JP7147508B2 - RADIOACTIVE WASTE TRANSPORTATION EQUIPMENT AND METHOD FOR CHARGING RADIOACTIVE WASTE FOR RADIOACTIVE WASTE TRANSPORTATION EQUIPMENT - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a radioactive waste transport device and a radioactive waste filling method for the radioactive waste transport device.

In general, radioactive waste generated at a nuclear power plant is packed in a unit pipe or the like, and then packed in a transport storage cask for transport.

The transport and storage cask has airtightness and a shielding property to block radiation including α-rays, β-rays, γ-rays, and the like.

Hydrogen is generated if water or water of crystallization is mixed in the radioactive waste during transportation of the cask for transportation and storage, but since hydrogen is flammable, it is necessary to keep its concentration below the limit value. .

Drying treatment of radioactive waste can be considered as a measure to keep the hydrogen concentration below the limit value, but it is difficult to confirm how dry the inside of the sealed cask for transportation and storage is. rice field.

Therefore, using a hydrogen recombination catalyst to reduce the concentration of hydrogen present inside the transportation and storage cask is very effective as a measure to suppress the hydrogen concentration during transportation.

By the way, it is possible to collect the generated hydrogen by extracting it outside the transport and storage cask, but if the transport and storage cask has a double structure in which the airtight container is covered with a shielding container, the airtight lid and the shielding lid A through pipe shall be provided for each. Moreover, after filling the airtight container with radioactive waste and closing the airtight lid, it is necessary to connect the through pipes when closing the shielding lid, which is not easy to implement.

For example, Japanese Patent Laid-Open No. 2002-100000 discloses a general technical level for reducing the concentration of hydrogen present inside a transport and storage cask by using the above-mentioned hydrogen recombination catalyst.

JP 2015-64306 A

However, the method disclosed in Patent Document 1 cannot be simply applied to a transportation and storage cask that is not filled with water because the interior of the transportation and storage cask is filled with water.

The reason for this is that in the case of a cask for transportation and storage that is not filled with water inside, after the interior is dried, condensation may occur during transportation and the reaction rate of hydrogen by the hydrogen recombination catalyst may decrease. be.

Therefore, in the present disclosure, in view of the conventional problems described above, a radioactive waste transport device capable of suppressing the hydrogen concentration during transport to a limit value or less and a radioactive waste filling method for the radioactive waste transport device will be described.

The present disclosure provides a cask for transportation and storage that can accommodate radioactive waste and is closed by a lid,
a hydrogen recombination catalyst provided on the inner surface side of the lid;
a heater for heating the hydrogen recombination catalyst;
a energizer disposed through the lid so as to be airtightly maintained and connected to the heater;
and a heating power supply connected to the energizer ,
In the radioactive waste transport apparatus, the transport and storage cask has a double structure and includes a shielded container and an airtight container provided inside the shielded container,
The lid includes a shielding lid that closes the shielding container and an airtight lid that closes the airtight container,
The hydrogen recombination catalyst and the heater are provided on the inner surface side of the airtight lid,
The energizer includes a first energizer that is airtightly passed through the airtight lid and connected to the heater, and a first energizer that is airtightly passed through the shield lid and connected to the first energizer. and a second energizer that
The heating power source is associated with the radioactive waste transportation device connected to the second energizer .

Further, the first energizer includes a first energizing wire connected to the heater, a first metal fitting inserted into the airtight cover so as to maintain airtightness, and an axis line to keep airtightness in the first metal fitting. a first connector slidably inserted in a direction and connected to the first conducting wire;
The second energizer includes a second metal fitting inserted into the shielding cover so as to maintain airtightness, and a metal fitting inserted through the second metal fitting so as to be airtightly slidable in the axial direction and connected to the first connector. and a second connector to which the heating power source is connected, and a second elastic member that biases the second connector in a direction to protrude toward the airtight lid.

