JP2000321397A - Waste vessel for geologic disposal of heat exothermic tru contaminated radioactive waste - Google Patents
Waste vessel for geologic disposal of heat exothermic tru contaminated radioactive wasteInfo
- Publication number
- JP2000321397A JP2000321397A JP11128146A JP12814699A JP2000321397A JP 2000321397 A JP2000321397 A JP 2000321397A JP 11128146 A JP11128146 A JP 11128146A JP 12814699 A JP12814699 A JP 12814699A JP 2000321397 A JP2000321397 A JP 2000321397A
- Authority
- JP
- Japan
- Prior art keywords
- container
- waste
- pressure vessel
- tru
- radioactive waste
- 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.)
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Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、使用済燃料の再処
理工程で発生する廃棄物のうち、発熱性のハルエンドピ
ースなどを含むα核種の濃度の高い廃棄物（以下、発熱
性のＴＲＵ汚染放射性廃棄物と称する）を深地下トンネ
ル空洞などの地層処分施設内に安全に定着し、深地下環
境下で長期間安全に閉じ込めておくことができる発熱性
のＴＲＵ汚染放射性廃棄物の地層処分用廃棄体容器に関
するものである。[0001] The present invention relates to wastes having a high concentration of α-nuclide containing heat-producing hull end pieces and the like (hereinafter referred to as heat-producing TRUs). Geological disposal of exothermic TRU-contaminated radioactive waste that can be safely settled in a geological disposal facility such as a deep underground tunnel cavity and safely stored in a deep underground environment for a long period of time. It relates to a waste container.
【０００２】[0002]
【従来の技術】従来、一般的なＴＲＵ廃棄物処分用容器
として、コンクリート製の角型容器が提案されている
が、コンクリート製の角型容器は、落下、衝撃強度の確
保、水密性、耐圧性などに難点がある。2. Description of the Related Art Conventionally, as a general container for disposal of TRU waste, a rectangular container made of concrete has been proposed. However, a rectangular container made of concrete is capable of dropping, ensuring impact strength, watertightness, and pressure resistance. There are difficulties in sex.
【０００３】コンクリート製の角型容器の強度、耐圧性
を向上させるには、先ず、容器の肉厚を増加させること
が考えられるが、その場合には、容器自体の重量が増加
するため、無人の自動運転を要求されるクレーンやフォ
ークリフトなどの搬送装置の搬送能力を増強させる必要
があり、深地下処分施設の合理性、安全性の確保の観点
から制約を受けるため、該容器の収納数が制限される。In order to improve the strength and pressure resistance of a rectangular container made of concrete, it is conceivable to first increase the wall thickness of the container. In that case, however, the weight of the container itself increases, so It is necessary to increase the transfer capacity of transfer equipment such as cranes and forklifts that require automatic operation of the container, and this is limited from the viewpoint of ensuring the rationality and safety of deep underground disposal facilities. Limited.
【０００４】また、角型容器は、搬送に際し、定置位置
及び方向性の精度要求が大きく、ハンドリングが難しい
などの問題がある。また、容器のコンクリート厚みの増
加は、発熱の除去の妨げになる。[0004] In addition, the rectangular container has a problem in that it requires a high accuracy of a fixed position and a direction when transporting, and is difficult to handle. Also, an increase in the concrete thickness of the container hinders the removal of heat.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる従来
の問題を解消するためになされたものであり、その目的
とするところは、強度や耐圧性及び長期間の封じ込め
性、ハンドリング性および定置性に富む発熱性のＴＲＵ
汚染放射性廃棄物の地層処分用廃棄体容器を提供するこ
とにある。SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and has as its object the strength, pressure resistance, long-term containment, handling, and stationary. Exothermic TRU
An object of the present invention is to provide a waste container for geological disposal of contaminated radioactive waste.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
め、本発明に係る発熱性のＴＲＵ汚染放射性廃棄物の地
層処分用廃棄体容器は、円筒状の鋼製耐圧容器内に、発
熱性のＴＲＵ汚染放射性廃棄物を封入した一定形状寸法
の円筒状の１次容器７本を正六角形状に配置した後、頂
部鏡を遠隔自動溶接して密閉することを特徴としてい
る。In order to solve the above problems, a waste container for geological disposal of exothermic TRU-contaminated radioactive waste according to the present invention is provided in a cylindrical steel pressure-resistant container. After arranging seven cylindrical primary containers of a fixed shape and enclosing TRU-contaminated radioactive waste in a regular hexagonal shape, the top mirror is automatically remote-welded and hermetically sealed.
