Apparatus and method for treating radioactive waste

Abstract

To provide a radioactive waste treatment apparatus and method, which reduce treatment costs by reducing the amount of an excess solidification agent.SOLUTION: A radioactive waste treatment apparatus is provided, comprising a container conveyor line for conveying a disposal container containing radioactive waste, a carry-in unit for carrying in the disposal container to the container conveyor line, a carry-out unit for carrying out the disposal container from the container conveyor line, a solidifying agent filling device for filling the disposal container on the container conveyor line with a solidifying agent, and a container standby line connected to the container conveyor line to convey the disposal container present on the container conveyor line for temporary standby.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to an apparatus and method for treating radioactive waste.

Background Art

[0002] At a nuclear facility, for example, waste such as metal generated during replacement work of various equipment or during reactor decommissioning is disassembled, stored in a container, and stored. In this case, radioactive waste is stored in a container such as a drum can, and solidified by filling it with a solidifying agent such as mortar to form a solidified body. The solidified radioactive waste is stored in a radioactive waste storage facility. Examples of such an apparatus for treating radioactive waste include those described in the following cited reference 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Radioactive waste is placed in a container and filled with mortar to be solidified. When treating radioactive waste, a predetermined amount of mortar required for filling a plurality of containers in advance is prepared. However, since the size, shape, number, etc. of the radioactive waste contained in the container are not constant, the injection amount of mortar filled into one container varies. Then, it may not be possible to use up all the prepared mortar, and surplus mortar is generated. Mortar is manufactured by kneading cement, water, and sand. Since the hardening reaction starts after kneading, it is difficult to store it for a long time. Therefore, due to the need to ensure the soundness of radioactive waste treatment and the quality of the manufactured waste body, surplus mortar is disposed of. Therefore, there is a problem that unnecessary treatment costs are incurred.

[0005] The present disclosure solves the above-described problems, and an object thereof is to provide an apparatus and a method for treating radioactive waste that reduce the treatment cost by reducing excess hardener.

Means for Solving the Problems

[0006] The radioactive waste treatment apparatus of the present disclosure for achieving the above object includes a container conveyance line for conveying a disposal container storing radioactive waste, a loading unit for loading the disposal container into the container conveyance line, an unloading unit for unloading the disposal container from the container conveyance line, a hardener filling device for filling the disposal container on the container conveyance line with a hardener, and a container standby line connected to the container conveyance line for conveying and temporarily waiting the disposal container on the container conveyance line.

[0007] The radioactive waste treatment method of the present disclosure further includes a step of loading a disposal container storing radioactive waste from a loading unit into a container conveyance line, a step of filling the disposal container conveyed on the container conveyance line with a hardener, a step of unloading the disposal container filled with a preset predetermined amount of hardener from an unloading unit, a step of conveying the disposal container filled with less than the predetermined amount of hardener to a container standby line, and a step of conveying the disposal container on the container standby line to the loading unit side on the container conveyance line.

Effects of the Invention

[0008] According to the radioactive waste treatment apparatus and method of the present disclosure, it is possible to reduce the treatment cost by reducing excess hardener.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] Hereinafter, with reference to the drawings, preferred embodiments of the present disclosure will be described in detail. It should be noted that the present disclosure is not limited by this embodiment, and when there are a plurality of embodiments, those configured by combining each embodiment are also included. In addition, the constituent elements in the embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range.

[0011] [First Embodiment] <Radioactive Waste Treatment Apparatus> FIG. 1 is a front view showing the radioactive waste treatment apparatus of the first embodiment, and FIG. 2 is a plan view showing the radioactive waste treatment apparatus.

[0012] The radioactive waste treatment apparatus is for storing and treating mainly metallic waste generated in a nuclear facility as radioactive waste in a disposal container. The radioactive waste is stored in the disposal container and solidified by filling a solidifying agent such as mortar to form a solidified body. The solidified radioactive waste is stored in a radioactive waste storage facility.

[0013] As shown in FIGS. 1 and 2, the radioactive waste treatment apparatus 10 includes a container conveyance line 11, a loading section 12, an unloading section 13, a solidifying agent filling device 14, and a container standby line 15.

[0014] The container transfer line 11 is capable of transferring the disposal container 101 containing the radioactive waste 100. The container transfer line 11 is linear in a plan view. The container transfer line 11 is configured by arranging a plurality (in this embodiment, four, but the number is not limited) of transfer conveyors 21, 22, 23, 24 in series. The transfer conveyors 21, 22, 23, 24 are roller conveyors and can be driven independently by a driving device (not shown). Therefore, by driving the transfer conveyors 21, 22, 23, 24, the disposal container 101 can be transferred from the transfer conveyor 21 to the transfer conveyor 24.

[0015] The loading section 12 is provided at the upstream end in the transfer direction on the container transfer line 11. In this embodiment, the transfer conveyor 21 that constitutes the container transfer line 11 also serves as the loading section 12. However, the loading section 12 may be provided separately from the transfer conveyor 21. The disposal container 101 is loaded onto the transfer conveyor 21 as the loading section 12 by a transfer device (not shown) and then loaded onto the container transfer line 11.

[0016] The unloading section 13 is provided at the downstream end in the transfer direction on the container transfer line 11. In this embodiment, the transfer conveyor 24 that constitutes the container transfer line 11 also serves as the unloading section 13. However, the unloading section 13 may be provided separately from the transfer conveyor 24. The disposal container 101 is transferred to the transfer conveyor 24 as the unloading section 13 by the container transfer line 11 and then unloaded from the container transfer line 11 to the outside.

[0017] The curing agent filling device 14 injects and fills the disposal container 101 stopped on the container conveyance line 11 with mortar (curing agent). The mortar is manufactured by kneading cement, water, and sand. Note that the curing agent is not limited to mortar, and for example, it may be concrete or other materials. The curing agent filling device 14 includes an injection device 31, a supply hose 32, and a curing agent tank 33. The injection device 31 is movable along the horizontal and vertical directions by a moving mechanism 34 provided in a building (not shown), for example. The curing agent tank 33 is installed at a predetermined position inside the building and stores a predetermined amount of mortar. The supply hose 32 connects the injection device 31 and the curing agent tank 33. Note that as materials for the curing agent, for example, sand, plastic, asphalt, cement, geopolymers, etc. are applicable.

[0018] The disposal container 101 containing the radioactive waste 100 is carried into the container conveyance line 11 from the loading section 12, then conveyed along the container conveyance line 11, and stopped at a position below the injection device 31. Here, the curing agent filling device 14 operates, and the mortar stored in the curing agent tank 33 is supplied to the injection device 31 via the supply hose 32. The injection device 31 injects the mortar into the disposal container 101 on the container conveyance line 11. When a predetermined amount of mortar is injected into the disposal container 101, the operation of the curing agent filling device 14 stops. The disposal container 101 is conveyed by the container conveyance line 11 and carried out to the outside from the unloading section 13 when it is filled with a predetermined amount of mortar.

