JP2020129009A - Public exposure protection, occupational exposure protection and medical exposure protection using rock wall material and radiation shielding reduction body which is compact of rock wall material, and radioactive water treatment - Google Patents

Abstract

To provide a radiation transmission reducing material useful for the public exposure protection, the occupational exposure protection, and the medical exposure protection of nuclide radiation using mineral fibers and artificial mineral fibers which are lightweight and to provide a structure relating to radioactive waste treatment.SOLUTION: A radiation shielding reducing base material and a radioactive material attenuating body are characterized in that a material fiber having transmission reduction of radiation is rock wool. Contaminated water containing radioactive wastes emitting radiation, environmental radioactive pollutants and radioactive materials is hydrated into a lightweight rock wool compact which is excellent in the water content capable of keeping the contaminated water in a static state or the rock wool compact is stored in a radiation transmission reducing container.SELECTED DRAWING: Figure 17

Description

The present invention relates to public radiation exposure protection, occupational radiation exposure protection, medical radiation exposure protection, and radioactive waste treatment for reduction of radiation transmission of radioactive materials, reduction of radiation transmission emitted from environmental radioactive pollutants.

It is well known that an object having a larger atomic number is more effective in blocking radiation, mainly gamma rays. Also, the larger the atomic number, the heavier the object. If the weight of the radiation shield is heavy, the burden on transportation and work will increase and the cost will increase. Also, the larger the atomic number, the more expensive it is. Further, various costs for manufacturing a structure having mechanical strength for shielding environmental radioactive pollutants, radioactive wastes and radioactive substances by using an object having a large atomic number are high. For this reason, it is desired to develop a lightweight radiation shielding material which is inexpensive and contains a substance having a large atomic number.

Japanese Patent Application Laid-Open No. 2015-125143 discloses that the structure has rock wool and mineral fibers as a water-retaining base material, and it is presumed that the effect of reducing radiation transmission is expected by containing water. Further, the radiation transmission reducing effect of the document is shown to be the radiation shielding effect by the weight of the water-retaining base material. That is, the invention of the document is an invention useful for radiation shielding by the water-retaining base material and the water content integrated with the structural material, but predicting to what extent rock wool and mineral fibers themselves can obtain a radiation transmission reducing effect. Not not.

In that respect, the present invention is not intended to be included in the invention of the document, because the invention invented that the molded product obtained by compressing rockwool or rockwool exerts an effect of reducing radiation shielding. Is the invention of.
In addition, although the invention of a container that stores radioactive substances, environmental radioactive pollutants, and radioactive wastes is specified in the document, the cross-sectional shape of the outer wall plate body constituting the container of the present invention is mountain fold or valley fold. There is a certain bellows structure plate body, a folded plate-shaped body, a new invention characterized by being unevenly folded, the outer wall plate body is a thin plate, but there is sufficient mechanical strength for a load from above, Stacking of multiple containers is possible.

That is, in the field, a heavy container using a metal having a large atomic number and a concrete container having a large wall thickness were generally used, but the container of the present invention is a structural plate as shown above. It is an invention of a new lightweight container that makes it possible to reduce the weight, reduce the manufacturing cost, and effectively utilize the space above the rare land that is essential for waste treatment.

The purpose of the present invention is to provide a radiation transmission reduction material useful for public exposure protection of nuclide radiation, occupational exposure protection, and medical exposure protection using mineral fibers and artificial mineral fibers, which are lightweight materials, and a structure related to radioactive waste treatment. To do.

The radiation shielding reduction base material and the radioactive substance attenuating body of the invention of claim 1 are the radiation shielding reduction base material and the radioactive substance attenuating body characterized in that the material having the reduction of the transmission of radiation is rock wool.

In the radiation shielding reduction base material and the radioactive substance attenuator of the invention of claim 2, the density of the rock wool material is 10 kg/m 3 or more, and the radiation shielding reduction base material and the radioactive substance of claim 1. It is an attenuator.

The chemical composition (wt%) of the radiation shielding reducer and the radioactive substance attenuator of the invention of claim 3 is such that the content of SiO2 is 35 to 45%, the content of Al2O3 is 10 to 20%, and the content of Fe2O3 is 0 to 3 %, MgO content 4 to 8%, CaO content 30 to 40, MnO content 0 to 1%, which is a rockwool, The radiation shield according to claim 1 or 2, A reduction substrate and a radioactive material attenuator.

The radiation shielding reducing body and the radioactive substance attenuating body according to the invention of claim 4 compress mineral rock containing rock wool or granular cotton of rock wool so as to have a high density, and the density is 10 kg/m3 to 4000 kg/m3. 5. The radiation shielding/reducing base material and the radioactive substance attenuating body according to claim 1, which are molded to have any one of the weight values of.

The radiation shielding reducing body and the radioactive substance attenuating body of the invention of claim 5 are formed by compressing or squeezing so that the water content of mineral fibers or the water content of rock wool remains. The radiation shielding/reducing base material and the radioactive substance attenuator according to any one of claims 1 to 4.

The radiation shielding reduction body and the radioactive substance attenuating body of the invention of claim 6 are a mixture of a granular molded body of rock wool and a radioactive substance or a contaminant contaminated with the radioactive substance, or a granular body or a mixture of the mixture. Microcrystalline carbon in powder form, dolomite, quicklime, talc, compressed by applying pressure to a mixed constituent base material obtained by mixing any of the above, or the constituent base material in the vertical direction or in the lateral direction or in whole. A radiation shielding/reducing base material and a radioactive substance attenuating body, characterized in that they are formed by forming a plurality of layers in a predetermined direction, laminating and compressing them.

