JPS6319040B2 - - Google Patents

Description

Detailed Description of the Invention This invention relates to radioactive miscellaneous solid waste (in this specification, radioactive material itself and waste contaminated with radioactive material) generated as waste in facilities that handle radioactive materials such as nuclear power plants. This invention relates to a method for reducing the volume of radioactive miscellaneous solid waste (including radioactive solid waste).

The objective is to provide a processing method that allows waste to be easily melted.

Examples of the present application will be described below. In Figure 1, radioactive miscellaneous solid waste includes those currently being stored and those that will be generated in the future. Items currently in storage include items stored in containers, such as drums, and items stored outside the can. Confirm the contents of the items stored in drums. Small items should be kept as is, large items should be cut into smaller pieces, and sealed items should be perforated to prevent explosions and placed into simple containers, i.e., shaped containers for melting. Pack it. The waste packed in the container as described above is charged into the melting furnace together with the container. On the other hand, large items stored outside the drum, such as HEPA filters, are simply compressed and packed into the container, and the container is charged into the melting furnace. In addition, elongated items stored outside the drum are suspended and charged into the melting furnace from their lower ends. Furthermore, on the other hand,
Waste that will be generated in the future that can be easily perforated or cut on site is packed into the above-mentioned regular containers, and each container is charged into the melting furnace. In addition, large items that cannot be punched and cut are simply compressed and packed into a container in the same manner as described above, and then charged into the melting furnace, and long items are charged into the melting furnace as they are. The waste charged as described above is melted in the melting furnace. The molten material produced by the above melting is then solidified into a shape that is easy to store. The methods of solidification are: (1) Solidify in a storage container, such as a 50mm storage drum. (2) Make it into granules, dry it, and then pack it into a 200mm storage drum. (3) Form it into square blocks and pack them into a square storage container. The following methods are used.

Next, a description will be given of FIG. 2, which shows a flowchart when the above-mentioned processing steps are carried out in one building and using various equipment. First, waste is classified, for example, on the first floor. In other words, as mentioned earlier, the radioactive miscellaneous solid waste stored in 200 drums will be separated into large and small items after the contents have been confirmed. Items stored outside drums are divided into long items and large items. The above-mentioned small items can also be packaged in 50 simple containers.

Next, the small items, large items, and long items classified as described above are transported by a crane or a simple transporter. Small items will be transported in special buckets. The large objects transported by the simple transporter are then subjected to pre-processing and size reduction processing. This processing is performed, for example, on the first floor. Further, the processing is performed as follows, for example. In other words, they are cut into smaller pieces using a remote-controlled cutting machine and packed into 50 simple containers, or 610 mm square HEPA filters are pressed using a simple filter press machine and then packed into 50 pieces. This is done by stuffing it into a simple container.

Next, the waste is transported to, for example, the third floor and loaded into the furnace. In other words, small items transported in a special bucket can be transported by a bucket-type waste charging machine, or some of the small waste transported in a special bucket can be
After being packed into simple containers, each container is charged into an airtight melting furnace using a waste charging machine containing 50 containers. Further, the waste subjected to the pretreatment size reduction processing and packed into 50 simple containers is transported by a simple transporter and a crane, and then charged into the furnace by a waste charging machine containing 50 containers. In addition, long items are transported by crane and charged into the furnace using a long item waste charging machine. The airtight melting furnace is provided on the second floor, and the waste is charged into the melting furnace as follows. That is, each waste is first charged into the front chamber of the airtight melting furnace by the respective charging machines. Then, it is subsequently charged into the melting furnace main body. In the melting furnace main body, each of the above-mentioned wastes is melted. The resulting melt is then solidified into various forms in a solidification chamber. That is, it is solidified in a container, formed into square blocks, or granulated. Note that these solidification processes are performed, for example, on the first floor. The solidified material produced as described above is then carried out. This transportation is carried out by using a solidification machine to carry out the solidified products in the container or into square blocks as they are, and the granulated products into 200 drum cans.

During the above-mentioned process, radioactively contaminated dust and gas generated from the pre-treatment size reduction processing process or the airtight melting furnace are
The gas is guided to the off-gas treatment equipment installed on the floor and treated there. The melting furnace body is cleaned periodically or whenever necessary using a furnace cleaning device.

Next, each of the above-mentioned processing steps will be further explained as follows.