[0019] The container standby line 15 is connected to the container transfer line 11 to transfer the disposal container 101 on the container transfer line 11 and temporarily wait. The container standby line 15 transfers the disposal container 101 on the downstream side in the transfer direction from the solidifying agent filling device 14 on the container transfer line 11 to the upstream side in the transfer direction from the solidifying agent filling device 14 on the container transfer line 11. That is, the container standby line 15 connects between the solidifying agent filling device 14 and the unloading section 13 on the container transfer line 11 and between the solidifying agent filling device 14 and the loading section 12 on the container transfer line 11. Also, the container standby line 15 can wait for a plurality of disposal containers 101 in which the radioactive waste 100 is stored and filled with mortar.

[0020] The container standby line 15 connects the conveyor 24 configured as the unloading section 13 on the container transfer line 11 and the conveyor 21 configured as the loading section 12 on the container transfer line 11.

[0021] The container standby line 15 is U-shaped in plan view. The container standby line 15 has one (or a plurality) of standby conveyors 41 and a moving device 42. The standby conveyor 41 is arranged in parallel with a space from the container transfer line 11. The standby conveyor 41 is a roller conveyor and can be driven by a driving device (not shown).

[0022] The moving device 42 moves the disposal container 101 between the container transfer line 11 and the standby conveyor 41. The moving device 42 has a first moving cart 43 and a second moving cart 44. The first moving cart 43 and the second moving cart 44 are, for example, traversers capable of reciprocating on the conveyors 24 and 21.

[0023] The first transfer cart 43 is arranged along a direction orthogonal to the container transfer line 11 and the standby conveyor 41. The first transfer cart 43 moves the disposal container 101 from the downstream side in the transfer direction in the container transfer line 11 to the upstream side in the transfer direction in the standby conveyor 41. That is, the first transfer cart 43 can reciprocate the transfer conveyor 24 between the position of the unloading section 13 and the position adjacent to the upstream end in the transfer direction in the standby conveyor 41. Therefore, when the disposal container 101 is mounted on the transfer conveyor 24 of the unloading section 13, the first transfer cart 43 can move the disposal container 101 mounted on the transfer conveyor 24 from the unloading section 13 to the standby conveyor 41. Also, after the disposal container 101 on the transfer conveyor 24 has moved to the standby conveyor 41, the first transfer cart 43 can move the empty transfer conveyor 24 to the unloading section 13.

[0024] The second transfer cart 44 is arranged along a direction orthogonal to the container transfer line 11 and the standby conveyor 41. The second transfer cart 44 moves the disposal container 101 from the downstream side in the transfer direction in the standby conveyor 41 to the upstream side in the transfer direction in the container transfer line 11. That is, the second transfer cart 44 can reciprocate the transfer conveyor 21 between the position adjacent to the downstream end in the transfer direction in the standby conveyor 41 and the position of the loading section 12. Therefore, when the disposal container 101 is mounted on the transfer conveyor 21 at a position adjacent to the downstream end of the standby conveyor 41, the second transfer cart 44 can move the disposal container 101 mounted on the transfer conveyor 21 from the standby conveyor 41 to the loading section 12. Also, after the disposal container 101 on the transfer conveyor 21 has moved to the loading section 12, the second transfer cart 44 can move the empty transfer conveyor 21 to a position adjacent to the standby conveyor 41.

[0025] <Control System of Radioactive Waste Treatment Device> Figure 3 is a plan view showing the control system of the radioactive waste treatment device.

[0026] As shown in FIG. 3, the control unit 51 can control the conveyor belts 21, 22, 23, 24 that make up the container conveyance line 11, and the standby conveyor 41 and the moving device 42 (the first moving cart 43 and the second moving cart 44) that make up the container standby line 15. Further, the control unit 51 can control the hardener filling device 14. Here, the control unit 51 is a control device, and the control device is a controller, which is realized, for example, by various programs stored in the storage unit being executed with the RAM as a work area by a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or the like.

[0027] The filling amount sensor 52 measures the filling amount of the mortar filled in the disposal container 101. The filling amount sensor 52 is, for example, a laser measuring instrument, but is not limited to this configuration. The filling amount sensor 52 is arranged, for example, in the vicinity of the injection device 31 in the hardener filling device 14, and measures the filling amount of the mortar in the disposal container 101 filled with mortar when the conveyor belt 21 stops. However, the filling amount sensor 52 is not limited to this arrangement position, and for example, one or more may be arranged above any of the conveyor belts 22, 23, 24. The filling amount sensor 52 is connected to the control unit 51 and outputs the measurement result to the control unit 51.

[0028] The control unit 51 performs switching control of the conveyance destination of the disposal container 101 between the carry-out unit 13 and the container standby line 15 based on the measurement result of the filling amount sensor 52. That is, in the container conveyance line 11, the disposal container 101 storing the radioactive waste 100 is filled with mortar by the hardener filling device 14. Here, the disposal container 101 filled with a predetermined amount of mortar necessary to cover and solidify the radioactive waste 100 is discharged to the outside from the carry-out unit 13. On the other hand, the disposal container 101 that could not cover the radioactive waste 100 and was not filled with a predetermined amount of mortar is conveyed to the container standby line 15.

[0029] The control unit 51 receives the filling amount of the mortar in the disposal container 101 from the filling amount sensor 52. When the disposal container 101 filled with a predetermined amount of mortar reaches the conveyor 24 which is the unloading unit 13, the control unit 51 drives the conveyor 24 to discharge the disposal container 101 from the unloading unit 13 to the outside. On the other hand, when the disposal container 101 that reaches the conveyor 24 which is the unloading unit 13 is not filled with a predetermined amount of mortar but is filled with less than the predetermined amount of mortar, the control unit 51 drives the first trolley 43 to move the conveyor 24 on which the disposal container 101 is mounted to the container waiting line 15 side.

[0030] The storage unit 53 is connected to the control unit 51. The control unit 51 identifies the disposal container 101 that has moved to the container waiting line 15 and grasps the filling amount of the mortar in the identified disposal container 101. The control unit 51 associates the disposal container 101 that has moved to the container waiting line 15 with the filling amount of the mortar and stores it in the storage unit 53. The storage unit 53 stores information in which the disposal container 101 on the container waiting line 15 is associated with the filling amount of the mortar. When the disposal container 101 on the container waiting line 15 is conveyed to the container conveying line 11, the control unit 51 adjusts the injection amount of the mortar into the disposal container 101 by the hardener filling device 14.

[0031] <Method for treating radioactive waste>

[0032] In the following description, among the disposal containers 101, the one in which the radioactive waste 100 is stored and not filled with mortar is referred to as the disposal container 101a, the one in which the radioactive waste 100 is stored and filled with a predetermined amount of mortar is referred to as the disposal container 101b, and the one in which the radioactive waste 100 is stored and filled with less than the predetermined amount of mortar is referred to as the disposal container 101c for explanation.