In the radiation shielding/reducing base material and the radioactive substance attenuator of the invention of claim 7, water is formed on the surface of the microcrystalline carbon in the form of powder having a particle size of 2 mm to 0.1 mm or 50 μm to 1 μm. A radiation shielding and reducing base material and a radioactive substance attenuating body, characterized in that

The radiation shielding/reducing base material and the radioactive substance attenuator according to the invention of claim 8 are formed by being hydrated so that water or water containing a radioactive substance remains. The radiation shielding/reducing base material and the radioactive substance attenuator according to item 9.

The radiation shielding reduction base material and the radioactive substance attenuator container according to the invention of claim 9 are inside the container configured by a hermetically-sealing lid so that the filler inside the container does not leak out of the container. Any one of them or a mixed constituent base material obtained by mixing a plurality of kinds of claims 1 to 8 is filled, and radioactive waste is inserted and mixed into the mixed constituent filled base material, or a radioactive substance is added. A radiation shielding reduction base material and a radioactive substance attenuator container characterized by injecting water contained therein.

The radiation shielding reduction base material and the radioactive substance attenuating body bag body according to the invention of claim 10 constitute a sealing lid so that the filling material inside the bag body does not leak to the outside of the bag body, or the bag body filling opening end is heated. The inside of the crimped bag is filled with a mixed constituent base material obtained by mixing any one of claims 1 to 9 or any one of claims 1 to 8, and mixing the mixture. A radiation shielding reduction base material and a radioactive material attenuator bag, which are characterized in that a radioactive material is inserted into and mixed with a constituent filling base material or water containing the radioactive material is poured.

The radiation shielding reduction and radioactive substance attenuation body container or bag according to the invention of claim 11 has a function of communicating the internal space of the container and the bag with the outside, or a part of a lid attached to the container and the bag. Since it has a function of communicating the internal space with the outside, at least one of a water inlet, an air vent, and a gas vent is provided in a material portion of any one of the container, the bag, and the lid. The radiation shielding/reducing base material and the radioactive substance attenuator container or bag according to claim 9, 10 or 12 to 17.

In the container for containing environmental radioactive contaminants and radioactive substances according to the invention of claim 12, the outer wall plate body made of at least one body is erected at the upper end portion of the bottom wall board made of at least one body, Formed between the upper and lower ends of the outer side wall plate in the axial direction are fitting parts that can be connected to the same or the same outer wall plate to allow connection with the other outer wall plate. Container container shape or box shape that is formed,
Inside the inner side wall plate and the gap between the inner side wall plate and the outer side wall plate arranged on the center side of the bottom wall plate so as to retract from the outer side wall plate toward the center side of the bottom wall plate. In a container to be stored or in a package, a radioactive material or a contaminated material contaminated with a packed radioactive material, a gap area between an upper surface and a lower portion of a storage object, a lower area of a lower surface of the storage material and an upper surface of the bottom wall plate. A plurality of the radiation shielding reduction base material and the radioactive substance attenuator container according to claim 9, 10 or 11 are provided, or a plurality of radiation shielding reduction and radioactive substance attenuator bag bodies are provided. It is a container that stores environmental radioactive contaminants and radioactive substances.

In the radiation shielding/reducing base material and the radioactive substance attenuation container body according to the invention of claim 13, the lower wall portions of the plurality of outer wall plate bodies and the upper end portions of the bottom wall are fitted to each other, so that the plurality of outer wall plate bodies and the plurality of outer wall plate bodies are formed. The container is formed in a container shape or a box shape in which a fitting portion that enables the connection of the bottom wall plates is formed, and the container shape or the box shape is formed by the plurality of outer wall plate bodies, the bottom wall, and the inner side. The radiation shielding/reducing base material and the radioactive material attenuation container body according to claim 12, which are characterized by being configured as an assembling/unpacking system that enables separation from the wall plate body.

In the radiation shielding reduction base material and the radioactive material attenuation container body of the invention of claim 14, the outer side wall plate body is a metal plate, a resin plate, a plate body formed by combining and processing a carbon fiber and a resin, and a hollow structure shaped plate. Body or a metal plate, a resin plate, or a plate body formed by combining and processing a carbon fiber and a resin, is divided into equal parts multiple times, and is a bellows structure plate body that is a mountain fold or a valley fold, or a folded plate shape, unevenness. The radiation shielding/reducing base material and the radioactive material attenuation container body according to claim 12 or 13, which is a folded structural plate body.

In the radiation shielding reduction base material and the radioactive substance attenuation container body of the invention of claim 15, the outer wall plate body and the inner wall plate body are bellows structures in which a resin plate is equally divided into a plurality of mountain folds and valley folds. Plate or folded plate, hollow structure plate, unevenly folded metal plate, resin plate, plate formed by combining metal and resin, glass plate, combined processing of carbon fiber and resin Any of the following plate bodies, and any one of a heat insulating material, a hollow structure plate, and a plate-shaped body is provided on the inner side surface region of the plate body or on the inner side surface of the outer wall plate body according to claim 13. The radiation shielding/reducing base material and the radioactive material attenuation container body according to claim 11.

The radiation shielding reduction base material and the radioactive substance attenuation container body of the invention of claim 16 are one of a bellows structure plate body having a mountain fold and a valley fold in cross section, a folded plate body, and an outer wall plate body having an uneven fold. One of the one end of the cross-sectional shape or the fitting member at one end of the cross-sectional shape, a flat plate (belt), a chevron plate (angle), an unequal angle chevron, a channel (channel), and a hat Welding, bonding, heat welding, fixing any of the screws, bolts, nuts,
On the upper surface of the end portion of the bottom wall plate, a chevron plate with a bending plate angle of right angle or less for fitting the fitting member, an unequal angle chevron with a bending plate angle of right angle or less, a channel, a hat. 16. The radiation shielding/reducing base material according to claim 12, wherein any one of them is provided by a method of fixing any one of welding, adhesion, heat welding, rivets, screws, bolts, and nuts. It is a radioactive material attenuation container body.

