JP4538807B2 - Shielding method of transport stationary device and operation device of transport stationary device in radioactive waste disposal facility - Google Patents

Description

  The present invention relates to a method for shielding a transportation stationary device in a radioactive waste disposal facility and an operation device for the transportation stationary device.

  In general, when radioactive waste is buried in the ground, a buffer material made of high-density clay-based poorly permeable material in which bentonite or bentonite and aggregate are mixed is used for the impervious construction that prevents toxic substances from leaking into the groundwater. It has been broken.

  As a method for installing such a cushioning material, a block placement method is generally used. In this block placement method, the cushioning material is pressed into a block in advance at a high density in a factory or the like, transported to a predetermined position in a tunnel constructed in a disposal facility, and placed in a hollow portion. This is a construction method in which a waste of radioactive waste to be discarded is transported and placed, and another buffer material block is transported and placed on the front side. With regard to such a block installation method, for example, according to Non-Patent Document 1, by forming a high-density molded body block by pressing a clay-based soil material, it is preliminarily molded into divided blocks having dimensions and shapes. An example of installing in combination around a cylindrical waste has been reported.

Nuclear Fuel Cycle Development Organization, “Technical Reliability Overview Report on High-Level Radioactive Waste Geological Disposal in Japan,” November 26, 1999, p.IV-52

  If the block used for the cushioning material is a small block, the work that transports the small blocks that are produced in the tunnel, stacks them, and places them in place requires work time proportional to the number of small blocks. It is more efficient to use a relatively large block such as a disk-type cushioning material block or a disk-type cushioning material block having a hollow part for installing a waste body. I can say that.

  Here, such a disk-like cushioning material block and radioactive waste waste are quite heavy, and are transported and placed at predetermined positions in the tunnel using dedicated transport placement devices. At this time, the transporting and placing work of the waste is a work in the tunnel environment where the radiation dose is high, so the transporting and placing device becomes unmanned operation by remote control, and it takes time and effort to check the situation at the site. Efficient transport placement work is difficult.

  The present invention has been made in view of the above, and can safely perform manned operation of a transport stationary apparatus, and can perform a transport stationary work efficiently and reliably in a radioactive waste disposal facility. It is an object of the present invention to provide a shielding method and an operation device for a transport stationary device.

In order to solve the above-described problems and achieve the object, the shielding method for the transporting device in the radioactive waste disposal facility according to claim 1 is moved forward and backward in a tunnel constructed in the radioactive waste disposal facility. On the rear side of the transport and placement device that transports and places waste and cushioning material at a predetermined position, it has a visual recognition part that can visually recognize the front, and a gap that can move forward and backward with the inner wall of the mine tunnel. A shielding wall for radiation, which is formed in a size that is substantially closed, is connected, and the shielding wall is moved forward and backward together with the transport stationary device.

  According to a second aspect of the present invention, there is provided a shielding method for a transportation stationary apparatus in a radioactive waste disposal facility according to the above invention, wherein an auxiliary shielding wall that is movable along the inner wall of the tunnel is in contact with the inner wall of the tunnel at a position adjacent to the shielding wall. It arrange | positions and it was made to block | close the clearance gap between the said shielding wall and the said tunnel inner wall.

  According to a third aspect of the present invention, there is provided a shielding method for a transportation stationary apparatus in a radioactive waste disposal facility, wherein the auxiliary shielding wall is divided into a plurality of blocks along an inner peripheral surface of the inner wall of the tunnel, and each block is the tunnel. It is characterized by energizing so that it may touch an inner wall.

According to a fourth aspect of the present invention, there is provided a shielding method for a transport placement device in a radioactive waste disposal facility, wherein in the above-described invention, an overhang shielding wall that projects in the advancing / retreating direction of the transport placement device around the entire end and faces the inner wall of the tunnel is integrated. It is characterized by using a shielding wall included in the above.

Shielding method of conveying stationary apparatus in the radioactive waste disposal facility according to claim 5, in the above invention that was to use a shielding wall having an uneven shape to diffuse the radiation at the end the entire circumference facing the tunnel interior wall It is characterized by.

