JP2023063840A - Radioactive waste separation method and cutting/separating device - Google Patents

Abstract

To provide a radioactive waste separation method and a cutting/separating device, which allow for efficiently generating non-radioactive waste (NR) from radioactive waste.SOLUTION: A radioactive waste separation method of the present invention comprises subjecting radioactive waste with contaminated portions on surfaces thereof to: a cutting blade inserting step for preventing machined product from touching cutting blades of a milling cutter, end mill and the like contaminated by being in contact with contaminated surfaces of the radioactive waste to prevent contamination of the machined product; and a separation step for preventing the post-cutting machined product from touching scattered shavings to prevent contamination of the machined product.SELECTED DRAWING: Figure 1

Description

The present invention separates a site with contamination or a history of contamination (hereinafter simply contaminated site) from radioactive waste generated from a nuclear power plant or the like to generate non-radioactive waste (Non Radioactive Waste, hereinafter simply NR). It relates to a radioactive waste separation method and a cutting separation device.

A large amount of radioactive waste is generated during the decommissioning of aging nuclear power plants that have been in operation for many years. However, radioactive waste requires long-term management, and how to reduce the amount of radioactive waste is the key to reducing costs and work.
Conventionally, the amount of radioactive waste has been reduced by utilizing the clearance system, but since most of the radioactive waste generated at nuclear power plants is metal materials that are contaminated only on the surface, the surface contamination must be separated. It is also conceivable to reduce the amount of radioactive waste by setting it to NR.

As a method of separating the metal surface, there is a method of cutting the surface using a cutting blade, which is one of the machining methods.
When cutting with a normal milling cutter, end mill, etc., cutting chips are generated and accumulate on the workpiece. However, when cutting the surface of radioactive waste whose surface is contaminated, the generated cutting waste is radioactive waste. Here, there are techniques disclosed in Patent Documents 1 and 2 as conventional methods for removing cutting debris. In the cutting bar disclosed in Patent Document 1, a blowing fan is attached to the rotating shaft of the cutting bar so that air generated when the cutting bar rotates hits chips. In addition, the device disclosed in Patent Document 2 can remove shavings by providing a stirrer in the rotating portion of the milling cutter to contact and remove shavings remaining on the workpiece during cutting.

However, in the techniques disclosed in Patent Documents 1 and 2, since cutting waste generated during cutting is removed on the premise that it temporarily accumulates on the workpiece, the workpiece from which the contaminated portion has been removed, that is, Even if NR can be generated, the contaminated portion and the workpiece immediately come into contact with each other and the workpiece is contaminated.
In addition, the cutting edge itself of milling cutters, end mills, etc., comes into contact with the contamination, contaminating the workpiece.

Japanese Patent Application Laid-Open No. 2020-199230 Patent No. 6296006 publication

The problem to be solved by the present invention is to provide a radioactive waste separation method and a cutting separation device that separates the contaminated part from the radioactive waste and efficiently generates NR in view of the above-mentioned problems of the conventional technology. It is in.

As a first means for solving the above problems, the present invention provides radioactive waste with contaminated sites on its surface,
A step of inserting the cutting blades to prevent the contaminated cutting blades of milling cutters, end mills, etc. from contacting the contamination of the surface of radioactive waste and contamination of the workpieces,
a separation step for preventing the scattered chips from contacting the workpiece after cutting and contaminating the workpiece;
It is to provide a radioactive waste separation method characterized by having
According to the first means, by cutting the contaminated portion of the surface of the radioactive waste, NR can be efficiently generated from the radioactive waste, and the volume of the radioactive waste can be reduced.

As a second means for solving the above problems, the present invention provides a separation method in the first means,
a step of fixing the radioactive waste having a contaminated portion on the surface with the contaminated surface upright, and inserting the cutting blade from a surface adjacent to the contaminated surface;
a step of separating while blowing off the cutting waste by blowing air so that the cutting waste and the workpiece do not come into contact with each other;
It is to provide a radioactive waste separation method characterized by having
According to the second means, NR can be efficiently and reliably generated from radioactive waste, and the volume of radioactive waste can be reduced.

As a third means for solving the above problems, the present invention provides a separation method in the second means,
a separation step of moving the cutting blade from above to below so that the scattered and falling chips do not come into contact with the workpiece after cutting;
To provide a method for separating radioactive waste, characterized in that a cover is provided to prevent unexpected scattering of cutting waste from coming into contact with the workpiece after cutting.
According to the third means, it is possible to prevent contact due to unexpected random scattering of cutting chips, thereby improving the reliability of generating NR from radioactive waste.

