JP2000137096A - Compound processing vessel for radioactive waste - Google Patents

Compound processing vessel for radioactive waste

Info

Publication number
JP2000137096A
JP2000137096A JP10310491A JP31049198A JP2000137096A JP 2000137096 A JP2000137096 A JP 2000137096A JP 10310491 A JP10310491 A JP 10310491A JP 31049198 A JP31049198 A JP 31049198A JP 2000137096 A JP2000137096 A JP 2000137096A
Authority
JP
Japan
Prior art keywords
radioactive waste
mortar
main body
vessel
generated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP10310491A
Other languages
Japanese (ja)
Inventor
Ichiro Yanagisawa
一郎 柳澤
Kazuto Maeda
一人 前田
Shunichi Yasuda
俊一 安田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP10310491A priority Critical patent/JP2000137096A/en
Publication of JP2000137096A publication Critical patent/JP2000137096A/en
Withdrawn legal-status Critical Current

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  • Processing Of Solid Wastes (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent radioactive nuclide from migrating at low cost by constituting the vessel of a reinforced concrete construction main body of which the upper part is opened, and porous mortar to be filled therein and in which vessels containing radioactive waste or the like are buried. SOLUTION: The vessel main body 10 of a compound processing vessel for radioactive waste containing drum case A or canisters B containing radioactive waste generated in a nuclear energy related facilities for final processing, is, for example, constituted of an outer frame and a bottom plate formed out of reinforced concrete, and the upper part is opened. In the vessel main body 10, for example, drum cans A containing concrete solidified body of radioactive waste liquid are arranged in the four corners, canisters B containing shear end parts or the like generated at reprocessing of fuel assembly are arranged on the center part, and finally porous high fluidal mortar is filled. Because the porous mortar is used, generated crack is small, and because the waste is primarily sealed, it does not leak on the mortar side for a considerable long term.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、放射性廃棄物を処
分する容器に関する。
The present invention relates to a container for disposing of radioactive waste.

【0002】[0002]

【従来の技術】原子力発電所や原子炉燃料再処理施設等
の原子力関連施設において発生する放射性廃棄物には、
ガラス固化体、ハルエンドピース(燃料集合体の剪断端
部)、雑固体、放射性廃液固化体等があり、これらは一
般的にドラム缶やキャニスタ(相対的に小型の容器)に
入れて取り扱われている。これらの放射性廃棄物は、沿
う等長期間に亙って最終処分することが計画されてい
る。この貯蔵に際しては、放射性核種の浸出量を最小に
保つ必要があるので、更に処分容器の中に収納するのが
好ましい。。而して、処分容器としては、原子力発電所
から出る低レベル放射性廃棄物用ではあるが、コンクリ
ート容器(実開昭61−81294号公報)が提案され
ている。この容器の構造を概説すると、その本体胴部、
蓋部、底部を鋼繊維強化コンクリート構造体として別体
で製作し、これらをパッキン材や緩衝材を挟んで接合
し、ボルト締めにより密封容器として構成するものであ
る。そして、この構成により、密封性と製作容易性とを
確保している。
2. Description of the Related Art Radioactive waste generated in nuclear facilities such as nuclear power plants and nuclear reactor reprocessing facilities includes:
There are vitrified materials, hull end pieces (sheared ends of fuel assemblies), miscellaneous solids, radioactive liquid waste solidified materials, etc. These are generally handled in drums and canisters (relatively small containers). I have. These radioactive wastes are planned for final disposal over a long period of time, for example. During this storage, it is necessary to keep the amount of radionuclides leached to a minimum, so that it is preferable to further store them in a disposal container. . As a disposal container for low-level radioactive waste from a nuclear power plant, a concrete container (Japanese Utility Model Application Laid-Open No. 61-81294) has been proposed. To outline the structure of this container, its body,
The lid part and the bottom part are manufactured separately as a steel fiber reinforced concrete structure, and these are joined together with a packing material or a cushioning material interposed therebetween, and are configured as a sealed container by bolting. And, with this configuration, the sealing performance and the easiness of production are ensured.

