Cutting device for nuclear reactor equipment, and cutting system for nuclear reactor equipment.

Abstract

To provide a cutting device and cutting system for nuclear reactor equipment that can cut workpieces of various shapes and structures with a high degree of freedom. [Solution] The reactor equipment cutting device is for cutting a workpiece placed in a pool of reactor equipment, and comprises a wire saw that is movable in the vertical direction and in the first horizontal direction and capable of cutting the entire workpiece over the entire area in the second horizontal direction perpendicular to the first horizontal direction, and a disc saw that is movable in the vertical direction, the first horizontal direction and the second horizontal direction and capable of cutting the workpiece in part.

Description

Technical Field

[0001] The present disclosure relates to a cutting device for reactor equipment and a cutting system for reactor equipment.

Background Art

[0002] Patent Document 1 below discloses a device for cutting reactor equipment including a reactor containment vessel etc. when disassembling. In this device, cutting of an object (workpiece) is performed using only a band saw movable in the vertical direction.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, considering the uneven shape of the workpiece, the required cutting length, the degree of freedom in the cutting direction, etc., there is a problem that improvement of work efficiency is limited by only a band saw moving in the vertical direction.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to provide a cutting device for reactor equipment and a cutting system for reactor equipment that can perform cutting on workpieces of various shapes and structures with a high degree of freedom.

Means for Solving the Problems

[0006] To solve the above problems, the reactor equipment cutting device according to the present disclosure is a reactor equipment cutting device for cutting a workpiece placed in a pool of reactor equipment, and comprises a wire saw that is movable in the vertical direction and in a first horizontal direction and capable of cutting the entire workpiece over the entire area in a second horizontal direction perpendicular to the first horizontal direction, and a disc saw that is movable in the vertical direction, the first horizontal direction and the second horizontal direction and capable of partially cutting the workpiece.

[0007] The reactor equipment cutting system according to this disclosure comprises the above-mentioned reactor equipment cutting device, a pump body for pumping water stored in the pool within the pool, and a capture unit attached to the pump body that is capable of capturing metal chips contained in the water. [Effects of the Invention]

[0008] According to this disclosure, it is possible to provide a cutting device and a cutting system for nuclear reactor equipment that can cut workpieces of various shapes and structures with a high degree of freedom. [Brief explanation of the drawing]

[0009] [Figure 1] This is a plan view showing the configuration of a cutting system for reactor equipment according to the first embodiment of this disclosure. [Figure 2] This is a front view showing the configuration of a cutting system for reactor equipment according to the first embodiment of this disclosure. [Figure 3] This is an explanatory diagram showing an example of the operation of a wire saw according to the first embodiment of this disclosure. [Figure 4] This is an explanatory diagram showing an example of the operation of a wire saw according to the second embodiment of this disclosure. [Figure 5] This is a functional block diagram showing the configuration of a control device according to the third embodiment of this disclosure. [Figure 6] This is a flowchart showing the processing flow of the control device according to the third embodiment of this disclosure. [Figure 7] This is a hardware configuration diagram of a control device according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0010] <First Embodiment> (Configuration of the reactor equipment cutting system) Hereinafter, a reactor equipment cutting system 1 (hereinafter referred to as "cutting system 1") according to the first embodiment of this disclosure will be described with reference to Figures 1 to 3. This cutting system 1 is a device for cutting various components (hereinafter referred to as "workpieces 80") that are removed from a decommissioned reactor in a pool 90 of the reactor equipment. As shown in Figure 1, the pool 90 is recessed downward from a flat poolside 91. The pool 90 is formed by four side walls 92a and a bottom wall 92b that connects the lower edges of these four side walls 92a. Water is stored in this pool 90. That is, cutting by the cutting system 1 is performed underwater. As shown in Figure 1 or Figure 2, the cutting system 1 comprises a reactor equipment cutting device 10 (hereinafter referred to as "cutting device 10") and a pump 20.

[0011] (cutting device) The cutting device 10 includes a rotary table 11 (table), a drive unit 12, a travel frame 13, a disc saw 14, and a wire saw 15.

[0012] (Rotating table) The rotary table 11 is positioned on the bottom wall 92b of the pool 90. The rotary table 11 supports the workpiece 80 from below and is driven by the drive unit 12, allowing it to rotate around a rotation axis X that extends in the vertical direction d3. Viewed from the direction of the rotation axis X, the rotary table 11 forms a circle with the rotation axis X as its center. The workpiece 80 is placed on the upper surface of the rotary table 11.

