JPH10104397A - Device for storing solidified package - Google Patents
Device for storing solidified packageInfo
- Publication number
- JPH10104397A JPH10104397A JP25909796A JP25909796A JPH10104397A JP H10104397 A JPH10104397 A JP H10104397A JP 25909796 A JP25909796 A JP 25909796A JP 25909796 A JP25909796 A JP 25909796A JP H10104397 A JPH10104397 A JP H10104397A
- Authority
- JP
- Japan
- Prior art keywords
- ceiling
- storage
- solidified
- storage room
- shielding layer
- 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.)
- Pending
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は高レベル放射性廃液
などのガラス固化体を収容した固化パッケージの貯蔵装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage device for a solidified package containing a vitrified material such as a high-level radioactive liquid waste.
【０００２】[0002]
【従来の技術】核燃料再処理施設などからでる高レベル
放射性廃液は、液体のままでは取り扱いに不便なことか
らガラス原料と共にガラス溶解炉に入れられた後、１１
００℃〜１２００℃の高温で溶かし合わされ、その後筒
状のステンレス製の容器（キャニスタ）中に詰められて
固化パッケージとして安定した形に処理された後、地中
深く埋設処分されるようになっている。しかしながら、
この固化パッケージは高い熱を有していることから、地
層処分される前に図２に示すような屋外等に設けられた
コンクリート製の固化パッケージ貯蔵装置に約４０〜５
０年間程度貯蔵されて自然冷却されるようになってい
る。2. Description of the Related Art High-level radioactive liquid waste from a nuclear fuel reprocessing facility or the like is inconvenient to handle as a liquid, so it is placed in a glass melting furnace together with a glass raw material, and then the liquid is discharged.
They are melted at a high temperature of 00 ° C to 1200 ° C, then packed in a cylindrical stainless steel container (canister), processed into a solidified package in a stable form, and then buried deep underground. I have. However,
Since this solidified package has a high heat, it is stored in a concrete solidified package storage device provided outdoors or the like as shown in FIG.
It has been stored for about 0 years and is naturally cooled.
【０００３】図示するように、この固化パッケージ貯蔵
装置は丈夫な厚いコンクリートからなる貯蔵棟１内に、
上記固化パッケージ６を貯蔵する貯蔵室２を区画形成し
たものである。そして、図中矢印に示すように、貯蔵棟
１の一端部に形成された冷却空気入口３側から取り入れ
た冷却空気（外気）を貯蔵室２を通過させて貯蔵棟１の
他端部に形成された冷却空気出口４から大気中に放出す
るように流すことで貯蔵室２内の固化パッケージ６を空
冷するようになっている。[0003] As shown in the figure, this solidified package storage device is installed in a storage building 1 made of strong thick concrete.
The storage chamber 2 for storing the solidified package 6 is formed in a partitioned manner. Then, as indicated by an arrow in the figure, cooling air (outside air) taken in from a cooling air inlet 3 formed at one end of the storage building 1 is passed through the storage room 2 and formed at the other end of the storage building 1. The solidified package 6 in the storage chamber 2 is air-cooled by flowing the air into the atmosphere from the cooling air outlet 4.
【０００４】すなわち、この貯蔵室２は、図３に示すよ
うに貯蔵棟１内を上下に区画する鉄骨コンクリート製の
天井スラブ７に、上記固化パッケージ６を複数収容する
筒状の収納管８が複数本これを貫通して垂直に配列され
ると共に、これら各収納管８の周囲に、上下が開口した
筒状の通風管１０がそれぞれ天井スラブ７と平行に位置
する複数の支持架構板１１，１１…によって支持される
ように設けられている。[0004] That is, as shown in FIG. 3, the storage room 2 is provided with a cylindrical storage tube 8 for housing a plurality of the solidified packages 6 on a ceiling slab 7 made of steel concrete which vertically partitions the inside of the storage building 1. A plurality of support frame plates 11 are arranged vertically through the plurality of support frame plates 11, each of which has a cylindrical ventilation pipe 10, which is vertically open around the storage pipe 8, and which is positioned in parallel with the ceiling slab 7. 11 are provided so as to be supported.
【０００５】そして、この天井スラブ７の上方に設けら
れた図示しない固化パッケージ搬送クレーンによって各
収納管８に複数（通常１本の収納管８に対して９本程
度）の固化パッケージ６を上下多段に積み重ねるように
収納した後、その収納管８の上部開口部を収納管プラグ
１２で塞いで固化パッケージ６側からの放射線の遮蔽を
行うと共に、この収納管プラグ１２の上部を円板状の収
納管蓋１３で覆って収納管８内を密閉した後、図中破線
矢印に示すように各通風管１０の下部開口部から収納管
８の周囲に沿って冷却空気を上向流で流すことで、収納
管８側から発生する熱を奪って効率的に冷却するように
したものである。[0005] A plurality of solidified packages 6 (generally, about nine for one storage tube 8) are vertically stacked on each storage tube 8 by a solidified package transport crane (not shown) provided above the ceiling slab 7. Then, the upper opening of the storage tube 8 is closed with a storage tube plug 12 to shield radiation from the solidified package 6 side, and the upper portion of the storage tube plug 12 is stored in a disk shape. After covering the inside of the storage tube 8 by covering it with the tube lid 13, cooling air is caused to flow upward along the periphery of the storage tube 8 from the lower opening of each ventilation tube 10 as shown by the dashed arrow in the figure. The heat generated from the storage pipe 8 side is taken away to efficiently cool.