[0033] The radioactive waste treatment method of the first embodiment includes a step of carrying a disposal container 101 containing radioactive waste 100 from a loading section 12 into a container conveyance line 11, a step of filling the disposal container 101 conveyed in the container conveyance line 11 with mortar (solidifying agent), a step of carrying out of the disposal container 101 filled with a preset predetermined amount of mortar from an unloading section 13 to the outside, a step of conveying the disposal container 101 filled with less than the predetermined amount of mortar to a container standby line 15, and a step of conveying the disposal container 101 on the container standby line 15 to the loading section 12 side in the container conveyance line 11.

[0034] The radioactive waste treatment method of the first embodiment will be specifically described. As shown in FIGS. 1 to 3, when a predetermined amount of radioactive waste 100 is generated, it is necessary to store and solidify the generated radioactive waste 100 in a disposal container 101. At this time, a predetermined amount of mortar is produced with respect to the amount of radioactive waste 100 to be disposed of and stored in a solidifying agent tank 33.

[0035] Radioactive waste 100 is stored inside the disposal container 101a. The disposal container 101a is conveyed in the direction of arrow A1 and carried into the loading section 12, moves in the container conveyance line 11 in the direction of arrow A2, and stops on a conveyor 22. Here, the solidifying agent filling device 14 operates, and the injection device 31 injects mortar into the disposal container 101a stopped on the conveyor 22.

[0036] When the disposal container 101a on the transfer conveyor 22 is filled with a predetermined amount of mortar, the operation of the solidifying agent filling device 14 stops, and each of the transfer conveyors 22, 23, 24 on the container transfer line 11 operates. The radioactive waste 100 is stored, and the disposal container 101a filled with a predetermined amount of mortar moves in the direction of arrow A2 and is conveyed to the carry-out section 13. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101b filled with a predetermined amount of mortar. Therefore, the control unit 51 drives the transfer conveyor 24 to convey the disposal container 101b in the direction of arrow A3 and discharges it to the outside from the carry-out section 13. Through such a series of operations, a plurality of disposal containers 101a storing the radioactive waste 100 are discharged to the outside from the carry-out section 13 as the disposal containers 101b after being filled with a predetermined amount of mortar.

[0037] Then, due to the above-described mortar filling operation, the storage amount of the mortar stored in the solidifying agent tank 33 decreases. Then, a situation occurs where the solidifying agent filling device 14 cannot inject a predetermined amount of mortar into the disposal container 101a on the transfer conveyor 22 by the injection device 31. For example, a situation occurs where the injection device 31 can only inject half of the predetermined amount of mortar into the disposal container 101a on the transfer conveyor 22. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101c that has not been filled with a predetermined amount of mortar. Therefore, the control unit 51 drives the first carriage 43 to convey the transfer conveyor 24 of the carry-out section 13 in the direction of arrow B1 and convey it to the container standby line 15.

[0038] That is, the first moving carriage 43 conveys the conveying conveyor 24 carrying the disposal container 101c in the direction of arrow B1 at the position of the unloading section 13 of the container conveying line 11 and stops it at a position adjacent to the standby conveyor 41. Then, by driving the conveying conveyor 24, the disposal container 101c on the conveying conveyor 24 is moved in the direction of arrow B3 and conveyed to the standby conveyor 41. Thereafter, the first moving carriage 43 conveys the empty conveying conveyor 24 in the direction of arrow B2 and returns it to the unloading section 13. By driving the standby conveyor 41, the disposal container 101c is moved in the direction of arrow B3 and positioned at the downstream end in the conveying direction of the standby conveyor 41.

[0039] Again, when a predetermined amount of radioactive waste 100 is generated, a predetermined amount of mortar is produced with respect to the amount of the radioactive waste 100 to be disposed of and stored in the solidifying agent tank 33. Then, by the above-described series of mortar filling operations, a predetermined amount of mortar is injected into the disposal container 101a storing the radioactive waste 100, and it is carried out of the unloading section 13 as the disposal container 101b to the outside. At this time, if necessary, the disposal container 101c on the container standby line 15 is conveyed to the loading section 12 side in the container conveying line 11 and processed.

[0040] That is, the second moving carriage 44 moves in the direction of arrow B5 and moves the empty conveying conveyor 21 located at the loading section 12 to a position adjacent to the standby conveyor 41. Here, by driving the standby conveyor 41, the disposal container 101c on the standby conveyor 41 is moved in the direction of arrow B3 and conveyed to the conveying conveyor 21. Then, the second moving carriage 44 moves in the direction of arrow B4 and moves the conveying conveyor 21 to the loading section 12. Then, the disposal container 101c with the mortar not reaching the predetermined amount will be located at the loading section 12. Thereafter, by driving the conveying conveyors 21 and 22, the disposal container 101c is moved in the direction of arrow A2 and moved to the mortar filling position in the container conveying line 11. Here, the solidifying agent filling device 14 operates, and the injection device 31 injects the insufficient mortar into the disposal container 101c.

[0041] When the disposal container 101c on the transfer conveyor 22 is filled with a predetermined amount of mortar, each of the transfer conveyors 22, 23, 24 operates, the radioactive waste 100 is stored, and the disposal container 101c filled with the predetermined amount of mortar moves in the direction of arrow A2 and is conveyed to the carry-out section 13. Based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101c is the disposal container 101b filled with the predetermined amount of mortar. Therefore, the control unit 51 drives the transfer conveyor 24 to convey the disposal container 101b in the direction of arrow A3 and discharges it to the outside from the carry-out section 13.

[0042] Even when the storage amount of the mortar in the hardening agent tank 33 decreases in this way and it is not possible to inject a predetermined amount of mortar into the disposal container 101a, the remaining mortar is injected into the disposal container 101a. Then, the disposal container 101c filled with less than the predetermined amount of mortar is not carried out to the outside from the carry-out section 13 but is made to wait on the container standby line 15. After that, if necessary, this disposal container 101c is returned from the container standby line 15 to the container transfer line 11 to fill the insufficient mortar. Therefore, it is not necessary to discard the surplus mortar.

[0043] [Second Embodiment] FIG. 4 is a plan view showing the radioactive waste treatment apparatus of the second embodiment. Members having the same functions as those in the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0044] As shown in FIG. 4, the radioactive waste treatment apparatus 10A includes a container transfer line 11A, a carry-in section 12, a carry-out section 13, a hardening agent filling device 14, and a container standby line 15A. Here, the carry-in section 12, the carry-out section 13, and the hardening agent filling device 14 are substantially the same as those in the first embodiment.