On the other hand, the present disclosure deploys a radioactive waste transport device in a non-contaminated space defined below the radioactive waste introduction space with a shield wall separated, and a hatch sleeve is airtightly attached to the inner circumference and closed with a hatch. A radioactive waste filling method for a radioactive waste transport device for filling radioactive waste into the radioactive waste transport device by opening an opening in the shielding wall, comprising:
an attachment/detachment area moving step of moving the shielding container to an attachment/detachment area of the shielding lid in the uncontaminated space;
a shielding lid opening step of opening the shielding lid in the shielding lid attaching/detaching area;
a filling area moving step of moving the shielded container to a radioactive waste filling area in an uncontaminated space located below the opening;
A connection step of lifting up the airtight container and airtightly connecting it to the hatch sleeve;
an airtight lid opening step of opening the airtight lid integrally with the hatch;
A filling step of filling the inside of the airtight container with radioactive waste;
an airtight lid closing step of closing the airtight lid together with the hatch;
a separating step of lifting down the airtight container to separate it from the hatch sleeve;
an attachment/detachment area moving step of moving the shielding container to the shielding lid attachment/detachment area;
a shielding lid closing and energizer connecting step of closing the shielding lid and connecting a second energizer to the first energizer of the airtight lid;
and a heating power source connecting step of connecting a heating power source to the second energizer.

ADVANTAGE OF THE INVENTION According to the radioactive waste transport apparatus and the radioactive waste filling method for the radioactive waste transport apparatus of the present invention, the excellent effect of suppressing the hydrogen concentration during transport to a limit value or less can be achieved.

FIG. 2 is an exploded cross-sectional view illustrating the configuration of a dual-structure transport and storage cask of the radioactive waste transport apparatus according to an embodiment of the present disclosure; FIG. 4 is an assembled cross-sectional view illustrating the configuration of a dual-structure transport and storage cask of a radioactive waste transport device according to an embodiment of the present disclosure; FIG. 4 is a plot diagram showing the relationship between constant temperature bath temperature and hydrogen recombination reaction rate. FIG. 4 is a first operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 4 is a second operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 4 is a third operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 4 is a fourth operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 5 is a fifth operational diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 6 is a sixth operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 7 is a seventh operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 10 is an eighth operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 10 is a ninth operational diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; FIG. 10 is a tenth operation diagram illustrating a form of a radioactive waste filling method for a radioactive waste transportation device according to an embodiment of the present disclosure; 4 is a flowchart illustrating aspects of a method for filling a radioactive waste transport device with radioactive waste according to an embodiment of the present disclosure; FIG. 4 is an assembled cross-sectional view illustrating a form in which a shock absorber is attached to a dual-structure transportation and storage cask of the radioactive waste transportation device according to the embodiment of the present disclosure; 1 is an assembled cross-sectional view illustrating the configuration of a single-structure transport and storage cask of a radioactive waste transport apparatus according to an embodiment of the present disclosure; FIG.

Hereinafter, embodiments of the present invention in the present disclosure will be described with reference to the accompanying drawings.

1 and 2 illustrate configurations of radioactive waste transport devices according to embodiments of the present disclosure.

As shown in FIGS. 1 and 2, the radioactive waste transportation apparatus 100 includes a transportation and storage cask 200, a hydrogen recombination catalyst 300, a heater 400, an energizer 500, and a heating power supply 600.

The transportation and storage cask 200 can accommodate the radioactive waste 700 packed in a unit tube or the like and is closed by a lid 210 . In the example shown in FIGS. 1 and 2, the transport and storage cask 200 has a double structure and includes a shielded container 201 and an airtight container 202 provided inside the shielded container 201 . The lid body 210 includes a shield lid 211 that closes the shield container 201 and an airtight lid 212 that closes the airtight container 202 . At the bottom of the shielding container 201, a lift block 220 is provided which is driven up and down by a pusher 910 of a carriage 900 (see FIGS. 4 and 7), which will be described later. A hole 221 through which the rod 911 of the pusher 910 is inserted is formed in the bottom of the shielding container 201 .

The hydrogen recombination catalyst 300 is a platinum group catalyst such as platinum or palladium, and is supported by a bracket 213 having an L-shaped cross section attached to the inner surface of the airtight lid 212 which is the lid 210. ing.