【０００６】[0006]
【発明が解決しようとする課題】ところで、この通風管
１０内を通過する冷却空気は、収納管８側からの熱によ
って熱せられ、通風管１０の上部開口部から出てきた際
にその温度が約８０℃以上に達する場合がある。しかし
ながら、この通風管１０の上部空間を区画する天井スラ
ブ７の耐熱温度は約６５℃であることから、このような
高温の冷却空気が天井スラブ７に直接触れると天井スラ
ブ７の表面（下面）が熱劣化してしまうおそれがある。By the way, the cooling air passing through the ventilation pipe 10 is heated by the heat from the storage pipe 8 side, and when the cooling air comes out from the upper opening of the ventilation pipe 10, its temperature is reduced. It can reach about 80 ° C or higher. However, since the heat-resistant temperature of the ceiling slab 7 that partitions the upper space of the ventilation pipe 10 is about 65 ° C., if such high-temperature cooling air directly touches the ceiling slab 7, the surface (lower surface) of the ceiling slab 7 May be thermally degraded.
【０００７】また、この収納管８の固化パッケージから
は常に大量の放射線が放出されていることから、その放
射線、特にγ線によるヒーティング効果により、さらに
天井スラブ７表面の熱劣化を促進してしまうことも考え
られる。Further, since a large amount of radiation is constantly emitted from the solidified package of the storage tube 8, the heating effect of the radiation, particularly γ-ray, further promotes the thermal deterioration of the surface of the ceiling slab 7. It is also conceivable.
【０００８】一方、この収納管８の上部開口部を塞ぐ収
納管蓋１３は、その厚さが数ｍｍ〜数ｃｍ程度の薄肉の
鉄板であれば、通常の保管上、充分な強度と密閉性を保
てることができるが、万一の飛来物の落下、すなわち飛
行機のエンジン部や隕石等の重量物の落下などを考慮し
た場合、強度上万全とは言い難い。On the other hand, the storage tube lid 13 for closing the upper opening of the storage tube 8 is a thin steel plate having a thickness of several mm to several cm, and has sufficient strength and airtightness for ordinary storage. However, in consideration of the fall of a flying object, that is, the fall of a heavy object such as an engine part of an airplane or a meteorite, it is hard to say that the strength is perfect.
【０００９】そこで、本発明はこのような課題を有効に
解決するために案出されたものであり、その目的は、冷
却空気により天井スラブの熱劣化を効果的に防止できる
と共に、飛来物に対する充分な防護機能を有する新規な
固化パッケージ貯蔵装置を提供するものである。Therefore, the present invention has been devised in order to effectively solve such a problem, and an object of the present invention is to prevent the thermal deterioration of a ceiling slab by cooling air effectively and to prevent flying objects. An object of the present invention is to provide a novel solidified package storage device having a sufficient protective function.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
に本発明は、先ず、コンクリート製の貯蔵室内に、高熱
を発生する固化パッケージを収納した収納管を複数配置
すると共に、上記貯蔵室の底部側から天井側に冷却空気
を流してその収納管を空冷するようにした固化パッケー
ジの貯蔵装置において、上記貯蔵室の天井を区画する天
井スラブの下面に断熱層を形成すると共に、その断熱材
層の下面に上記収納管側から放射されるγ線を遮蔽する
遮蔽層を形成したものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention firstly arranges a plurality of storage tubes containing solidified packages that generate high heat in a concrete storage room, In a storage device of a solidified package in which cooling air is flown from the bottom side to the ceiling side to cool the storage tube by air, a heat insulating layer is formed on a lower surface of a ceiling slab that divides a ceiling of the storage room, and the heat insulating material is formed. On the lower surface of the layer, a shielding layer for shielding gamma rays emitted from the storage tube side is formed.
【００１１】すなわち、貯蔵室の天井を区画する天井ス
ラブの下面に断熱層を形成することで、収納管側の熱で
高温になった冷却空気の熱が直接天井スラブに伝わらな
くなり、高熱による天井スラブ表面の熱劣化が未然に防
止される。尚、この断熱層を構成する材質としては特に
限定されるものではないが、例えば、ガラスウールやロ
ックウールなどの耐熱性及び耐腐食性に優れたものが好
ましい。That is, by forming a heat insulating layer on the lower surface of the ceiling slab that partitions the ceiling of the storage room, the heat of the cooling air heated by the heat of the storage pipe side is not directly transmitted to the ceiling slab. Thermal deterioration of the slab surface is prevented beforehand. The material constituting the heat insulating layer is not particularly limited, but for example, a material excellent in heat resistance and corrosion resistance such as glass wool or rock wool is preferable.
