JP2005331359A - System for storing radioactive substance canister - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that an acceptance building is required for storage facilities because it is necessary to transfer radioactive substance canisters after loading them into a trailer for a while when they are transferred between a reactor building and the storage facilities for storing the radioactive substance canisters in a site of a nuclear power plant, that the site is effectively unavailable as storage facilities in on-site storage facilities whose site areas are limited and that it is difficult to streamline installations because an acceptance building is required every time additional storage facilities are built. <P>SOLUTION: This invention makes it possible to eliminate the necessity of the acceptance building in the storage facilities and makes the site effectively available as a storage area by adapting the attitude of the radioactive substance canisters to that during the storage in the reactor building and conveying them directly to a place where the storage facilities are located with a full self-advancing conveyor. Even if additional storage facilities are built, moreover, the necessity of an acceptance building can be eliminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radioactive substance storage container storage system for storing spent fuel generated mainly from nuclear power plants.

  The fuel used for a certain period in the core of the nuclear power generation facility is taken out from the core and temporarily stored in a spent fuel pool or the like. The fuel for which the predetermined cooling period has ended is finally transported to a reprocessing plant, where it is reprocessed and uranium and plutonium are taken out as reusable resources for reuse.

  Currently, spent fuel generated at nuclear power plants is increasing along with power generation demand, so even if the reprocessing plant is in operation, the spent fuel generated in the country will exceed the processing capacity at the reprocessing plant, It needs to be properly managed and stored in the period until reprocessing. The required storage capacity is on the scale of 4,400 tU in 2010 and 7,100 tU in 2020.

  There are dry storage systems such as dry cask storage, vault storage, silo storage, concrete cask storage, and water pool wet storage systems as methods of management and storage inside or outside the nuclear power plant site. In view of cost and long-term stable storage, dry storage is attracting attention. Among dry storage systems, the cask storage system currently in practical use is a method of storing spent fuel in a dry cask that is a radioactive substance storage container. The facility for managing and storing the dry cask containing spent fuel is required to maintain the cooling performance of the dry cask, the direct line from the dry cask and the shielding performance of the skyshine, and sufficient to maintain these performances. Structural strength is required.

  Therefore, in the cask storage facility of Patent Document 1, a cooling air supply port and an exhaust port are provided in the lower side wall of the building for storing the cask and the overhead crane for carrying the cask, and the cooling air flow path is configured. doing.

  Further, in Patent Document 2 and Patent Document 3, a bridge-type transport crane is installed in the upper part of the building in which the cask is stored, and an air supply port for cooling the heat generated by the cask stored inside is provided on the side of the building. A cooling air flow path is configured by providing a structure in which an exhaust port is provided on the side of the building or in the center.

  The facility for storing other radioactive substance storage containers uses a facility that blows out air from the building floor of the facility storing the radioactive substance storage containers and transports the same principle as the air pallet transport system. An example of reducing incidental equipment costs is shown in Patent Document 4.

  Patent Document 5 discloses a storage container storage system in which a metal cask or a concrete cask is transported in a storage facility by a self-propelled container transport device in which a power source and an air compressor are integrated using an air pallet. .

JP-A-9-26497 JP 2000-180586 A Japanese Patent Laid-Open No. 9-1113679 JP 2001-289996 A JP 2002-148386 A

  In the conventional radioactive substance storage container storage facility disclosed in Patent Documents 1 to 4, the cask is loaded on the trailer in a state of being laid down in the reactor building and transported to the storage facility. At the storage facility, the cask is once lowered at the receiving building, raised vertically by a crane, and carried to the storage area. Furthermore, when a crane for transporting cask is installed in the building, the building becomes larger in order to store the crane for transport, and it is necessary to support the load of the overhead crane and the raised cask on the side wall of the building. In addition, due to the seismic considerations, the structure becomes complicated, making it difficult to reduce construction work.

  In addition, when a bridge type transport crane is installed at the top of the building where the cask is stored, the building can be downsized and the structure can be simplified, but when carrying the cask into the building, The shielding lid provided on the upper part of the building will be opened and inserted from the upper part, which will invade the storage part such as rain and snow, and it has a great influence on the stored cask, and it is necessary to take countermeasures. In addition, it is necessary to support the bridge-type transport crane and the lifted cask on the building ceiling or the side wall of the building, and the structure becomes complicated due to earthquake resistance considerations, so it is difficult to reduce the construction work.