As a fourth means for solving the above problems, the present invention provides a method in which it is assumed that contamination on the surface of radioactive waste scatters in particles prior to the separation method in the second or third means. is to provide a method for separating radioactive waste, which is characterized by having a step of decontaminating the surface of the radioactive waste.
According to the fourth means, it is possible to prevent the scattering of particulate contamination on the surface due to vibration during separation, and when it is assumed that the workpiece is contaminated by particulate radioactive materials on the surface of radioactive waste can reliably generate NR.

The present invention, as a fifth means for solving the above problems,
A fixed stand that is fixed in an upright state, which is the contaminated part of radioactive waste,
a cutting machine that moves forwards and backwards and moves up and down with respect to the fixed base, and cuts the workpiece so that the chips generated during the separation process of the radioactive waste do not come into contact with the workpiece;
To provide a device for cutting and separating radioactive waste characterized by comprising:
According to the above fifth means, NR can be efficiently generated from radioactive waste without shavings generated during separation remaining on or coming into contact with the workpiece.

As a sixth means for solving the above problems, the present invention provides, in the fifth means,
A radioactive waste characterized by comprising an air blower for blowing air from behind the cutting blade of the cutting machine to blow off the cutting chips generated during the cutting process so that the scattered cutting chips do not come into contact with the machined surface. It is to provide a cutting and separating device for
According to the sixth means, it is possible to efficiently and reliably generate NR from radioactive waste, and to reduce the volume of radioactive waste.

As a seventh means for solving the above problems, the present invention provides, in the fifth or sixth means,
a mechanism capable of working the cutting blade downward from the upper end so that the cutting chips generated during the separation process do not come into contact with the workpiece;
It is an object of the present invention to provide an apparatus for cutting and separating radioactive waste, which is characterized by providing a chip cover above, on the left and right sides of the cutting edge of the cutting machine so that the generated chip does not come into contact with the machined surface.
According to the seventh means, contact due to unexpected scattering of cutting waste can be prevented, and the reliability of generating NR from radioactive waste is improved.

As an eighth means for solving the above problems, the present invention provides, in the fifth, sixth or seventh means, wherein the fixed mount has a claw fitting to be hung on the edge of the radioactive waste in contact with the mounting surface, and the A device for cutting and separating radioactive waste, characterized by comprising a fixing jig having a mounting groove which is formed in a square shape on a mounting surface and which can fix the claw fitting at an arbitrary position on the mounting surface via a fastening means. to provide.
According to the eighth means, even if the steel plate of the radioactive waste is flat or curved, it can be fixed to the mounting surface of the fixed base.

As a ninth means for solving the above problems, the present invention provides, in the fifth, sixth, seventh or eighth means,
The fixed platform is rotatably mounted on a moving table,
The object of the present invention is to provide an apparatus for cutting and separating radioactive waste, wherein the moving table is mounted on a table mount so as to be slidable in a direction orthogonal to a vertical plane passing through the rotating shaft of the cutting machine.
According to the ninth means, the curved steel plate of the radioactive waste can be efficiently cut along the curved surface by rotating the fixed base with respect to the cutting machine. In addition, the radioactive waste can be moved in the direction perpendicular to the vertical plane passing through the rotation axis of the cutting machine, that is, in the horizontal direction, and the cutting work can be performed by one fixing operation without refixing.

According to the present invention, NR can be efficiently generated from the radioactive waste by cutting the contaminated portion on the surface of the radioactive waste, and the volume of the radioactive waste can be reduced.