The operation device of the transport stationary device in the radioactive waste disposal facility according to claim 6 is configured to transport the radioactive waste and the buffer material to a predetermined position by moving forward and backward in a tunnel constructed in the radioactive waste disposal facility. It is a driving device for manned driving of a stationary device, and has a visual recognition part that can be visually recognized in the front, and a gap that can move forward and backward between the inner wall of the tunnel, and is formed in a size that substantially blocks the interior of the tunnel. And a radiation shielding wall connected to the rear side of the conveyance stationary device, a boarding portion provided on the rear side of the shielding wall and on which the operator rides, and the operator to operate the conveyance stationary device And an operation unit.

The operation device of the transportation stationary apparatus in the radioactive waste disposal facility according to claim 7 is the above-described invention, wherein the operator room including the riding section and having a sealed structure by a shielding member and continuously provided on the rear side of the shielding wall is provided. It is characterized by providing.

In the above invention, the operation device for the transporting stationary apparatus in the radioactive waste disposal facility according to claim 8 is disposed so as to be movable along the inner wall of the tunnel while being in contact with the inner wall of the tunnel at a position adjacent to the shielding wall. An auxiliary shielding wall for closing a gap between the shielding wall and the inner wall of the tunnel is provided.

In the above invention, the auxiliary shielding wall is divided into a plurality of blocks along the inner peripheral surface of the inner wall of the mine shaft, and each block is It is biased to contact the inner wall of the tunnel.

The operation device of the transportation stationary apparatus in the radioactive waste disposal facility according to claim 10 is the above invention, wherein the shielding wall protrudes in the advancing / retreating movement direction of the transportation stationary apparatus around the entire end and faces the inner wall of the tunnel. It has an overhanging shielding wall integrally.

The operation device of the transportation stationary apparatus in the radioactive waste disposal facility according to claim 11 is characterized in that, in the above-mentioned invention, the shielding wall has an uneven shape for irregularly reflecting radiation on the entire circumference of the end portion facing the inner wall of the tunnel. And

  According to the method for shielding a transport placement apparatus in a radioactive waste disposal facility according to the present invention, the interior of the tunnel is substantially provided with a visual recognition portion that allows the front to be visually recognized and a gap that can move forward and backward with the inner wall of the tunnel. The shielding wall for radiation that is formed in the size to be closed is connected to the rear side of the transport stationary device, and the shield wall is moved forward and backward together with the transport stationary device, so that the operator is exposed to radiation. It is safe and can be on the rear side of the shielding wall, and the transport placement device can be operated manned while watching the front view through the visual recognition part, and it is possible to perform efficient and reliable transport placement work. Play.

  According to the operation device of the transportation stationary apparatus in the radioactive waste disposal facility according to the present invention, the inside of the tunnel is substantially provided with a visual recognition part that can visually recognize the front and a gap that can move forward and backward with the inner wall of the tunnel. Boarding provided on the rear side of the shielding wall in a safe manner without exposure to radiation, since it is provided with a shielding wall for radiation that is formed in a size to be closed and connected to the rear side of the transport stationary device The operation can be carried out by manned operation by operating the operation unit while looking at the front through the visual recognition unit, and it is possible to perform an efficient and reliable transfer and placement operation. Play.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a shielding method for a transportation stationary apparatus and a driving apparatus for a transportation stationary apparatus in a radioactive waste disposal facility according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment)
First, referring to FIG. 1 to FIG. 3-2, an example of a radioactive waste embedding disposal method in a radioactive waste disposal facility to which a transport stationary device shielding method and a transport stationary device operating device of the present invention is applied. An outline will be described. FIG. 1 is a structural diagram showing a cushioning material construction method by buffer material block conveyance stationary, FIG. 2-1 is a plan view showing a disk type cushioning material block, and FIG. 2-2 is a longitudinal end face thereof. Fig. 3-1 is a plan view showing a disk type cushioning material block with a hollow portion, and Fig. 3-2 is a longitudinal end view thereof.