  In any case where the cask is transported by an overhead crane or a bridge crane, the height of the crane rail is limited by the height required for unloading from the trailer that transported the cask. It is difficult to keep the height low.

  In addition, even in a system in which a metal cask or a concrete cask is transported in a storage facility using a container transport device in which a power source and an air compressor are integrated using an air pallet disclosed in Patent Document 5, a cask transported by a trailer is used. A reception building was required to erect upright.

  In any case, since the site area is limited in the on-site storage system when the conventional technology is applied, the storage density is reduced due to the increase in the incidental facilities.

  The objective of this invention is providing the radioactive substance storage container storage system which can reduce a receiving building and can ensure a storage area effectively in the storage system in a power plant site.

  The present invention relates to a radioactive substance storage container storage system installed on the site of a power plant, wherein the radioactive substance storage container is installed in a vertically raised state from a reactor building equipped with a posture change facility for raising the radioactive substance storage container vertically. Using a self-propelled radioactive substance storage container transport facility that can be transported, it is installed directly at a storage location in a storage facility.

  Further, the present invention provides a facility for changing the attitude of a radioactive substance storage container fixed to a gantry capable of holding the radioactive substance storage container in a vertically raised state in a radioactive substance storage container storage system installed on the site of a power plant. Using a self-propelled radioactive material storage container transport facility that can transport a radioactive material storage container fixed to a gantry upright from a reactor building equipped with It is characterized by installation.

  Further, the present invention provides a radioactive substance storage container storage system installed on the site of a power plant, wherein a radioactive substance storage container is placed in a lying state from a reactor building equipped with a posture changing facility for lying down the radioactive substance storage container. Using a self-propelled radioactive substance storage container transport facility that can be transported, it is installed directly at a storage location in a storage facility.

  In addition, the present invention provides a radioactive substance storage container storage system installed on the site of a power plant, and a facility for changing the attitude of the radioactive substance storage container fixed to a gantry that can hold the radioactive substance storage container in a lying state. Install directly in the storage location of the storage facility using a self-propelled radioactive material storage container transport facility that can transport the radioactive material storage container fixed to the gantry from the reactor building. It is characterized by this.

  In addition, the present invention is characterized in that as a posture change facility for a radioactive substance storage container, jacks are attached to the upper part and the lower part of the radioactive substance storage container, and the jacks are vertically raised and laid down by expansion and contraction of each jack.

  In addition, the present invention is characterized in that, as a facility for changing the vertical position of the radioactive substance storage container, it is raised vertically by a stand that holds the lifting device and the lower part of the radioactive substance storage container, and laid down.

  Further, the present invention is characterized in that, as a posture changing facility for the radioactive substance storage container, the apparatus is vertically raised and laid down by a stand for holding the lifting device and the lower part of the radioactive substance storage container.

  In addition, the present invention is a self-propelled radioactive substance storage container transport facility, which is a self-propelled radioactive substance storage container transport equipped with an air pallet that reduces the friction coefficient of the radioactive substance storage container and a drive device that moves the radioactive substance storage container. It is transported by equipment.

  Further, the present invention carries as a self-propelled radioactive substance storage container transport facility by a self-propelled radioactive substance storage container transport facility provided with a cart for loading the radioactive substance storage container and a drive device for moving the radioactive substance storage container. It is characterized by this.

  Further, the present invention is a self-propelled radioactive substance storage container transport facility, which is a self-propelled radioactive substance storage container transport equipped with a vertical movement device for lifting and holding the radioactive substance storage container and a driving device for moving the radioactive substance storage container. It is transported by equipment.

  In addition, the present invention includes, as a self-propelled radioactive substance storage container transport facility, a vertical movement device that lifts and holds the trunk of the radioactive substance storage container with a clamp-shaped jig, and a drive device that moves the radioactive substance storage container. It is transported by a self-propelled radioactive substance storage container transport facility.

  ADVANTAGE OF THE INVENTION According to this invention, a storage area can be effectively ensured by making a receiving building unnecessary, and the radioactive substance storage container storage system with a high storage density can be provided.

(Example 1)
This embodiment will be described with reference to FIGS. FIG. 1 shows an example of the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 1, in the radioactive substance storage container storage system of the present invention, the radioactive substance storage container 1 is radioactively disposed in an area 4 where the radioactive substance storage container provided in the reactor building 3 is lifted by a crane and loaded on a trailer. The posture changing equipment 5 for raising the storage container is installed. In this case, the place where the posture changing equipment 5 is installed may be not the existing reactor building 3 but may be provided with a dedicated facility adjacent to the reactor building and movable by an internal passage.