【0003】[0003]

【発明が解決しようとする課題】然るに、前述のような
コンクリート容器の中に、前述のドラム缶やキャニスタ
を収納した場合、これらの腐食による発生ガスや内容物
の腐食による発生ガスにより内圧が上昇し、クラックの
発生や破損が生ずる虞れがある。 このような不具合
は、地中深くに処分する場合と雖も、長期的な核種浸出
量が増大する虞れがある。 又、前述のコンクリート容
器は、シール構造及び耐食性を向上させているため、こ
れに伴うコストの上昇もある。従って、本発明は、放射
性廃棄物を収容したドラム缶やキャニスタを皿に収納す
る安価な処分容器を提供することを目的とする。
However, when the above-mentioned drum or canister is housed in the above-mentioned concrete container, the internal pressure increases due to the gas generated by the corrosion of these and the gas generated by the corrosion of the contents. There is a possibility that cracks may occur or break. Such a problem may increase the long-term leachability of nuclides, even when disposed deep underground. In addition, the above-mentioned concrete container has an improved seal structure and corrosion resistance, so that there is a rise in cost associated therewith. Accordingly, an object of the present invention is to provide an inexpensive disposal container for storing a drum or canister containing radioactive waste in a dish.

【0004】[0004]

【課題を解決するための手段】如上の目的を達成するた
め、本発明によれば、放射性廃棄物を処分するために収
容する複合処分容器は、上部が開放された鉄筋コンクリ
ート構造の容器本体と、この容器本体の内部に充填され
該容器本体の中に収容されるドラム缶やキャニスタ等の
放射性廃棄物収容容器を埋め込むポーラス状モルタルと
を有する。この放射性廃棄物収容容器の中には、放射性
廃液のセメント固化体やハルエンドピース等が所定の要
領で収容され、密封されている。
According to the present invention, there is provided, in accordance with the present invention, a composite disposal container for storing radioactive waste, comprising: a container body having a reinforced concrete structure having an open top; A porous mortar for filling a radioactive waste container such as a drum or a canister filled in the container main body and stored in the container main body. In the radioactive waste storage container, a solidified cement of radioactive waste liquid, a hull end piece, and the like are stored in a predetermined manner and sealed.

【0005】[0005]

【発明の実施の形態】以下添付の図面を参照して本発明
の実施形態を説明する。図1乃至図3を参照するに、容
器本体10の外枠11,13,15,17は、鉄筋コン
クリートから形成されていて、同様な構成の底板19で
下方が閉じられているが上方は開放されている。そし
て、底板19の底面には、運搬用フォークリフトのフォ
ークが入るためのフォークポケット19aが形成されて
いる。本実施形態において、容器本体10の平断面形状
は略正方形の矩形となっているが、勿論これに限定され
るものではない。しかしながら、これらの容器を並べて
おいた場合の空間使用効率は、両者の間の隙間を最小に
できるため、矩形断面が好適である。そして、特に図2
及び図3から明らかなように、外枠11,13,15,
17の上面は平坦になっていて、四隅に吊り上げ用すみ
金物21が設けられている。これは、容器本体10をク
レーン(図示しない。)等で吊り上げる場合に使用し、
吊具が係合するものであるが、外枠11,13,15,
17の上面より低位にあって段積みの支障ににはならな
い。尚、吊り上げ用すみ金物21は、外枠11,13,
15,17の外面上部に突設したトラニオンに置換して
も良いことは勿論である。
Embodiments of the present invention will be described below with reference to the accompanying drawings. Referring to FIGS. 1 to 3, the outer frames 11, 13, 15, and 17 of the container body 10 are made of reinforced concrete, and the lower part thereof is closed by a bottom plate 19 having the same structure, but the upper part is opened. ing. A fork pocket 19a for receiving a fork of a transport forklift is formed on the bottom surface of the bottom plate 19. In the present embodiment, the plane cross-sectional shape of the container body 10 is a substantially square rectangle, but is not limited to this. However, the space use efficiency when these containers are arranged side by side can minimize the gap between them, so that a rectangular cross section is preferable. And especially FIG.
3 and FIG. 3, the outer frames 11, 13, 15,
The upper surface of 17 is flat, and corner fittings 21 for lifting are provided at four corners. This is used when the container body 10 is lifted by a crane (not shown) or the like,
The hanger is engaged with the outer frames 11, 13, 15,
17 is lower than the upper surface of the stack 17 and does not hinder stacking. In addition, the hanging metal fittings 21 are provided with outer frames 11, 13, and
Needless to say, trunnions protruding from the upper portions of the outer surfaces of 15, 15 may be replaced.

