JPS5997099A - Device for volume-decreasing radioactive non-combustible solid waste - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention compresses and reduces the volume of non-combustible miscellaneous solid waste such as pipes and valves generated in an atomic couplant into a disk shape, and stores it in a container. The present invention relates to an appearance processing device suitable for

[Prior art]

Non-combustible miscellaneous solid waste generated in nuclear power plants is generally stored in a container for a certain period of time after being treated, and then disposed of. However, in the past, metals and inorganic materials such as pipes and pulp were not subjected to volume reduction treatment, but were simply cut into large pieces and stored in drums, resulting in an increase in the amount of drums generated. was. Therefore, in order to improve the efficiency of storage space, it is being considered to compress drums containing metals and inorganic materials as they are to reduce their volume.

However, when this method is used, the impact ratio is low and the waste is not filled with an assimilate agent when it is stored in the drum, so there is a risk that the waste inside may leak out if the drum corrodes and breaks. It has some drawbacks.

[Purpose of the invention]

The present invention has been made in order to eliminate the drawbacks of the prior art, and an object of the present invention is to provide a volume reduction treatment apparatus for radioactive non-combustible solid waste that can obtain a large volume reduction ratio.

[Summary of the invention]

In the present invention, the pressure of radioactive non-combustible solid waste is increased to Km7) Kg before storing it in a container, and a solidifying agent stored in the container is injected into the compressed solid waste, so that a large volume reduction ratio P can be obtained. It is composed of

[Embodiments of the invention]

In order to efficiently reduce the volume of non-flammable miscellaneous solid waste such as radioactive pipes and pulp, it is necessary to consider the following points.

(1) Separate non-combustible miscellaneous solid waste into those large enough to be stored in containers as they are and those large enough to not be stored in containers as they are.

(2) The solid waste selected as described above is compressed into a shape suitable for storage in a container using a compression method suitable for the solid waste.

(3) Transfer the compressed solid waste to containers (4
) It must be taken into consideration that the solidifying agent filled in the container is difficult to penetrate into the compacted solid waste.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the volume reduction treatment apparatus for radioactive non-combustible solid waste according to the present invention will be described in detail below with reference to FIGS. 1 to 4.

FIG. 1 is a diagram showing the basic concept of a treatment process using the volume reduction treatment apparatus for radioactive non-combustible solid waste according to the present invention. In FIG. 1, non-combustible miscellaneous solid waste 10 is input into a sorter 12, and is divided into those of a size that can be stored in a container as is,
They are sorted into those that are too large to be stored in containers as they are.

Non-flammable miscellaneous solid waste 10 of a size that can be stored as is in a container, such as inorganic powder and granules, amorphous metals, etc., is placed into a formwork 14 having a cylindrical storage section in the center. , compressed from above by a compressor d16 having a cylindrical compression part, formed into a disk shape, and a disk-shaped waste 17
become.

On the other hand, non-flammable miscellaneous solid waste 10 having a size that cannot be stored in a container as it is is put into a horizontal compressor 20 as shown by arrow 18, compressed into a substantially cylindrical shape, and then compressed in the same manner as above. The waste material 17 is formed into a disc-shaped waste material 17 by the machine 16 .

The disk-shaped waste 17 formed as described above is set in a drum can 22 which is a container, and is stored in the drum can 22 in a stacked manner. Thereafter, a solidifying agent is filled into the drum 22 using the solidifying agent injection device 24, and a temporary curing is performed. Then, the drum can 22 is temporarily cured by filling the solidifying agent injector 26 again with assimilating agent whose volume has been reduced during temporary curing (post-feeling), and finally, the drum can 22 is temporarily cured.
Cover the drum with a lid 28 and store it in a storage place.

FIG. 2 is a plan view showing the waste treatment process by a volume reduction treatment apparatus according to an actual sister example of the present invention, and FIG. 3 is a side view. Compression device t3 shown in FIG.
0 has a mold 14 and a first compression element 36 in a groove 34 of a base 32. The formwork 14 has a cylindrical input space 38 formed in the center, and the first compression element 36 has a semi-cylindrical notch in the center at the tip (the left end in FIG. 2). 40 is formed. These forms 1
4 and the first compressed rice element 36 slide along the groove 34.
The first compression element 36 is movable and can be moved above the base 32.

A horizontal compression section 42 is connected to one end of the base 32 (the left end in FIG. 2). This horizontal pressure, the depression 42 is
As shown in FIG. 4, a compression table 44 is provided opposite the tip of the first compression element 36, and a second compression element 46 and a third compression element are slidable along the end surface of the compression table 44. 48 is provided. The second compression element 46 has a distal end facing the third compression element 48.
It has a half-day columnar notch 50 in the center, and the notch gradually recedes from both ends toward the center. Moreover, the tip of the second compression element 46 is
A plurality of grooves 52 are formed along the horizontal direction so that the comb-shaped tip 54 of the third compression element 48 can be received therein. Same, third compression element 4
A semi-cylindrical notch 56 is formed at the center of the tip of the second compression element 46 and the third compression element 4.
When the notches 8 and 8 are engaged, the notch 50 and the notch 56 form a cylindrical space.

