JP2003270389A - Tru waste containment vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a TRU waste containment vessel capable of preventing a storage vessel stored inside from jumping out and preventing the storage vessel from being damaged, even if dropped by any change during transfer. <P>SOLUTION: The TRU waste containment vessel 1 of the present invention for storing a plurality of storage vessels such as drum cans 61 or canisters 62 for storing TRU waste is equipped on the upper side with an opening part for carrying in the storage vessels therethrough, and equipped with a containment part 4 for storing inside the prescribed number of storage vessels, an upper lid 7 for blocking the opening part when the prescribed number of storage vessels are stored in the containment part 4, and a fixing means 3 for fixing the upper lid 7 on the containment part 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a T issued from a nuclear facility such as a nuclear power plant or a nuclear fuel reprocessing plant.
Storage of multiple containers such as drums and canisters containing RU (trans-uranium element) waste for a long period of time T
The present invention relates to a RU waste container.

[0002]

2. Description of the Related Art TRU (trans-uranium element) issued from nuclear facilities such as nuclear power plants and nuclear fuel reprocessing plants
Are stored in a dedicated storage container such as a drum or canister, and a plurality of these storage containers are grouped together to form a TRU.
It is planned to be stored in the waste container in a stable state for a long time (about 60 years).

FIG. 10 (a) shows a state in which a predetermined number of drums 61 are stored in this type of TRU waste container 60, and FIG. 10 (b) shows the TRU waste container 60. It is a bird's-eye view showing a state where a predetermined number of canisters 62 are stored.

As shown in FIGS. 10A and 10B, a TRU waste container 60 having a box shape.
When a predetermined number of drum cans 61 and canisters 62 are stored in the TRU waste container 6,
The inside of 0 is filled. By thus filling the mortar 63, the drum can 61 and the canister 62 stored inside are stabilized.

On the other hand, the mortar 63 has a property of not allowing moisture to pass therethrough but allowing gas to pass therethrough. TRU waste container 60
Are planned to be stored in large numbers in dedicated underground storage facilities. Groundwater may enter underground storage facilities for a long period of about 60 years.
By filling the inside of the U waste container 60 with the mortar 63, the groundwater does not enter the inside of the TRU container 60, so that the diffusion of radioactive substances by the groundwater is prevented. Further, since the decay heat is generated from the TRU waste body, the drum can 61 and the canister 62 generate heat, but since the mortar 63 can pass the gas as described above, the gas passing through the mortar 63 becomes the cooling gas. The drum can 61 and the canister 62 are cooled.

When the inside of the TRU waste container 60 is filled with the mortar 63, the opening is covered with the upper lid 64, and the mortar 65 is embedded in the gap between the upper lid 64 and the opening. Then, a hanging tool (not shown) is attached to the handling hooks 66 provided at the four corners of the upper edge portion of the TRU waste container 60, and the hanging tool is lifted by a crane or the like to obtain T
The RU waste container 60 has been transferred to a predetermined storage location.

[0007]

However, such a conventional TRU waste storage container has the following problems.

That is, the TRU waste container 60 is
It is lifted by a crane and transferred to a designated storage location. However, the upper lid 64 is not fixed by a dedicated fixing means, and T is fixed by the mortar 65 embedded in the gap between the upper lid 64 and the opening.
It is only fixed in an unstable state to the RU waste container 60.

Therefore, by any chance during the lifting and transfer,
If it falls, the top cover 64 will come off the TRU waste container 60, and the storage containers such as the drum can 61 and the canister 62 stored inside will pop out. It may be damaged.

Since the storage container such as the drum can 61 and the canister 62 is for storing the TRU waste in a safe state for a long period of time, there is a problem that the safety may be deteriorated due to damage.

The present invention has been made in view of such circumstances, and by fixing the upper lid to the TRU waste storage container itself by using a dedicated fixing means, it should be dropped during transfer. Even if there is, it is an object of the present invention to provide a TRU waste body storage container capable of preventing the storage container stored inside from popping out and thus preventing the storage container from being damaged.

[0012]

In order to achieve the above object, the present invention takes the following means.

That is, according to the invention of claim 1, in a TRU waste body storage container for storing a plurality of storage containers storing TRU waste bodies, an opening portion is provided at an upper portion, and the storage container is carried in through the opening portion, and is placed inside. The storage unit includes a storage unit that stores a predetermined number of storage containers, an upper lid that closes the opening when the storage unit stores a predetermined number of storage containers, and a fixing unit that fixes the upper lid to the storage unit.

According to a second aspect of the present invention, a TRU waste storage container for storing a plurality of storage containers storing TRU waste is provided with an opening at an upper portion thereof, and the storage container is carried in through the opening and a predetermined number of the storage containers are placed inside. The box-shaped storage unit for storing the storage container of, the upper lid that closes the opening when a predetermined number of storage containers are stored in the storage unit, one end is fixed to the bottom surface of the storage unit, the other end is The fixing rod is provided so as to extend toward the opening, and when the opening is closed by the upper lid, the other end is fixed to the upper lid to fix the upper lid.