In the radiation shielding/reducing base material and the radioactive substance attenuation container body according to the invention of claim 17, a lid is provided on an upper end surface of the outer wall plate, wherein the outer wall plate is provided on an upper surface of an end portion of the bottom wall plate. , Of flat plate (band), chevron plate (angle), unequal angle chevron, channel (channel), and hat that have through holes for mounting bolts and nut fixtures for fixing It is provided with any of the fixing methods of welding, adhesion, heat welding, rivets, screws, bolts, nuts,
17. The radiation shield according to claim 12, wherein a through hole for providing a plurality of bolt and nut fixing tools is formed in an end portion of the lid body installed on the upper surface of the outer wall plate. A reduction base material and a radioactive material attenuation container body.

In the radiation shielding/reducing base material and the radioactive substance attenuator of the invention of claim 18, the radiation transmission reducing fiber is any one of an inorganic fiber and an organic fiber, and the radiation transmission reducing fiber is in any one of claims 1 to 8. A radiation shielding reduction base material and a radioactive substance attenuator characterized by coating any one of the surfaces of the above.

In the radiation shielding reduction base material and the radioactive substance attenuator of the invention of claim 19, a mineral having a high electric resistance value and an excellent electric insulation property, or a material having a reduction in transmission of radiation belonging to the mineral is dolomite or talc (talc). ) Is a powder or granules made of any of the above minerals, dolomite, and talc (talc), and a radiation shielding reduction base material and a radioactive substance attenuator.

The radiation shielding reduction base material and the radioactive substance attenuator of the invention of claim 19 are particles of calcinated or semi-calcined dolomite or talc which is a powder having a particle size of 5 mm to 0.1 mm or 50 μm to 1 μm. Talc) is a radiation shielding/reducing base material and a radioactive substance attenuating body, characterized in that water is attached to any surface thereof.

As described above, according to the radiation shielding reduction base material, the radioactive substance attenuator, the radioactive substance attenuator container or bag, and the radioactive substance attenuator container body of the present invention, a molded article made of a rock wool material and a rock wool material is formed. The chemical composition (% by weight) is as follows: SiO2 content 35 to 45%, Al2O3 content 10 to 20%, Fe2O3 content 0 to 3%, MgO content 4 to 8%, CaO content Since the content of Mn0 is 30 to 40 and the content of Mn0 is 0 to 1%, a radiation shielding effect is exhibited.
As a radiation shielding reduction example, a 15 cm thick rock wool granular material (density: 0.
2g/cm3) was compressed to form a mixed molded body with a density of 0.30 to 0.36g/cm3 on the surface of the land where radiation is radiating from the ground, and as a result, the air dose immediately after coating was 35 to 40. It was confirmed by the monitoring post (installation location, latitude 37.775834 longitude 140, 44704 height 50 cm) that the Nuclear Regulatory Commission manages and measures that the reduction has been reduced by about %. In addition, the measurement similar to the above is carried out on the land where the radiation is radiated in the vicinity of the installation place of the monitoring post to confirm the radiation transmission reducing effect of the rockwool fiber molded body.
Also, the higher the density of rockwool, the greater the number of rockwool fibers in a unit volume and the increase in air flow resistance, resulting in an extremely high electrical resistance value and increased electrical insulation. Since it can be assumed to absorb, it has a radiation shielding effect.
Further, the present invention can be utilized in various radiation shielding applications. Moreover, since it is lightweight, the burden of transportation and work is reduced.
Further, the rock wool fiber material and the molded product of the present invention are roofs, walls, doors, floors of building structures for storing and storing radioactive waste, or radiation protection suits, protective aprons, shelters and medical equipment that emits radiation. It also has a synergistic effect that can be used as a radiation protection material for facility walls, roofs, and floors.

FIG. 1 is a sectional view according to Embodiments 1 to 4 of the present invention. FIG. 2 is a sectional view according to the fifth embodiment of the present invention. FIG. 3 is a sectional view according to the sixth embodiment of the present invention. FIG. 4 is a sectional view according to the seventh embodiment of the present invention. FIG. 5 is a sectional view according to Embodiments 6 and 8 of the present invention. FIG. 6 is a sectional view according to Embodiments 10 and 11 of the present invention. FIG. 7 is a sectional view according to Embodiment 10 of the present invention. FIG. 8 is a perspective view according to Embodiments 9.10 and 11 of the present invention. FIG. 9 is a perspective view according to Embodiment 9.10 of the present invention. FIG. 10 is a perspective view according to Embodiments 9, 10, and 11 of the present invention. FIG. 11 is a perspective view according to Embodiments 9, 10, and 11 of the present invention. FIG. 12 is a perspective view according to Embodiments 9, 10, and 11 of the present invention. FIG. 13 is a perspective view according to Embodiments 9, 10, and 11 of the present invention. FIG. 14 is a perspective view according to Embodiments 11 to 17 of the present invention. FIG. 15 is a sectional view according to Embodiments 13 and 14 of the present invention. FIG. 16 is a perspective view according to Embodiments 11 to 17 of the present invention. FIG. 17 is a perspective view according to Embodiments 11 to 17 of the present invention. FIG. 18 is a partial sectional view according to Embodiments 11 to 17 of the present invention. FIG. 19 is a sectional view according to Embodiments 11 to 17 of the present invention. FIG. 20 is a sectional view according to Embodiments 11 to 17 of the present invention. 21 is a sectional view and a perspective view according to Embodiments 11 to 17 of the present invention. 22 is a sectional view according to Embodiments 9, 10, and 11 of the present invention. FIG. 23 is a sectional view according to another embodiment.