(1) Types and storage of waste Depending on the method of charging waste into the airtight melting furnace, it is classified into those that can be charged as is and those that require pretreatment and size reduction processing. Furthermore, if a large amount of organic matter is charged into the furnace at once, the load on the off-gas treatment equipment will be overloaded, so the organic matter is also sorted out. The classified waste will be transported and stored at each waste storage site.

The types of waste are (a) Small waste (b) Large waste (c)
There are three types of long waste.

(a) Small waste 50 Waste that can be placed directly into simple containers and bucket-type charging machines. 50 The size of the simple container is 390mmφ and 516mmH. Small waste items will be placed in special buckets and transported to the small waste storage area on the third floor for storage.

(b) Large waste 50 Waste that cannot be directly charged into a simple container or bucket type charging machine, or cannot be grasped and charged with a long material charging machine, and requires pre-treatment size reduction processing. say. Equipment such as electric motors, large valves,
There is a branch pipe and a 610mm square HEPA filter, etc.
Large waste items will be transported to a temporary large waste storage site and stored using a simple transporter or handcart.

(c) Long waste 50Although it is not possible to directly feed it into a simple container or bucket type charging machine, it does not require pre-treatment size reduction processing, and can be directly grasped by a long waste material charging machine.
It is waste that can be charged. Maximum diameter of grip part 200mm
φ, pipe with maximum length of 2m and maximum weight of 50Kg,
Refers to scaffolding materials, etc. Long waste items are removed by crane.
Transport and store long items to the long waste storage area on the floor.

(2) Pre-treatment size reduction processing Large waste materials that cannot be packed into 50 simple containers are size reduced by cutting or press processing, and made into 50 simple containers so that they can be melted. A remote-controlled cutting machine and a simple filter press machine will be installed as pre-processing size reduction processing machines. The simple filter press machine is a dedicated machine for processing 610mm square HEPA filters.

Large wastes are transferred and loaded from the large waste temporary storage area to the pre-treatment size reduction processing machine using a simple conveyor. In addition, the waste in 50 simple containers after being cut and pressed will be transported out using a simple conveyor. During waste treatment, off-gas and dust that are expected to be generated inside the press are led to the off-gas treatment system and treated. After pre-treatment and size reduction processing, the waste in 50 simple containers is
The waste is transported by crane to the waste storage area in 50 simple containers near the charging machine and stored.

The following is an outline of the waste processing procedure using a remote-controlled cutting machine and a simple filter press machine.

(a) Remote-controlled shredding machine (1) Loading waste (simple transport machine), (2) Positioning and fixing waste, (3) Cutting waste, (4) Recovery of shredded waste (50 (5) Transport of shredded waste (simple transport machine).

(b) Simple filter press machine (1) Loading and positioning of filter (simple conveyor),
(2) Punching of filter elements, (3) Compression molding of filter elements, (4) Packing of compressed filter elements into 50 simple containers, (5) Carrying out 50 simple containers and filter frames (simple transport machine).

(3) Loading waste into the furnace There are three methods for loading waste into the furnace: a method in which 50 simple containers are charged, a method in which only small wastes are directly charged, and a method in which long wastes are directly charged.
Do it in different ways. Depending on each charging method, the following 3
Install different types of charging machines. (a) 50 simple container waste charging machine (b) bucket type waste charging machine (c) long waste charging machine 50 simple container and bucket type waste charging machine Attach it to the trolley and position it. The charging machine trolley will be shared, and the charging machine will be replaced as necessary. A crane will be used to move and position the long waste loading machine.

When charging waste, a front chamber is installed at the airtight melting furnace charging port to prevent air from entering the airtight melting furnace, to prevent contamination of the charging machine, and to prevent off-gas and dust from leaking to the outside. Perform gas replacement, purge with nitrogen gas, and maintain an airtight seal with the charging machine.

The procedure for introducing waste into the reactor is shown below.

(1) Mounting and positioning the charging machine, (2) Grasping the waste, (3) Lowering the charging machine and setting it on the front chamber, (4) Air-nitrogen gas in the front chamber and inside the charging machine. Replacement, (5) Inserting waste into the furnace, releasing grip, (6) Lifting the gripper and charging machine.

(4) Melting and solidification In order to melt and solidify the charged waste, an airtight plasma melting type melting furnace body and a solidification chamber will be installed. The airtight melting furnace body has a completely airtight structure and operates under negative pressure to prevent off-gas and dust leakage.
It is also connected to an off-gas processing device for processing off-gas and dust. Two solidification chambers are provided: a solidification chamber for granulation, and a solidification chamber for square block formation and solidification inside the container. Granulation is performed using a dry disk method.