According to a third aspect of the present invention, in a TRU waste body storage container for storing a plurality of storage containers storing TRU waste bodies, an opening is provided at an upper portion, and the storage containers are carried in through the openings and a predetermined number of the storage containers are placed inside. The box-shaped storage unit for storing the storage container of, the upper cover that closes the opening when a predetermined number of storage containers are stored in the storage unit, and the upper cover that is provided in the vicinity of the opening of the storage unit. A holding unit that holds the upper lid so as to close the unit, and a fixing unit that fixes the upper lid held by the holding unit to the storage unit are provided.

According to a fourth aspect of the present invention, in a TRU waste body storage container that stores a plurality of storage containers storing TRU waste bodies, the storage container is carried into the inside of the storage portion having the opening portion from the opening portion, When a predetermined number of storage containers are carried into the storage unit, the inside of the storage unit is filled with mortar, and then the opening is closed with an upper lid, and the upper lid is fixed to the TRU waste storage container body.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a perspective view showing an example of a storage portion of the TRU waste body storage container according to the first embodiment, and FIG. 2 is a top cover of the TRU waste body storage container according to the first embodiment. FIG. 3 is a perspective view and a vertical sectional view showing an example, and FIG. 3 is a schematic view for explaining a state in which the storage section is covered with an upper lid.

That is, as shown in FIG. 3, the TRU waste body storage container 1 according to the present embodiment has the reinforcing bar 2 embedded in the bottom surface of the TRU waste body storage container described in the prior art. Then, the lower ends of five elongated reinforcing bars 3 are fixed to the bar arrangement 2. That is, as shown in FIGS. 1 and 3, the reinforcing bar 3 has its lower end fixed to the reinforcing bar 2 so as to be substantially perpendicular to the bottom surface of the storage section 4 of the TRU waste container 1. . Further, the reinforcing bar 3 is provided with a threaded portion 5 on the upper end thereof. Such a reinforcing bar 3 is
The upper lid 7 that covers the storage unit 4 is fixed, and the material is, for example, stainless steel. A handling hook 6 for attaching a lifting tool for lifting the TRU waste storage container 1 by a crane or the like is provided at the four corners of the upper edge of the storage unit 4.

On the other hand, as shown in FIG. 2 (a), the upper lid 7 has a flat plate shape so as to be loosely fitted in the storage portion 4, and when the storage portion 4 is covered, the screw portion 5 of the reinforcing bar 3 is formed. The introduction hole 8 is bored so that it can be introduced.
As shown in FIG. 2B, the introduction hole 8 has a T-shaped cross section, and includes an upper hole 8a having a large drilling diameter and a lower hole 8b having a small drilling diameter.

Then, as shown in FIG. 3A, the upper lid 7
A plurality of drums 61 that are stored inside the storage unit 4.
Alternatively, when the space between the canisters 62 is covered with the storage portion 4 filled with the mortar 9, the screw portion 5 of the reinforcing bar 3 is guided into the upper hole 8a from the lower side of the lower hole 8b. After that, as shown in FIG. 3B, the bolt 10 is attached to the screw portion 5.
Is fitted, the bolt 10 is tightened in the upper hole 8a, and the upper lid 7 is pressed against the side of the mortar 9 filled in the storage portion 4, whereby the upper lid 7 is fixed. As the material of the bolt 10, for example, SNCM material is used.

After fixing the upper lid 7 in this way, the upper hole 8a is closed by injecting mortar 11 and the gap between the upper lid 7 and the storage section 4 is closed by injecting mortar 12. As a result, the upper lid 7 is firmly fixed to the TRU waste container 1 itself.

In the present embodiment, as an example, a TRU waste container containing five reinforcing bars 3 is shown, but the number of reinforcing bars 3 is not limited to five.
The greater the number, the greater the effect of fixing the upper lid 7. However, if the amount is too large, the drum 61 that is stored inside may be used.
Alternatively, since the storage efficiency of the canister 62 is reduced, the number of the reinforcing bars 3 is determined in consideration of the fixing strength of the upper lid 7 and the storage efficiency of the storage container.

The TRU waste container 1 according to the present embodiment has the above-described structure, so that the upper lid 7 has a T shape.
It is firmly fixed to the RU waste container 1 itself. As a result, even if the TRU waste storage container 1 may drop during lifting and transfer, the upper lid 7 cannot be removed, so that the storage containers such as the drum can 61 and the canister 62 that are stored inside the TRU waste storage container 1 cannot be removed. Breakage can be avoided.