<First Embodiment>

A radiation shielding material and a radioactive material attenuator, characterized in that the material having a reduction in the transmission of radiation is rock wool.

Rockwool fibers have fine pores and voids, so it can be presumed that they have a function of absorbing electron waves, which is preferable for radiation shielding.
In addition, artificial mineral fibers that do not constitute a bonding agent in fiber molding are not affected by the environment and are hardly deteriorated, and thus are preferable for permanent radiation shielding.

<Second Embodiment>
The radiation shielding reduction base material and the radioactive substance attenuator according to claim 1, wherein the rock wool material has a density of 10 kg/m 3 or more, which is preferable because it can be a lightweight shield.
It is also useful because it has excellent fire resistance and can withstand use in a high temperature range.
FIG. 1 is a diagram showing the difference in the density of the rock wool granular material and the difference in the particle shape due to compression processing.

<Third Embodiment>
The chemical composition (% by weight) is as follows: SiO2 content 35 to 45%, Al2O3 content 10 to 20%, Fe2O3 content 0 to 3%, MgO content 4 to 8%, CaO content 30. 40, MnO is a rockwool containing 0 to 1% of MnO, and the radiation shielding material and the radioactive substance attenuator according to claim 1 or 2, which are useful for radiation shielding. It is suitable for shielding reduction because it contains the material.

<Fourth Embodiment>
A mineral fiber containing rock wool or granular cotton of rock wool is compressed to a high density and molded into a weight value of any of 10 kg/m3 to 4000 kg/m3. The radiation shielding reduction base material and the radioactive substance attenuator according to items 1 to 3 are preferable because the radiation shielding effect is further exhibited by compression molding as described above.

Further, rock wool is easy to be compressed because basalt and other natural minerals, iron furnace slag, and blast furnace slag are the main raw materials. The higher the density of rockwool, the more the number of rockwool fibers in a unit volume increases and the resistance of air flow increases, so that the electric resistance value becomes extremely high and the electric insulating property increases, which is preferable for shielding radiation.

Further, as the molding method, it is preferable to compression-mold the rock wool fiber itself using a known compression machine or heavy machine, but the method is not limited to this method, and the bonding material or resin is locked during compression. It may be sprayed and added to the wool fiber to be molded.
Further, for example, a form in which inorganic fibers or organic fibers are mixed and compression molded is also possible.

<Fifth Embodiment>
5. The radiation shielding material according to claim 1, which is formed by compressing or squeezing so that the water content of mineral fibers or the water content of rock wool remains. The radioactive substance attenuator is preferable because it contains water, which is a compound of hydrogen and oxygen that is preferable for shielding neutron rays.
In addition, rock wool containing water can be reused for soil improvement and green soil at the time of disposal, so it is desirable for waste reduction.

<Sixth Embodiment>
A mixture of a rock wool granular molded product and a radioactive substance or a contaminant contaminated with a radioactive substance, or a microcrystalline carbon, dolomite, quicklime, talc, or boron of a granular or powdered form in the mixture. Compressed by applying pressure to a mixed constituent base material obtained by mixing any of the above, or by forming a plurality of layers of the constituent base material in the vertical direction, lateral direction, or all directions to laminate compression and molding. The radiation shielding reduction base material and the radioactive substance attenuator characterized by being mixed with any of dolomite, quick lime, talc, and boron are preferable for shielding radiation.

In addition, dolomite and talc each have the effect of contributing to the shielding of radiation. The reason for this is that, as described above in the rock wool molded product, it has a high electric resistance value and excellent electric insulation property, and therefore, it may be formed in multiple layers with the rock wool granular molded product.

<Seventh Embodiment>
Radiation-shielding-reducing base material and radioactive substance characterized in that water is attached to the surface of powdery microcrystalline carbon having a particle diameter of 2 mm to 0.1 mm or 50 μm to 1 μm. The attenuator is preferable because it can be presumed that water is contained on the surface or pores of the activated carbon and that it is useful for shielding radiation due to the ionic effect of the activated carbon.

<Eighth Embodiment>
10. The radiation shielding/reducing base material and the radioactive substance attenuating body according to claim 1, wherein the water or the water containing the radioactive substance is formed so as to remain so as to remain. It is preferable for stable storage and long-term storage because it is possible to keep water containing radioactive substances in excellent rock wool in a static state.

<Ninth Embodiment>
Any one of claims 1 to 8 or a plurality of kinds of claims 1 to 8 are provided inside the container in which a hermetically-sealed lid is configured so that the filling material inside the container does not leak to the outside of the container. A radiation shielding reduction base material and a radioactive material characterized by filling a mixed constituent base material obtained by mixing and inserting and mixing radioactive waste into the mixed constituent filling base material or injecting water containing a radioactive material. Attenuator container is made by pouring radioactive waste or water containing radioactive material into a container selected from plastic, metal, glass, carbon fiber and resin, stone composite substrate, stone, concrete, wood material. Suitable for stable storage and storage.