【０００７】上記構成によれば、従来のコンクリート製
の角型容器に比べ、廃棄体容器の強度、耐圧性、定置
性、ハンドリング性、定置時における耐震性、落下安定
性などが大幅に向上する。[0007] According to the above configuration, the strength, pressure resistance, stationary, handling, seismic resistance during stationary, drop stability, etc. of the waste container are greatly improved as compared with the conventional concrete rectangular container. .
【０００８】また、本発明は、円筒状の鋼製耐圧容器
に、耐圧容器の頂部鏡の上方に環状又は円板状の頂板を
設け、耐圧容器の底部鏡の下方に環状又は円板状の底板
を設けているため、環状又は円板状の頂板及び底板を利
用して廃棄体容器を多段に積み重ねて廃棄することがで
きる。Further, the present invention provides a cylindrical steel pressure vessel having an annular or disk-shaped top plate provided above a top mirror of the pressure vessel, and an annular or disk-shaped plate provided below the bottom mirror of the pressure vessel. Since the bottom plate is provided, the waste container can be stacked in multiple stages and discarded using the annular or disk-shaped top plate and bottom plate.
【０００９】また、本発明は、底板の上方に環状のフォ
ーク受け部を設けているため、ハンドリングし易くな
り、無人の自動運転フォークリフトの適用が可能にな
る。更に、本発明は、環状又は円板状の頂板や底板、及
び環状のフォーク受け部が、夫々、冷却フィンの役目を
するため、耐圧容器の過熱を防ぐことができる。Further, according to the present invention, since an annular fork receiving portion is provided above the bottom plate, handling becomes easy, and an unmanned automatic driving forklift can be applied. Further, according to the present invention, since the annular or disk-shaped top plate and bottom plate and the annular fork receiving portion each serve as a cooling fin, it is possible to prevent the pressure vessel from overheating.
【００１０】ここで、円筒状の鋼製耐圧容器に一定形状
寸法の１次容器７本をセル内クレーン等を用いて遠隔操
作により正六角形状に配置収納するため、該１次容器の
底部形状に適合する突起状若しくは開口を有する底部支
持板を鋼製耐圧容器内に設置することが望ましい。Here, in order to arrange and store seven primary containers having a fixed shape in a cylindrical steel pressure-resistant container in a regular hexagonal shape by remote operation using a crane or the like in a cell, the bottom shape of the primary container is reduced. It is desirable to install a bottom support plate having a projection or an opening conforming to the above in a steel pressure vessel.
【００１１】また、耐圧容器の強度の向上及びＴＲＵ汚
染廃棄物の熱除去及び放射性物質の移行抑制のために
は、耐圧容器と発熱性のＴＲＵ汚染放射性廃棄物を封入
した円筒状の１次容器のすき間に頂部鏡の溶接密封後に
底部支持板の下方に開口する充填材注入パイプの頂部鏡
部注入口より充填材を圧入、前記注入口の端栓部を自動
溶接して密閉することが望ましい。ここで、充填材とし
ては、普通ポルトランドセメントモルタルが望ましい。Further, in order to improve the strength of the pressure-resistant container, remove heat from the TRU-contaminated waste and suppress the transfer of radioactive substances, a cylindrical primary container in which the heat-resistant TRU-contaminated radioactive waste is sealed is used. It is preferable that the filler is press-fitted from the top mirror injection port of the filler injection pipe which is opened below the bottom support plate after welding sealing of the top mirror in the gap, and the end plug of the injection port is automatically welded and sealed. . Here, as the filler, ordinary Portland cement mortar is desirable.
【００１２】[0012]
【発明の実施の形態】以下、図面を参酌しながら本発明
の実施の形態を説明する。図１に示すように、本発明の
廃棄体容器１は、炭素鋼製であり、主として、耐圧容器
２、頂板３、底板４、及びフォーク受け部５から構成さ
れている。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the waste container 1 of the present invention is made of carbon steel, and mainly includes a pressure-resistant container 2, a top plate 3, a bottom plate 4, and a fork receiving portion 5.