  In FIG. 1, 1 is a tunnel lining formed in a horizontal direction at a position of about 300 m underground, for example, in a radioactive waste disposal facility to form a tunnel. The tunnel lining 1 is, for example, a circular structure having a concrete structure, and is constructed in, for example, a rock mass. At a predetermined position in such a tunnel lining 1, the radioactive waste 2 to be discarded is transported and placed together with a buffer material 3 surrounding the surrounding area, and then buried by refilling the tunnel lining 1. To be disposed of. The buffer material 3 is used for a water-impervious construction that prevents toxic substances from leaking into the groundwater when the radioactive waste 2 is buried in the ground, and is a high-density clay-based material containing bentonite or bentonite and aggregate. Made of a water permeable material. Here, in this embodiment, the buffer material 3 is constructed by combining the disk-shaped buffer material block 4 obtained by dividing the buffer material 3 into several pieces in the longitudinal direction and the disk-shaped buffer material block 5 with the hollow portion at the burial site, The radioactive waste 2 is transported and placed in the storage space 7 formed by the hollow part 6 of the disk-like cushioning material block 5 with the hollow part.

Here, as shown in FIGS. 2A and 2B , the disk-type cushioning material block 4 is made of a metal cylindrical mold 11 and filled in the cylindrical mold 11, pressed, rolled, etc. The bentonite-based material 12 is integrated with the cylindrical mold 11 after being densified by the compression process. Here, as shown in FIG. 1, the disk-type cushioning material block 4 is for shielding the longitudinal direction of the radioactive waste 2 and has a diameter of about 0.8 m and a length of about 1.7 m, for example. When the cylindrical radioactive waste 2 is assumed, the disk-type cushioning material block 4 is formed as a relatively large block having a diameter of about 2 m and a height (thickness) of about 0.6 m. In addition, the bentonite-based material 12 is a powder or granular material whose moisture has been adjusted.

  Further, as shown in FIG. 1, the hollow disk-shaped cushioning material block 5 is used in combination with the disk-shaped cushioning material block 4 for water shielding of the radioactive waste 2 and is made of metal and concentrically. Two inner and outer cylindrical molds 13 and 11 having the same height and different radii are filled between these inner and outer cylindrical molds 13 and 11 and densified by a compression process such as pressing and rolling. It is composed of bentonite-based material 12 integrated with the inner and outer cylindrical molds 13, 11, and is formed of a cylindrical mold 13 on the inner peripheral side and has a size that allows insertion of the radioactive waste 2. It has the part 6 in the center.

  Here, the disk-shaped cushioning material block 5 with the hollow portion is for shielding water around the circumferential direction of the radioactive waste 2 by overlapping several, for example, three pieces, and has a diameter of about 0.8 m, for example. Assuming a cylindrical radioactive waste 2 having a length of about 1.7 m, the disk-type cushioning material block 5 has a diameter of about 2 m, a diameter of the hollow portion 6 of about 0.8 m, and a height (thickness) of about 0. It is formed as a relatively large block of about 6m. In addition, the bentonite-based material 12 is a powder or granular material whose moisture has been adjusted. That is, the disk-shaped cushioning material block 5 with the hollow portion has the same outer diameter as the disk-shaped cushioning material block 4 and is formed into a donut-shaped structure having the hollow portion 6 by adding the cylindrical mold 13 at the center. Has been.

  It should be noted that both ends of the cylindrical molds 11 and 13 can be removably engaged in the central axis direction in order to ensure the engagement between the adjacent cylindrical molds 11 and the cylindrical molds 13. It has a concavo-convex shape with concave and convex portions 11a and 13a and convex portions 11b and 13b forming male and female.

  Since the bentonite-based material 12 is a low-strength material, there is a drawback that the corners and the like are easily damaged during the transfer and placement work when the block size is increased, but the metal cylindrical form 11 is integrated. Therefore, there is no damage at the time of carrying out the transportation and placement work. Even when the radioactive waste 2 which is a heavy material is placed in the storage space 7, the hollow portion 6 is formed by the metal cylindrical mold 13 and is not damaged.