The heater 400 is arranged on the outer peripheral side of the hydrogen recombination catalyst 300 so as to heat the hydrogen recombination catalyst 300 .

The energizer 500 is adapted to pass through the lid 210 in an airtight manner and to be connected to the heater 400 . In the example shown in FIGS. 1 and 2 , the energizer 500 includes a first energizer 510 and a second energizer 520 .

The first energizer 510 is arranged to hermetically pass through the hermetic lid 212 and is adapted to be connected to the heater 400 .

The first energizer 510 includes a first energizing wire 511 , a first metal fitting 512 , a first connector 513 , and a first elastic member 514 . The first electric wire 511 is connected to the heater 400 . The first metal fitting 512 is fitted into the airtight lid 212 so as to maintain airtightness. The first connector 513 is slidably inserted in the axial direction so as to be airtightly held in the first metal fitting 512 and is connected to the first electric wire 511 . The first elastic member 514 is a compression spring and biases the first connector 513 in the direction of protruding toward the shielding lid 211 .

The second energizer 520 is arranged to hermetically pass through the shielding lid 211 and is adapted to be connected to the first energizer 510 . The second energizer 520 includes a second metal fitting 522 , a second connector 523 , and a second elastic member 524 . The second metal fitting 522 is fitted into the shielding lid 211 so as to maintain airtightness. The second connector 523 is axially slidably inserted into the second metal fitting 522 so as to be airtight, and is connected to the first connector 513 to connect the heating power source 600 . The second elastic member 524 is a compression spring and biases the second connector 523 in the direction of protruding toward the airtight lid 212 .

The heating power supply 600 is connected to the second connector 523 of the second energizer 520 which is the energizer 500 .

A plurality of units of the hydrogen recombination catalyst 300 and the heater 400 may be provided as required.

Next, the operation of the embodiment of the radioactive waste transportation device will be described.

During transportation of the radioactive waste 700 packed in a unit pipe or the like, the inside of the airtight container 202 is filled with the radioactive waste 700 . After that, from the state shown in FIG. 1, the airtight container 202 is closed with the airtight lid 212, and the shielding container 201 is further closed with the shielding lid 211. As shown in FIG.

When the shielding container 201 is closed with the shielding lid 211, the first connector 513 biased by the first elastic member 514 and the second connector 523 biased by the second elastic member 524 are connected. When the heating power supply 600 is connected to the second connector 523, the heater 400 is energized and the hydrogen recombination catalyst 300 is heated.

Here, by the hydrogen recombination catalyst 300, H ₂ +1/2O ₂ →H ₂ O
The reaction takes place efficiently.

Incidentally, as shown in FIG. 3, when the hydrogen (H ₂ ) concentration is 2%, the hydrogen recombination reaction rate becomes 1, that is, 100% at a constant temperature bath temperature of about 30° C., and the hydrogen (H ₂ ) concentration is 1%. Under the conditions of (2), the hydrogen recombination reaction rate becomes 100% when the constant temperature bath temperature is about 45°C. Under the condition that the hydrogen (H ₂ ) concentration is 0.1%, the hydrogen recombination reaction rate only increases to 0.6, ie, 60% even if the constant temperature bath temperature is about 60°C. The control target is to suppress the hydrogen concentration to 4% or less, and there is no particular problem.

As a result, in the transportation and storage cask 200 which is not filled with water, even if the inside of the transportation and storage cask 200 which is sealed is high in humidity and dew condensation occurs during transportation, the heating by the heater 400 can regenerate the hydrogen. A decrease in the reaction rate of hydrogen by the bonded catalyst 300 is avoided.

During the transportation of the transportation and storage cask 200, instead of always heating by the heater 400, the switch (not shown) of the heating power supply 600 is turned on only when the transportation time is longer than expected. Then, heating by the heater 400 may be performed.

In this way, the hydrogen concentration during transportation can be kept below the limit value.

FIGS. 4-13 and 14 illustrate embodiments of a radioactive waste filling method for a radioactive waste transportation device according to embodiments of the present disclosure. 1 and 2 designate the same parts.