[0013] (Traveling platform) The running frame 13 has a frame body 13a that forms a C shape when viewed from the front, wheels 13b, running rails 13c, and movable rails 13d. The frame body 13a has a beam 131 that extends horizontally and a pair of support legs 132 that extend downward from both ends of the beam 131. Wheels 13b are provided at the lower ends of each support leg 132. Each wheel 13b rolls on the running rail 13c that extends along the side wall 92a on the poolside 91. In other words, the frame body 13a is movable in the direction in which the running rails 13c extend. Movable rails 13d are integrally provided on the front surface of the beam 131 of the frame body 13a.

[0014] (Disc saw) The disc saw 14 includes a vertical disc saw 14a and a horizontal disc saw 14b. The vertical disc saw 14a is supported on the beam 131 so as to be movable by the moving rail 13d. The vertical disc saw 14a includes a first moving mechanism 141, a first support rod 142, and a first rotating blade 143. The first moving mechanism 141 is movable along the moving rail 13d in the horizontal direction (width direction d1 of the pool 90 when viewed from the front as shown in Figure 2: also called the second horizontal direction). The first moving mechanism 141 supports the first support rod 142 in a state that it can move in the vertical direction d3. The first rotating blade 143 is attached to the lower end of the first support rod 142. In other words, the first rotating blade 143 is supported by the first moving mechanism 141 so as to be freely movable in the width direction d1 and the vertical direction d3. Furthermore, by moving the aforementioned travel frame 13 itself in the front-rear direction d2, the first rotating blade 143 can also be moved in the front-rear direction d2.

[0015] The first rotating blade 143 itself has a saw blade provided around the entire circumference of a thin, plate-shaped disc. The first rotating blade 143 is driven to rotate around a first axis A1 extending in the front-rear direction d2 (first horizontal direction), so that when it comes into contact with the workpiece 80, it can cut the workpiece 80 and form a cut surface facing the front-rear direction d2.

[0016] The horizontal disk saw 14b is supported on the beam 131 by the above-mentioned moving rail 13d so as to be movable in the same manner as the vertical disk saw 14a. The horizontal disk saw 14b includes a second moving mechanism 144, a second support rod 145, an arm 146, and a second rotary blade 147. The second moving mechanism 144 is movable in the horizontal direction (the width direction d1 of the pool 90 when viewed from the front shown in FIG. 2, also referred to as the horizontal second direction) along the moving rail 13d. The second moving mechanism 144 supports the second support rod 145 in a state where it can move in the vertical direction d3. An arm 146 and a second rotary blade 147 are attached to the lower end of the second support rod 145. That is, the second rotary blade 147 can move freely in the width direction d1 and the vertical direction d3. Furthermore, by moving the traveling gantry 13 itself in the front-rear direction d2, the first rotary blade 143 can also move in the front-rear direction d2.

[0017] The arm 146 and the second rotary blade 147 project forward from the lower end of the second support rod 145. The second rotary blade 147 itself has a saw blade provided over the entire circumference of a thin plate-shaped disk. The arm 146 supports the second rotary blade 147 so that it can rotate about its center. When the second rotary blade 147 supported by the arm 146 is rotationally driven about the second axis A2 extending in the vertical direction d3, it can cut the workpiece 80 when it comes into contact with it and form a cut surface facing the vertical direction d3.

[0018] (Wire saw) As shown in FIG. 2, the wire saw 15 is provided in parallel with the traveling gantry 13. The wire saw 15 includes a wire saw main body 15a having a rectangular annular shape when viewed from the front, a plurality of rollers 15b that support the wire saw main body 15a so as to be rotatable in the direction of its extension, and a third moving mechanism (not shown). The wire saw main body 15a is formed by spraying and fixing fine diamond particles on an elastically deformable belt-shaped base material, and by rotating it in the direction of its extension, it performs an overall cutting similar to a thread saw on the workpiece 80.

[0019] As shown in Figure 3, the roller 15b comprises one drive roller 151, one feed roller 152, and a pair of support rollers 153. All of these rollers 15b are rotatable around an axis extending in the front-rear direction d2. Of these, the drive roller 151 is rotationally driven around its axis by an electric motor (not shown). The feed roller 152 and the support rollers 153 are provided to maintain tension in the wire saw body 15a. Specifically, the feed roller 152 is positioned at a distance d1 in the width direction from the drive roller 151. The support rollers 153 are positioned below the drive roller 151 and the feed roller 152, with a distance between them. When the drive roller 151 rotates, the wire saw body 15a, which is stretched across these rollers 15b, rotates.