  Next, a method for placing the radioactive waste 2 in the tunnel lining 1 will be described with reference to FIGS. FIG. 4 is a side view showing an end view of the state of transporting radioactive waste 2 in the tunnel lining 1 and FIG. 5 is a front view. Two guide rails 21 are laid in the tunnel lining 1 formed slightly larger than the disk-type cushioning material blocks 4 and 5 so as to be positioned on the bottom side. A transport placement device 30 is provided for moving the radioactive waste 2 to a predetermined position by moving forward and backward in the tunnel lining 1 along these guide rails 21. The transport stationary device 30 includes a transport device main body 31 that is firmly formed including a frame and the like for mounting heavy radioactive waste 2, and a lower portion of the transport device main body 31. A self-propelled moving mechanism 33 including a wheel 32 that travels on the guide rail 21 by an instruction operation and the radioactive waste 2 mounted on the transport device main body 31 in the storage space 7 at a predetermined position by an instruction operation from the operation unit. And a piston-type push-and-place mechanism 34 that pushes and places them in place. In addition, the mounting part of the radioactive waste 2 is provided with a pair of left and right roller conveyors 35 for facilitating the movement of the radioactive waste 2 during extrusion.

  In the present embodiment, an operation device 40 for manned operation of such a transport stationary device 30 is connected. This driving device 40 is formed of tempered glass or the like and has a visual recognition part 41 that can visually recognize the front, and a gap 42 that can move forward and backward between the tunnel inner wall 1a of the tunnel lining 1 and a tunnel lining. 1 is mainly composed of a disk-shaped shielding wall 43 for radiation, which is formed to have a size that substantially closes the inside, that is, approximately the same size as the disk-type cushioning material blocks 4 and 5. The shielding wall 43 is formed to a predetermined thickness with a predetermined material such as lead having a shielding function for radiation, and is connected to the rear portion of the transport stationary device 30, so that the transport stationary device 30 is integrated with the forward and backward movement. It moves forward and backward in the tunnel lining 1. On the rear side of the shielding wall 43, a boarding part 45 for the operator 44 to board is fixed, and the transport stationary apparatus 30 is operated, that is, the self-propelled moving mechanism 33 and the push-out stationary mechanism 34 are operated. The operation unit 46 is provided.

  Here, the boarding part 45 is formed as a part of the operator room 47 that is sealed between the back surface of the shielding wall 43 by a shielding member, and the operation part 46 is also disposed in the operator room 47.

  Further, an auxiliary shielding wall 48 for radiation is provided in the vicinity of the end position adjacent to the rear side (or the front side) of the shielding wall 43. The auxiliary shielding wall 48 is provided so as to be movable along the mine inner wall 1a while being in contact with the mine inner wall 1a, and closes the gap 42 between the shielding wall 43 and the mine inner wall 1a. As shown in FIG. 6, it is divided into several blocks 48a along the inner peripheral surface of the mine inner wall 1a, and each block 48a that can be displaced in the radial direction is urged so as to contact the mine inner wall 1a. . For this reason, as shown in an enlarged view in FIG. 7, the holding portion 43a attached in the vicinity of the end portion of the shielding wall 43 has the block 48a directed radially outward for each block 48a. A biasing member such as a compression spring 49 that biases is interposed. Here, a low friction process in which a thin plate (not shown) having a low friction such as Teflon (registered trademark) is sandwiched between the contact portions 48b of each block 48a of the auxiliary shielding wall 48 with the inner wall 1a of the tunnel is applied. ing. In addition, this low friction process may be addition of a roller bearing.