The melting and solidification procedure is shown below.

(1) Formation of molten metal (melting of base metal) (2) Charge of waste (waste charging machine) (3) Melting of waste (4) Tapping For granulation, for each melting of 50 simple containers In the case of forming square blocks and solidifying in the container, pour out the melt every 4 cans of 50 simple containers (5) Solidification In the case of granulation (a) Pouring onto a disc (b) Dispersion of the molten metal (c) Granulation (d) Transport, cooling and storage In the case of forming into square blocks and solidifying in a container (a) Pouring into a mold or container (b) Cooling and solidification (c) Storage (cooling) (5) Carrying out the solidified material Storage and cooling in the solidification room The solidified material is transported out by a solidified material transporter. The solidified material transport machine will be a manual forklift and will be shared by each solidified material. The square block solidified bodies and the solidified bodies in the container are carried out as they are, and the granular solidified bodies are carried out together.

(6) Off-gas treatment Off-gas and dust for the airtight melting furnace and pre-treatment size reduction processing machine will be treated using off-gas treatment equipment. As a general rule, the off-gas from airtight melting furnaces and pre-treatment size reduction processing machines is
Process individually. The off-gas generated in the airtight melting furnace body, the purge N ₂ gas from the front chamber, and the off-gas generated in the solidification chamber are all led to the off-gas system through the duct at the top of the airtight melting furnace body. Each device and the off-gas treatment device are interlocked, and during normal operation, each device can process waste only while the off-gas treatment device is operating.

The processing flow of the off-gas treatment device is shown below.

(a) Dilution and mixing of off-gas (gas mixing chamber) Temperature reduction of off-gas, dilution of non-flammable gas (b) Rough removal of dust (dust collector) (c) Removal of fine dust and removal of harmful gases (high-performance filter unit) ) HEPA filter protection
…(Press filter) Removal of fine dust…(HEPA filter) Removal of harmful gases…(Activated carbon filter) Prevention of outflow of activated carbon fine powder
...(after filter) (d) Exhaust off-gas to the outside of the building (exhaust fan) (7) Furnace cleaning Furnace cleaning is maintenance and inspection work to remove dust and splash that adheres to the inside of the airtight melting furnace. Dust is removed by _N2 gas blowing and treated with an off-gas system. The splash is removed by removing the hearth bottom and washing it mechanically. Before removing the furnace bottom, always blow out the dust with _N2 gas.

The procedure for cleaning the inside of the furnace is shown below.

(1) Removal of dust inside the furnace by _N2 gas blowing (off-gas treatment device), (2) Removal of the furnace bottom, (3) Installation of cleaning glove box, (4) Mechanical cleaning and collection of removed materials, (5) Cleaning Removal of glove box, (6)
Installation of the hearth bottom.

Next, Figure 3 shows the radioactive miscellaneous solidified waste stored in 200 drums. After checking the contents, size reduction processing is performed as necessary.
This figure shows an example of a facility for packing food into simple containers. That is, waste such as various filters, pipes, steel materials, and other radioactive materials are stored in storage container 1 (for example, 200
The raw materials are packed into drums) and brought into the processing chamber from the entrance 2 of the processing chamber by a transfer means 3 such as a roller conveyor. The lid 1a of the transported container 1 is removed by the lid removal device 4.
The lid removal device 4 has an extendable arm 5 and a suction device 6 attached to the tip of the arm 5, and the suction device 6 removes the lid 1a by suction.

The container 1 from which the lid 1a has been removed is then conveyed by the transfer means 3 to the overturning device 7. The overturning device 7 has a turntable 8, two support columns 9, 9 erected on the turntable 8, and a container holder 10 that is supported by the support columns 9, 9. The container holder 10 is the container 1
While holding the button, tilt in the direction of arrow 11a. Then, the waste 13 in the container 1 is placed on the table 1 for checking the contents.
4 is discharged on top. After the waste 13 is discharged, the holding body 10 returns in the direction of the arrow 11b. Next, the turntable 8 is rotated 90 degrees in the direction of the arrow 12a. After the rotation, the empty container 1 is transferred to a transfer means 15 such as a roller conveyor and carried out from an outlet 16.