1 is a plan view of a device for cutting and separating radioactive waste according to the present invention; FIG. 1 is a front view of a device for cutting and separating radioactive waste according to the present invention; FIG. 1 is a side view of a device for cutting and separating radioactive waste according to the present invention; FIG. 1 is a perspective view of a device for cutting and separating radioactive waste according to the present invention; FIG. It is explanatory drawing of a fixing jig. It is explanatory drawing of a cutting machine. It is explanatory drawing of the exhaust pipe hanging-down of an exhaust pipe dismantling area. FIG. 4 is an explanatory diagram of stacking and transporting exhaust stacks in the exhaust stack dismantling area; It is explanatory drawing of receiving and cutting of a separation area. FIG. 10 is an explanatory diagram of a separation process of a separation area;

Embodiments of the method for separating radioactive waste and the apparatus for cutting and separating radioactive waste according to the present invention will be described in detail below with reference to the drawings. The radioactive waste of the present invention is a steel plate obtained by cutting an exhaust pipe, piping equipment, etc. of a nuclear power plant. A steel plate has a contaminated portion where radioactive contaminants adhere to the surface, and may be a flat plate or a curved shape having a curvature (R) (hereinafter sometimes referred to as a curved steel plate). In the present embodiment, the radioactive waste that is cut and separated from the contaminated portion is referred to as NR (sometimes referred to as a workpiece).

[Radioactive waste cutting and separating device 10]
FIG. 1 is a plan view of the apparatus for cutting and separating radioactive waste according to the present invention (the fixed base is omitted). FIG. 2 is a front view of the apparatus for cutting and separating radioactive waste according to the present invention (the fixed base is omitted). FIG. 3 is a side view of the apparatus for cutting and separating radioactive waste of the present invention. FIG. 4 is a perspective view of the apparatus for cutting and separating radioactive waste of the present invention.
As shown in the figure, the apparatus 10 for cutting and separating radioactive waste of the present invention includes a fixed stand 20 for fixing a steel plate 12 of radioactive waste in an upright state, and a fixed stand 20 for moving back and forth and up and down with respect to the fixed stand 20 to separate the steel plate 12. The cutting machine 50 is provided for cutting out the separated contaminated site during the separation process.

(Fixed mount 20 side)
The fixed stand 20 is a stand that can be fixed in a state in which the surface of the radioactive waste steel plate 12 or the curved steel plate 13 (main surface to which the contaminated portion is attached) is perpendicular to the cutting blade.
The fixed pedestal 20 has the steel plate 12 or the curved steel plate 13 fixed to the mounting surface of the pedestal body using a fixing jig 22 and a holding jig 29 .
FIG. 5 is an explanatory diagram of a fixing jig. The fixing jig 22 has a mounting groove 24 , a claw fitting 26 and fastening means 28 .
The mounting grooves 24 are grooves that are attached to both ends of the fixed base 20 and provided in the mounting surface of the fixed base 20 in the form of squares in the vertical and horizontal directions. The cross-sectional shape of the mounting groove 24 is T-shaped so that the bolt head of the fastening means 26, which will be described later, can fit and slide.

The claw fitting 26 is a commercially available clamp, and consists of a right-angled triangular body, swivel pads provided at both ends of the body, bolt holes provided at the right-angled portions of the body, and semi-cylindrical washers. One end of the main body is placed on the mounting surface and the other end is placed on the edge of the steel plate 12, and a T-slot nut of the fastening means 28, which will be described later, is inserted into the bolt hole and fixed.
The fastening means 28 consists of a stud bolt, a flange nut, and a T-slot nut, and the T-slot nut can be fitted into the mounting groove 24 and slid in the groove to an arbitrary position. The stud bolt can be fixed in a state where one end of the claw fitting 26 is hooked on the edge of the steel plate 12 by inserting the stud bolt into the bolt hole of the claw fitting 26 and screwing the flange nut.
The holding jig 29 is provided near the center of the mounting surface, and consists of an H-shaped steel 29a and a channel steel 29b along the height direction of the steel plate 12, and is mounted so as to sandwich the steel plate 12 and the curved steel plate 13 near the center. It suppresses the vibration generated during cutting. It should be noted that, when cutting the holding portion of the pressing metal fitting 29, the pressing metal fitting is removed.

The steel plate 12 or the curved steel plate 13 can be fixed to the mounting surface of the fixed base 20 by combining a plurality of such fixing jigs 22 and holding jigs 29 .
The fixed mount 20 is provided on the moving table 30 . The moving table 30 is a rectangular frame in a plan view, and has an advancing/retreating moving part 32 and a swivel part 36 for the fixed base 20 on its upper surface.
The advancing/retracting moving portion 32 has a slider 33 provided with a turning portion 36 (to be described later), a slide rail 34 for advancing/retreating the slider 33, and a driving motor 35. As shown in FIG.