  In such a configuration, the transporting and placing work of the radioactive waste 2 is a work in the environment of the tunnel lining 1 having a high radiation dose. Is present in an infinite thickness, so shielding for radiation in the circumferential direction of the tunnel lining 1 is not necessary. And the shielding wall 43 which comprises the operating device 40 is connected with the rear side of the conveyance stationary apparatus 30 for conveyance stationary of the radioactive waste 2, and it can move forward / backward integrally with the conveyance stationary apparatus 30. Therefore, the operator 44 can be safely on the rear side of the shielding wall 43 without being exposed to the radiation of the radioactive waste 2 mounted on the transporting stationary device 30, that is, can get on the riding portion 45. Accordingly, the operator 44 looks through the visual recognition unit 41 at the close range while viewing the state of the transport stationary device 30, the radioactive waste 2 and the disk-shaped cushioning material blocks 11 and 13 that have already been transported and placed in front of the shielding wall 43. By maneuvering the transporting and placing device 30 by operating the radioactive waste 2, the radioactive waste 2 is transported to a predetermined position in the tunnel lining 1 or the push-out placement mechanism 34 is driven at the predetermined position to cause the radioactive waste 2. Can be placed in the storage space 7. Due to such a manned operation, it is possible to efficiently and reliably carry out the transportation and placement work of the radioactive waste 2. Alternatively, the boarding unit 45 and the operator room 47 may be omitted, and the operator 44 may be operated while the operator 44 is walking. The operation unit 46 may be a control box that can be carried by the operator 44.

  Here, only the shielding wall 43 cannot shield the radiation streaming through the gap 42 between the mine inner wall 1a, but has an auxiliary shielding wall 48 that contacts the mine inner wall 1a and closes the gap 42. As shown in FIG. 7, the radiation intended to stream through the gap 42 can be reliably shielded by the auxiliary shielding wall 48. At this time, the end portion of the auxiliary shielding wall 48 moves forward and backward as a contact portion 48b in contact with the inner wall 1a of the mine shaft. The contact portion 48b is pressed with a thin plate having a small friction to be subjected to a low friction treatment. Therefore, the auxiliary shielding wall 48 can be moved back and forth without hindrance when the transport stationary device 30 is moved.

  Since it has such a shielding structure, most of the radiation from the radiation source existing in front of the shielding wall 43 can be blocked, but since the operator chamber 47 is sealed by the shielding member, the operator 44 is provided. The radiation intensity that can be received can be greatly reduced. Since the radiation intensity reaching the operator 44 side has already been greatly reduced by the shielding wall 43 and the auxiliary shielding wall 48, the thickness of the shielding member constituting the operator chamber 47 can be made very thin.

  Next, the conveyance placement method of the disk-type buffer material blocks 4 and 5 for constructing the buffer material 3 will be described with reference to FIGS. FIG. 8 is a side view showing an end view of the disk-type cushioning material block 4 being transported in the tunnel lining 1, FIG. 9 is a front view thereof, and FIG. 10 is a disk-type buffer. FIG. 11 is a side view showing an end view of the material block 4 after being placed in the tunnel lining 1, and FIG. 11 is a front view thereof.

  For the transportation and placement of the disk-type cushioning material blocks 4 and 5, a transportation stationary device 50 having a cart structure is used. This transporting / fixing device 50 is configured to transport and place the disk-type buffer material block 4 (or the disk-type buffer material block 5 with the hollow portion), for example, in units of three, and for mounting the disk-type buffer material block 4 or 5. And a self-propelled moving mechanism 53 including a wheel 52 that travels on the bottom surface of the tunnel lining 1 while being guided by the guide rail 21.

  The operation device 40A is also connected to the rear side of the transport stationary device 50. The driving device 40A has the same structure as the driving device 40 described above. Here, when the same device is used as these operating devices 40 and 40A, they may be detachably connected to the conveying stationary devices 30 and 50, but the operating device is connected to the conveying stationary devices 30 and 50. 40 and 40A may be integrated and connected to each other as a dedicated device.