Among the waste materials 13 discharged onto the table 14, large waste materials 13a are transported by the power manipulator 17 to the cutting device 18, where they are cut and reduced in size. Note that this miniaturization means making the product large enough to be inserted into a container for processing, which will be described later.
The power manipulator 17 is movable in a horizontal plane due to the following configuration. That is,
A movable frame 20 is installed on two parallel rails 19 (one rail is not shown) so as to be movable in the direction of the arrow 21.
The manipulator 14 is indicated by the arrow 2 with respect to the moving frame 20.
It is able to move freely in two directions. The manipulator 17 also includes a main body 23, an elevating rod 24 configured to be able to rise and fall freely with respect to the main body 23, a plurality of links 25 connected to the lower end of the elevating rod 24, and a plurality of links 25 connected to the lower end of the elevating rod 24.
The grip body 26 is attached to the tip of the grip body 26.
Therefore, the gripping body 26 can grasp the waste material 13a and transport it to an arbitrary location in three-dimensional space.
The cutting device 18 includes a fixing device 27 and a plasma cutter 2.
8. Further, the plasma cutter 28 is configured to be freely movable in the direction of the arrow. The large waste 13a carried by the manipulator 17 is fixed by the fixing device 27, and the plasma vine 28
It is cut and miniaturized by The downsized waste is returned onto the table 14 by the manipulator 17. In addition, regarding waste that has a danger of exploding when heated in a sealed state, use the plasma cutter 28 mentioned above.
The holes are drilled. In the cutting device 18, any cutting mechanism may be used instead of the plasma cutter 28.

The waste that has been miniaturized or drilled as described above and the waste that was originally small are transformed into regular shapes for processing through the charging chute 31 provided at the end of the table 14 by the operation of the manipulator 17. It is charged into the container 32 which has been prepared. Container 3 for this treatment
2 is formed into a cylindrical shape as shown in the figure. Further, as its constituent material, a metal plate made of iron or the like, a plate with many holes formed therein, or a mesh body is used. Moreover, its size is determined according to the following melting furnace. Furthermore, the container 32 is transferred in advance to a lower position of the chute 31 by a transfer means 32 such as a roller conveyor.

Next, Figure 4 shows equipment for pre-processing size reduction processing in a multi-story building, a waste charging machine,
This shows the arrangement of an airtight melting furnace, etc. That is, on the first floor there is a remote control cutting machine 41, a simple filter press machine 42, a high voltage transformer 43, and a high voltage power receiving board 44.
etc. are provided. A rectifier panel 45 is provided on the second floor. Further, a waste charging machine 46 and a waste charging machine storage area 47 are provided on the third floor. Furthermore, a solidification device 48 is installed on the first floor, and an airtight melting furnace 49 is installed from the first floor to the second floor.
is provided. Further, a dust collector 50 is provided from the second floor to the third floor, and a filter unit 51 is provided on the second floor. The remote-controlled cutting machine 41 cuts a large waste 13a placed on a fixing table 53 with a plasma cutter 28, and then tilts the table 53 in the direction of the arrow with a cylinder 54 to cut the large waste 13a. The container 32 placed below can be filled with cut and downsized waste. Further, the simple filter press machine 42 punches out a filter element from the filter frame with a pusher 55, compresses and downsizes the punched filter element with a lateral pusher 56, and places the downsized product into the container 32. It is designed to be packed into.

Small waste and waste reduced in size by the cutter 41 or press 42 are packed into simple containers 32 and arranged as shown on the third floor.

Further, on the third floor, a charging machine cart 58 moves on a rail 57 laid on the floor of the third floor. The charging machine truck 58 has a chain block 59. The waste packed in the simple container 32 is
The container is charged into the airtight melting furnace 49 using a charging machine cart 58 and a simple container charging machine 60. That is, first the trolley 58
The charging machine 60 is lifted by the chain block 59, and among the many containers 32 lined up, the one in the front row is moved under the lifted charging machine 60. Then, it is gripped by a gripping mechanism provided in the charging machine 60. Thereafter, by operating the chain block 59, the charging machine 60 is lowered to melt the melting furnace 4.
9 above the front chamber 63. Next, the air inside the front chamber 63 and charging machine 60 is replaced with nitrogen gas. When the replacement is completed, the door 64 is opened, the gripping mechanism provided in the charging machine 60 is lowered, and the container 32 is lowered into the guide cylinder 65. Note that inside the guide cylinder 65, the container 32
are stacked in multiple stages. After the above charging is completed, raise the gripping mechanism in the charging machine 60,
The door 64 is closed and the chain block 59 is operated to raise the charging machine 60.