【００１３】耐圧容器２は、円筒状の胴部１１、ドーム
状の蓋鏡部１２、及びドーム状の底鏡部１３から構成さ
れている。そして、耐圧容器２の上方には、図３に示す
ように、環状の頂板３が設けられている。頂板３は、第
１支持脚１４を介して蓋鏡部１２に固定されている。頂
板３としては、図３のように、ドーナツ盤状のものが好
ましいが、円板状、八角形などの多角形で充填材注入口
への開口６を有するものでもよい。The pressure vessel 2 comprises a cylindrical body 11, a dome-shaped lid mirror 12, and a dome-shaped bottom mirror 13. Above the pressure vessel 2, an annular top plate 3 is provided, as shown in FIG. The top plate 3 is fixed to the lid mirror 12 via the first support legs 14. The top plate 3 is preferably a donut-shaped plate as shown in FIG. 3, but may be a disk-shaped or octagon-shaped polygon having an opening 6 to the filler inlet.
【００１４】また、耐圧容器２の下方には、環状の底板
４が設けられている。底板４は、第２支持脚１５を介し
て底鏡部１３に固定されている。底板４としては、頂板
３と同様に、ドーナツ盤状又は円板状、八角形などの多
角形のものでもよい。An annular bottom plate 4 is provided below the pressure vessel 2. The bottom plate 4 is fixed to the bottom mirror 13 via the second support legs 15. As the bottom plate 4, similarly to the top plate 3, a donut disk shape, a disk shape, or a polygonal shape such as an octagon may be used.
【００１５】更に、底板４の上方にフォーク受け部５を
設けている。フォーク受け部５は、第２支持脚１５の中
間部分に取り付けられている。また、このフォーク受け
部５は、図４に示すように、ドーナツ盤状に形成されて
いる。このフォーク受け部５と上記底板４との間は、図
示しないフォークリフトのフォークを挿入できる間隔を
有していることが重要である。Further, a fork receiving portion 5 is provided above the bottom plate 4. The fork receiving portion 5 is attached to an intermediate portion of the second support leg 15. The fork receiving portion 5 is formed in a donut shape as shown in FIG. It is important that a space is provided between the fork receiving portion 5 and the bottom plate 4 so that a fork of a forklift (not shown) can be inserted.
【００１６】上記耐圧容器２には、図１に示すように、
発熱性のＴＲＵ汚染放射性廃棄物を封入した円筒状のキ
ャニスタ（１次容器）２１が収容されている。これらの
キャニスタ２１は、図２に示すように、耐圧容器２内に
７本、正六角形状に収容されている。また、これらのキ
ャニスタ２１は、キャニスタ底部形状に適合する突起状
若しくは開口を有する底部支持板１６上に載置されてい
る。In the pressure vessel 2, as shown in FIG.
A cylindrical canister (primary container) 21 containing heat-generating TRU-contaminated radioactive waste is accommodated. As shown in FIG. 2, seven canisters 21 are housed in a pressure-resistant container 2 in a regular hexagonal shape. These canisters 21 are mounted on a bottom support plate 16 having a projection or an opening that matches the shape of the canister bottom.
【００１７】また、耐圧容器２には、セメントモルタル
注入口１７、及び上記底部支持板１６を貫通している排
気口１８が設けられており、耐圧容器２と当該耐圧容器
２内に収納した７本のキャニスタ２１とのすき間に普通
ポルトランドセメントモルタルＡを充填した後、その開
口部は、夫々、閉塞される。上記胴部１１と蓋鏡部１２
とは、耐圧容器２内にキャニスタ２１を収容した後、図
示しない自動溶接装置によって溶接される。The pressure vessel 2 is provided with a cement mortar injection port 17 and an exhaust port 18 penetrating the bottom support plate 16. After the ordinary portland cement mortar A is filled in the gap between the canister 21 and the book, the openings are respectively closed. The body 11 and the lid mirror 12
Means that the canister 21 is housed in the pressure vessel 2 and then welded by an automatic welding device (not shown).
【００１８】一方、図５及び図６に示すように、廃棄体
容器１は、地中深く設けられた横穴式のトンネル３１内
に各列とも１６個ずつ定置されている。つまり、１段目
及び２段目は、夫々、廃棄体容器１が６個ずつ定置さ
れ、３段目には、廃棄体容器１が４個定置されている。On the other hand, as shown in FIGS. 5 and 6, 16 waste containers 1 are arranged in each row in a horizontal hole tunnel 31 provided deep underground. That is, the first stage and the second stage are each provided with six waste containers 1, and the third stage is provided with four waste containers 1.
