JP5882045B2 - Radiation shielding bag - Google Patents

Description

  The present invention relates to a radiation shielding bag capable of storing and transporting and storing a contaminant contaminated with a radioactive substance.

  As radiation shielding containers for transporting and storing pollutants contaminated with radioactive substances, those described in Patent Document 1 and Patent Document 2 below are known.

  In the radiation shielding container described in Patent Document 1, a plurality of storage containers having different sizes and made of steel plate members are stored in a body that is a steel open drum can.

  The radiation shielding container described in Patent Document 2 has a cylinder formed of stainless steel stacked in a standard drum container and stored in multiple layers, and lead, tungsten, or concrete is placed in the gap between the cylinders. A radiation shield such as is arranged.

JP 2007-51908 A JP 2010-8224 A

  The radiation shielding containers described in Patent Document 1 and Patent Document 2 are manufactured mainly for the purpose of storing radioactive waste that emits radiation having a relatively high concentration generated in a nuclear power plant.

  Currently, so-called decontamination work is going to be performed in a place contaminated with radiation. Soil, weeds, dead leaves, etc. shaved from the surface of the land by this decontamination work are radioactive pollutants that emit low concentrations of radiation, and shield the radiation emitted from these radioactive pollutants during their transportation and storage. is necessary.

  Since the radiation shielding containers described in Patent Document 1 and Patent Document 2 are large and heavy, it is not easy to bring these radiation shielding containers into the soil decontamination work site. On the other hand, it is not preferable to transport or pile up soil, weeds, dead leaves, etc. cut from the surface of the land without taking any shielding measures.

  The present invention solves the above-described conventional problems, and radioactive contaminants that generate a relatively low concentration of radiation, such as soil, can be transported relatively easily by taking a radiation shielding measure. The object is to provide a radiation shielding bag suitable for temporary storage of pollutants.

The present invention provides a bag body having a storage space surrounded by a side wall and a bottom and an opening facing upward, a belt attached to the bag body to suspend the bag body, and the opening of the bag body. A lid member that opens and closes a part, and the lid member has a ceiling part and a peripheral wall part, and the peripheral wall part is installed outside the side wall part of the bag body, and the opening part is formed in the ceiling part. Is to be blocked,
The side wall portion and the bottom portion of the bag main body, and the ceiling portion and the peripheral wall portion of the lid member are a shielding layer that is an aggregate of a large number of lead hairs, and a flexible sheet that covers both front and back surfaces of the shielding layer And consists of
A flexible fastening sheet is attached to the outer surface of the side wall, and the outer surface of the peripheral wall of the lid member and the fastening sheet can be joined via a hook-and-loop fastener,
The fastening sheet is attached over the entire peripheral length of the outer surface of the side wall portion, and a plurality of cut portions cut into the fastening sheet from the upper edge portion at intervals in the circumferential direction, and the cut portion A plurality of fastening pieces sandwiched between the plurality of fastening pieces are formed, and each fastening piece can be joined to the outer surface of the peripheral wall portion via the hook-and-loop fastener .

  In the radiation shielding bag of the present invention, since the bag body and the lid are composed of lead hair and a flexible sheet, the radiation shielding bag can be configured to be lighter than conventional metal radiation shielding containers, and the size is also required. It can be changed freely. Since the whole is lightweight, it can be easily transported by the power of a human hand or machine while the bag body is suspended by a belt.

  In addition, since the lid that closes the opening of the bag body has lead hair, it is easy to suppress leakage of radiation from the opening of the bag body. In particular, the lid has a ceiling part and a peripheral wall part, both of which contain lead hairs, and the peripheral wall part has a structure that overlaps the outside of the side wall part of the bag body. Multiple shielding is possible with the peripheral wall, and the radiation shielding effect at the opening can be set to a very high level.

  In the present invention, the shielding layer is formed to have a predetermined thickness by joining a large number of lead hairs with a synthetic resin material, and the side wall portion, the bottom portion, and the lid member are deformable.

  The radiation shielding bag of the present invention can be easily handled and transported because the bag main body and the entire lid member can be deformed, and the operation of packing contaminants in the storage space is also easy.

  The radiation shielding bag of the present invention can have a double shielding structure of the side wall portion and the peripheral wall portion around the opening of the bag main body, but the fastening sheet provided on the bag main body and the outer surface of the peripheral wall portion of the lid member. By fixing with a hook-and-loop fastener, it is possible to stabilize the lid that closes the opening in a closed state.

  The radiation shielding bag of the present invention can be configured to be lighter than a conventional metal shielding container, and can be easily transported by human power or mechanical power using a belt. In addition, since almost the entire region of the bag body and the lid is composed of lead hair and a flexible sheet, the entire bag is soft and easy to handle.