[0020] The dimensions of the wire saw body 15a in the width direction d1 (second horizontal direction) are set to be greater than or equal to the dimensions of the rotary table 11 in the width direction d1 as described above. Therefore, the entire area of ​​the rotary table 11 in the width direction d1 is covered by the wire saw body 15a.

[0021] The third movement mechanism supports the wire saw body 15a and the roller 15b so that they can move in the vertical direction d3. Therefore, the wire saw 15 can move in the front-rear direction d2 as the traveling frame 13 moves, and can also move in the vertical direction d3 by the third movement mechanism. As shown in Figure 3, when the wire saw body 15a is rotated and lowered from above toward the workpiece 80 below, the wire saw body 15a elastically deforms while touching the workpiece 80 and cuts the surface of the workpiece 80, ultimately cutting the entire workpiece 80.

[0022] (pump) The pump 20 is installed in the pool 90 to circulate the water in the pool 90. As shown in Figure 1, the pump 20 has a pump body 21 and a filter 22 (capture unit). The pump body 21 pumps the water in the pool 90 in one direction. The filter 22 is attached to the discharge side of the pump body 21 and is made of a mesh or porous material that can capture foreign matter (such as metal shavings generated during cutting) contained in the discharged water while allowing it to pass through. More specifically, porous ceramics containing alumina or zirconia, activated carbon material, nonwoven fabric, diamond mesh, ion exchange resin membrane, or laminates thereof are preferably used as the filter 22.

[0023] (Effects and Benefits) Next, an example of how to operate the cutting system 1 will be described. In order to operate the cutting system 1, it is first necessary to understand the shape and configuration of the workpiece 80. Among the reactor equipment, the containment vessel has a relatively simple structure (cylindrical, hemispherical), but the lower core structure and upper core structure housed in the containment vessel have a complex structure (a structure in which many tubes are fixed to a tube holder). Therefore, in order to cut such a wide variety of reactor equipment, complex structures are cut entirely with the wire saw 15, and relatively simple structures are cut partially with the disc saw 14. "Partial cutting" here refers to, for example, cutting a cylindrical object into tile-shaped pieces, or cutting it into slices by rotation.

[0024] In conventional equipment, the workpiece 80 was typically cut using only a band saw that could move vertically. However, considering the uneven shape of the workpiece 80, the required cutting length, and the degree of freedom in the cutting direction, there was a problem in that the improvement of work efficiency was limited when using only a band saw that moved vertically. To solve this problem, the above-described configurations are adopted in this embodiment.

[0025] According to the above configuration, the cutting device 10 is equipped with a wire saw 15 and a disc saw 14. The wire saw 15 cuts the entire workpiece 80 while being movable in the vertical direction d3 and the horizontal first direction, which is the front-to-back direction d2. This makes it possible to cut the entire workpiece 80 in the vertical direction d3 at any position in the front-to-back direction d2. Furthermore, the disc saw 14 cuts the workpiece 80 in part while being movable in the vertical direction d3, the horizontal first direction (front-to-back direction d2), and the horizontal second direction, which is the width direction d1. This makes it possible to partially cut the workpiece 80 at any position in the three axial directions. Thus, according to the above configuration, it is possible to freely cut and subdivide the workpiece 80 at any position with a high degree of freedom. Therefore, it is possible to miniaturize the equipment required for loading, unloading, storing and processing the cut workpiece 80, and for example, post-processing steps in decommissioning work can be made smoother and less expensive.

[0026] According to the above configuration, the disc saw 14 has a horizontal disc saw 14b and a vertical disc saw 14a. This allows cutting surfaces to be formed on the workpiece 80 from two directions. Therefore, the shape of the workpiece 80 after cutting can be standardized to a considerable extent. For example, by operating the horizontal disc saw 14b along the two upper and lower cutting surfaces, and the vertical disc saw 14a along the two front and rear cutting surfaces, the workpiece 80 after cutting will have a shape close to a rectangular parallelepiped. As a result, the need to prepare special jigs or containers that match the shape of the workpiece 80 each time it is processed, transported, or stored after cutting is reduced. Consequently, decommissioning work can be carried out more efficiently and at a lower cost.