Even if the reinforcing bar 3 is provided, the mortar 1 is placed between the upper lid 7 and the storage section 4.
2 is filled so that ground water is prevented from invading the inside of the TRU waste storage container 1 and the passage of gas is allowed and stored in the drum can 61 like the conventional TRU waste storage container. And the canister 62 can be cooled.

As a result of the above, it is possible to enhance the safety of the TRU waste during storage.

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIGS. 4 to 6.

FIG. 4 is a perspective view showing an example of a storage portion of the TRU waste body storage container according to the second embodiment, and FIG. 5 is a top cover of the TRU waste body storage container according to the second embodiment. FIG. 6 is a perspective view and an elevational sectional view showing an example, and FIG. 6 is a schematic view for explaining a state in which the storage section is covered with an upper lid.

That is, as shown in FIGS. 4 and 5, the TRU waste body storage container 14 according to the present embodiment is provided with the upper lid insertion port 15 on the upper end side of the TRU waste body storage container described in the prior art. ing. Further, guide grooves 16 are provided at both ends of the upper lid insertion opening 15 in the upper lid insertion direction F shown by an arrow in the figure.

On the other hand, as shown in FIG.
Is provided with a protrusion 18 that fits loosely in the guide groove 16. Further, as shown in FIGS. 5A and 5B, the upper lid 17 is provided with four mortar-filled portions 19 filled with mortar in holes formed through the depth direction. .

Then, as shown in FIG. 6A, the upper lid 17 is inserted from the upper lid insertion opening 15 in the upper lid insertion direction F so that the corresponding protrusions 18 are fitted in the opposing guide grooves 16. The upper lid 17 is inserted until the protruding portion 18 on the front lid insertion direction F front side fits into the guide groove 16. Thereby, as shown in FIG. 6B, the opening of the storage section 4 is closed by the upper lid 17. Further, as shown in FIG. 6C, by laying mortar 21 on the upper surface of the inserted upper lid 17, the upper surface of the TRU waste container 14 is smoothed and the upper lid 17 is fixed to the storage section 4.

The TRU waste container 14 according to this embodiment has the above-described structure, and therefore the upper lid 17 is used.
Is securely fixed to the TRU waste storage container 14 itself. As a result, the TRU waste container 14
However, even if it falls during lifting and transfer,
Since the upper lid 17 does not come off, it is possible to avoid damage to the storage containers such as the drum can 61 and the canister 62 stored inside.

In the TRU waste container 14 according to the present embodiment, the upper lid 17 is fitted in the housing portion 4. However, since the upper lid 17 is provided with the mortar filling portion 19, the first embodiment is performed. As explained in the form of
It is possible to prevent the gas from passing through and prevent the drum can 61 and the canister 62 contained therein from being cooled while preventing the invasion of the inside of the RU waste container 14.

As a result of the above, it is possible to enhance the safety of the TRU waste during storage.

(Third Embodiment) A third embodiment of the present invention will be described with reference to FIGS. 7 to 9.

FIG. 7 is a perspective view showing an example of a storage portion of the TRU waste body storage container according to the third embodiment, and FIG. 8 is a top cover of the TRU waste body storage container according to the third embodiment. FIG. 9 is a perspective view and an elevation sectional view showing an example, and FIG. 9 is a schematic view for explaining a state in which the storage section is covered with the upper lid.

That is, as shown in FIG. 7, the TRU waste body storage container 22 according to the present embodiment has embedded bolts at the four corners of the upper edge portion of the storage portion 4 of the TRU waste body storage container 60 described in the prior art. Equipped with 23.

On the other hand, the upper lid 24 is shown in FIGS.
As shown in (b), it has a two-stage flat plate shape including an upper step portion 24a and a lower step portion 24b that are loosely fitted in the upper opening portion of the storage part 4, and the vicinity of the four corners of the upper step portion 24a. In this case, a bolt hole 25 is bored so that the embedded bolt 23 can be introduced when the upper lid 24 is placed on the upper opening of the storage section 4. Further, a handling hook 6 is provided on the corner side of the bolt hole 25. Further, the upper lid 24 is provided with four mortar-filled portions 27 filled with mortar in the holes provided through in the depth direction.

Then, as shown in FIG. 9A, the upper lid 2
When the container 4 filled with the mortar 9 is covered with 4, the embedded bolt 23 is introduced from the lower side of the bolt hole 25. Thereafter, as shown in FIG. 9B, each embedded bolt 23 is tightened with a nut 28 to fix the upper lid 24 to the storage section 4.

The TRU waste container 22 according to this embodiment has the structure as described above, and therefore the upper lid 24
Is securely fixed to the TRU waste container 22 itself. As a result, the TRU waste container 22
However, even if it falls during lifting and transfer,
Since the upper lid 24 does not come off, it is possible to avoid damage to the storage containers such as the drum can 61 and the canister 62 stored inside.