An exploded perspective view showing an embodiment of a radiation shielding bag of the present invention, FIG. 1 is a front view of the radiation shielding bag shown in FIG. FIG. 2 is a bottom view of the radiation shielding bag shown in FIG. The partial front view which shows the upper end part and lid member of a bag body, The fragmentary sectional view which shows the junction part of the bottom part and side wall part of a bag main body, The fragmentary sectional view which shows the fitting state of the upper end part of a bag main body, and a cover member, The front view which shows 2nd Embodiment of the radiation shielding bag of this invention,

  The radiation shielding bag 1 shown in FIG. 1 has a belt 2 for suspending the bag body 10, the lid member 20, and the bag body.

  The bag body 10 has a bottom portion 11 that appears in the bottom view of FIG. 3 and a side wall portion 12 that rises from the periphery of the bottom portion 11. As shown in FIG. 1, the bag body 10 has a storage space 13 surrounded by a bottom portion 11 and a side wall portion 12, and a portion surrounded by an upper edge portion 12 a of the side wall portion 12 defines the storage space 13. The opening 14 opens upward.

  The bag body 10 has a bottom portion 11 that is circular and a side wall portion 12 that is cylindrical. Therefore, the storage space 13 is a cylindrical space, and the opening 14 is also circular.

  The lid member 20 has a ceiling part 21 and a peripheral wall part 22 continuous below the ceiling part 21. The ceiling part 21 is circular, and the peripheral wall part 22 is a short cylindrical shape.

  As shown in FIGS. 2 and 6, when the lid member 20 is installed at the upper end portion of the bag body 10, the peripheral wall portion 22 of the lid member 20 overlaps the outside of the upper portion 12 b of the side wall portion 12 of the bag body 10. The opening 14 of the bag body 10 is closed by the ceiling 21 of the lid member 20.

  In the radiation shielding bag 1 of the embodiment shown in each drawing, the bottom 11 and the ceiling 21 are circular, and the side wall 12 and the peripheral wall 22 are cylindrical, but these shapes are limited to a circle or a cylinder. For example, the bottom 11 and the ceiling 21 may be a quadrilateral or other polygon, and the side wall 12 and the peripheral wall 22 may be a square tube or a polygonal tube.

  In FIG. 5, a part of the bottom part 11 and a part of the lower part of the side wall part 12 constituting the bag body 10 are shown in a sectional view, and FIG. A part of the ceiling part 21 and the peripheral wall part 22 are shown in a sectional view.

  As shown in FIGS. 5 and 6, the bottom part 11 and the side wall part 12 constituting the bag body 10, and the ceiling part 21 and the peripheral wall part 22 constituting the lid member 20 are all outer surfaces covering the shielding layer and the outer surface of the shielding layer. It is comprised with the laminated body of the sheet | seat and the inner surface sheet which covers the inner surface of a shielding layer.

  As shown in FIGS. 5 and 6, the laminate of the bottom 11 of the bag body 10 includes a shielding layer 31 a and an outer sheet 32 a and an inner sheet 33 a, and the laminate of the side wall 12 includes the shielding layer 31 b and the outer sheet. 32b and an inner sheet 33b. The ceiling portion 21 of the lid member 20 includes a shielding layer 31c, an outer surface sheet 32c, and an inner surface sheet 33c, and the peripheral wall portion 22 includes a shielding layer 31d, an outer surface sheet 32d, and an inner surface sheet 33d.

  The shielding layers 31a, 31b, 31c, and 31d are configured to have substantially the same density and substantially the same specific gravity with substantially the same thickness with the same material configuration. The shielding layer is, for example, a mixture of lead hair (lead fiber) having a thickness of 0.2 to 0.8 mm and glass fiber having substantially the same thickness, and the lead hair and glass fiber are polyvinyl chloride ( PVC) and other synthetic resin binders. The thickness of the shielding layers 31a, 31b, 31c and 31d is about 2 to 10 mm and can be converted relatively easily by an external force.

  The outer sheets 32a, 32b, 32c, and 32d and the inner sheets 33a, 33b, 33c, and 33d are formed of the same material. Synthetic resin sheets, composite materials of synthetic resin fibers such as nylon fibers and synthetic resin sheets, metal A reinforcing sheet (split cloth) such as a net or a resin net is made of a flexible sheet such as a laminate in which the resin sheet is laminated.