[0027] According to the above configuration, by rotating the rotary table 11 on which the workpiece 80 is placed around a rotation axis X extending in the vertical direction d3, the workpiece 80 can be cut at any position in the circumferential direction of the rotation axis X. Therefore, for example, a cylindrical or cylindrical workpiece 80 can be divided into smaller pieces in the circumferential direction. As a result, the dimensions of the cut workpiece 80 can be kept small, and the shape of each piece can be further standardized. Consequently, it becomes possible to achieve a high level of efficiency and smoothness in decommissioning work.

[0028] According to the above configuration, the dimensions of the wire saw 15 in the width direction d1 are set to be greater than or equal to the dimensions of the rotary table 11 in the width direction d1. Therefore, if the workpiece 80 is of a size that can be placed on the rotary table 11, it is possible to cut over the entire width direction d1. Consequently, the number of cutting operations on the workpiece 80 is reduced, further shortening the construction period and streamlining the process.

[0029] Here, a large amount of chips (scrap) are generated when the workpiece 80 is cut. Since these chips are radioactive, their collection and processing are crucial. With the above configuration, even if chips are generated, they remain in the water in the pool 90, thus suppressing their dispersion into the surrounding atmosphere. Furthermore, by sucking and pumping the water in the pool 90 with the pump body 21, the chips can be concentrated and captured by the capture unit attached to the pump body 21. Therefore, post-processing of the chips can be carried out more efficiently and stably.

[0030] With the above configuration, since the wire saw 15 extends along a plane that spreads in the vertical direction d3 and the second horizontal direction (width direction d1), it becomes possible to form a smooth cut surface on the workpiece 80 that spreads in the vertical direction d3 and the width direction d1.

[0031] The first embodiment of this disclosure has been described above. Various changes and modifications can be made to each of the above-described configurations without departing from the gist of this disclosure.

[0032] <Second Embodiment> Next, a second embodiment of the present disclosure will be described with reference to Figure 4. Components similar to those in the first embodiment described above are denoted by the same reference numerals, and detailed descriptions are omitted. In this embodiment, the mounting direction of the wire saw 115 differs from that of the first embodiment.

[0033] Specifically, the wire saw 115 is stretched across four rollers 15b in a horizontal plane, enabling it to form a horizontally extending cutting surface on the workpiece 80. More specifically, the axes of the drive roller 151, feed roller 152, and support roller 153 extend in the vertical direction d3. The wire saw 115 is also supported by the beam 131 of the travel frame 13, allowing it to move in the front-rear direction d2 and the vertical direction d3.

[0034] (Effects and Benefits) With the above configuration, since the wire saw 115 extends along a plane that spreads in the first horizontal direction (front-to-back direction d2) and the second horizontal direction (width direction d1), it is possible to form a smooth cut surface on the workpiece 80 that spreads in the front-to-back direction d2 and the width direction d1. As a result, for example, a cylindrical or columnar workpiece 80 can be divided and cut into multiple pieces in the vertical direction d3. Therefore, the uniformity of the cut workpiece 80 is ensured, and post-processing can be carried out more smoothly.

[0035] The second embodiment of this disclosure has been described above. Various changes and modifications can be made to each of the above-described configurations without departing from the gist of this disclosure.

[0036] <Third Embodiment> Next, a third embodiment of the present disclosure will be described with reference to Figures 5 and 6. Components similar to those in the embodiments described above are denoted by the same reference numerals, and detailed descriptions are omitted. The cutting system 301 according to this embodiment differs from the embodiments described above in that it further includes a position sensor 330 for detecting the positions of the wire saw 15 and the disc saw 14, and a control device 340 for controlling the operation of the wire saw 15 and the disc saw 14 based on the detection results of the position sensor 330.

[0037] (Position sensor) The position sensor 330 is an electronic circuit element that detects the position of the wire saw 15 and the disc saw 14 within their respective movement ranges, and transmits the detected position information to the control device 340.

[0038] (Control device) As shown in Figure 5, the control device 340 includes a position acquisition unit 341, a determination unit 342, a drive instruction unit 343, and a storage unit 344 as functional blocks.

[0039] The position acquisition unit 341 acquires the current positions of the wire saw 15 and the disc saw 14 from the position sensor 330. The acquired position information is stored appropriately in the storage unit 344. The determination unit 342 determines whether the wire saw 15 and the disc saw 14 have returned to their initial positions and whether the cutting operation has been completed. The drive instruction unit 343 generates drive signals to move the wire saw 15 and the disc saw 14.