In the TRU waste storage container 22 according to the present embodiment, the upper lid 24 is fitted in the storage portion 4, but since the upper lid 24 is provided with the mortar filling portion 27, the first embodiment is performed. As explained in the form of
It is possible to prevent the inside of the RU waste container 22 from entering, allow gas to pass therethrough, and cool the drum can 61 and the canister 62 stored therein.

As a result of the above, it becomes possible to enhance the safety of the TRU waste during storage.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such configurations. Within the scope of the technical idea of the invention as claimed in the claims, those skilled in the art can come up with various modifications and modifications, and the modifications and modifications are also within the technical scope of the present invention. Be understood to belong to.

[0045]

As described above, according to the present invention,
By fixing the upper lid to the TRU waste storage container itself by using a dedicated fixing means, even if it should drop during transfer, it prevents the storage container stored inside from popping out. You can

As described above, the damage of the storage container is prevented and the T
It is possible to realize a TRU waste storage container capable of safely storing RU.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a storage unit of a TRU waste body storage container according to a first embodiment.

FIG. 2 is a perspective view and a vertical cross-sectional view showing an example of the upper lid of the TRU waste container storage container according to the first embodiment.

FIG. 3 is a schematic diagram for explaining a state in which the storage unit of the TRU waste body storage container according to the first embodiment is covered with the upper lid.

FIG. 4 is a perspective view showing an example of a storage unit of the TRU waste body storage container according to the second embodiment.

FIG. 5 is a perspective view and a vertical cross-sectional view showing an example of an upper lid of the TRU waste container according to the second embodiment.

FIG. 6 is a schematic diagram for explaining a state in which the storage unit of the TRU waste body storage container according to the second embodiment is covered with the upper lid.

FIG. 7 is a perspective view showing an example of a storage unit of the TRU waste body storage container according to the third embodiment.

FIG. 8 is a perspective view and a vertical sectional view showing an example of an upper lid of the TRU waste container storage container according to the third embodiment.

FIG. 9 is a schematic diagram for explaining a state in which the storage unit of the TRU waste body storage container according to the third embodiment is covered with an upper lid.

FIG. 10 is a bird's-eye view showing a state in which a predetermined number of drums and canisters are stored in a TRU waste storage container according to the prior art.

[Explanation of symbols]

1, 14, 22, 60 ... TRU waste container 2 ... Bar arrangement 3 ... Reinforcing bar 4 ... Storage 5 ... Screw 6 ... Handling hook 7, 17, 24, 64 ... Top lid 8 ... Introduction hole 8a ... upper hole 8b ... Lower hole 9,10,11,21,63,65 ... Mortar 10 ... bolts 15… Top lid insertion port 16 ... Guide groove 18 ... Projection 19, 27 ... Mortar filling part 23 ... Embedded bolt 24a ... Upper part 24b ... Lower part 25 ... Bolt hole 28 ... Nut 61 ... drum can 62 ... Canister 66 ... Handling hook

Claims (4)

[Claims] 1. A TRU waste storage container for storing a plurality of storage containers storing TRU waste, wherein an opening is provided at an upper portion, the storage container is carried in through the opening, and a predetermined number of the storage containers are placed inside. And a storage unit for storing a predetermined number of storage containers in the storage unit,
T including an upper lid that closes the opening and a fixing unit that fixes the upper lid to the storage portion.
RU waste container. 2. A TRU waste storage container for storing a plurality of storage containers containing TRU waste, wherein an opening is provided at an upper portion, the storage container is carried in through the opening, and a predetermined number of the storage containers are placed inside. And a box-shaped storage unit for storing, when a predetermined number of storage containers are stored in the storage unit,
An upper lid that closes the opening, one end of which is fixed to a bottom surface of the storage portion and the other end of which is provided to extend toward the opening, and when the opening is closed by the upper lid, A container for storing TRU waste, comprising: a fixing rod for fixing the other end to the upper cover to fix the upper cover. 3. A TRU waste storage container for storing a plurality of storage containers containing TRU waste, wherein an opening is provided at an upper portion, the storage container is carried in through the opening, and a predetermined number of the storage containers are placed inside. And a box-shaped storage unit for storing, when a predetermined number of storage containers are stored in the storage unit,
An upper lid that closes the opening; a holding portion that is provided near the opening of the storage portion and that holds the upper lid so that the upper lid closes the opening; and an upper lid that is held by the holding portion. And a TRU waste storage container provided with a fixing means for fixing to the section. 4. A TRU waste storage container for storing a plurality of storage containers containing TRU waste, wherein the storage container is carried into the storage part having an opening, and the storage container is loaded into the storage part. When a predetermined number of the storage containers are carried in, the inside of the storage unit is filled with mortar, and then the opening is closed with an upper lid, and further the upper lid is fixed to the TRU waste storage container body. TRU waste storage container.