【００１９】上記のように、廃棄体容器１は、耐圧容器
２の頂部上方に環状の頂板３を有する一方、耐圧容器２
の底部下方に環状の底板４を有しているから、環状の頂
板３及び環状の底板４を利用して数段積み重ねることが
できる。As described above, the waste container 1 has the annular top plate 3 above the top of the pressure-resistant container 2 while the pressure-resistant container 2
Since the bottom plate 4 has an annular bottom plate 4 below the bottom portion, several stages can be stacked using the annular top plate 3 and the annular bottom plate 4.
【００２０】ところで、発熱性のＴＲＵ汚染放射性廃棄
物は、２０ｗ程度の発熱量を有しているが、本発明の廃
棄体容器１は、環状の頂板３、環状の底板４、及び環状
のフォーク受け部５が、夫々、冷却フィンの役目をする
ため、耐圧容器２の過熱を防ぐ副次的な効果を有する。Incidentally, the exothermic TRU-contaminated radioactive waste has a heating value of about 20 watts. The waste container 1 of the present invention comprises an annular top plate 3, an annular bottom plate 4, and an annular fork. Since the receiving portions 5 each serve as a cooling fin, the receiving portion 5 has a secondary effect of preventing the pressure vessel 2 from being overheated.
【００２１】また、本発明の廃棄体容器１は、フォーク
受け部５を備えているため、フォークリフトのフォーク
によってハンドリングする時、簡単にハンドリングする
ことができる。その上、本発明の廃棄体容器１は、円筒
状のため、耐圧性に富む。Further, since the waste container 1 of the present invention is provided with the fork receiving portion 5, it can be easily handled when handled by a fork of a forklift. In addition, since the waste container 1 of the present invention is cylindrical, it has high pressure resistance.
【００２２】[0022]
【発明の効果】上記のように、本発明は、円筒状の鋼製
耐圧容器内に、発熱性のＴＲＵ汚染放射性廃棄物を封入
した一定形状寸法の円筒状の１次容器７本を正六角形状
に配置した後、頂部鏡を遠隔自動溶接して密閉するた
め、従来のコンクリート製の角型容器に比べ、廃棄体容
器の強度、耐圧性、定置性、ハンドリング性、定置時に
おける耐震性、落下安定性などが大幅に向上するように
なった。As described above, according to the present invention, in a cylindrical steel pressure vessel, seven cylindrical primary vessels each having a fixed shape and size and containing heat-generating TRU-contaminated radioactive waste are equilateral hexagonal. After being placed in the shape, the top mirror is remotely and automatically welded and sealed, so that compared to conventional concrete square containers, the strength, pressure resistance, stationary, handling, seismic resistance at the time of stationary, Dropping stability has been greatly improved.
【００２３】また、本発明は、円筒状の鋼製耐圧容器
に、耐圧容器の頂部鏡の上方に環状又は円板状の頂板を
設け、耐圧容器の底部鏡の下方に環状又は円板状の底板
を設けているため、環状又は円板状の頂板及び底板を利
用して廃棄体容器を多段に積み重ねて廃棄することがで
きるようになった。The present invention also provides an annular or disk-shaped top plate provided above a top mirror of a pressure-resistant container in a cylindrical steel pressure-resistant container, and an annular or disk-shaped plate below a bottom mirror of the pressure-resistant container. Since the bottom plate is provided, the waste containers can be stacked and discarded in multiple stages using the annular or disk-shaped top plate and bottom plate.
【００２４】また、本発明は、底板の上方に環状のフォ
ーク受け部を設けているため、ハンドリングし易くな
り、無人の自動運転フォークリフトの適用が可能になっ
た。更に、本発明は、環状又は円板状の頂板や底板、及
び環状のフォーク受け部が、夫々、冷却フィンの役目を
するため、耐圧容器の過熱を防ぐことができるようにな
った。Further, according to the present invention, since the annular fork receiving portion is provided above the bottom plate, handling becomes easy, and an unmanned automatic driving forklift can be applied. Further, in the present invention, the annular or disk-shaped top plate and bottom plate, and the annular fork receiving portion serve as cooling fins, respectively, so that overheating of the pressure-resistant container can be prevented.
【図１】本発明に係る廃棄体容器の一部断面を含む側面
図である。FIG. 1 is a side view including a partial cross section of a waste container according to the present invention.
【図２】上記廃棄体容器の一部断面を含む平面図であ
る。FIG. 2 is a plan view including a partial cross section of the waste container.
【図３】上記廃棄体容器の平面図である。FIG. 3 is a plan view of the waste container.
【図４】図１のＩＶ−ＩＶ断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;
【図５】廃棄体容器を地下トンネル内に多段に定置した
状態を示す横断面図である。FIG. 5 is a cross-sectional view showing a state where waste containers are set in multiple stages in an underground tunnel.