In the radioactive waste filling method of this embodiment, as shown in FIGS. 4 to 13, the radioactive waste transportation device 100 is placed in the non-contaminated space below the radioactive waste introduction space with a shielding wall 800 therebetween. be deployed. A hatch sleeve 811 is airtightly attached to the inner periphery of the shielding wall 800, and the opening 810 of the shielding wall 800 closed by the hatch 812 is opened so that the radioactive waste transportation device 100 is filled with the radioactive waste 700. It's becoming

Specific steps include, as shown in FIG. 14, an attachment/detachment area moving process, a shielding lid opening process, a filling area moving process, a connecting process, an airtight lid opening process, a filling process, and an airtight lid closing process. , a disconnecting process, a detachable area moving process, a shielding lid closing and energizer connecting process, and a heating power supply connecting process are performed.

The attachment/detachment region moving step is a step of moving the shielding container 201 to the shielding lid attachment/detachment region of the uncontaminated space (see step S10 in FIG. 14).

In the shielding lid opening step, the shielding lid 211 is opened in the shielding lid attachment/detachment area (see step S20 in FIG. 14).

The filling area moving step moves the shielding container 201 to the radioactive waste filling area in the uncontaminated space located under the opening 810 (see step S30 in FIG. 14).

In the connecting step, the airtight container 202 is lifted up and airtightly connected to the hatch sleeve 811 (see step S40 in FIG. 14).

In the airtight lid opening step, the airtight lid 212 is opened in such a manner that the airtight lid 212 is integrated with the hatch 812 (see step S50 in FIG. 14).

In the filling step, the inside of the airtight container 202 is filled with the radioactive waste 700 (see step S60 in FIG. 14).

In the airtight lid closing step, the airtight lid 212 is closed together with the hatch 812 (see step S70 in FIG. 14).

In the separating step, the airtight container 202 is lifted down and separated from the hatch sleeve 811 (see step S80 in FIG. 14).

In the attaching/detaching area moving step, the shielding container 201 is moved to the shielding lid attaching/detaching area (see step S90 in FIG. 14).

In the shielding lid closing and energizer connecting step, the shielding lid 211 is closed and the second energizer 520 is connected to the first energizer 510 of the airtight lid 212 (see step S100 in FIG. 14).

In the heating power supply connection step, the heating power supply 600 is connected to the second energizer 520 (see step S110 in FIG. 14).

Next, the operation of the embodiment of the radioactive waste filling method will be described.

First, as shown in FIG. 4, the radioactive waste transportation apparatus 100 placed on a carriage 900 is placed on a cart 900 in a non-contaminated space defined below the radioactive waste introduction space with a shielding wall 800 therebetween. A cask 200 is deployed. A rod 911 of a pusher 910 is inserted through a hole 221 drilled in the bottom of the shielding container 201 of the cask 200 for transportation and storage.

The carriage 900 moves the shielding container 201 to the shielding lid attachment/detachment area of the non-contaminated space (see the attachment/detachment area moving step of step S10 in FIG. 14).

When the shielding container 201 moves to the shielding lid attachment/detachment area, the shielding lid 211 as the lid body 210 in the shielding lid attachment/detachment area is opened by the lid opener 820 provided on the shielding wall 800 as shown in FIG. (See step S20 of FIG. 14 for opening the cover). The lid opening/closing device 820 is adapted to grip the shielding lid 211 with a grip portion 821 .

After the shielding lid 211 is opened, the carriage 900 moves the shielding container 201 to the radioactive waste loading area in the uncontaminated space located below the opening 810, as shown in FIG. See the filling area moving step in step S30).

When the shielded container 201 is moved to the radioactive waste filling area, the airtight container 202 of the transport storage cask 200 is lifted up and airtightly connected to the hatch sleeve 811 (step of FIG. 14), as shown in FIG. See the connecting step of S40). The airtight container 202 is lifted up by extending the rod 911 of the pusher 910 and raising the lift block 220 .

With the airtight container 202 airtightly connected to the hatch sleeve 811, the airtight lid 212 is opened integrally with the hatch 812, as shown in FIG. ). Here, although the drive mechanism for opening the hatch 812 is not shown, various types of drive mechanisms using fluid pressure cylinders, motors, etc. can be employed as the drive mechanism.