Further, when designing a concrete container, it is a well-known high water-tightness concrete, and bubbles inside the concrete, particles of ordinary cement that can form extremely few voids, and finer silica material than particles of cement are distributed among the particles of cement. If concrete is selected, the diffusion coefficient of water will be 1/9 when comparing the diffusion coefficient of conventional concrete with that of water. It is possible to manufacture a container that can reduce evapotranspiration from stored items and steam deterioration of the environment at the installation site, and can have a service life of 300 years. Suitable for long-term storage of waste.
It is more preferable to select a container formed by combining a container of such concrete with a small number of voids, a container of carbon fiber, a resin, and a stone to form a multilayer, because the service life is further increased.
In addition, a box made by hollowing out stones and minerals that were made by ancestors from ancient times, and a box made of stone and mineral plate-like bodies on the bottom wall and side walls and joining their ends are also radioactive. Suitable for long-term storage of waste.
Further, a container in which a stainless steel container and a resin container are stacked in multiple layers is also preferable.

<Tenth Embodiment>
10. The bag according to claim 1, wherein a sealing lid is configured to prevent the filling material inside the bag from leaking out of the bag, or inside the bag formed by thermocompressing the opening end of the bag filling opening. Alternatively, a mixed constituent base material obtained by mixing any one of claims 1 to 8 is filled and a radioactive substance is inserted and mixed into the mixed constituent filled base material, or water containing a radioactive substance is injected. The radiation shielding reduction base material and the radioactive substance attenuator bag characterized by the above are selected from bags in the form of polyolefin, synthetic resin of fluororesin or synthetic resin or a metal foil coated on synthetic resin. When done, it is preferable for storage and storage of radioactive waste or water containing radioactive substances. In addition, as the material of the bag body, a material having both waterproof property, durability and tensile strength may be selected.

<Eleventh Embodiment>
The container, the bag body, and the lid body have a function of communicating the inner space and the outside of the container and the bag body, or a part of the lid attached to the container and the bag body have a function of communicating the inner space and the outer body. 18. At least one of a water injection port, an air vent port, and a gas vent port is provided in any one of the material parts of the above. The radiation shielding reduction base material and the radioactive substance attenuator container or bag are preferable because they can discharge gases and water generated inside the container or bag to the outside. In addition, as a method of fixing the members of the water inlet, air vent, and gas vent to the container or bag, attach them by a known method that is compatible with the materials of the water inlet, air vent, gas vent, and container or bag. Good. For example, if the material is resin, thermocompression bonding and selection of an adhesive are preferable, and if the material is metal, rivets and welding are preferable.

<Twelfth Embodiment>
An outer wall plate body made of at least one body is erected at an upper end portion of a bottom wall plate body made of at least one body, and the same or the same other upper and lower axial end portions of the outer wall plate body are provided. A container container shape or a box shape formed by forming a fitting portion that enables connection with the other outer wall plate body by fitting with the outer side wall plate,
Inside the inner side wall plate and the gap between the inner side wall plate and the outer side wall plate arranged on the center side of the bottom wall plate so as to retract from the outer side wall plate toward the center side of the bottom wall plate. In a container to be stored or in a package, a radioactive material or a contaminated material contaminated with a packed radioactive material, a gap area between an upper surface and a lower portion of a storage object, a lower area of a lower surface of the storage material and an upper surface of the bottom wall plate. A plurality of radiation shielding reduction base materials and radioactive substance attenuator containers according to claim 9, 10 or 11 are provided, or a plurality of radiation shielding reduction base materials and radioactive substance attenuator bag bodies are provided. A container for storing environmental radioactive contaminants and radioactive substances is preferable because it requires less work personnel for assembly and unpacking.

The material of the outer wall plate, the bottom wall plate, the inner wall plate, and the container body housed inside the inner wall plate constructed in this embodiment will be described in the above-described ninth embodiment ([0042]. To [0043]).
In addition, at the place where the outer wall plate, bottom wall plate, and inner wall plate are fitted or fixed, use screws, bolts, nuts, and full-threaded rods to fix the fitting position or other fixing points It is preferable to fix it.

<Thirteenth Embodiment>
A container shape in which a fitting portion for connecting the plurality of outer wall plates to the bottom wall plate is formed by fitting the lower end portions of the plurality of outer wall plate bodies to the bottom wall upper surface end portion. Alternatively, the container-shaped or box-shaped outer wall plate, the bottom wall, and the inner wall plate can be separated from each other to form an assembly or unpacking method. The radiation shielding reduction base material and the radioactive material attenuation container body according to claim 12 are characterized in that the number of workers for assembling and unpacking may be small.

The material of the outer wall plate, the bottom wall plate, the inner wall plate, and the container body housed inside the inner wall plate constructed in this embodiment is the same as the material described in the ninth embodiment. It is preferable to select any of the above.
In addition, as described in the twelfth embodiment, the outer wall plate body, the bottom wall plate, and the inner wall plate are fitted or fixed with screws, bolts, nuts, and full threaded rods. It is preferable to fix the place or other place to be fixed.

<Fourteenth Embodiment>
The outer wall plate is a metal plate, a resin plate, a plate body obtained by processing a carbon fiber and a resin in combination, a hollow structural shape plate body, or a metal plate, a resin plate, a carbon fiber and a resin being processed in combination. 14. A bellows structure plate body that is a mountain fold, a valley fold, or a fold plate shape or a structure plate body that is unevenly folded, in which any of the following plate bodies is equally divided into a plurality of times. The radiation shielding reduction base material and the radioactive material attenuation container body of (1) are preferable because the number of workers for assembling and unpacking is small.
In addition, the same container body can be stacked in a plurality by mechanical strength, which is preferable.

For this bellows structure plate body, a metal plate having a thickness of about 0.3 mm to 2 mm can be selected. Even with such a thickness, the container body is designed such that the weight of stored items can be up to 3000 kg and the total load of stacking can be up to 8000 kg. Since it can be manufactured, it is preferable for weight reduction.