[0040] Next, an example of the processing flow of the control device 340 will be described with reference to Figure 6. As shown in Figure 6, first, in step S1, the position acquisition unit 341 acquires position information of the wire saw 15 and the disc saw 14. Then, the drive instruction unit 343 generates and transmits a drive signal to return the wire saw 15 and the disc saw 14 to their initial positions. Here, "initial position" refers to the position where the wire saw 15 and the disc saw 14 do not come into contact with the workpiece 80, or the position where they are most retracted in each direction of movement. Next, in step S2, the determination unit 342 determines whether all of the wire saw 15 and the disc saw 14 have returned to their initial positions. If it is determined to be No in step S2, the process returns to step S1. If it is determined to be Yes in step S2, the drive instruction unit 343 stops the rotational movement of the wire saw 15 and the disc saw 14 in the subsequent step S3.

[0041] Furthermore, in step S4, the drive instruction unit 343 locks the wire saw 15 and disc saw 14 other than the device to be driven in the next process, temporarily rendering them inoperable. Then, in step S5, the device to be driven is operated to perform a predetermined cutting operation. This operation may be performed autonomously by the control device 340 or based on the instructions of the operator. In the subsequent step S6, the determination unit 342 determines whether or not the predetermined cutting operation has been completed. For example, this determination is made based on whether or not the planned cutting length has been cut, or based on image diagnosis by an imaging device (not shown). On the other hand, if the determination in step S6 is No, the process returns to step S5. If the determination in step S6 is Yes, the process is completed. After that, other cutting operations are performed by sequentially repeating steps S1 to S6.

[0042] (Effects and Benefits) According to the above configuration, the control device 340 returns the wire saw 15 and disc saw 14 to their initial positions and stops them. Then, it locks the wire saw 15 and disc saw 14 other than the device being driven, and subsequently, the user or the control device 340 operates the device being driven. This reduces the possibility of interference between the device being driven and the device that is not being driven. Furthermore, since only one device can be operating at a time, it becomes easier and clearer to check and inspect the work status and manage the process. Therefore, it is possible to further improve the safety and efficiency of the work.

[0043] (Other embodiments) Although embodiments of this disclosure have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and may include design changes and the like that do not depart from the gist of this disclosure.

[0044] For example, the number of wire saws 15 and disc saws 14 is not limited by the above embodiment and can be increased as appropriate depending on the size, design, and specifications of the device.

[0045] In addition to the wire saw 15 and the disc saw 14, other cutting tools such as an ultrasonic cutter may also be provided.

[0046] Furthermore, the wire saw 15 and the disc saw 14 may be rotatable so as to be tilted in the front-to-back direction d2, the up-and-down direction d3, and the width direction d1, respectively. This configuration makes it possible to further increase the degree of freedom in the cutting direction. Furthermore, although the embodiment described an example of cutting underwater, the cutting operation may also be performed in the air when there is no water stored in the pool 90.

[0047] In addition, in the embodiments of this disclosure, the control device 340 may change the order of processing, as long as appropriate processing is performed.

[0048] Each of the storage unit 344 and other storage devices in the embodiments of this disclosure may be located anywhere within the scope of appropriate information transmission and reception. Furthermore, each of the storage unit 344 and other storage devices may be present in multiple locations within the scope of appropriate information transmission and reception, and data may be stored in a distributed manner.

[0049] The processing steps performed by the control device 340 described above are stored in program format on a recording medium readable by the computer 400. The computer 400 reads and executes this program to perform the above processing. A specific example of the computer 400 is shown below.

[0050] As shown in Figure 7, the computer 400 includes a CPU 401, main memory 402, storage 403, and interface 404. For example, the control device 340 described above is implemented in the computer 400. The operation of each processing unit described above is stored in the storage 403 in the form of a program. The CPU 401 reads the program from the storage 403, loads it into the main memory 402, and executes the above processing according to the program. The CPU 401 also allocates a memory area in the main memory 402 corresponding to the storage unit 344 described above, according to the program.

[0051] Examples of storage 403 include HDDs (Hard Disk Drives), SSDs (Solid State Drives), magnetic disks, magneto-optical disks, CD-ROMs (Compact Disc Read Only Memory), DVD-ROMs (Digital Versatile Disc Read Only Memory), and semiconductor memory. Storage 403 may be an internal medium directly connected to the bus of computer 400, or an external medium connected to computer 400 via interface 404 or a communication line. Furthermore, if this program is distributed to computer 400 via a communication line, computer 400 may receive the program, expand it into main memory 402, and execute the above processing. Note that storage 403 is a tangible storage medium that is not temporary.