  The radioactive substance storage container 1 vertically raised by the posture changing facility 5 is loaded on the radioactive substance storage container transport facility 2, and is transported to the storage facility 6 through the local road 7. In the storage facility 6, it is transported to the storage position as it is and installed.

  Until now, in the conventional storage system, the movement between buildings had to be once loaded on the trailer and moved, so the storage facility had to have a receiving building.

  However, in the embodiment of the present invention, since it can be transported and installed from the reactor building 3 as it can be stored, no receiving building is required. Handling equipment such as an overhead crane for handling the radioactive substance storage container 1 that has been necessary in the past is no longer necessary.

  Similarly, the storage facility expansion part 8 constructed adjacent to the storage facility 6 does not require handling equipment such as a receiving building or an overhead crane, and is adjacent to the existing storage facility 6 like the storage facility expansion part 9. Even if it is not constructed, it can be made into a facility that does not require handling equipment such as a receiving building and an overhead crane, and the degree of freedom of construction place is expanded.

  FIG. 2 shows an attitude change facility used in the radioactive substance storage system of the present invention. This equipment includes a presser 10 that holds the lower part of the radioactive substance storage container and a lifting device 11 that moves the upper part up and down. The posture of the radioactive substance storage container is changed by holding the lower part of the radioactive substance storage container and lifting the upper part by the lifting device 11. In this case, a storage stand used for storage may be attached to the radioactive substance storage container.

  FIG. 3 shows a radioactive substance storage container transport device used in the radioactive substance storage system of the present invention. This apparatus includes an air pallet 17 that reduces the friction coefficient of the radioactive substance storage container, and a drive unit 18 that conveys the radioactive substance storage container 1. The air pallet 17 and the driving device 18 use the compressed air supplied by the compressed air supply device 19 and the power source 20 as a driving force. The load required to move the radioactive substance storage container 1 is reduced to about 1/100 or less by the air pallet 17, and the radioactive substance storage container 1 is transported from the driving device 18 to a predetermined position in the storage facility 6 and installed. In this case, the driving force of the air pallet is compressed air, but the conveying device may be an internal combustion engine or an electric motor in addition to an air motor using compressed air. In addition, the transport facility of the radioactive substance storage container 1 can be transported with or without the storage stand 16 used at the time of storage, and a flange attached to the radioactive substance storage container 1 or fixed to an anchor bolt installed in the storage facility. It is also possible to attach a jig.

  By adopting the radioactive substance storage container storage system as shown above, a storage facility that effectively uses the site that does not require a receiving building can be expected to greatly reduce costs, and storage with high storage efficiency. A facility can be realized.

(Example 2)
FIG. 4 shows an example in which the radioactive substance storage container storage system of the present invention is applied to a storage facility that stores radioactive substance storage containers in a horizontal position. In this invention, it is applicable according to the storage state of the radioactive substance storage container in a storage facility.

  As shown in FIG. 4, in the area 4 where the radioactive substance storage container 1 provided in the reactor building 3 is lifted by a crane and loaded on a trailer, the posture changing facility 5 for laying the radioactive substance storage container on its side. Is installed. In this case, the place where the posture changing facility 5 is installed may be a dedicated facility adjacent to the reactor building 3 and movable by an internal passage instead of the existing reactor building 3. The radioactive substance storage container 1 laid down by the posture changing facility 5 is loaded on the radioactive substance storage container transport facility 2, and is transported to the storage facility 6 through the campus road 7. In the storage facility 6, it is transported to the storage position as it is and installed.

  Note that the posture change equipment 5 shown in FIG. 2 can be used in either case of raising vertically from the horizontal position or lying down from the vertical position.

  Furthermore, the transport facility 2 shown in FIG. 3 can transport the radioactive substance storage container even in a horizontal state.

  Thus, by applying the radioactive substance storage container storage system of the present invention even in storage facilities with different storage systems, it is possible to provide an in-site storage facility that does not require a receiving facility and can effectively use the site.

  By adopting the radioactive substance storage container storage system as described above, a storage facility that effectively uses the site that does not require a receiving building can be expected to greatly reduce costs, and a storage facility with high storage efficiency can be expected. Can be realized.