  As shown in FIG. 5, the edge 32 a 1 of the outer sheet 32 a and the edge 33 a 1 of the inner sheet 33 a extend to the peripheral edge of the bottom 11. At the lower edge portion 12c of the side wall portion 12, the edge portion 32b1 of the outer surface sheet 32b and the edge portion 33b1 of the inner surface sheet 33b extend downward. Edges 32 a 1, 33 a 1 located around the bottom 11 and edges 32 b 1, 33 b 1 extending from the lower edge 12 c of the side wall 12 are stitched together, glued or heat sealed, or these means It is firmly joined by the combination of Thereby, the side part 11 and the side wall part 12 of the bag main body 10 are couple | bonded so that a clearance gap may not arise.

  As shown in FIG. 6, at the upper edge portion 12a of the side wall portion 12, the outer sheet 32b and the inner sheet 33b are continuous or seamlessly joined.

  In the lid member 20, the outer sheet 32 c edge 32 c 1 and the edge 33 c 1 of the inner sheet 33 c extend to the peripheral edge of the ceiling 21. An edge portion 32d1 of the outer surface sheet 32d and an edge portion 33d1 of the inner surface sheet 33d extend to the upper end portion 22a of the peripheral wall portion 22 of the lid member 20. At the peripheral edge of the ceiling portion 21, the edge portion 32c1 and the edge portion 33c1, and the edge portion 32d1 and the edge portion 33d1 are stitched together, adhered with an adhesive, heat-sealed, or firmly joined by a combination of these means. ing. Thereby, the ceiling part 21 and the peripheral wall part 22 of the cover member 20 are combined so that no gap is generated.

  As shown in FIG. 6, at the lower end portion 22b of the peripheral wall portion 22 of the lid member 20, the outer sheet 32d and the inner sheet 33d are continuous or seamlessly joined.

  The belt 2 is formed by knitting synthetic resin fibers such as nylon fibers, and is thick and strong, and can be flexibly deformed. As shown in FIG. 3, the belt 2 is provided with two bands, intersects at the outer surface of the bottom portion 11 of the bag body 10, and is fixed to the bottom portion 11 at four locations by fastening sheets 3 a formed of a vinyl sheet or the like. . As shown in FIGS. 1 and 2, the belt 2 is also fixed to the side wall portion 12 by a fastening sheet 3 b formed of a vinyl sheet or the like on the outer surface of the bag body 10. The loop portion of the belt 2 of the belt 2 extends above the opening 14 of the bag body 10.

  As described in FIGS. 1 and 2, the handle 4 is attached to the upper surface of the ceiling portion 21 of the lid member 20. The handle 4 is made of the same material as the belt 2.

  As shown in FIGS. 1, 2, and 4, a fastening sheet 40 is attached to the upper portion of the side wall portion 12 of the bag body 10. The fastening sheet 40 is a synthetic resin sheet, a composite material of a synthetic resin fiber such as nylon fiber and a synthetic resin sheet, a laminate in which a reinforcing material (split cloth) such as a metal net or a resin net is sandwiched between resin sheets, and the like. It is composed of a flexible sheet. The lower belt portion 41 of the fastening sheet 40 extends over the entire periphery of the side wall portion 12, and the lower belt portion 41 is fixed to the outer surface of the side wall portion 12 by a fixing means such as stitching, adhesion, or heat sealing. ing. The upper belt portion of the fastening sheet 40 is not joined to the side wall portion 12, and a plurality of cut portions 42 are formed by cutting downward from the upper edge portion at regular intervals along the circumferential direction. A portion sandwiched between the portions 42 is a plurality of fastening pieces 43.

  As shown in FIGS. 4 and 6, one face sheet 44 a constituting the surface fastener 44 is fixed to the inner surface of the fastening piece 43, and the surface fastener 44 is attached to the outer surface of the peripheral wall portion 22 of the lid member 20. The other face sheet 44b is fixed. One of the face sheets 44a and 44b has a number of synthetic resin loops on its surface, and the other has a number of synthetic resin hooks on its surface.

Next, the usage method of the said radiation shielding bag 1 is demonstrated.
As shown in FIG. 1, soil, vegetation, dead leaves, earth and sand, etc. generated by the decontamination work are stored in the storage space 13 of the bag body 10 with the lid member 20 removed. Prior to mounting the lid member 20, as shown in FIGS. 1 and 4, the plurality of fastening pieces 43 provided on the bag body 10 are folded back downward. As shown in FIGS. 2 and 6, the lid member 20 is installed so that the peripheral wall portion 22 overlaps the outside of the upper portion 12 b of the side wall portion 12 of the bag body 10, and the opening portion 14 is blocked by the ceiling portion 21.