【0006】そして、容器本体10の中には、放射性廃
液のコンクリート固化体を収容した200lドラム缶A
が四隅に位置して配置される。勿論アスファルト固化体
を収容したドラム缶でも良い。更に、中央部には燃料集
合体の再処理時に発生したハルエンドピースを収容した
キャニスタBが配置され、最終的にポーラス状の高流動
モルタル23が充填される。高流動モルタル23の上面
は、外枠11,13,15,17の上面より若干低位に
あり、段積みの支障にならず、更に200lドラム缶A
及びキャニスタBを完全に埋め込んだ形になっている。
このように、容器本体10の中に高流動モルタル23を
充填し、所定の期間養生した後、200lドラム缶A及
びキャニスタBと一体化した容器本体10を処分場乃至
貯蔵場所に運んで貯蔵する。
The container body 10 contains a 200-liter drum A containing a concrete solidified radioactive waste liquid.
Are located at the four corners. Of course, a drum containing an asphalt solidified body may be used. Further, a canister B containing a hull end piece generated at the time of reprocessing of the fuel assembly is disposed in the center, and is finally filled with a porous high-flow mortar 23. The upper surface of the high-fluidity mortar 23 is slightly lower than the upper surfaces of the outer frames 11, 13, 15, and 17, which does not hinder stacking.
And the canister B is completely embedded.
As described above, the container body 10 is filled with the high-fluidity mortar 23, and after curing for a predetermined period, the container body 10 integrated with the 200-liter drum A and the canister B is carried to a disposal site or a storage place for storage.

【0007】以上のように構成した本実施形態において
は、充填材としてポーラス状モルタルを使用しているの
で、発生クラックが比較的小さいから核種が移行しな
い。又、放射性廃棄物は、一次的にはドラム缶やキャニ
スタの中に密封収容されているので、かなりの長い間放
射性核種がモルタル側に漏出することも無い。尚、前記
実施形態において、コンクリート固化体を収容したドラ
ム缶やハルエンドピースを収容したキャニスタを容器本
体の中に配置したが、これ以外に表面除染した放射化炉
内構造物等、又は溶融体等を収容した放射性廃棄物収納
物等も配置しても良いことは勿論である。
[0007] In this embodiment configured as described above, since the porous mortar is used as the filler, the generated nuclides do not migrate because the generated cracks are relatively small. Further, since the radioactive waste is primarily sealed in a drum or canister, the radionuclide does not leak to the mortar for a considerably long time. In the above-mentioned embodiment, the drum can containing the solidified concrete and the canister containing the hull end piece are arranged in the container main body. It is a matter of course that a radioactive waste storage material or the like that stores therein or the like may be arranged.

【0008】[0008]

【発明の効果】以上説明したように、本発明によれば、
放射性廃棄物を収容した容器を処分容器の中に配置し、
これをポーラス状モルタルの中に埋め込んだので、放射
性核種の移行を防止できると共に、処分容器を低コスト
で構成することができる。
As described above, according to the present invention,
Place the container containing the radioactive waste in the disposal container,
Since this is embedded in the porous mortar, migration of radionuclides can be prevented, and the disposal container can be configured at low cost.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.

【図2】図1に対応する立断面図である。FIG. 2 is an elevational sectional view corresponding to FIG.

【図3】前記実施形態の位置部切り欠き斜視図である。FIG. 3 is a cutaway perspective view of a position part of the embodiment.

【符号の説明】[Explanation of symbols]

10 容器本体 11,13,15,17 外枠 19 底板 21 すみ金物 23 モルタル A ドラム缶 B キャニスタ DESCRIPTION OF SYMBOLS 10 Container main body 11, 13, 15, 17 Outer frame 19 Bottom plate 21 Corner metal 23 Mortar A Drum can B Canister

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 上部が開放された鉄筋コンクリート構造
の容器本体と、同容器本体の内部に充填され該容器本体
の中に収容される放射性廃棄物収容容器を埋め込むポー
ラス状モルタルとを有する放射性廃棄物用複合処分容
器。
1. A radioactive waste comprising: a container body having a reinforced concrete structure having an open upper part; and a porous mortar for filling a radioactive waste container to be filled in the container body and housed in the container body. For compound disposal containers.
JP10310491A 1998-10-30 1998-10-30 Compound processing vessel for radioactive waste Withdrawn JP2000137096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10310491A JP2000137096A (en) 1998-10-30 1998-10-30 Compound processing vessel for radioactive waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10310491A JP2000137096A (en) 1998-10-30 1998-10-30 Compound processing vessel for radioactive waste

Publications (1)

Publication Number Publication Date
JP2000137096A true JP2000137096A (en) 2000-05-16

Family

ID=18005877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10310491A Withdrawn JP2000137096A (en) 1998-10-30 1998-10-30 Compound processing vessel for radioactive waste

Country Status (1)

Country Link
JP (1) JP2000137096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022050894A1 (en) * 2020-09-03 2022-03-10 Gashubunited Utility Pte Ltd A caisson box structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022050894A1 (en) * 2020-09-03 2022-03-10 Gashubunited Utility Pte Ltd A caisson box structure

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20060110