(Example 3)
FIG. 5 is a diagram showing another structure of the posture changing equipment used in the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 5, the upper and lower parts of the radioactive substance storage container 1 are configured by jacks 12 and 13 that can move up and down independently.

  When raising from the horizontal position, the jack 13 on the upper side of the radioactive substance storage container 1 is extended and the upper part is raised. At this time, the upper jack 13 and the lower jack 12 slide so that the jack interval can be changed in accordance with the extension amount of the upper jack.

  This posture changing equipment can be applied by the reverse operation even when lying down from a vertically placed state.

Example 4
FIG. 6 is a diagram showing another structure of the posture changing equipment used in the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 6, it comprises a rotating base 14 having an arc-shaped segment gear for holding the radioactive substance storage container 1 and a driving gear 15 for transmitting a driving force to the segment gear.

  In the radioactive substance storage container 1, by rotating the drive gear 15, the rotation base rotates, and the posture can be changed from horizontal to vertical and from vertical to horizontal.

  In this case, the radioactive substance storage container can be used with a storage stand used during storage.

(Example 5)
FIG. 7 is a diagram showing another structure of the transport facility used in the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 7, the transport facility includes a carriage 22 on which the radioactive substance storage container 1 is loaded, and a driving device 18 that moves the radioactive substance storage container.

  The carriage 22 is fixed to the drive device in the horizontal direction and moves up and down in the vertical direction. After the radioactive substance storage container is loaded on the carriage 22, the carriage 22 is transported by the drive device 18 in a state of being lifted in the vertical direction. To do.

(Example 6)
FIG. 8 is a diagram showing another structure of the transport facility used in the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 8, the transport facility includes a lifting device 24 that lifts the radioactive substance storage container 1 and a driving device 18 that moves the radioactive substance storage container 1.

The lifting device 24 is fixed to the driving device, and is transported by the driving device 18 while being lifted by the crane unit 25. Note that the roll 23 is prevented by the presser 23 during conveyance. In this case, a storage stand used for storage may be attached to the radioactive substance storage container. This transport device is effective when an air pallet or a carriage cannot be inserted into the lower surface when transporting the radioactive substance storage container 1.

(Example 7)
FIG. 9 is a diagram showing another structure of the transport facility used in the radioactive substance storage container storage system of the present invention.

  As shown in FIG. 9, the transport facility includes an elevating device 27 that sandwiches and lifts the radioactive substance storage container 1 with a clamp-shaped jig 26, and a driving device 18 that moves the radioactive substance storage container 1.

  The lifting device 27 is fixed to the driving device, and only the clamp 26 moves up and down in the vertical direction. The radioactive substance storage container 1 is transported by the driving device 18 while being lifted by the lifting device 27 sandwiched and lifted by the clamp 26. In this case, a storage stand used for storage may be attached to the radioactive substance storage container. This transport device is effective when an air pallet or a carriage cannot be inserted into the lower surface when transporting the radioactive substance storage container 1.

An air pallet may be used to move the clamp up and down.
And according to the embodiment of FIG. 8 and FIG. 9 described above, the radioactive substance storage container can be lifted and moved. Therefore, for example, directly against the pedestal already installed on the floor of the storage facility, It will be possible to lift and set the radioactive material container. As a result, even when a strong base for earthquake resistance is provided on the floor of the storage facility as a countermeasure against earthquakes, etc., according to the embodiment of the present invention, the storage area is effectively secured without using the receiving building. Therefore, it is possible to realize a radioactive substance storage container storage system having a high storage density.

The figure which shows the Example of the radioactive substance storage container storage system of this invention. The figure which shows the Example of the attitude | position change installation used for the radioactive substance storage container storage system of this invention. The figure which shows the Example of the conveyance equipment used for the radioactive substance storage container storage system of this invention. The figure which shows another Example of the radioactive substance storage container storage system of this invention. The figure which shows another Example of the attitude | position change equipment used for the radioactive substance storage container storage system of this invention. The figure which shows another Example of the attitude | position change equipment used for the radioactive substance storage container storage system of this invention. The figure which shows another Example of the conveyance installation applied to the radioactive substance storage container storage system of this invention. The figure which shows another Example of the conveyance installation applied to the radioactive substance storage container storage system of this invention. The figure which shows another Example of the conveyance installation applied to the radioactive substance storage container storage system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Radioactive material storage container, 2 ... Radioactive material storage container conveyance equipment, 3 ... Reactor building, 4 ... Handling area of radioactive material storage container attached to nuclear reactor building, 5 ... Posture change equipment, 6 ... Radioactive material storage container Storage facility, 7 ... premise road, 8 ... adjacent radioactive material storage container storage facility expansion, 9 ... additional radioactive material storage container storage facility, 10, 24 ... lifting device, 11 ... presser, 12 ... lower jack, 13 ... Upper jack, 14 ... rotating base, 15 ... driving gear, 16 ... storage base, 17 ... air pallet, 18 ... driving device, 19 ... compressed air supply equipment, 20 ... power supply, 21 ... driving wheel, 22 ... truck, 23 ... Stopper, 25 ... crane, 26 ... clamp, 27 ... lifting device.