The swivel unit 36 has a fan-shaped swivel base 37 to which the fixed base 20 is attached, and a swivel shaft (rotation shaft) 38 provided in the essential part of the fan shape. The swivel base 37 can be swiveled within a predetermined angle range by a drive motor or manually.
The moving table 30 is provided on a table mount 40 . The table mount 40 comprises a slide rail 42 extending in a direction perpendicular to the rotating shaft of the cutting machine, and a drive motor 44 . The moving table 30 is mounted on slide rails 42 and can move back and forth along the rails.

(Cutting machine 50 side)
FIG. 6 is an explanatory diagram of the cutting machine.
The cutting machine 50 is a cutting machine having a drive motor 52 and a cutting blade (milling cutter or end mill) 53 on a rotating shaft. The cutting machine 50 is attached to the frame body 60 .
The cutting machine 50 has a chip cover 51 attached along the outer periphery of the cutting blade over both side surfaces and the top surface. The cutting dust cover 51 has a fan-like shape when viewed from the front, and can prevent cutting dust generated during cutting from scattering on both side surfaces and an upper surface.
A blowing unit 54 for blowing air is provided above the cutting edge of the cutting machine 50 . The air blowing unit 54 has a blower and a blowing nozzle, and blows air from behind the cutting edge during cutting to blow away generated chips so that they do not adhere to the workpiece.

The frame main body 60 is a box-shaped frame provided at a position facing the mounting surface of the fixed base 20 . The frame main body includes an elevating section 62 capable of moving the cutting machine 50 in the vertical direction, and an advance/retreat moving section 64 capable of moving the cutting machine 50 toward or away from the fixed base 20 . A driving motor and a slide rail can be used as the lifting unit 62 and the advancing/retreating moving unit 64, for example.
In the radioactive waste cutting and separating apparatus 10 having such a configuration, the cut radioactive waste steel plate 12 or curved steel plate 13 is fixed to the fixed base 20 using the fixing jig 22 and the holding jig 29 . Specifically, after leaning the steel plate 12 or the curved steel plate 13 on the mounting surface of the fixed base 20, the swivel pads of the claw fittings 26 are hooked on the left, right, top and bottom edges of the steel plate 12, and the fastening means 28 fitted in the mounting groove 24. Move the T-slot nut to an arbitrary position and fix it using the flange nut.

In the case of the curved steel plate 13, a large gap is generated between both ends and the mounting surface. The fixed base 20 is moved to the cutting start position (origin) which is the center position between the frame body 60 and the frame body 60 . The cutting machine 50 is moved to the upper end of the steel plate 12 to approach the steel plate 12 and cut from above to below. At this time, as shown in FIG. 6, the contact between the steel plate 12 or the curved steel plate 13 and the cutting blade is such that the side surface of the cutting blade contacts the contaminated portion, and the tip of the cutting blade contacts the end surface of the steel plate or curved steel plate 13 and the contaminated portion is removed. The cutting is performed from a deep uncontaminated portion (in this embodiment, this is referred to as a step of setting a cutting edge). Therefore, it is possible to prevent contamination of the NR generated by the cutting blade during cutting and maintain a state free from contamination. Chips generated during cutting are not scattered above and on both sides of the cutting blade by the chip cover 51, and basically fall down without adhering to the workpiece due to gravity. Although there is a risk that the generated cutting chips may fly toward the workpiece, the generated cutting chips can be blown away so as not to adhere to the workpiece by the air blower 54 provided behind the cutting edge. After the cutting edge reaches the lower end of the steel plate 12, the cutting machine 50 is separated from the steel plate 12 and moved upward. During this time, the moving table is moved in the lateral direction of the steel plate according to the cutting length of the cutting blade. The above operation is repeated until the contaminated portion of the steel plate 12 is removed. In the case of the curved steel plate 13, after the cutting blade reaches the lower end of the curved steel plate 13, the cutter 50 is separated from the curved steel plate 13 and moved upward. During this time, the steel plate is turned by a predetermined angle according to the cutting length of the cutting blade by the turning portion 36 of the fixed mount 20 . The above operation is repeated until the contaminated portion of the curved steel plate 13 is removed.