  In such a configuration, the transporting and placing work of the disk-type cushioning material blocks 4 and 5 is a work in the environment of the tunnel lining 1 where the radiation dose is high. A shield wall 43 that constitutes the operating device 40A is connected to the rear side of the transport stationary device 50 and can be moved forward and backward integrally with the transport stationary device 50. It is possible to safely stay on the rear side of the shielding wall 43 without being exposed to the radiation of the radioactive waste 2 existing in the front, that is, to board the riding section 45. Therefore, the operator 44 operates the operation unit 46 by operating the operation unit 46 while watching the state in front of the shielding wall 43 through the visual recognition unit 41 at a close distance, so that a disk type as shown in FIG. The buffer material blocks 4 and 5 are transported to a predetermined position in the tunnel lining 1 or the carriage 51 is lowered at the predetermined position so that the disk type buffer material blocks 4 and 5 are placed on the guide rail 21 as shown in FIG. It can be fixed by placing it. Due to such manned operation, it is possible to carry out the transfer and placement work of the disk-type cushioning material blocks 4 and 5 efficiently and reliably.

(Modification 1)
FIG. 12 is a longitudinal side view showing a configuration example of Modification 1 of the present invention, and FIG. 13 is a longitudinal side view showing a part thereof in an enlarged manner. In the first modification, the shielding wall 43 has an overhanging shielding wall 60 that projects in the advancing / retreating movement direction of the conveying stationary devices 30 and 50 around the entire periphery of the end portion and faces the inner wall 1a of the tunnel. In the illustrated example, the projecting shielding wall 60 projects to the front side, but may project to the rear side, and may project to both sides to have a T-shaped cross section. .

  Due to the presence of the overhanging shielding wall 60, the length of the gap 42 between the end of the shielding wall 43 and the inner wall 1a of the tunnel is increased, and as shown in FIG. It becomes possible to reduce to. Thereby, it can be set as the structure which does not require the auxiliary | assistant shielding wall 48 which touches the tunnel inner wall 1a.

(Modification 2)
FIG. 14 is a longitudinal side view showing a configuration example of Modification 2 of the present invention, and FIG. 15 is an enlarged longitudinal side view showing a part thereof. In the second modification, the shielding wall 43 is formed in a concavo-convex shape having a concavo-convex portion 61 that diffusely reflects radiation around the entire periphery of the end portion facing the mine inner wall 1a. Here, an example of application to a configuration example having an overhanging shielding wall 60 is shown, and an uneven portion 61 is also formed on the outer peripheral surface of the overhanging shielding wall 60.

  Due to the presence of the concavo-convex portion 61, as shown in FIG. 15, the amount of radiation reaching the near side can be further reduced by irregularly reflecting the radiation streaming into the gap 42. Thereby, it can be set as the structure which does not require the auxiliary | assistant shielding wall 48 which touches the tunnel inner wall 1a.

It is a block diagram which shows the buffer material construction system by buffer material block conveyance stationary. It is a top view which shows the disk type | mold buffer material block in FIG. It is a vertical end view of a disk type buffer material block. It is a top view which shows the disk type | mold buffer material block with a hollow part in FIG. It is a vertical end view of a disk type buffer material block with a hollow part. It is a side view which shows the mode at the time of the conveyance stationary placement in the tunnel lining of a radioactive waste in an end view. FIG. 5 is a front view of FIG. 4. It is a front view which shows the relationship between an auxiliary shielding wall and a shielding wall. It is the vertical side view which expanded the principal part which shows the shielding effect by an auxiliary shielding wall. It is a side view which shows the mode at the time of conveyance in the tunnel lining of a disk type | mold buffer material block in an end view. It is a front view of FIG. It is a side view which shows the mode after placement in the tunnel lining of a disk type | mold buffer material block in an end view. It is a front view of FIG. It is a vertical side view which shows the structural example of the modification 1 of this invention. It is a vertical side view which expands and shows a part of FIG. It is a vertical side view which shows the structural example of the modification 2 of this invention. It is a vertical side view which expands and shows a part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tunnel lining 2 Radioactive waste 3 Cushioning material 30 Conveyance stationary apparatus 40, 40A Operation apparatus 41 Visual recognition part 42 Crevice 43 Shielding wall 44 Operator 45 Boarding part 46 Operation part 47 Operator room 48 Auxiliary shielding wall 48a Block 48b Contact part 49 Compression Spring 50 Conveying device 60 Overhang shielding wall 61 Uneven portion