When the airtight lid 212 is opened integrally with the hatch 812, the radioactive waste 700 is filled from the radioactive waste introduction space into the airtight container 202 as shown in FIG. See the filling step of S60). At this time, since the airtight container 202 is kept airtightly connected to the hatch sleeve 811, the non-contaminated space is prevented from communicating with the radioactive waste introduction space and is free from contamination.

When the inside of the airtight container 202 is filled with the radioactive waste 700, the airtight lid 212 is closed together with the hatch 812 as shown in FIG. 10 (see the airtight lid closing step of step S70 in FIG. 14).

When the airtight lid 212 is closed together with the hatch 812, the airtight container 202 is lifted down and separated from the hatch sleeve 811 as shown in FIG. 11 (see the separation process of step S80 in FIG. 14). The airtight container 202 is lifted down by contracting the rod 911 of the pusher 910 and lowering the lift block 220 .

When the airtight container 202 is lifted down and separated from the hatch sleeve 811, the carriage 900 moves the shielding container 201 to the shielding lid attachment/detachment area as shown in FIG. (Refer to the transfer process).

When the shielding container 201 moves to the shielding lid attachment/detachment area, the shielding lid 211 that has been gripped by the grip part 821 of the lid opener 820 in the shielding lid attachment/detachment area is closed as shown in FIG. The second energizer 520 is connected to the first energizer 510 of the airtight lid 212 (see the step of closing the shield lid and connecting the energizer in step S100 in FIG. 14).

As shown in FIG. 13, the carriage 900 moves the shielding container 201 to a position away from the shielding lid attachment/detachment area, and at this position the heating power source 600 is connected to the second energizer 520 (see FIG. 14). (Refer to the heating power source connecting step in step S110).

According to the embodiment of the radioactive waste filling method, radioactive waste 700 is placed in a dual-structure transport and storage cask 200 having a shielded container 201 and an airtight container 202 provided inside the shielded container 201. When filling with, it is possible to suppress the hydrogen concentration during transportation to the limit value or less while preventing the diffusion of contamination from the radioactive waste introduction space to the non-contaminated space.

On the other hand, as shown in FIG. 15, a shock absorber 230 may be attached to the transportation and storage cask 200 of the radioactive waste transportation apparatus 100. As shown in FIG.

The shock absorber 230 comprises a lower damping body 231 covering the bottom of the shielding container 201 of the transportation and storage cask 200 and an upper damping body 232 covering the top of the shielding container 201 .

In this case, the heating power source 600 may be connected to the first energizer 510 of the energizer 500 through the upper buffer 232 of the shock absorber 230 .

Further, as shown in FIG. 16, the transport and storage cask 200 of the radioactive waste transport apparatus 100 has a single structure and has both airtightness and shielding properties for blocking radiation including α-rays, β-rays, γ-rays, etc. There are also those with

In the case of the single-structure transportation and storage cask 200, the hydrogen recombination catalyst 300 is provided on the inner surface side of the lid body 210, and the heater 400 is arranged on the outer circumference side so as to heat the hydrogen recombination catalyst 300. An energizer 500 is arranged to pass through the lid body 210 so as to be airtightly held, and an energizer 500 connected to the heater 400 is arranged to penetrate the lid body 210 so as to be airtightly held. A heating power supply 600 is connected.

The energizer 500 includes a energizing wire 501 , a through metal 502 , and a connector 503 . The electric wire 501 is connected to the heater 400 . The metal through-hole 502 is fitted into the lid body 210 so as to maintain airtightness. The connector 503 is inserted through the metal fitting 502 so as to be airtight, and is connected to the electric wire 501 to be connected to the heating power source 600 .

In the single-structure transport/storage cask 200 shown in FIG. 16, the hydrogen concentration during transport can be kept below the limit value, as in the double-structure transport/storage cask 200 .