[Radioactive waste separation method]
A separation method using the apparatus for cutting and separating radioactive waste according to the present invention having the above configuration will be described below.
As an example, the separation method of the present embodiment is applied to the site of dismantling metallic radioactive waste (exhaust stack) that is only surface-contaminated from a nuclear power plant. The work area is divided into a dismantling area and a separate area with a space a short distance from the dismantling area. FIG. 7 is an explanatory diagram of the hanging down of the exhaust stack in the dismantling area. FIG. 8 is an explanatory diagram of exhaust stack sizing and transportation in the exhaust stack dismantling area. FIG. 9 is an explanatory diagram of the receiving and cutting of the separation area. FIG. 10 is an explanatory diagram of the separation process of the separation area.

(exhaust stack dismantling area)
The exhaust stack 1 is decontaminated. Various methods can be used for the decontamination process of this embodiment depending on the state of adherence of radioactive waste. As decontamination methods, the blast method, the water jet method, and the like are generally known. By decontaminating in advance before the separation process, it is possible to prevent contamination of the workpiece due to the scattering of particulate radioactive substances adhering to the surface during separation, and the contaminated part in the separation process described later. NR from which is removed can be reliably generated.
The decontamination can be done before or after the work of cutting the stack from above and hanging it down to the demolition area with the crane 2 (see Fig. 7).
The primary cutting is performed by cutting a plurality of suspended exhaust pipes along the axis. The primary cut radioactive waste 3 is transported to the separation area by truck 4 (see Figure 8).

(separation area)
The crane 2 receives the carefully sorted radioactive waste 3 and cuts the carefully sorted radioactive waste 3 (see Fig. 9). For cutting, for radioactive waste that has a contaminated part on the surface, the cutting blades such as milling cutters and end mills that are contaminated by touching the contamination on the surface of radioactive waste touch the workpiece, and the workpiece is contaminated. It consists of a step of inserting the cutting blade to prevent contamination, and a separation step of preventing scattered chips from contacting the workpiece after cutting and contaminating the workpiece.
Specifically, radioactive waste with contaminated parts on the surface is fixed with the contaminated surface upright, and a cutting blade is inserted from the surface adjacent to the contaminated surface. , and a step of separating while blowing off cutting chips by blowing air.
In addition, a separation process in which the cutting blade is moved from top to bottom so that the scattered and falling chips do not come into contact with the workpiece after cutting, and a separation process in which unexpected scattering of cutting chips prevents contact with the workpiece after cutting. provided with a cover.

A contaminated portion of the cut steel plate 12 is separated by the radioactive waste cutting and separation device 10 (see FIG. 10). The radioactive waste steel plate 12 or the curved steel plate 13 cut into large pieces is fixed to the fixed frame 20 using the fixing jig 22 and the holding jig 29 . The fixed base 20 is moved to the cutting start position (origin) which is the center position between the frame body 60 and the frame body 60 . The cutting machine 50 is moved to the upper end of the steel plate 12, in other words, to the cut end face, is brought close to the steel plate 12, and cuts downward from above. At this time, the contact between the steel plate 12 or the curved steel plate 13 and the cutting blade is such that the side surface of the cutting blade contacts the contaminated part, and the tip of the cutting blade contacts the cut end face of the steel plate or curved steel plate 13, and the contamination is deeper than the contaminated part. Cutting from a point without Therefore, it is possible to prevent contamination of the NR generated by the cutting blade during cutting and maintain a state free from contamination. Chips generated during cutting are not scattered above and on both sides of the cutting blade by the chip cover 51, and basically fall down without adhering to the workpiece due to gravity. Although there is a risk that the generated cutting chips may fly toward the workpiece, the generated cutting chips can be blown away so as not to adhere to the workpiece by the air blower 54 provided behind the cutting edge. After the cutting edge reaches the lower end of the steel plate 12, the cutting machine 50 is separated from the steel plate 12 and moved upward. During this time, the moving table is moved in the lateral direction of the steel plate according to the cutting length of the cutting blade. The above operation is repeated until the contaminated portion of the steel plate 12 is removed. In the case of the curved steel plate 13, after the cutting blade reaches the lower end of the curved steel plate 13, the cutter 50 is separated from the curved steel plate 13 and moved upward. During this time, the steel plate is turned by a predetermined angle according to the cutting length of the cutting blade by the turning portion 36 of the fixed mount 20 . The above operation is repeated until the contaminated portion of the curved steel plate 13 is removed.