[0052] Furthermore, the above program may implement some of the functions described above. Moreover, the above program may be a file, a so-called differential file (differential program), that can implement the functions described above in combination with a program already recorded in computer 400.

[0053] In addition to, or in place of, the above configuration may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device), an ASIC (Application Specific Integrated Circuit), a GPU (Graphics Processing Unit), and similar processing units. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions implemented by the processor may be implemented by the integrated circuit.

[0054] <Note> The reactor equipment cutting device 10 and reactor equipment cutting system 1 described in each embodiment can be understood, for example, as follows.

[0055] (1) The reactor equipment cutting device 10 according to the first embodiment is a reactor equipment cutting device 10 for cutting a workpiece 80 placed in a pool 90 of a reactor facility, and comprises a wire saw 15 that is movable in the vertical direction d3 and in the first horizontal direction and capable of cutting the entire workpiece 80 over the entire area in the second horizontal direction perpendicular to the first horizontal direction, and a disc saw 14 that is movable in the vertical direction d3, the first horizontal direction and the second horizontal direction and capable of partially cutting the workpiece 80.

[0056] According to the above configuration, the workpiece 80 can be freely cut at any position with a high degree of freedom. Therefore, the equipment required for loading, unloading, storing, and processing the cut workpiece 80 can be miniaturized, and the post-processing steps in decommissioning work, for example, can be made smoother.

[0057] (2) The reactor equipment cutting device 10 according to the second embodiment is the reactor equipment cutting device 10 of (1), wherein the disc saw 14 has a horizontal disc saw 14b that rotates around a first axis extending in the vertical direction d3 and a vertical disc saw 14a that rotates around a second axis extending in the horizontal first direction.

[0058] According to the above configuration, the shape of the cut workpiece 80 can be standardized to a considerable extent. Therefore, the need to prepare special jigs or containers tailored to the shape of the cut workpiece 80 each time for processing, transporting, or storing it is reduced. As a result, decommissioning work can be carried out more efficiently and at a lower cost.

[0059] (3) The reactor equipment cutting device 10 according to the third embodiment is the reactor equipment cutting device 10 according to (1) or (2), further comprising a table that supports the workpiece 80 from below and is rotatable about a rotation axis X extending in the vertical direction d3, and a drive unit 12 that rotates the table about the rotation axis X.

[0060] According to the above configuration, it is possible to divide a cylindrical or cylindrical workpiece 80 into smaller pieces in the circumferential direction. Therefore, the dimensions of the workpiece 80 after cutting can be kept small, and the shape of each piece can be further standardized.

[0061] (4) The reactor equipment cutting device 10 according to the fourth embodiment is the reactor equipment cutting device 10 of (3), wherein the dimensions of the wire saw 15 in the second horizontal direction are greater than or equal to the dimensions of the table in the second horizontal direction.

[0062] With the above configuration, if the workpiece 80 is of a size that can be placed on the table, it is possible to cut it over its entire width in the width direction d1. Therefore, the number of cutting operations on the workpiece 80 is reduced, further shortening the construction period and streamlining the process.

[0063] (5) The reactor equipment cutting device 10 according to the fifth embodiment is a reactor equipment cutting device 10 according to any one embodiment of (1) to (4), further comprising a control device 340 that controls the operation of the wire saw 15 and the disc saw 14, the control device 340 returns the wire saw 15 and the disc saw 14 to their initial positions, and after stopping the wire saw 15 and the disc saw 14, locks the wire saw 15 and the disc saw 14 other than the device to be driven.

[0064] The above configuration reduces the possibility of interference between devices that are not being driven and devices that are being driven. Furthermore, because only one device can be operating at a time, checking and inspecting work status, as well as process management, becomes easier and clearer. Therefore, it is possible to further improve work safety and efficiency.

[0065] (6) The reactor equipment cutting device 10 according to the sixth embodiment is the reactor equipment cutting device 10 according to any one embodiment of (1) to (5), wherein the wire saw 15 extends along a plane that extends in the vertical direction d3 and the second horizontal direction.