[0045] The container conveyance line 11A is capable of conveying the disposal container 101 storing the radioactive waste 100. The container conveyance line 11A is configured by arranging a plurality (five in this embodiment, but the number is not limited) of conveyance conveyors 21, 22, 23, 24, 25 in series. The conveyance conveyors 21, 22, 23, 24, 25 are roller conveyors and can be driven independently by a driving device (not shown). Therefore, by driving the conveyance conveyors 21, 22, 23, 24, 25, the disposal container 101 can be conveyed from the conveyance conveyor 21 to the conveyance conveyor 25.

[0046] The loading section 12 is provided at the upstream end in the conveyance direction in the container conveyance line 11A. The conveyance conveyor 21 constituting the container conveyance line 11A also serves as the loading section 12. The unloading section 13 is provided at the upstream end in the conveyance direction in the container conveyance line 11A. The conveyance conveyor 21 constituting the container conveyance line 11A also serves as the unloading section 13. However, the conveyance conveyor 25 constituting the container conveyance line 11A may also serve as the unloading section 13. The solidifying agent filling device 14 injects and fills mortar into the disposal container 101 stopped in the container conveyance line 11A. The solidifying agent filling device 14 has an injection device 31.

[0047] The container standby line 15A is connected to the container conveyance line 11A to convey the disposal container 101 in the container conveyance line 11A and temporarily hold it in standby. The container standby line 15A conveys the disposal container 101 on the downstream side in the conveyance direction in the container conveyance line 11A relative to the solidifying agent filling device 14 to the upstream side in the conveyance direction in the container conveyance line 11A relative to the solidifying agent filling device 14. The container standby line 15A connects the downstream end in the conveyance direction in the container conveyance line 11A and the upstream end in the conveyance direction in the container conveyance line 11A. Also, the container standby line 15A can hold a plurality of disposal containers 101 storing the radioactive waste 100 and filled with mortar in standby.

[0048] The container standby line 15A connects the conveyor 25 that constitutes the container transfer line 11A and the conveyor 21 configured as the loading section 12 and the unloading section 13 in the container transfer line 11A.

[0049] The container standby line 15A is L-shaped in plan view. The container standby line 15A includes a first standby conveyor 61, a second standby conveyor 62, and a moving device 63. The first standby conveyor 61 is arranged in parallel with a space from the container transfer line 11A. The second standby conveyor 62 is positioned with a space between the container transfer line 11A and the first standby conveyor 61 and is arranged in parallel with the container transfer line 11A. The first standby conveyor 61 is constituted by conveyors 25 and 26. The first standby conveyor 61 and the second standby conveyor 62 are roller conveyors and can be driven by a driving device (not shown).

[0050] The moving device 63 moves the disposal container 101 among the container transfer line 11A, the first standby conveyor 61, and the second standby conveyor 62. The moving device 63 includes a first moving carriage 64, a second moving carriage 65, and a third moving carriage 66. The first moving carriage 64, the second moving carriage 65, and the third moving carriage 66 are, for example, traversers capable of reciprocating on the conveyors 25, 26, and 21.

[0051] The first moving carriage 64 is arranged along a direction orthogonal to the container transfer line 11A and the first standby conveyor 61. The first moving carriage 64 moves the disposal container 101 from the downstream side in the transfer direction in the container transfer line 11A to the upstream side in the transfer direction in the first standby conveyor 61. That is, the first moving carriage 64 can reciprocate on the conveyor 25 between the container transfer line 11A and the first standby conveyor 61. Therefore, when the disposal container 101 is mounted on the conveyor 25, the first moving carriage 64 can move the disposal container 101 mounted on the conveyor 25 from the container transfer line 11A to the first standby conveyor 61. Also, after the disposal container 101 on the conveyor 25 has moved to the first standby conveyor 61, the first moving carriage 64 can move the empty conveyor 25 to the container transfer line 11A.

[0052] The second mobile cart 65 is arranged along a direction orthogonal to the first standby conveyor 61 and the second standby conveyor 62. The second mobile cart 65 moves the disposal container 101 from the downstream side in the conveying direction of the first standby conveyor 61 to the upstream side in the conveying direction of the second standby conveyor 62. That is, the second mobile cart 65 can reciprocate the conveying conveyor 25 between the first standby conveyor 61 and the second standby conveyor 62. Therefore, when the disposal container 101 is mounted on the conveying conveyor 26 at the downstream end of the first standby conveyor 61, the second mobile cart 65 can move the disposal container 101 mounted on the conveying conveyor 26 from the first standby conveyor 61 to the second standby conveyor 62. Also, after the disposal container 101 on the conveying conveyor 26 has moved to the second standby conveyor 62, the second mobile cart 65 can move the empty conveying conveyor 26 to the first standby conveyor 61.

[0053] The third mobile cart 66 is arranged along a direction orthogonal to the container conveying line 11A and the second standby conveyor 62. The third mobile cart 66 moves the disposal container 101 from the downstream side in the conveying direction of the second standby conveyor 62 to the upstream side in the conveying direction of the container conveying line 11A. That is, the third mobile cart 66 can reciprocate the conveying conveyor 21 between a position adjacent to the second standby conveyor 62 and the position of the loading section 12 in the container conveying line 11A. Therefore, when the disposal container 101 is mounted on the conveying conveyor 21 at a position adjacent to the downstream end of the second standby conveyor 62, the third mobile cart 66 can move the disposal container 101 mounted on the conveying conveyor 21 from the second standby conveyor 62 to the loading section 12. Also, after the disposal container 101 on the conveying conveyor 21 has moved to the conveying conveyor 22, the third mobile cart 66 can move the empty conveying conveyor 21 to the second standby conveyor 62.

[0054] The disposal container 101a contains the radioactive waste 100 inside, is conveyed in the direction of arrow A1, conveyed from the loading section 12 to the container conveyance line 11A, moves in the direction of arrow A2, and stops on the conveyor 22. Here, the solidifying agent filling device 14 operates, and the injection device 31 injects mortar into the disposal container 101a that has stopped on the conveyor 22.

[0055] When a predetermined amount of mortar is filled into the disposal container 101a on the conveyor 22, the operation of the solidifying agent filling device 14 stops. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101b filled with a predetermined amount of mortar. Therefore, the control unit 51 reversely operates each of the conveyors 22 and 23 on the container conveyance line 11A, moves the disposal container 101a containing the radioactive waste 100 and filled with a predetermined amount of mortar in the direction of arrow A3, then conveys it in the direction of arrow A4, and discharges it to the outside from the unloading section 13. Through such a series of operations, a plurality of disposal containers 101a containing the radioactive waste 100 are discharged to the outside from the unloading section 13 as disposal containers 101b after being filled with a predetermined amount of mortar.

[0056] When the storage amount of the mortar stored in the solidifying agent tank 33 decreases, a situation occurs where the injection device 31 cannot inject a predetermined amount of mortar into the disposal container 101a on the conveyor 22. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101c that has not been filled with a predetermined amount of mortar. Therefore, the control unit 51 drives the conveyors 22, 23, 24, and 25, moves the disposal container 101c to the conveyor 25, then drives the first trolley 64 to convey the conveyor 25 in the direction of arrow B1, and conveys it to the container standby line 15A.

