility of causing cracks. Therefore, when the width of the gap is wide from 10 cm to 30 cm, it is preferable to use concrete.
As described above, by using any one of paste, mortar, and concrete, it is possible to fill the filler 50 that does not cause cracks according to the gaps of various widths, and to ensure the strength of the filler 50.

The inner container 30 including the reinforcing bars 39 can be used for the container 1 according to the present embodiment. Since the inner container 30 includes the reinforcing bar 39, the strength of the inner container 30 can be increased. When the container 1 receives a strong impact or when the outer container 10 and the filler 50 cannot absorb the external force, a strong external force is applied to the inner container 30.
Even when a strong force is applied to the inner container, since the inner container 30 includes the reinforcing bar 39, the strength of the inner container 30 can be secured, and the inner container 30 can be prevented from being damaged or broken. Therefore, it is possible to more reliably prevent the radioactive substance-containing waste from leaking out of the inner container 30.

In the storage container 1 according to this embodiment, the yield strength of the outer container 10 can be 205 MPa to 400 MPa, the compressive strength of the inner container 30 can be 120 MPa to 250 MPa, and the compressive strength of the filler can be 15 MPa to 60 MPa. Since each member has such strength, even when the container 1 receives a strong impact, the outer container 10 and the filler 50 absorb external force, so that the inner container 30 can be prevented from being damaged or broken. .
Furthermore, even when the storage container 1 is stacked vertically, it can withstand the load applied to the storage container 1.

  A buffer member 20 is provided on the outer bottom 13 of the outer container 10 of the container 1 according to the present embodiment. Since the buffer member 20 is a separate member from the outer container 10, the outer container 10 is not subjected to stress from the buffer member 20 when the buffer member 20 receives an external force. Therefore, the outer container 10 can be prevented from being deformed by an external force.

  A haunch portion 35 is formed between the inner side wall portion 32 and the inner bottom portion 33 of the inner container 30 of the storage container 1 according to the present embodiment. Therefore, the layer of the filler 50 in the vicinity of the haunch portion 35 can be formed thicker than when the haunch portion 35 is not provided. Then, when the container 1 receives an external force from the edge portion where the outer side wall portion 12 and the outer bottom portion 13 are joined, the filler 50 exerts a greater force than when the haunch portion 35 is not formed. Can be absorbed. Therefore, the external force applied to the inner container 30 can be reduced.

A reinforcing member 41 is provided between the outer lid portion 11 and the inner lid portion 31 of the storage container 1 according to the present embodiment. Therefore, the upward movement of the inner container 30 is restricted. Then, when the receiving container 1 receives an external force from below, the movement of the inner container 30 is restricted upward, so that the inner lid 31 can be prevented from colliding with the outer lid 11. Therefore, it is possible to prevent the inner container 30 from being damaged or destroyed.
Further, the reinforcing member 41 is poured onto a bolt that fixes the inner lid portion 31 and the inner side wall portion 32 and is cured. Therefore, the inner side cover part 31 and the inner side wall part 32 are fixed more firmly.

Although the present embodiment has been described above, the configuration described in the above embodiment can be selected or changed to other configurations as appropriate without departing from the gist of the present invention. . In the present embodiment, the cylindrical storage container 1 has been described. However, the shape of the storage container 1 is not limited to a cylindrical shape, and may be a rectangular cylindrical storage container.
In the present embodiment, the annular buffer member 20 has been described. However, the buffer member 20 is a separate member from the outer container 10 and is not limited to an annular shape as long as it is a member that absorbs impact.

1 Radioactive substance-containing waste container (container)
DESCRIPTION OF SYMBOLS 10 Outer container 11 Outer cover part 12 Outer side wall part 13 Outer bottom part 15 Through hole 16 Lid side flange part 17 Hanging part 18 Side wall side flange part 19 Through hole 20 Buffer member 30 Inner container 31 Inner cover part 32 Inner side wall part 33 Inner bottom part 34 Hole 35 Haunch part 36 Through-hole 37 Window part 38 Small window 39 Reinforcing bar 40 Damping ring 41 Reinforcement material 42 Hole 43 Through-hole 44 Bolt 45 Epoxy resin adhesive 50 Filler

Claims (5)

An inner container for containing radioactive material-containing waste;
The inner container is an outer container disposed therein;
A filler filled between the inner container and the outer container,
The filler has a lower strength than the inner and outer containers;
A radioactive material-containing waste container. The strength of the outer container is greater than that of the inner container,
The radioactive substance-containing waste container according to claim 1. The outer container is made of metal;
The inner container is polymer impregnated concrete or steel fiber reinforced polymer impregnated concrete;
The filler is any one of paste, mortar, and concrete.
The radioactive substance-containing waste container according to claim 1 or 2. The inner container contains a reinforcing bar,
The radioactive substance-containing waste container according to any one of claims 1 to 3, wherein the container is a radioactive substance-containing waste container. The yield strength of the outer container is 205 MPa to 400 MPa,
The compressive strength of the inner container is 120 MPa to 250 MPa,
The compressive strength of the filler is 15 MPa to 60 MPa.
The radioactive substance-containing waste container according to any one of claims 1 to 4, wherein the container is a radioactive substance-containing waste container.

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