【図６】廃棄体容器を地下トンネル内に定置した状態を
示す平面図である。FIG. 6 is a plan view showing a state where the waste container is fixed in an underground tunnel.
１ 廃棄体容器 ２ 耐圧容器 ３ 頂板 ４ 底板 ５ フォーク受け部 ２１ １次容器 DESCRIPTION OF SYMBOLS 1 Waste container 2 Pressure container 3 Top plate 4 Bottom plate 5 Fork receiving part 21 Primary container
Claims (5)
ＲＵ汚染放射性廃棄物を封入した一定形状寸法の円筒状
の１次容器７本を正六角形状に配置した後、頂部鏡を遠
隔自動溶接して密閉することを特徴とする発熱性のＴＲ
Ｕ汚染放射性廃棄物の地層処分用廃棄体容器。1. A heat-resistant T is placed in a cylindrical steel pressure vessel.
A heat-generating TR characterized by arranging seven cylindrical primary containers of a constant shape and size filled with RU-contaminated radioactive waste in a regular hexagonal shape, and then automatically remote-welding the top mirror to seal it.
Waste container for geological disposal of U-contaminated radioactive waste.
部鏡の上方に環状又は円板状の頂板を設け、耐圧容器の
底部鏡の下方に環状又は円板状の底板を設け、かつ、前
記底板の上方に環状のフォーク受け部を設けたことを特
徴とする請求項１記載の発熱性のＴＲＵ汚染放射性廃棄
物の地層処分用廃棄体容器。2. A cylindrical steel pressure vessel is provided with an annular or disk-shaped top plate above the top mirror of the pressure vessel, and an annular or disk-shaped bottom plate is provided below the bottom mirror of the pressure vessel. The waste container for geological disposal of exothermic TRU-contaminated radioactive waste according to claim 1, wherein an annular fork receiving portion is provided above the bottom plate.
１次容器７本を正六角形状に配置収納するため、該１次
容器の底部形状に適合する突起状若しくは開口を有する
底部支持板を鋼製耐圧容器内に設置することを特徴とす
る請求項１記載の発熱性のＴＲＵ汚染放射性廃棄物の地
層処分用廃棄体容器。3. A bottom support having a projection or an opening conforming to the bottom shape of the primary container in order to arrange and house seven primary containers having a fixed shape and size in a regular hexagonal shape in a cylindrical steel pressure-resistant container. The waste container for geological disposal of exothermic TRU-contaminated radioactive waste according to claim 1, wherein the plate is placed in a steel pressure-resistant container.
棄物を封入した円筒状の１次容器のすき間に頂部鏡の溶
接密封後に底部支持板の下方に開口する充填材注入パイ
プの頂部鏡部注入口より充填材を圧入、前記注入口の端
栓部を自動溶接して密閉することを特徴とする請求項２
又は３記載の発熱性のＴＲＵ汚染放射性廃棄物の地層処
分用廃棄体容器。4. A top mirror portion of a filling material injection pipe which opens below a bottom support plate after a top mirror is welded and sealed in a gap between a pressure-resistant container and a cylindrical primary container enclosing heat-generating TRU-contaminated radioactive waste. 3. A filler is press-fitted from an injection port, and an end plug of the injection port is automatically welded and sealed.
Or a waste container for geological disposal of exothermic TRU-contaminated radioactive waste according to item 3.
タルであることを特徴とする請求項４記載の発熱性のＴ
ＲＵ汚染放射性廃棄物の地層処分用廃棄体容器。5. The exothermic T according to claim 4, wherein the filler is ordinary Portland cement mortar.
Waste container for geological disposal of RU-contaminated radioactive waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128146A JP2000321397A (en) | 1999-05-10 | 1999-05-10 | Waste vessel for geologic disposal of heat exothermic tru contaminated radioactive waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128146A JP2000321397A (en) | 1999-05-10 | 1999-05-10 | Waste vessel for geologic disposal of heat exothermic tru contaminated radioactive waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000321397A true JP2000321397A (en) | 2000-11-24 |
Family
ID=14977537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11128146A Pending JP2000321397A (en) | 1999-05-10 | 1999-05-10 | Waste vessel for geologic disposal of heat exothermic tru contaminated radioactive waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000321397A (en) |
-
1999
- 1999-05-10 JP JP11128146A patent/JP2000321397A/en active Pending
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