[0057] That is, the first moving cart 64 is located at the downstream end of the container conveyance line 11A, conveys the conveyance conveyor 25 on which the disposal container 101c is mounted in the direction of arrow B1, and moves it to the first standby conveyor 61. Then, by driving the conveyance conveyors 25 and 26, the disposal container 101c on the conveyance conveyor 25 is moved in the direction of arrow B3 and conveyed to the conveyance conveyor 26. Subsequently, the second moving cart 65 is located at the downstream end of the first standby conveyor 61, conveys the conveyance conveyor 26 on which the disposal container 101c is mounted in the direction of arrow B4, and moves it to the second standby conveyor 62. Then, by driving the conveyance conveyor 26, the disposal container 101c on the conveyance conveyor 26 is moved in the direction of arrow B6 and conveyed to the second standby conveyor 62.

[0058] Thereafter, the first moving cart 64 conveys the empty conveyance conveyor 25 in the direction of arrow B2 and returns it to the container conveyance line 11A. Also, the second moving cart 65 conveys the empty conveyance conveyor 26 in the direction of arrow B5 and returns it to the first standby conveyor 61. Then, by driving the second standby conveyor 62, the disposal container 101c is moved in the direction of arrow B6 and positioned at the downstream end in the conveyance direction of the second standby conveyor 62.

[0059] Again, when a predetermined amount of radioactive waste 100 is generated, new mortar is manufactured and stored in the solidifying agent tank 33. Then, by the above-described series of mortar filling operations, a predetermined amount of mortar is injected into the disposal container 101a in which the radioactive waste 100 is stored, and it is carried out of the carry-out section 13 as the disposal container 101b to the outside. At this time, if necessary, the disposal container 101c on the container standby line 15A is conveyed to the carry-in section 12 side in the container conveyance line 11A and processed.

[0060] That is, the third moving carriage 66 moves in the direction of arrow B8 and moves the empty conveying conveyor 21 located in the loading section 12 to a position adjacent to the second standby conveyor 62. Here, when the second standby conveyor 62 is driven, the disposal container 101c on the second standby conveyor 62 moves in the direction of arrow B6 and is conveyed to the conveying conveyor 21. Then, the third moving carriage 66 moves in the direction of arrow B7 and moves the conveying conveyor 21 to the loading section 12. Then, the disposal container 101c filled with mortar less than the predetermined amount will be located in the loading section 12. Thereafter, by driving the conveying conveyors 21 and 22, the disposal container 101c is moved in the direction of arrow A2 and moved to the mortar filling position in the container conveying line 11A. Here, the solidifying agent filling device 14 operates, and the injection device 31 injects the mortar insufficient in the disposal container 101c.

[0061] When the disposal container 101c on the conveying conveyor 22 is filled with a predetermined amount of mortar, the control unit 51 recognizes, based on the measurement result of the filling amount sensor 52, that the disposal container 101c is the disposal container 101b filled with a predetermined amount of mortar. Therefore, the control unit 51 causes the respective conveying conveyors 21 and 22 to reverse, and the disposal container 101c in which the radioactive waste 100 is stored and filled with a predetermined amount of mortar is moved in the direction of arrow A3, conveyed to the unloading section 13, and then conveyed in the direction of arrow A4 and discharged to the outside from the unloading section 13.

[0062] Even when the reserved amount of mortar in the solidifying agent tank 33 thus decreases and it is not possible to inject a predetermined amount of mortar into the disposal container 101a, the remaining mortar is injected into the disposal container 101a. And the disposal container 101c filled with mortar less than the predetermined amount is made to wait in the container standby line 15A without being unloaded from the unloading section 13 to the outside. Thereafter, if necessary, this disposal container 101c is returned from the container standby line 15A to the container conveying line 11A to fill the insufficient mortar. Therefore, it becomes unnecessary to discard the surplus mortar.

[0063] [Third Embodiment] FIG. 5 is a plan view showing a radioactive waste treatment apparatus according to the third embodiment. Members having the same functions as those in the above-described second embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0064] As shown in FIG. 5, the radioactive waste treatment apparatus 10B includes a container conveyance line 11B, a loading section 12, an unloading section 13, a solidifying agent filling device 14, and a container standby line 15B. Here, the loading section 12, the unloading section 13, and the solidifying agent filling device 14 are substantially the same as those in the second embodiment.

[0065] The container conveyance line 11B is capable of conveying a disposal container 101 containing radioactive waste 100. The container conveyance line 11B is configured by arranging a plurality (in this embodiment, three, but the number is not limited) of conveyor belts 21, 22, and 23 in series.

[0066] The loading section 12 is provided at the upstream end in the conveyance direction in the container conveyance line 11B. The conveyor belt 21 constituting the container conveyance line 11B also serves as the loading section 12. The unloading section 13 is provided at the upstream end in the conveyance direction in the container conveyance line 11B. The conveyor belt 21 constituting the container conveyance line 11B also serves as the unloading section 13. The solidifying agent filling device 14 injects and fills mortar into the disposal container 101 stopped in the container conveyance line 11B. The solidifying agent filling device 14 has an injection device 31.

[0067] The container standby line 15B is connected to the container conveyance line 11B to convey and temporarily standby the disposal container 101 in the container conveyance line 11B. The container standby line 15B conveys the disposal container 101 on the downstream side in the conveyance direction in the container conveyance line 11B with respect to the solidifying agent filling device 14 to the upstream side in the conveyance direction in the container conveyance line 11B with respect to the solidifying agent filling device 14. The container standby line 15B connects the downstream end in the conveyance direction in the container conveyance line 11B and the upstream end in the conveyance direction in the container conveyance line 11B. Further, the container standby line 15B can standby a plurality of disposal containers 101 containing radioactive waste 100 and filled with mortar.

[0068] The container standby line 15B connects the conveyor 253 that constitutes the container transfer line 11B and the conveyor 21 configured as the loading section 12 and the unloading section 13 in the container transfer line 11B.

[0069] The container standby line 15B is in a T shape in plan view. The container standby line 15B includes a standby conveyor 71, a loop line 72, a rotating device 73, and a moving device 74. The standby conveyor 71 is arranged in parallel with a space from the container transfer line 11B. The loop line 72 is connected to the downstream side in the transfer direction in the container transfer line 11B and the upstream side in the transfer direction in the standby conveyor 71 to transfer the disposal container 101 in a loop shape. The loop line 72 is configured by arranging a plurality of conveyors 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 in a loop shape. The conveyors 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 are roller conveyors and can be driven by a driving device (not shown).