By repeating the above charging operation, the guide cylinder 65
Place multiple containers inside.

The containerized waste charged into the melting furnace 49 as described above is melted while being immersed in the molten metal 68 in the melting furnace 49 from the lower part thereof. Above molten metal 6
8 and the lowermost portion of the cascaded waste in containers are heated by a plurality of plasma torches 66 and 67 attached to the shell of the furnace 49. In this case, as the lower end portion of the waste melts, it gradually descends due to its own weight or is pushed by the waste in a container above, and the lower end of the waste is always immersed in the molten metal. Once the waste has been melted and turned into molten metal 68, the molten metal 68 is flowed out from the outlet 69 in the furnace and sent to the solidification device 4.
Leads to 8. The plasma torch 67 can be tilted in the direction of the arrow, and irradiates the outlet 69 with an arc to allow the molten metal 68 to flow out from the outlet 69. The molten metal that flows out from the outlet 69 and falls onto the rotating disk 70 in the solidification device,
It is dispersed in all directions by the centrifugal force. During this time, the molten metal becomes granular, solidifies, and falls onto the diaphragm 71, which is tilted downward. The diaphragm 71 is vibrated by a vibration motor 72, and the granules that have fallen onto the diaphragm 71 descend in the direction of the arrow and are guided to the filling device 73. Filling device 73
is equipped with an endless chain 74, and a plurality of buckets 75 are attached to the chain. The granules that have descended on the diaphragm 71 enter the bucket 75. The bucket 75 is lifted in the direction of the arrow, that is, upward, by the chain 74.
The granules in the batch 75 are placed into storage containers 76, for example 200, provided above. Container 76 is removed once a predetermined amount of particulate material has been placed therein.

During the above operation, off-gas generated in the melting furnace main body, purging nitrogen gas from the front chamber, and off-gas generated in the solidification device are led to the dust collector 50 through a duct connected to the upper part of the melting furnace main body. After the dust is collected there, the gas is further sent to a filter unit 51 for purification, and the purified gas is discharged outside the building.

The waste is charged into the airtight melting furnace 49 by a bucket type charging machine 61 instead of the simple container charging machine 60 as described above, or by a long container charging machine 61 in the case of long waste. This is done by a material charging machine 62. First, charging using the bucket type charging machine 61 is performed as follows. The charging machine truck 58 is moved along the rail 57, and the chain block 59 of the truck 58 is moved.
In place of the simple container charging machine 60, a bucket type charging machine 61 is suspended. The cart 58 on which the bucket-type charging machine 61 is suspended is moved along the rail 57, and the charging machine 61 is placed above the front chamber 63.
Place it in place in the same way as in the case of . Bucket type charging machine 6
1 is equipped with a door that can be opened and closed at its lower end, and after it is placed on the front chamber 63, it is purged with nitrogen gas and the door 64 is opened in the same way as in the previous case, and then the bucket type charging machine 61 is opened. By opening the provided door, the waste previously placed inside the charging machine 61 can be dropped into the inside of the guide tube 65. The charging of long waste items by the long item charging machine 62 is carried out as follows. That is, the cart 58 is moved along the rail 57 and evacuated. On the other hand, the charging machine 62 has long waste material suspended inside it in advance.
is lifted by a chain block 78 that moves along a rail 77 placed near the ceiling on the third floor. Next, the chain block 78 is moved and its charging machine 62 is placed above the front chamber 63. After that, the inside of the front chamber 63 and the inside of the charging machine 62 are purged with nitrogen gas, and the door 64 is opened. Later loading machine 62
By lowering the gripper, a long piece of waste is held in a hanging manner by a gripper installed inside the holder, and the waste is immersed from its lower end into the molten metal 68 of the melting furnace 49. Perform the same melting process as above.
When charging waste using the charging machines 60, 61, and 62 as described above, the charging machines that are not in use are fixedly placed in the receiving frame 79 provided in the charging machine storage area 47.

Next, FIGS. 5 and 6 are partially cutaway views of a building equipped with the various devices shown in FIG. 4. As shown in the figure, a large number of roller conveyors 81 and lifts 82 are used as means for transporting containers between the various devices.
The containers are each moved in the direction of the arrow. The building is also equipped with an operation room 83 for operating each of the devices, an inspection room 84 for inspecting the solidified product, and the like.