<Fifteenth Embodiment>
The outer side wall plate and the inner side wall plate are a corrugated structure plate body that is a mountain fold, a valley fold, or a fold plate-shaped body, a hollow structure-shaped plate body, and a metal plate that is unevenly folded, in which the resin plate is equally divided into a plurality of times. A plate, a resin plate, a plate formed by combining and processing a metal and a resin, a glass plate, or a plate formed by combining and processing a carbon fiber and a resin, and an inner surface region of the plate or claim Item 13. The radiation shielding/reducing base material and radioactivity according to any one of items 11 to 13, wherein any one of a heat insulating material, a hollow structure plate, and a plate-like member is provided on the inner surface of the outer wall plate member. The material damping container body is preferable because the same container body can be stacked in a plurality by mechanical strength.

It is preferable to select a hollow structural plate for the outer wall plate and the inner wall plate because the hollow structural plate has mechanical strength. It should be noted that when a plurality of metal rods or metal plates or metal foils are inserted into a plurality of spaces which are regions between the ribs and the front and back plates of the hollow structure-shaped plate, the weight of the plate increases but the radiation shielding effect also increases. preferable.

<Sixteenth Embodiment>
Fitting to one end of the above-mentioned cross-sectional shape or one end of the above-mentioned cross-sectional shape of a bellows structure plate whose cross-sectional shape is a mountain fold or valley fold, a folded plate, or an outer wall plate having an uneven fold Welding, bonding, heat welding, screws, bolts, or nuts of any one of a flat plate (band), chevron plate (angle), unequal angle chevron, channel (channel), and hat It is provided by the fixing method of
On the upper surface of the end portion of the bottom wall plate, a chevron plate with a bending plate angle of right angle or less for fitting the fitting member, an unequal angle chevron with a bending plate angle of right angle or less, a channel, a hat. 16. The radiation shielding/reducing base material according to claim 12, wherein any one of them is provided by a method of fixing any one of welding, adhesion, heat welding, rivets, screws, bolts, and nuts. The radioactive substance attenuation container body is preferable because it is a lightweight body and the same container body can be stacked in a plurality by mechanical strength.

In order to stack a plurality of container bodies, a bottom wall end portion of the container body is stacked on a container body fixed or fitted with a protrusion member at a right angle portion of a lid upper surface formed in the container body. A through-hole is opened near the end of the square tube (aggregate) fixed by welding at the same position (the same position as the above-mentioned protruding member position), and the protruding member of the container body lid located below the through-hole. Since the two upper and lower containers can be stably placed at that position by inserting, the container body of this configuration is preferable for long-term storage.

<17th Embodiment>
The outer wall plate is provided on an upper surface of an end portion of the bottom wall plate, and a through hole is provided in an upper end surface of the outer wall plate for providing a fixing tool for bolts and nuts for installing and fixing a lid body. Any of the flat plate (band), chevron plate (angle), unequal angle chevron, channel (channel), and hat that are welded, glued, heat welded, rivet, screw, bolt, nut It is provided with a fixed method,
The rock wool molded product according to any one of claims 12 to 16, wherein a through hole for mounting a plurality of bolt and nut fixtures is formed at an end portion of the lid body provided on the upper surface of the outer wall plate. In addition, the same container body can be stacked in a plurality by mechanical strength, which is preferable.
Further, when a steel plate is selected as the material of the present invention, it is recommended that the surface of the metal be hot dip galvanized to prevent corrosion of the metal.

<Eighteenth Embodiment>
The radiation-reduction-reducing fiber is either an inorganic fiber or an organic fiber, and the radiation-reduction-reducing fiber covers the surface of any one of claims 1 to 8. The shielding reduction base material and the radioactive substance attenuator include ceramic fibers made of inorganic substances, glass fibers, carbon fibers (carbon fibers), metal fibers (materials are iron alloy, nickel, chromium alloy, tungsten) as materials belonging to the fibers. Alloys, copper alloys, etc. belong to the inorganic fibers, of which fibers made of a tungsten alloy are preferable for radiation shielding.

Organic natural fibers made of organic substances include cotton, hemp, and silk, and synthetic fibers include aramid, polyamide, polyester, polyethylene, acrylic, rayon, and the like. In addition, by selecting one of the above-mentioned fiber materials or by coating, wrapping, or packing the surface of the rock wool molded body with the fiber laminated composite in which any one of the fiber materials is selected, the rock wool is It is preferable because the strength of the molded article is increased, which is preferable for transportation and movement, and it can be estimated that the radiation shielding effect is increased.
The rock wool molded product coated with this fiber material is preferable because it can be used for radiation protection clothing and radiation protection apron and is useful for occupational exposure protection and medical exposure protection.

In addition, the radioactive wool is impregnated into rockwool or fiber-coated rockwool moldings, or the rockwool or rockwool moldings (fiber coatings) are submerged in a pond in which radioactive material is deposited. It is preferable because rock wool moldings (fiber coatings) can be installed in the vicinity of the bottom of the drainage channel, gutter, manhole, and irrigation channel in which such soil exists and soil that adheres to, deposits on, and assimilates trees, leaves, and branches. ..

<19th Embodiment>
A mineral having a high electric resistance value and excellent electrical insulation property, or a material having a transmission reduction of radiation belonging to the mineral is dolomite or talc (talc), and among the mineral or dolomite or talc (talc) In the radiation shielding reduction base material and the radioactive substance attenuating body characterized by being powder or granules made of any one of them, quicklime and talc exhibit the effect of contributing to radiation shielding. The reason for this is that dolomite and talc (talc) have a high electric resistance value and an excellent electric insulating property, as described above in the rock wool molded product, and are therefore preferable for reducing the shielding of nuclide radiation.