[0070] The rotating device 73 is arranged between the container transfer line 11B and the loop line 72 and between the standby conveyor 71 and the loop line 72, and has a plurality of turntables 91, 92, 93, 94, 95, 96 for changing the transfer direction of the disposal container. The turntables 91, 92, 93, 94, 95, 96 and, for example, the conveyors 76, 78, 79, 85, 86, 88 are turn transfers that can reciprocally rotate. The moving device 74 moves the disposal container 101 between the container transfer line 11B and the standby conveyor 71. The moving device 74 is a moving carriage and, for example, is a traverser that can reciprocally move the conveyor 21.

[0071] The mobile device (mobile trolley) 74 is arranged along a direction orthogonal to the container conveyance line 11B and the standby conveyor 71. The mobile device 74 moves the disposal container 101 from the downstream side in the conveyance direction on the standby conveyor 71 to the upstream side in the conveyance direction on the container conveyance line 11B. That is, the mobile device 74 can reciprocate the conveyance conveyor 21 between a position adjacent to the standby conveyor 71 and the position of the loading section 12 on the container conveyance line 11B. Therefore, when the disposal container 101 is mounted on the conveyance conveyor 21 at a position adjacent to the downstream end of the standby conveyor 71, the mobile device 74 can move the disposal container 101 mounted on the conveyance conveyor 21 from the standby conveyor 71 to the loading section 12. Also, after the disposal container 101 on the conveyance conveyor 21 has moved to the conveyance conveyor 22, the mobile device 74 can move the empty conveyance conveyor 21 to the standby conveyor 71.

[0072] Further, the control unit 51 drives and controls the container standby line 15B based on the measurement results of the filling amount sensors 52 (both shown in FIG. 3), thereby selectively conveying a specific disposal container 101 waiting on the container standby line 15B to the container conveyance line 11B. That is, the control unit 51 selects a disposal container 101 having a specific mortar filling amount from among the plurality of disposal containers 101 waiting on the loop line 72 and conveys it to the container conveyance line 11B.

[0073] The disposal container 101a has radioactive waste 100 stored therein, is conveyed in the direction of arrow A1, is conveyed from the loading section 12 to the container conveyance line 11B, moves in the direction of arrow A2, and stops on the conveyance conveyor 22. Here, the solidifying agent filling device 14 operates, and the injection device 31 injects mortar into the disposal container 101a stopped on the conveyance conveyor 22.

[0074] When a disposal container 101B on the transfer conveyor 22 is filled with a predetermined amount of mortar, the operation of the curing agent filling device 14 stops. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101b filled with the predetermined amount of mortar. Therefore, the control unit 51 reversely operates each of the transfer conveyors 22 and 23 of the container transfer line 11B, moves the disposal container 101B in which the radioactive waste 100 is stored and which is filled with the predetermined amount of mortar in the direction of arrow A3, then conveys it in the direction of arrow A4, and discharges it to the outside from the unloading unit 13. By such a series of operations, the plurality of disposal containers 101a in which the radioactive waste 100 is stored are discharged to the outside from the unloading unit 13 as the disposal container 101b after being filled with the predetermined amount of mortar.

[0075] Then, when the storage amount of the mortar stored in the curing agent tank 33 decreases, a situation occurs where the injection device 31 cannot inject a predetermined amount of mortar into the disposal container 101a on the transfer conveyor 22. At this time, based on the measurement result of the filling amount sensor 52, the control unit 51 recognizes that the disposal container 101a is the disposal container 101c that has not been filled with the predetermined amount of mortar. Therefore, the control unit 51 drives the transfer conveyors 22 and 23, conveys the disposal container 103c in the direction of arrow B1, and conveys it to the container standby line 15B.

[0076] That is, first, the control unit 51 drives the conveyor belts 22 and 23 to move the disposal container 101c to the conveyor belt 23. Also, in the loop line 72, for example, when the disposal container 101c is not mounted on the conveyor belt 76 facing the conveyor belt 23, the control unit 51 stops all the conveyor belts 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89. Next, the control unit 51 rotates the turntable 91 by 90 degrees in the direction of arrow B2 to make the conveyor belts 23 and 76 in series. Subsequently, the conveyor belts 23 and 76 are driven to convey the disposal container 101c on the conveyor belt 23 to the conveyor belt 76. Here, the control unit 51 rotates the turntable 91 by 90 degrees in the direction of arrow B2 to make the conveyor belt 76 in series with the conveyor belts 89 and 77. Then, by driving the conveyor belts 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 and the turntables 91, 92, 93, 94, 95, 96 synchronously, a plurality of disposal containers 101c are moved in the directions of arrows B3, B4, B5, B6, B7, B8, B9, B10, B11 and are made to wait in the loop line 72.

[0077] Again, when a predetermined amount of radioactive waste 100 is generated, new mortar is manufactured and stored in the solidifying agent tank 33. Then, by the above-described series of mortar filling operations, a predetermined amount of mortar is injected into the disposal container 101B containing the radioactive waste 100, and it is carried out of the carry-out unit 13 as the disposal container 101b. At this time, if necessary, the disposal container 101c waiting in the loop line 72 of the container waiting line 15B is conveyed to the carry-in unit 12 side in the container conveyor line 11B and processed.

[0078] That is, first, when a specific disposal container 101c is conveyed to a conveyor 88 facing the standby conveyor 71 on the loop line 72, the control unit 51 stops all the conveyors 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89. Next, the control unit 51 rotates the turntable 96 by 90 degrees in the direction of arrow B12 to make the conveyor 88 and the standby conveyor 71 in series. Subsequently, the control unit 51 drives the conveyor 88 and the standby conveyor 71 to move the disposal container 101c in the direction of arrow B14 and convey it to the standby conveyor 71. On the other hand, the control unit 51 rotates the turntable 96 by 90 degrees in the direction of arrow B2 to make the conveyor 88 in series with the conveyors 87, 89. Then, if necessary, by driving the conveyors 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 and the turntables 91, 92, 93, 94, 95, 96 synchronously, a plurality of disposal containers 101c are moved in the directions of arrows B3, B4, B5, B6, B7, B8, B9, B10, B11 and are made to wait on the loop line 72.

[0079] The moving device 74 moves in the direction of arrow B16 and moves the empty conveyor 21 located in the loading section 12 to a position adjacent to the standby conveyor 71. Here, by driving the standby conveyor 71, the disposal container 101c on the standby conveyor 71 is moved in the direction of arrow B14 and conveyed to the conveyor 21. Then, the moving device 74 moves in the direction of arrow B15 and moves the conveyor 21 to the loading section 12. Then, the disposal container 101c filled with mortar less than a predetermined amount will be located in the loading section 12. Thereafter, by driving the conveyors 21, 22, the disposal container 101c is moved in the direction of arrow A2 and moved to the mortar filling position on the container conveying line 11B. Here, the solidifying agent filling device 14 operates and the injection device 31 injects the mortar insufficient in the disposal container 101c.