[0066] With the above configuration, since the wire saw 15 extends along a plane that spreads in the vertical direction d3 and the second horizontal direction (width direction d1), it becomes possible to form a smooth cut surface on the workpiece 80 that spreads in the vertical direction d3 and the width direction d1.

[0067] (7) The reactor equipment cutting device 10 according to the seventh embodiment is the reactor equipment cutting device 10 according to any one embodiment of (1) to (5), wherein the wire saw 15 extends along the planes that extend in the first horizontal direction and the second horizontal direction.

[0068] With the above configuration, since the wire saw 15 extends along a plane that spreads in the first horizontal direction (front-to-back direction d2) and the second horizontal direction (width direction d1), it becomes possible to form a smooth cut surface on the workpiece 80 that spreads in the front-to-back direction d2 and the width direction d1.

[0069] (8) The reactor equipment cutting system 1 according to the eighth embodiment comprises a cutting device 10 according to any one embodiment of (1) to (7), a pump body 21 for pressurizing the water stored in the pool 90 within the pool 90, and a capture unit attached to the pump body 21 that is capable of capturing chips contained in the water.

[0070] With the above configuration, even if chips are generated, they remain in the water in the pool 90, thus suppressing their scattering into the surrounding atmosphere. Furthermore, by pumping the water in the pool 90 with the pump body 21, the chips can be concentrated and captured by the capture unit attached to the pump body 21. [Explanation of Symbols]

[0071] 1…Cutting system 10...Cutting device 11… Rotating table 12…Drive unit 13…Travel platform 13a...Main frame 13b...Wheel 13c... Running rail 13d...moving rail 14… Disc saw 14a... Vertical disc saw 14b... Horizontal disc saw 15…Wire saw 15a...Wire saw body 15b...Laura 20... Pump 21... Pump body 22…filter 80...Work 90... Pool 91...Poolside 92a…Side wall 92b…Bottom wall 115... Wire saw 131...beam 132...Supporting foot 141...First movement mechanism 142...First support rod 143...First Rotating Blade 144…Second movement mechanism 145...Second support rod 146... Arm 147...Second Rotating Blade 151… Drive roller 152... Feed roller 153...Support roller 301... Cutting System 330...Position sensor 340...Control device 341...Position acquisition unit 342...Judgment section 343... Drive instruction unit 344...Storage section 400... Computer 401…CPU 402... Main memory 403…Storage 404… Interface A1…first axis line A2…Second axis d1…width direction d2…Anteroposterior direction d3... Up and down direction X...axis of rotation

Claims

1. A cutting device for reactor equipment that cuts workpieces placed in a pool of reactor equipment, A wire saw that is movable in the vertical direction and in the first horizontal direction, and capable of cutting the entire workpiece over the entire area in the second horizontal direction perpendicular to the first horizontal direction, A disc saw that is movable in the vertical direction, the first horizontal direction and the second horizontal direction, and capable of partially cutting the workpiece, A cutting device for reactor equipment equipped with the following features.

2. The aforementioned disc saw is A horizontal disc saw that rotates around a first axis extending in the vertical direction, A vertical disc saw that rotates around a second axis extending in the first horizontal direction, A cutting device for reactor equipment according to claim 1, having the following features.

3. A table that supports the workpiece from below and is rotatable about a rotation axis extending in the vertical direction, A drive unit that rotates the table around the rotation axis, A cutting device for reactor equipment according to claim 1 or 2, further comprising:

4. The cutting device for reactor equipment according to claim 3, wherein the dimensions of the wire saw in the second horizontal direction are greater than or equal to the dimensions of the table in the second horizontal direction.

5. The system further comprises a control device for controlling the operation of the wire saw and the disc saw, The control device is A cutting device for reactor equipment according to claim 1 or 2, wherein the wire saw and the disc saw are returned to their initial positions, and after the wire saw and the disc saw are stopped, the other devices of the wire saw and the disc saw, excluding the device to be driven, are locked.

6. The cutting device for reactor equipment according to claim 1 or 2, wherein the wire saw extends along a plane that extends in the vertical direction and the second horizontal direction.

7. The cutting device for reactor equipment according to claim 1 or 2, wherein the wire saw extends along a plane that extends in the first horizontal direction and the second horizontal direction.

8. A cutting device for reactor equipment according to claim 1 or 2, A pump body for pumping the water stored in the pool within the pool, A collection unit is provided adjacent to the pump body and capable of capturing chips contained in the water, A cutting system for reactor equipment equipped with the following features.

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