<Twentieth Embodiment>
Water is attached to the surface of any of calcined or semi-calcined, lightly calcined dolomite, or talc (talc), which is a powder having a particle diameter of 5 mm to 0.1 mm or 50 μm to 1 μm. The radiation shielding reduction base material and the radioactive material attenuator, which are characterized by the fact that magnesium oxide, which is a component of dolomite fired at high temperature, has excellent moisture resistance and electrical insulation properties. It was presumed that the effect of reducing the shielding of the rays was exhibited, and therefore it is preferable for reducing the shielding of the nuclide radiation.

<Other Embodiment 1>
In order to reduce the exposure of workers from nuclide radiation, one of radioactive contamination water containing tritium, which is tritium, radioactive material, radioactive waste, water containing radioactive material, and sludge containing radioactive material is selected. The packaging purpose, the automatic filling and packaging electrical equipment for the packing purpose, the remote manual filling and packaging machinery equipment, the manual filling and packaging machinery equipment. The body packaging material is filled, and after the filling, the filling inlet is attached with a lid, or the filling inlet is hermetically closed by thermocompression bonding, the radiation of the present invention before or after the mechanical work. A method for transporting, storing, and storing radioactive waste that emits nuclide radiation by selecting and using any of a shielding reduction base material, a radioactive substance attenuator, a container, a bag, and a container.

<Other Embodiment 2>
A folded structure plate is provided between the back plate and the front plate, and the back plate member, the front plate member, and the inner structure space of the folded plate member are arranged in the inner space of the plate. A radiation shielding/reducing plate structure base material characterized by comprising any of the following:
The radiation shielding reduction plate structure base material includes a container, a container and a lid for storing radioactive substances, environmental radioactive pollutants and radioactive wastes, roofs, walls, doors, floors or radioactive wastes of building structures. It is intended to be used for the side wall, bottom wall and lid of containers, and also for the purpose of standing up as a wall in and near the land where radioactive waste is stored. The other plate-shaped structure according to the second embodiment is shown in the sectional view of FIG.
<A transparent perspective view is included in the drawings according to the embodiments of the present invention>

Rock wool granular cotton 10
Rock wool compressed granular cotton 11
Rockwool hydrous compression molded product 12
Dolomite 13
Microcrystalline carbon with water attached to the surface 14
Adhering water 15
Talc 16
Synthetic resin tube body (filled with rock wool) 17
Sealed thermocompression bonding wire 18
Waterproof hose shape body 19
Insulok 20
Opening 21
Thin stainless steel drum 22
Lid 23
Belt 24
Bolts and nuts 25
Box (folding) 26
Surface layer carbon fiber resin multi-layer material 27
Inner surface resin 28
Radioactive waste 29
Assembly unpacking method container 30
Bottom wall 31
Hollow structure plate 32
Bellows structure metal side wall plate 33
Radioactive waste storage container 34
Degassing bubble 35
Bottom wall waist 36
Lid fixing bolt insertion through hole 37
Strut Mating Angle 38
Side wall fitting part 39
Back thin plate 40
Front thin plate 41
Air passage 42
All screw rod 43
Nut 44
Yamagata stick 45
Sanya mountain shaped steel plate 46
Screw 47
Metal container 48
Lid fixing bolt (with lifting tool mounting hole) 49
Radioactive material storage area 50
Mating part 51
Rib 52
Cylindrical pipe 53
Pedestal 54
Base reinforcement plate 56
All screw rod locking nut 57
Square tube 58
Triangle plate 59
Dotted line box 60 to show internal structure
Flat plate (top surface) 61
Waterproof bag 62
Resin box 63
Stone container 64

Claims (20)