[0080] When a disposal container 101c on the transfer conveyor 22 is filled with a predetermined amount of mortar, the control unit 51 recognizes, based on the measurement result of the filling amount sensor 52, that the disposal container 101c is the disposal container 101b filled with the predetermined amount of mortar. Therefore, the control unit 51 causes each of the transfer conveyors 21 and 22 to reverse, and the disposal container 101c in which the radioactive waste 100 is stored and filled with the predetermined amount of mortar moves in the direction of arrow A3, is conveyed to the carry-out unit 13, and then is conveyed in the direction of arrow A4 and discharged to the outside from the carry-out unit 13.

[0081] Even when the storage amount of the mortar in the curing agent tank 33 decreases in this way and it is not possible to inject a predetermined amount of mortar into the disposal container 101B, the remaining mortar is injected into the disposal container 101B. Then, the disposal container 101c filled with less than the predetermined amount of mortar is not carried out from the carry-out unit 13 to the outside, but is made to wait on the container standby line 15B. After that, if necessary, this disposal container 101c is returned from the container standby line 15B to the container transfer line 11B to fill the insufficient mortar. Therefore, it is not necessary to discard the surplus mortar.

[0082] Note that the control unit 51 stores in the storage unit 53 the filling amounts of the mortar in the plurality of disposal containers 101 waiting on the loop line 72. Therefore, when a situation occurs in which the storage amount of the mortar stored in the curing agent tank 33 decreases and the injection device 31 cannot inject a predetermined amount of mortar into the disposal container 101a, according to the remaining amount of the mortar in the curing agent tank 33, a specific disposal container 101c that matches the remaining amount of the mortar may be selected from among the plurality of disposal containers 101c waiting on the loop line 72 and conveyed to the container transfer line 11B. That is, the disposal container 101c in which the remaining amount of the mortar and the injection amount of the mortar required to be injected into the disposal container 101c are substantially the same is selected from among the plurality of disposal containers 101c on the loop line 72 and conveyed to the container transfer line 11B.

[0083] [Operation and Effect of this Embodiment] The radioactive waste treatment apparatus according to the first aspect includes container conveyance lines 11, 11A, 11B for conveying a disposal container 101 storing radioactive waste 100, a loading section 12 for loading the disposal container 101 into the container conveyance lines 11, 11A, 11B, an unloading section 13 for unloading the disposal container 101 from the container conveyance lines 11, 11A, 11B, a solidifying agent filling device 14 for filling the disposal container 101 located in the container conveyance lines 11, 11A, 11B with mortar (solidifying agent), and container standby lines 15, 15A, 15B connected to the container conveyance lines 11, 11A, 11B for conveying and temporarily waiting the disposal container 101 located in the container conveyance lines 11, 11A, 11B.

[0084] According to the radioactive waste treatment apparatus according to the first aspect, since the container standby lines 15, 15A, 15B are provided with respect to the container conveyance lines 11, 11A, 11B where the solidifying agent filling device 14 is provided, it is possible to wait for the disposal container with an insufficient filling amount of mortar in the container standby lines 15, 15A, 15B, and it is possible to return the disposal container 101 waiting in the container standby lines 15, 15A, 15B to the container conveyance lines 11, 11A, 11B and refill with mortar again. Therefore, by injecting surplus mortar into the disposal container 101, the surplus mortar can be reduced, and the processing cost can be reduced.

[0085] The radioactive waste treatment apparatus according to the second aspect is the radioactive waste treatment apparatus according to the first aspect, and further, the container standby lines 15, 15A, 15B convey the disposal container 101 located on the downstream side in the conveyance direction from the solidifying agent filling device 14 in the container conveyance lines 11, 11A, 11B to the upstream side in the conveyance direction from the solidifying agent filling device 14 in the container conveyance lines 11, 11A, 11B. Thereby, it is possible to easily return the disposal container 101 waiting in the container standby lines 15, 15A, 15B to the container conveyance lines 11, 11A, 11B and refill with mortar again.

[0086] The radioactive waste treatment apparatus according to the third aspect is the radioactive waste treatment apparatus according to the second aspect, and further, the container standby line 15 has a U-shaped configuration in plan view and connects between the solidifying agent filling device 14 and the carry-out section 13 in the container conveyance line 11 and between the solidifying agent filling device 14 and the carry-in section 12 in the container conveyance line 11. Thereby, simplification of the container standby line 15 can be achieved.

[0087] The radioactive waste treatment apparatus according to the fourth aspect is the radioactive waste treatment apparatus according to the third aspect, and further, the container standby line 15 includes a standby conveyor 41 arranged in parallel with the container conveyance line 11 and a moving device 42 that moves the disposal container 101 between the container conveyance line 11 and the standby conveyor 41. The moving device 42 includes a first moving carriage 43 that moves the disposal container 101 from the downstream side in the conveyance direction in the container conveyance line 11 to the upstream side in the conveyance direction in the standby conveyor 41, and a second moving carriage 44 that moves the disposal container 101 from the downstream side in the conveyance direction in the standby conveyor 41 to the upstream side in the conveyance direction in the container conveyance line 11. Thereby, the container standby line 15 can be appropriately configured.

[0088] The radioactive waste treatment apparatus according to the fifth aspect is the radioactive waste treatment apparatus according to the second aspect, and further, the container standby line 15A has an L-shaped configuration in plan view and connects the downstream end portion in the conveyance direction and the upstream end portion in the conveyance direction in the container conveyance line 11A. Thereby, the container standby line 15A can be appropriately installed according to the shape of the installation position.

[0089] The radioactive waste treatment apparatus according to the sixth aspect is the radioactive waste treatment apparatus according to the fifth aspect, and further, the container standby line 15B includes a first standby conveyor 61 arranged in parallel with the container transfer line 11A, a second standby conveyor 62 arranged in parallel with the container transfer line 11A and located between the container transfer line 11A and the first standby conveyor 61, and a transfer device 63 that moves the disposal container 101 between the container transfer line 11A, the first standby conveyor 61, and the second standby conveyor 62. The transfer device 63 includes a first transfer cart 64 that moves the disposal container 101 from the downstream side in the transfer direction in the container transfer line 11A to the upstream side in the transfer direction in the first standby conveyor 61, a second transfer cart 65 that moves the disposal container 101 from the downstream side in the transfer direction in the first standby conveyor 61 to the upstream side in the transfer direction in the second standby conveyor 62, and a third transfer cart 66 that moves the disposal container 101 from the downstream side in the transfer direction in the second standby conveyor 62 to the upstream side in the transfer direction in the container transfer line 11A. Thereby, the container standby line 15A can be appropriately configured.

[0090] The radioactive waste treatment apparatus according to the seventh aspect is the radioactive waste treatment apparatus according to the second aspect, and further, the container standby line 15B has a T shape in plan view and connects the downstream end portion in the transfer direction in the container transfer line 11B and the upstream end portion in the transfer direction in the container transfer line 11B. Thereby, the container standby line 15B can be appropriately installed according to the shape of the installation position.