  After the lid member 20 is installed, as shown in FIGS. 2 and 6, a plurality of fastening pieces 43 cover the outer surface of the peripheral wall portion 22 of the lid member 20, and each fastening piece 43 is surrounded by the surface fastener 44. It fixes to the outer surface of the part 22.

  The radiation shielding bag 1 is provided with shielding layers 31a, 31b, 31c, 31d containing lead hairs on the entire bag body 10 and the lid member 20, and the storage area is covered with the shielding layer. When soil contaminated with a substance is stored, radiation is less likely to leak out of the radiation shielding bag 1.

  When the lid member 20 is attached to the bag body 10, as shown in FIG. 6, the opening 14 is closed by the ceiling 21 having the shielding layer 31 c, and the bag body 10 is surrounded around the opening 14. The side wall portion 12 and the peripheral wall portion 22 of the lid member 20 are overlapped to form a double structure of the shielding layer 31b and the shielding layer 31d. For this reason, leakage of radiation from the opening 14 and its periphery to the outside can be reliably suppressed.

  In addition, since the peripheral wall portion 22 of the lid member 20 is overlapped and fitted on the entire outer periphery of the side wall portion 12 of the bag body 10, the lid member 20 is difficult to come off. In particular, since the fastening piece 43 is fastened to the entire circumference of the peripheral wall portion 22, the lid member 20 is further less likely to come off.

  Since the bag body 10 and the lid member 20 are entirely composed of a shielding layer, an outer sheet, and an inner sheet and can be deformed, it becomes easy to pack various contaminants into the storage space 13. Further, when a person is transported while holding the belt, the portion that hits the body is soft, so there is less fatigue on the human body during transportation work.

  In the above-described embodiment, after the lid member 20 is mounted, each fastening piece 43 is deformed upward and mounted on the outer surface of the peripheral wall portion 22 of the lid member 20 with the hook-and-loop fastener 44. Fixing of the lid member 20 after mounting is very easy.

  However, in this invention, as shown in 2nd Embodiment of FIG. 7, the belt piece 51 is fixed to several places of the outer surface of the side wall part 12 of the bag main body 10, and the female buckle 52 is attached to the front part. Alternatively, the belt piece 53 may be fixed to a plurality of locations on the outer surface of the peripheral wall portion 22 of the lid member 20, and the male buckle 54 may be fixed to the tip portion thereof. In this structure, after attaching the lid member 20 to the bag body 10, the male buckle 54 and the female buckle 52 are fitted in at least two places, thereby making it easy to prevent the lid member 20 from being detached.

  Note that the peripheral wall portion 22 and the side wall portion 12 may be fixed with a tape after the lid member 20 is mounted on the bag body 10. Alternatively, the lid member 20 may be fixed to the bag body 10 by tying a string incorporated in the peripheral wall portion 22 of the lid member 20.

DESCRIPTION OF SYMBOLS 1 Radiation shielding bag 2 Belt 10 Bag main body 11 Bottom part 12 Side wall part 13 Storage space 14 Opening part 20 Lid member 21 Ceiling part 22 Peripheral wall part 31a, 31b, 31c, 31d Shielding layer 32a, 32b, 32c, 32d Outer surface sheet 33a, 33b , 33c, 33d Inner surface sheet 40 Fastening sheet 42 Notch 43 Fastening piece 44 Hook

Claims (2)

A bag body having a storage space surrounded by a side wall portion and a bottom portion and an opening facing upward, a belt attached to the bag body to suspend the bag body, and opening and closing the opening of the bag body A lid member, and the lid member has a ceiling part and a peripheral wall part, and the peripheral wall part is installed outside the side wall part of the bag body, and the opening part is closed by the ceiling part. Is,
The side wall portion and the bottom portion of the bag main body, and the ceiling portion and the peripheral wall portion of the lid member are a shielding layer that is an aggregate of a large number of lead hairs, and a flexible sheet that covers both front and back surfaces of the shielding layer And consists of
A flexible fastening sheet is attached to the outer surface of the side wall, and the outer surface of the peripheral wall of the lid member and the fastening sheet can be joined via a hook-and-loop fastener,
The fastening sheet is attached over the entire peripheral length of the outer surface of the side wall portion, and a plurality of cut portions cut into the fastening sheet from the upper edge portion at intervals in the circumferential direction, and the cut portion A radiation shielding bag characterized in that a plurality of fastening pieces sandwiched between two are formed, and each fastening piece can be joined to the outer surface of the peripheral wall portion via the hook-and-loop fastener . 2. The radiation shielding according to claim 1 , wherein the shielding layer is formed by bonding a plurality of lead hairs with a synthetic resin material to a predetermined thickness, and the side wall portion, the bottom portion, and the lid member are deformable. bag.

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