Compression of the non-flammable miscellaneous solid waste 10 by the compression device 30 described above is performed as follows. As shown in FIG. 2, the non-combustible miscellaneous solid waste 10 is put into a sorter 12, and those with a smaller inner diameter of the drum can 22 are put into the input space 38 of the formwork 14 as shown by the arrow 60. be done. After that, the first pressure sardine element 36 is moved above the pace 32, and the formwork 1
4 to the left in FIG. 2 to bring the formwork 14 into contact with the end surface of the compressed body 44. Then, the non-combustible miscellaneous waste lO in the input space 38 is compressed from above by the compressor 16 having a cylindrical compression part, and is formed into a disc-shaped waste 17.

Non-flammable miscellaneous solid waste 10 larger than the inner diameter of a drum is
It is inserted in front of the first compression element 36 as shown by arrow 62. The non-flammable miscellaneous solid waste charged in front of the first compression element 36 is pressed against the side of the compression table 44 by the leftward movement of the first compression element 36 in FIG. subject to compression. After the first compression element 36 has finished pressing the non-combustible miscellaneous solid waste onto the compression table 44, it retreats to its original position, and the second compression element 46 and third compression element 48 move forward to complete the first stage compression. The non-combustible miscellaneous solid waste 10 thus obtained is compressed to form a substantially cylindrical compressed body. The non-combustible and mixed solid waste 10 compressed into a substantially cylindrical shape is compressed from above by the compressor 16 and disposed of in a disc shape. ! Formed at 717.

The non-combustible miscellaneous solid waste 10 compressed into a disk shape is compressed into a shape by a manipulator 64 as shown in FIGS.
The materials are sent to a predetermined position and stacked one after another in a drum can 22. When storing the disc-shaped waste 17 in the manipulator 64 in this way, the disc-shaped waste 17 having a weight of 1,000 kg is dropped by gravity into the citrum can 22.
It is possible to prevent the drum can 22 from being deformed or damaged unlike when it is stored inside the drum can. The drum 22 containing the disc-shaped waste *J17 is placed on a solidifying agent injection table 66 as shown in
The assimilating agent is injected from the solidifying agent injection device 24 while being vibrated by the vibrator 68. As described above, the temporary material is temporarily cured and then subjected to graining by the solidifying agent press-in device 26 and cured. When the solidifying agent is completely solidified by curing, the drum can 22 is sealed with a lid 28 by a drum capping device 70. Thereafter, the sealed drum 22 is transported to a predetermined storage location and stored for a predetermined period of time. The reference numeral 72 shown in FIGS. 2 and 3 indicates a drum can that is temporarily curing, and the reference numeral 74 indicates a drum can that is currently curing.

As mentioned above, a high volume reduction ratio can be obtained by compressing the non-flammable miscellaneous solid waste 10 and storing it in a drum. Furthermore, the non-flammable miscellaneous solid waste 10, which is larger than the inner diameter of the drum, undergoes horizontal compression, which can be called preliminary compression, so that the compression ratio becomes higher. In addition, since the drum containing the disc-shaped waste 17 is filled with the assimilating agent, there is no risk of the solid waste flowing out of the drum due to corrosion of the drum 22, and the reduced volume solidified material is stable for a long period of time. can be made. Moreover, since the solidifying agent is injected while shaking the drum, the solidifying agent sufficiently penetrates into the disk-shaped waste 17. Since the radioactive waste is directly fed into the sorter and the compressed waste is stored in a drum using the manipulator 64, the radiation exposure of the workers can be reduced.

〔Effect of the invention〕

As explained above, according to the invention, a large volume reduction ratio can be obtained by compressing radiation-incombustible solid waste and storing it in a container.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the basic concept of the treatment process of radioactive non-combustible solid waste using the radioactive non-combustible solid waste volume reduction treatment apparatus according to the present invention, and Fig. 2 is a diagram showing the volume reduction treatment of the embodiment according to the present invention. FIG. 3 is a plan view of the treatment process using the apparatus, FIG. 3 is a side view of the treatment process using the actual volume treatment apparatus according to the present invention, and FIG. 4 is the volume reduction treatment apparatus according to the present invention. FIG. 3 is a partial perspective view of the compression device used in

Claims (1)

[Claims] 1. A radioactive non-combustible solid for storing and disposing of radioactive non-combustible solid waste generated in an atomic couplant in a container;
A compressor for compressing the solid waste, a conveying device for storing the compressed solid waste in the container, and a container for storing the solid waste in the volume reduction treatment equipment for the commercial industry. A solidifying agent injection device for injecting a solidifying agent into a solid waste. 2. The compressor is a compression type that compresses the solid waste of a size that can be stored in the container in one direction, and a compressor that compresses the solid waste of a size that cannot be stored in the container in three directions. 2. The volume reduction treatment apparatus for radioactive non-combustible solid waste according to claim 1, characterized in that it has a compression type.