[0091] The radioactive waste treatment apparatus according to the eighth aspect is the radioactive waste treatment apparatus according to the seventh aspect, and further, the container standby line 15B includes a standby conveyor 71 arranged in parallel with the container transport line 11B, and a loop line 72 connected to the downstream side in the transport direction in the container transport line 11B and the upstream side in the transport direction in the standby conveyor 71 to transport the disposal container 101 in a loop shape. Rotating tables 91 and 96 are respectively arranged between the container transport line 11B and the loop line 72 and between the standby conveyor 71 and the loop line 72 to change the transport direction of the disposal container 101, and a moving device 74 is provided to move the disposal container between the container transport line 11B and the standby conveyor 71. Thereby, the container standby line 15B can be appropriately configured.

[0092] The radioactive waste treatment apparatus according to the ninth aspect is the radioactive waste treatment apparatus according to the first aspect to the eighth aspect, and further, it includes a filling amount sensor 52 for measuring the filling amount of mortar in the disposal container 101, and a control unit 51 for performing switching control on the transport destination of the disposal container 101 between the carry-out unit 13 and the container standby lines 15, 15A, and 15B based on the measurement result of the filling amount sensor 52. Thereby, the transport destination of the disposal container 101 can be automatically switched according to the filling amount of mortar in the disposal container 101.

[0093] The radioactive waste treatment apparatus according to the tenth aspect is the radioactive waste treatment apparatus according to the ninth aspect, and further, the control unit 51 drives and controls the container standby line 15B based on the measurement result of the filling amount sensor 52 to selectively transport the disposal container 101 on the container standby line 15B to the container transport line 11B. Thereby, an appropriate amount of mortar can be filled into the disposal container 101 whose mortar filling amount is less than a predetermined amount.

[0094] The method for treating radioactive waste according to the 11th aspect includes a step of loading a disposal container 101 containing radioactive waste 100 from the loading section 12 into the container transfer lines 11, 11A, 11B, a step of filling the disposal container 101 conveyed in the container transfer lines 11, 11A, 11B with mortar (solidifying agent), a step of unloading the disposal container 101 filled with a preset predetermined amount of mortar from the unloading section 13 to the outside, a step of conveying the disposal container 101 filled with mortar less than the predetermined amount to the container standby lines 15, 15A, 15B, and a step of conveying the disposal container 101 in the container standby lines 15, 15A, 15B to the loading section 12 side in the container transfer lines 11, 11A, 11B. Thereby, the disposal container with insufficient filling amount of mortar can be made to wait in the container standby lines 15, 15A, 15B, and the disposal container 101 waiting in the container standby lines 15, 15A, 15B can be returned to the container transfer lines 11, 11A, 11B to be filled with mortar again. Therefore, by injecting surplus mortar into the disposal container 101, the surplus mortar can be reduced, and the treatment cost can be reduced.

[0095] In the above-described embodiment, the container standby lines 15, 15A, 15B are in a U shape, an L shape, or a T shape. However, the shape is not limited to the above-described ones. The shape of the container standby line may be appropriately set according to the installation position of the radioactive waste treatment apparatuses 10, 10A, 10B and the surrounding shape.

[0096] Also, in the above-described embodiment, the radioactive waste treatment apparatuses 10, 10A, 10B are in a loop shape. However, for example, it may be arranged in a T shape such that a linearly arranged container standby line intersects a linearly arranged container transfer line.

[0097] Also, in the above-described embodiment, the disposal container 101 filled with mortar less than a predetermined filling amount is made to wait in the container standby lines 15, 15A, 15B. However, a disposal container containing radioactive waste 100 but not filled with mortar or a disposal container without radioactive waste 100 may be made to wait.

Explanation of Symbols

[0098] 10, 10A, 10B Radioactive waste treatment device 11, 11A, 11B Container conveying line 12 Loading section 13 Unloading section 14 Solidifying agent filling device 15, 15A, 15B Container waiting line 21, 22, 23, 24, 25, 26 Conveyor 31 Injection device 32 Supply hose 33 Solidifying agent tank 34 Moving mechanism 41 Waiting conveyor 42 Moving device 43 First moving trolley 44 Second moving trolley 51 Control section 52 Filling amount sensor 53 Memory section 61 First waiting conveyor 62 Second waiting conveyor 63 Moving device 64 First moving trolley 65 Second moving trolley 66 Third moving trolley 71 Waiting conveyor 72 Loop line 73 Rotating device 74 Moving device 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 Conveyor 91, 92, 93, 94, 95, 96 Rotating table 100 Radioactive waste 101, 101a, 101b, 101c Disposal container

Claims

1. A container conveyance line for conveying a disposal container storing radioactive waste, a loading section for loading the disposal container into the container conveyance line, an unloading section for unloading the disposal container filled with a preset amount of solidifying agent from the container conveyance line, a solidifying agent filling device for filling the disposal container on the container conveyance line with the solidifying agent, a container standby line connected to the container conveyance line for conveying and temporarily waiting the disposal container on the container conveyance line filled with less than the preset amount of solidifying agent, comprising: The container standby line conveys the disposal container on the downstream side in the conveyance direction from the solidifying agent filling device on the container conveyance line to the upstream side in the conveyance direction from the solidifying agent filling device on the container conveyance line, forms a T shape in plan view, and connects the downstream end in the conveyance direction on the container conveyance line and the upstream end in the conveyance direction on the container conveyance line. A radioactive waste treatment device.

2. The container standby line includes a standby conveyor arranged in parallel with the container conveyance line, a loop line connected to the downstream side in the conveyance direction on the container conveyance line and the upstream side in the conveyance direction on the standby conveyor for conveying the disposal container in a loop shape, a rotating device arranged between the container conveyance line and the loop line and between the standby conveyor and the loop line for changing the conveyance direction of the disposal container, and a moving device for moving the disposal container between the container conveyance line and the standby conveyor. The radioactive waste treatment device according to Claim 1.

3. a filling amount sensor for measuring the filling amount of the solidifying agent in the disposal container, and a control section for performing switching control of the conveyance destination of the disposal container between the unloading section and the container standby line based on the measurement result of the filling amount sensor. The radioactive waste treatment device according to Claim 1 or Claim 2.

4. The control section drives and controls the container standby line based on the measurement result of the filling amount sensor to selectively convey the disposal container on the container standby line to the container conveyance line. The radioactive waste treatment device according to Claim 3.

5. In the radioactive waste treatment device according to any one of Claims 1 to 4, a step of loading a disposal container storing radioactive waste from the loading section into the container conveyance line, A step of filling a solidifying agent into the disposal container conveyed on the container conveyance line; A step of carrying out the disposal container filled with a preset predetermined amount of the solidifying agent from the carry-out section; A step of conveying the disposal container filled with the solidifying agent less than the predetermined amount to a container standby line; A step of conveying the disposal container on the container standby line to the carry-in section side in the container conveyance line; A method for treating radioactive waste having the above steps.

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