A radiation shielding material and a radioactive material attenuator, characterized in that the material having a reduction in the transmission of radiation is rock wool. The radiation shielding reduction base material and the radioactive material attenuator according to claim 1, wherein the rock wool material has a density of 10 kg/m 3 or more. The chemical composition (% by weight) is as follows: SiO2 content 35 to 45%, Al2O3 content 10 to 20%, Fe2O3 content 0 to 3%, MgO content 4 to 8%, CaO content 30. 40, MnO is a rockwool containing 0 to 1% of MnO, and the radiation shielding material and the radioactive substance attenuator according to claim 1 or 2, characterized in that. A mineral fiber containing rock wool or granular cotton of rock wool is compressed to a high density and molded into a weight value of any of 10 kg/m3 to 4000 kg/m3. Item 3. A radiation shielding reduction base material and a radioactive substance attenuator according to items 1 to 3. 5. The radiation shielding material according to claim 1, which is formed by compressing or squeezing so that the water content of mineral fibers or the water content of rock wool remains. And radioactive material attenuator. A mixture of a rock wool granular molded product and a radioactive substance or a contaminant contaminated with a radioactive substance, or a microcrystalline carbon, dolomite, quicklime, talc, or boron of a granular or powdered form in the mixture. Compressed by applying pressure to a mixed constituent base material obtained by mixing any of the above, or by forming a plurality of layers of the constituent base material in the vertical direction, lateral direction, or all directions to laminate compression and molding. A substrate for reducing radiation shielding and a radioactive substance attenuator, which are characterized by: Radiation-shielding-reducing base material and radioactive substance characterized in that water is attached to the surface of powdery microcrystalline carbon having a particle diameter of 2 mm to 0.1 mm or 50 μm to 1 μm. Attenuator. The radiation shielding/reducing base material and the radioactive substance attenuating body according to claim 1, wherein the substrate is formed by being hydrated so that water or water containing a radioactive substance remains. Any one of claims 1 to 8 or a plurality of kinds of claims 1 to 8 are provided inside the container in which a hermetically-sealed lid is configured so that the filling material inside the container does not leak to the outside of the container. A radiation shielding reduction base material and a radioactive material characterized by filling a mixed constituent base material obtained by mixing and inserting and mixing radioactive waste into the mixed constituent filling base material or injecting water containing a radioactive material. Attenuator container. 10. The bag according to claim 1, wherein a sealing lid is configured to prevent the filling material inside the bag from leaking out of the bag, or inside the bag formed by thermocompressing the opening end of the bag filling opening. Alternatively, a mixed constituent base material obtained by mixing any one of claims 1 to 8 is filled and a radioactive substance is inserted and mixed into the mixed constituent filled base material, or water containing a radioactive substance is injected. A radiation shielding reduction base material and a radioactive substance attenuation body bag body, which are characterized by The container, the bag body, and the lid body have a function of communicating the inner space and the outside of the container and the bag body, or a part of the lid attached to the container and the bag body have a function of communicating the inner space and the outer body. 18. At least one of a water injection port, an air vent port, and a gas vent port is provided in any one of the material parts of the above. Radiation shielding reduction base material and radioactive substance attenuator container or bag. An outer wall plate body made of at least one body is erected at an upper end portion of a bottom wall plate body made of at least one body, and the same or the same other upper and lower axial end portions of the outer wall plate body are provided. A container container shape or a box shape formed by fitting with an outer side wall plate to enable connection with the other outer side wall plate is formed. From the inner wall plate body and the outer wall plate body disposed on the center side of the bottom wall plate so as to retreat to the center side of the bottom wall plate from the inside of the container or 10. A package, a packed radioactive material or a contaminated material contaminated with radioactive material, a gap area between an upper surface and a lower lid of a storage object, and a lower area of a lower surface of the storage material and a gap area between an upper surface of the bottom wall plate. 10. A plurality of radiation shielding/reducing base materials and radioactive substance attenuating body containers according to 10 or 11 are provided, or a plurality of radiation shielding/reducing base materials and radioactive substance attenuating body bags are provided. A container for storing objects and radioactive substances. A container shape in which a fitting portion for connecting the plurality of outer wall plates to the bottom wall plate is formed by fitting the lower end portions of the plurality of outer wall plate bodies to the bottom wall upper surface end portion. Alternatively, the container-shaped or box-shaped outer wall plate, the bottom wall, and the inner wall plate can be separated from each other to form an assembly or unpacking method. The radiation shielding reduction base material and the radioactive material attenuation container body according to claim 12, which are characterized in that The outer wall plate is a metal plate, a resin plate, a plate body obtained by processing a carbon fiber and a resin in combination, a hollow structural shape plate body, or a metal plate, a resin plate, a carbon fiber and a resin being processed in combination. 14. A bellows structure plate body that is a mountain fold, a valley fold, or a fold plate shape or a structure plate body that is unevenly folded, in which any of the following plate bodies is equally divided into a plurality of times. Radiation shielding reduction base material and radioactive material attenuation container body. The outer side wall plate and the inner side wall plate are a corrugated structure plate body that is a mountain fold, a valley fold, or a fold plate-shaped body, a hollow structure-shaped plate body, and a metal plate that is unevenly folded, in which the resin plate is equally divided into a plurality of times. A plate, a resin plate, a plate formed by combining and processing a metal and a resin, a glass plate, or a plate formed by combining and processing a carbon fiber and a resin, and an inner surface region of the plate or claim Item 13. The radiation shielding/reducing base material and radioactivity according to any one of items 11 to 13, wherein any one of a heat insulating material, a hollow structure plate, and a plate-like member is provided on the inner surface of the outer wall plate member. Material damping container body. Fitting to one end of the above-mentioned cross-sectional shape or one end of the above-mentioned cross-sectional shape of a bellows structure plate whose cross-sectional shape is a mountain fold or valley fold, a folded plate, or an outer wall plate having an uneven fold Welding, bonding, heat welding, screws, bolts, or nuts of any one of a flat plate (band), chevron plate (angle), unequal angle chevron, channel (channel), and hat It is provided by the fixing method of
On the upper surface of the end portion of the bottom wall plate, a chevron plate with a bending plate angle of right angle or less for fitting the fitting member, an unequal angle chevron with a bending plate angle of right angle or less, a channel, a hat. 16. The radiation shielding/reducing base material according to claim 12, wherein any one of them is provided by a method of fixing any one of welding, adhesion, heat welding, rivets, screws, bolts, and nuts. Radioactive material attenuation container body. The outer wall plate is provided on an upper surface of an end portion of the bottom wall plate, and a through hole is provided in an upper end surface of the outer wall plate for providing a fixing tool for bolts and nuts for installing and fixing a lid body. Any of the flat plate (belt), chevron plate (angle), unequal angle chevron, channel (channel), and hat that are welded, glued, heat welded, rivet, screw, bolt, nut And a through hole for mounting a plurality of bolt and nut fixtures is formed at the end of the lid body installed on the upper surface of the outer wall plate. A radiation shielding reduction base material and a radioactive material attenuation container body according to claim 12. The radiation-reduction-reducing fiber is either an inorganic fiber or an organic fiber, and the radiation-reduction-reducing fiber covers the surface of any one of claims 1 to 8. Shielding reducing base material and radioactive material attenuator. A mineral having a high electric resistance value and excellent electrical insulation property, or a material having a transmission reduction of radiation belonging to the mineral is dolomite or talc (talc), and among the mineral or dolomite or talc (talc) A radiation shielding reduction base material and a radioactive substance attenuator, which are powders or granules made of any of the above. Water is attached to the surface of either calcined or semi-calcined dolomite or talc, which is a powder with a particle size of 5 mm to 0.1 mm or 50 μm to 1 μm. A radiation shielding material and a radioactive material attenuator.