After the separation step, the contaminated site and NR are separated and recovered.
For radioactive waste with contaminated parts on the surface, if the radiation dose is low according to a preliminary dose survey, for example, if the contaminated parts can be sufficiently removed in the separation process to generate NR, the decontamination process can be omitted. , may be cut and only the separation step may be performed. This will reduce the cost and shorten the time required for the radioactive waste separation method.
According to the present invention, the radiation dose of radioactive waste can be reduced by the decontamination process, and the radiation exposure in the subsequent cutting process and separation process can be reduced. In addition, the cutting amount in the separation process can be reduced, NR can be efficiently generated from radioactive waste, and volume reduction of radioactive waste can be realized.
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
Moreover, the present invention is not limited to the combinations shown in the embodiments, and can be implemented in various combinations.

1 Exhaust stack 2 Crane 3 Radioactive waste 4 Truck 10 Cutting and separating device 12 for radioactive waste Steel plate 13 Curved steel plate 20 Fixed base 22 Fixing jig 24 Mounting groove 26 Claw metal fitting 28 Fastening means 29 Holding metal fitting 29a H-shaped steel 29b Channel shape Steel 30 Moving table 32 Retractable moving part 33 Slider 34 Slide rail 35 Drive motor 36 Turning part 37 Turning base 38 Turning shaft 40 Table base 42 Slide rail 50 Cutting machine 51 Chip cover 52 Driving motor 54 Air blowing part 60 Frame main body 62 Elevating part 64 forward/backward movement part

Claims (9)

For radioactive waste with surface contamination,
A step of inserting the cutting blades to prevent the contaminated cutting blades of milling cutters, end mills, etc. from contacting the contamination of the surface of radioactive waste and contamination of the workpieces,
a separation step for preventing the scattered chips from contacting the workpiece after cutting and contaminating the workpiece;
A radioactive waste separation method characterized by having In the radioactive waste separation method according to claim 1,
a step of fixing the radioactive waste having a contaminated portion on the surface with the contaminated surface upright, and inserting the cutting blade from a surface adjacent to the contaminated surface;
a step of separating while blowing off the cutting waste by blowing air so that the cutting waste and the workpiece do not come into contact with each other;
A radioactive waste separation method characterized by having In the radioactive waste separation method according to claim 2,
a separation step of moving the cutting blade from above to below so that the scattered and falling chips do not come into contact with the workpiece after cutting;
A method for separating radioactive waste, comprising providing a cover to prevent contact with the workpiece after cutting due to unexpected scattering of the cutting waste. Prior to the method for separating radioactive waste according to claim 2 or claim 3, when it is assumed that the contamination of the surface of the radioactive waste will scatter in the form of particles, the contamination of the surface of the radioactive waste is removed. A radioactive waste separation method characterized by having a step of dyeing. A fixed stand that is fixed in an upright state, which is the contaminated part of radioactive waste,
a cutting machine that moves forwards and backwards and moves up and down with respect to the fixed base, and cuts the workpiece so that the chips generated during the separation process of the radioactive waste do not come into contact with the workpiece;
A device for cutting and separating radioactive waste, characterized by comprising: In the apparatus for cutting and separating radioactive waste according to claim 5,
A radioactive waste characterized by comprising an air blower for blowing air from behind the cutting blade of the cutting machine to blow off the cutting chips generated during the cutting process so that the scattered cutting chips do not come into contact with the machined surface. cutting separation equipment. In the apparatus for cutting and separating radioactive waste according to claim 5 or claim 6,
a mechanism capable of working the cutting blade downward from the upper end so that the cutting chips generated during the separation process do not come into contact with the workpiece;
An apparatus for cutting and separating radioactive wastes, characterized by comprising cutting dust covers above, on the left and right sides of the cutting blade of the cutting machine so that the generated cutting dust does not come into contact with the machined surface. In the apparatus for cutting and separating radioactive waste according to claim 5, claim 6, or claim 7,
The fixed pedestal has claw fittings for hanging on the edges of the radioactive waste that are in contact with the mounting surface, and mounting grooves that are formed in the mounting surface in the shape of squares and that allow the claw fittings to be fixed at arbitrary locations on the mounting surface via fastening means. A device for cutting and separating radioactive waste, characterized by comprising a fixing jig having In the apparatus for cutting and separating radioactive waste according to claim 5, claim 6, claim 7, or claim 8,
The fixed platform is rotatably mounted on a moving table,
An apparatus for cutting and separating radioactive waste, wherein the movable table is mounted on a table mount so as to be slidable in a direction orthogonal to a vertical plane passing through the rotating shaft of the cutting machine.

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