Claims (11)

The rear side of the inside tunnels built radioactive waste disposal facility was moved forward and backward to transport the radioactive waste and the buffer material to a predetermined position conveying stationary device for stationary tunnel inner wall and having a visible portion visible forward A radiation shielding wall that is formed in a size that substantially closes the inside of the tunnel with a gap that can move forward and backward, and moves the shielding wall forward and backward together with the transporting device. A method for shielding a transportation stationary apparatus in a radioactive waste disposal facility, characterized in that it is configured as described above.   An auxiliary shielding wall that is movable along the inner wall of the mine shaft while being in contact with the inner wall of the mine shaft at a position adjacent to the shielding wall is disposed so as to close a gap between the shielding wall and the inner wall of the mine shaft. The shielding method of the conveyance stationary apparatus in the radioactive waste disposal facility of Claim 1.   3. The radioactive waste disposal according to claim 2, wherein the auxiliary shielding wall is divided into a plurality of blocks along an inner peripheral surface of the inner wall of the mine shaft, and each block is urged so as to contact the inner wall of the mine shaft. A method for shielding a transport stationary apparatus in a facility   2. The radioactive waste according to claim 1, wherein a shielding wall that integrally projects an overhanging shielding wall that protrudes in an advancing and retreating direction of the conveying stationary device around the entire end portion and faces the inner wall of the mine shaft is used. A method for shielding a transportation stationary device in a disposal facility.   5. The shield for a transportation stationary apparatus in a radioactive waste disposal facility according to claim 1, wherein a shielding wall having an uneven shape for irregularly reflecting radiation is used around the entire circumference of the end facing the inner wall of the tunnel. Method.   It is an operating device for manned operation of a transportation stationary device that moves forward and backward in a tunnel constructed in a radioactive waste disposal facility and transports radioactive waste and buffer material to a predetermined position and places them,
  A pair that has a visual recognition part that can visually recognize the front and has a gap that can move forward and backward between the inner wall of the mine shaft and is formed in a size that substantially closes the inside of the mine shaft and is connected to the rear side of the transporting device. A shielding wall for radiation,
  A boarding part provided on the rear side of the shielding wall and on which an operator boards;
  An operation unit for the operator to operate the transport stationary device;
  A device for operating a transporting stationary apparatus in a radioactive waste disposal facility.   The operation of the transport placement apparatus in a radioactive waste disposal facility according to claim 6, further comprising an operator room including the boarding portion and having a sealed structure by a shielding member and continuously provided on the rear side of the shielding wall. apparatus.   An auxiliary shielding wall is provided that is disposed so as to be movable along the inner wall of the mine shaft while being in contact with the inner wall of the mine shaft at a position adjacent to the shielding wall, and closes a gap between the shielding wall and the inner wall of the mine shaft. The operation apparatus of the conveyance stationary apparatus in the radioactive waste disposal facility of Claim 6 or 7.   The radioactive shielding wall according to claim 8, wherein the auxiliary shielding wall is divided into a plurality of blocks along an inner peripheral surface of the inner wall of the mine shaft, and each block is biased so as to contact the inner wall of the mine shaft. Operation device for transporting stationary equipment in waste disposal facilities.   8. The radioactive waste according to claim 6, wherein the shielding wall integrally has a projecting shielding wall that projects in the advancing and retreating movement direction of the transporting device around the entire end and faces the inner wall of the tunnel. The operation device of the transportation stationary device in the disposal facility.   The operation of the transport placement apparatus in a radioactive waste disposal facility according to claim 6, 7 or 10, wherein the shielding wall has a concavo-convex shape for irregularly reflecting radiation around the entire periphery of the end portion facing the inner wall of the tunnel. apparatus.

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