1 and 2, the transport and storage cask 200 has a double structure and includes a shielded container 201 and an airtight container 202 provided inside the shielded container 201. As shown in FIG. The lid body 210 includes a shielding lid 211 that closes the shielding container 201 and an airtight lid 212 that closes the airtight container 202 . is provided. The energizer 500 includes a first energizer 510 that is airtightly passed through the airtight lid 212 and connected to the heater 400 , and a first energizer 510 that is airtightly passed through the shield lid 211 and is connected to the first heater 400 . and a second energizer 520 connected to the energizer 510 . The heating power source 600 is connected to the second energizer 520 . With this configuration, the airtightness is maintained by the airtight container 202, and the shielding property of blocking radiation including α-rays, β-rays, γ-rays, etc. is maintained by the shielding container 201. FIG. Moreover, after the airtight container 202 is filled with the radioactive waste 700 and the airtight lid 212 is closed, when the shielding lid 211 is closed to the shielding container 201, the second energizer 520 is connected to the first energizer 510. be done. As a result, when the heating power supply 600 is connected to the second energizer 520 , the heater 400 can be energized via the second energizer 520 and the first energizer 510 .

Furthermore, in the case of the embodiment shown in FIGS. 1 and 2, the first electric wire 510 is connected to the heater 400 and the first electric wire 511 is inserted into the airtight cover 212 so as to be airtight. a first through metal 512, a first connector 513 slidably inserted in the axial direction so as to be airtightly held in the first through metal 512 and connected to the first conducting wire 511, and a cover for shielding the first connector 513. and a first elastic member 514 that biases in the direction of protruding to the side of 211 . The second energizer 520 includes a second metal fitting 522 that is fitted into the shielding lid 211 so as to be airtight, and a second metal fitting 522 that is slidably inserted in the axial direction so as to be airtight. It has a second connector 523 connected to the connector 513 to which the heating power source 600 is connected, and a second elastic member 524 that biases the second connector 523 in the direction of protruding toward the airtight lid 212 . With this configuration, the first connector 513 is urged by the first elastic member 514 to protrude toward the shielding lid 211 side, and the second elastic member 524 causes the second connector 523 to protrude toward the airtight lid 212 side. direction is urged. Therefore, when the airtight container 202 is filled with the radioactive waste 700 and the airtight lid 212 is closed, the shielding lid 211 is closed to the shielding container 201, so that the second connector 523 is more stable with respect to the first connector 513. connected as As a result, when the heating power source 600 is connected to the second connector 523 , power supply to the heater 400 can be performed more smoothly via the second connector 523 , the first connector 513 and the first power line 511 .

On the other hand, in FIGS. 4 to 13 and 14, the radioactive waste transport device 100 is arranged in a non-contaminated space defined below the radioactive waste introduction space with a shielding wall 800 separated, and a hatch sleeve is provided on the inner periphery. 811 is airtightly attached and closed with a hatch 812, by opening the opening 810 of the shielding wall 800, the radioactive waste transport device 100 is filled with radioactive waste 700. Radioactive waste to the radioactive waste transport device 100 It shows the stuffing method. In this method, an attachment/detachment region moving step of moving the shielding container 201 to the shielding lid attachment/detachment region of the uncontaminated space, a shielding lid opening step of opening the shielding lid 211 in the shielding lid attachment/detachment region, and a shielding lid opening step of opening the shielding lid 211 in the shielding lid attachment/detachment region A filling area moving step of moving to the radioactive waste filling area of the uncontaminated space located under the opening 810, a connecting step of lifting the airtight container 202 and airtightly connecting it to the hatch sleeve 811, and the airtight lid. 212 integrated with the hatch 812, a filling step of filling the inside of the airtight container 202 with the radioactive waste 700, and an airtight lid closing step of closing the airtight lid 212 together with the hatch 812. a separation step of lifting down the airtight container 202 to separate it from the hatch sleeve 811; A step of closing the shielding lid and connecting a current conductor to connect the second current conductor 520 to the first current conductor 510 and a heating power connection process of connecting the heating power supply 600 to the second current conductor 520 are performed. By carrying out the radioactive waste filling method in this manner, radioactive waste 700 can be filled into a double-structure transport and storage cask 200 having a shielded container 201 and an airtight container 202 provided inside the shielded container 201. At times, it is effective in preventing the diffusion of contamination from the radioactive waste introduction space to the non-contaminated space and keeping the hydrogen concentration below the limit value during transportation.