Next, FIG. 7 shows the internal structure of the simple container charging machine 60. Inside the cylindrical main body 86 whose upper end is sealed and whose lower end is open, a chain block 87 is provided at an upper position, and a gripping mechanism 9 is attached to a hook 88 that hangs down from the chain block 87.
8 is hanging. Therefore, the gripping mechanism 89 can be moved downward by the operation of the chain block 87. The gripping mechanism 89 includes a gripping claw 91 at the lower end of its main body 90 that is movable in the direction of the arrow. Also, a cylinder 92 is provided inside the main body 90, and the lower end of the retractable rod 93 is connected to the gripping claw 91 via a link mechanism 94, so that the retractable rod 93 of the cylinder 92 moves in the direction of the arrow. Therefore, the gripping claws 91 are adapted to move in the direction of the arrow. By moving the gripping claw 91 in the direction of the arrow, the inner flange 8 provided at the upper end of the container 32
5, and the gripping mechanism 89 can grip the container 32 in a hanging manner by engaging the gripping claw 91 with the inner flange 85.

Next, FIG. 8 shows the state in which the treatment facility for radioactive miscellaneous solid waste as described above has been constructed using a sloped site. The building 96 has a three-story structure, and an entrance 100 for radioactive miscellaneous solid waste is provided on the third floor 97. Further, the first floor 99 is provided with an outlet 101 for carrying out the solidified material.
On the third floor 97, there is a facility 102 for different types of waste.
A pre-treatment size reduction processing facility 103, the operation room 83, and an in-furnace entry facility 104 are provided. On the second floor 98, there is a melting facility 105 consisting of the melting furnace, etc., an energy supply facility 106,
Off-gas treatment facilities 107 and the like are provided. 1
On the 99th floor, there is a solidification facility 108 and a solidified material transport facility 10.
9. Furnace cleaning facility 110 is provided. If the building is configured in this way, the waste brought into the third floor from the entrance 100 can be melted and solidified as described above during the process of moving it to the second floor and then the first floor. It has an energy saving effect that can save energy for.

As described above, in this invention, since the waste is once melted and then solidified, the bulk volume of the waste can be significantly reduced.
There are effects such as making transportation and other handling easier, and reducing the space required for storage.

Moreover, in the case of the present invention, when waste is melted as described above, the waste is packed into a melting container and melted together with the container, so that the waste is not large in nature. Regarding the form and type of waste, whether it is fine or fine, high or low density, metal or non-metal. (using a melting container with a constant external shape as a unit)
This has the effect of making it easier to transport them to the melting furnace, and making it possible to standardize the charging device to the furnace. There is also the effect that the series of operations from charging to the melting furnace to melting can be done on an assembly line.

Furthermore, in the present invention, even when waste is packed into a container for melting as described above, the waste is cut into pieces before being packed. When packing into a container, the wastes each having a small size can be packed densely by the above-mentioned cutting, which has the effect of increasing the utilization rate of the melting container.

In addition, in the case of packing, since the items that have been cut as described above and which have no large variations in size are packed, the packing work can be carried out with good work efficiency.

[Brief explanation of the drawing]

The drawings show examples of the present application, and Fig. 1 is a flowchart showing the processing order, Fig. 2 is a flowchart showing the processing order and the connection of equipment for processing, and Fig. 3 is a flowchart showing the processing order and the connection of equipment for processing. Figure 4 is a perspective view showing an example of a facility for pre-treatment size reduction processing, Figure 4 is a schematic diagram showing an example of a treatment facility for radioactive miscellaneous solid waste, and Figures 5 and 6 are radioactive miscellaneous solid waste inside a building. FIG. 7 is a partially cutaway perspective view showing the situation of a waste treatment facility, FIG. 7 is a vertical cross-sectional view of a simple container charging machine, and FIG. 8 is a schematic diagram showing an example of constructing a treatment facility using sloped land. 1... Container for storage, 14... Table for checking contents,
32... Melting container, 49... Melting furnace, 48...
Solidifying device, 41...cutting machine, 42...pressing machine.

Claims (1)

[Claims] 1. Take out the radioactive miscellaneous solid waste stored in the storage container onto a table for checking the contents. Small bulky items are not cut into pieces, and large bulky items are cut into small pieces and placed separately for melting. Pack it into a regular container, and then
A method for disposing of radioactive miscellaneous solid waste, which comprises placing the shaped container for melting into a melting furnace and melting the container together, and further solidifying the molten metal into a shape that makes it easy to store.