Claims (11)

  In the radioactive material storage container storage system installed on the site of the power plant, transport the radioactive material storage container in a vertically raised state from a reactor building equipped with a posture change facility for vertically raising the radioactive material storage container. A radioactive substance storage container storage system, which is installed in a storage place in a direct storage facility using a self-propelled radioactive substance storage container transport facility capable of performing the above.   Reactor equipped with a radioactive substance storage container attitude change facility fixed to a stand that can hold the radioactive substance storage container in a vertically raised state in the radioactive substance storage container storage system installed on the site of the power plant A self-propelled radioactive material storage container transport facility that can transport a radioactive material storage container fixed to a gantry from a building in a vertically raised state, and is installed at a storage location in a direct storage facility. Radioactive material storage container storage system.   In the radioactive material storage container storage system installed on the site of the power plant, it is possible to transport the radioactive material storage container in a lying state from a reactor building equipped with a posture change facility for lying down the radioactive material storage container. A radioactive substance storage container storage system, which is installed directly at a storage place in a storage facility using a self-propelled radioactive substance storage container transport equipment.   Reactor building equipped with a facility for changing the attitude of the radioactive substance storage container fixed to a stand that can hold the radioactive substance storage container in a laid down state in the radioactive substance storage container storage system installed on the site of the power plant Using a self-propelled radioactive material storage container transport facility that can transport a radioactive material storage container fixed to a gantry from the indoor side in a lying state, it is installed directly at the storage location in the storage facility. Radioactive material storage container storage system.   Claims 1, 2, 3 and 4 are characterized in that the radioactive substance storage container is changed in posture by attaching jacks to the upper part and the lower part of the radioactive substance storage container, and vertically extending by the expansion and contraction of the respective jacks. Radioactive material storage container storage system.   The radioactive substance according to claim 1, 2, 3 or 4, wherein the radioactive substance storage container vertical posture changing equipment is vertically raised by a stand holding the lifting device and the lower part of the radioactive substance storage container and laid down horizontally. Storage container storage system.   The radioactive substance storage according to claim 1, 2, 3 or 4, wherein the radioactive substance storage container is vertically raised by a stand holding the lifting device and the lower part of the radioactive substance storage container, and laid down as the posture changing equipment of the radioactive substance storage container Container storage system.   The self-propelled equipped with an air pallet for reducing the friction coefficient of the radioactive substance storage container and a drive device for moving the radioactive substance storage container as the self-propelled radioactive substance storage container transport facility according to claim 1, 2, 3, 4 A radioactive material storage container storage system, wherein the radioactive material storage container is transported by a radioactive material storage container transport facility.   5. The self-propelled radioactive material storage according to claim 1, 2, 3, 4, as a self-propelled radioactive material storage container transport facility, comprising a carriage on which the radioactive material storage container is loaded and a drive device for moving the radioactive material storage container. A radioactive substance storage container storage system which is transported by a container transportation facility.   5. The self-propelled device according to claim 1, 2, 3, 4, wherein a self-propelled radioactive substance storage container transport facility includes a vertical movement device for lifting and holding the radioactive substance storage container and a drive device for moving the radioactive substance storage container. A radioactive material storage container storage system, wherein the radioactive material storage container is transported by a radioactive material storage container transport facility. In Claims 1, 2, 3, and 4, as a self-propelled radioactive substance storage container transport facility, a vertical movement device that holds the trunk of the radioactive substance storage container up by a clamp-shaped jig, and the radioactive substance storage container A radioactive substance storage container storage system, which is transported by a self-propelled radioactive substance storage container transport facility provided with a moving drive device.

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