It should be noted that the radioactive waste filling method of the present invention and the radioactive waste transportation apparatus is not limited to the above-described embodiments described in the present disclosure, and various Of course, changes can be made.

100 Radioactive Waste Transport Device 200 Transport Storage Cask 201 Shielded Container 202 Airtight Container 210 Lid 211 Shielded Lid 212 Airtight Lid 213 Bracket 220 Lift Block 221 Hole 230 Shock Absorber 231 Lower Buffer 232 Upper Buffer 300 Hydrogen Recombination Catalyst 400 heater 500 energizer 501 energizing wire 502 penetrating metal 503 connector 510 first energizer 511 first energizing wire 512 first penetrating metal 513 first connector 514 first elastic member 520 second energizer 522 second penetrating metal 523 second Connector 524 Second elastic member 600 Heating power source 700 Radioactive waste 800 Shielding wall 810 Opening 811 Hatch sleeve 812 Hatch 820 Lid opener 821 Grip part 900 Carriage 910 Pusher 911 Rod

Claims (3)

a cask for transportation and storage that can accommodate radioactive waste and is closed by a lid;
a hydrogen recombination catalyst provided on the inner surface side of the lid;
a heater for heating the hydrogen recombination catalyst;
a energizer disposed through the lid so as to be airtightly maintained and connected to the heater;
and a heating power supply connected to the energizer ,
The transport and storage cask has a double structure and includes a shielded container and an airtight container provided inside the shielded container,
The lid includes a shielding lid that closes the shielding container and an airtight lid that closes the airtight container,
The hydrogen recombination catalyst and the heater are provided on the inner surface side of the airtight lid,
The energizer includes a first energizer that is airtightly passed through the airtight lid and connected to the heater, and a first energizer that is airtightly passed through the shield lid and connected to the first energizer. and a second energizer that
The radioactive waste transportation device , wherein the heating power source is connected to the second energizer . The first energizer includes a first energizing wire connected to the heater, a first metal fitting inserted into the airtight cover so as to maintain airtightness, and an axial direction of a first connector slidably inserted and connected to the first conducting wire;
The second energizer includes a second metal fitting inserted into the shielding cover so as to maintain airtightness, and a metal fitting inserted through the second metal fitting so as to be airtightly slidable in the axial direction and connected to the first connector. 2. A radioactive waste transportation device according to claim 1 , further comprising: a second connector to which said heating power supply is connected; and a second elastic member for biasing said second connector in a direction of protruding toward said airtight lid. A radioactive waste transport device is disposed in a non-contaminated space defined below the radioactive waste introduction space with a shield wall, and a hatch sleeve is hermetically attached to the inner circumference of the shield wall closed with a hatch. 3. A radioactive waste filling method for a radioactive waste transport device according to claim 1 or 2 , wherein the radioactive waste is filled into the radioactive waste transport device by opening an opening,
an attachment/detachment area moving step of moving the shielding container to an attachment/detachment area of the shielding lid in the uncontaminated space;
a shielding lid opening step of opening the shielding lid in the shielding lid attaching/detaching area;
a filling area moving step of moving the shielded container to a radioactive waste filling area in an uncontaminated space located below the opening;
A connection step of lifting up the airtight container and airtightly connecting it to the hatch sleeve;
an airtight lid opening step of opening the airtight lid integrally with the hatch;
A filling step of filling the inside of the airtight container with radioactive waste;
an airtight lid closing step of closing the airtight lid together with the hatch;
a separating step of lifting down the airtight container to separate it from the hatch sleeve;
an attachment/detachment area moving step of moving the shielding container to the shielding lid attachment/detachment area;
a shielding lid closing and energizer connecting step of closing the shielding lid and connecting a second energizer to the first energizer of the airtight lid;
and a heating power supply connecting step of connecting a heating power supply to the second energizer.

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