【００１２】また、この断熱層に加え、この断熱層の下
面に貯蔵室内の収納管側から放射される放射線を遮蔽す
る遮蔽層を形成することで、収納管側から放射される放
射線による天井スラブ表面の加熱、特にγ線によるγヒ
ーティング現象による加熱をも効果的に防止することが
できる。尚、この遮蔽層を構成する材質も断熱層同様、
特に限定されるものではないが、遮蔽性、加工性、経済
性等に優れた鉄板が好ましい。Further, in addition to the heat insulating layer, a shielding layer for shielding the radiation radiated from the storage tube side in the storage chamber is formed on the lower surface of the heat insulating layer, so that the ceiling slab due to the radiation radiated from the storage tube side. It is also possible to effectively prevent surface heating, particularly heating due to γ-heating phenomenon due to γ-rays. The material constituting the shielding layer is the same as the heat insulating layer,
Although not particularly limited, an iron plate excellent in shielding property, workability, economy, and the like is preferable.
【００１３】次に、上記断熱層と遮蔽層に加え、さら
に、上記収納管の上部開口部を板厚が１０ｃｍ以上の炭
素鋼板からなる収納管蓋で塞いだことにより、収納管の
密閉性は勿論、飛来物落下に対する収納管上部開口部の
防護機能が大幅に向上する。Next, in addition to the heat insulating layer and the shielding layer, the upper opening of the storage pipe is closed with a storage pipe lid made of a carbon steel plate having a thickness of 10 cm or more. Of course, the function of protecting the upper opening of the storage tube against falling of flying objects is greatly improved.
【００１４】[0014]
【発明の実施の形態】次に、本発明を実施する好適一形
態を添付図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
【００１５】図１は本発明に係る固化パッケージの貯蔵
装置の実施の一形態を示したものであり、図中７は上述
した貯蔵室２の天井部を区画形成する天井スラブ、８は
固化パッケージ６を上下多段に収容する収納管、１０は
この収納管８の周囲を囲繞するように設けられた管状の
通風管、１１はこの通風管１０を貯蔵室２内に支持固定
するための支持架構、破線矢印は冷却空気の流れを示す
ものである。FIG. 1 shows an embodiment of a storage device for a solidified package according to the present invention. In FIG. 1, reference numeral 7 denotes a ceiling slab which forms the ceiling of the storage room 2 described above, and reference numeral 8 denotes a solidified package. A storage pipe 10 for accommodating the upper and lower tiers 6 is a tubular ventilation pipe provided so as to surround the storage pipe 8, and a support frame 11 for supporting and fixing the ventilation pipe 10 in the storage room 2. , Broken line arrows indicate the flow of cooling air.
【００１６】この収納管８は、その上部開口部が天井ス
ラブ７を貫通するように一体的に設けられており、さら
に、その上部開口部には固化パッケージ６側からの放射
線漏れを防止する遮蔽プラグ１２が嵌め込まれていると
共に、この遮蔽プラグ１２の上方には円板状の収納管蓋
１３が嵌め込まれて収納管８内を密閉するようになって
いる。ここで、収納管蓋１３はその板厚が１０ｃｍ以上
の炭素鋼板から形成されて極めて高い強度を有すること
から、万一天井スラブ７上に物が落下して衝突した場合
でも、これが破損することがなくなり、遮蔽プラグ１２
の機能及び固化パッケージ６の健全性を維持することが
できる。The storage tube 8 has an upper opening integrally provided so as to penetrate the ceiling slab 7, and further has a shielding for preventing radiation leakage from the solidified package 6 side at the upper opening. The plug 12 is fitted, and a disk-shaped storage tube lid 13 is fitted above the shielding plug 12 to seal the inside of the storage tube 8. Here, since the storage tube lid 13 is formed of a carbon steel plate having a thickness of 10 cm or more and has extremely high strength, even if an object falls on the ceiling slab 7 and collides, the storage tube lid 13 may be damaged. Disappears and the shielding plug 12
And the soundness of the solidified package 6 can be maintained.
【００１７】また、図示するように天井スラブ７の下面
にはガラスウールやロックウールなどからなる断熱層１
４が形成されていると共に、この断熱層１４の下面には
鉄板等の放射線遮蔽性に優れた遮蔽層１５が形成されて
いる。そして、これら断熱層１４及び遮蔽層１５は天井
スラブ７下面から突出したアンカーボルト１６によって
天井スラブ７下面に強固に固定されている。As shown in the figure, a heat insulating layer 1 made of glass wool or rock wool is provided on the lower surface of the ceiling slab 7.
4 is formed, and a shielding layer 15 such as an iron plate having excellent radiation shielding properties is formed on the lower surface of the heat insulating layer 14. The heat insulating layer 14 and the shielding layer 15 are firmly fixed to the lower surface of the ceiling slab 7 by anchor bolts 16 protruding from the lower surface of the ceiling slab 7.
【００１８】従って、図示破線矢印に示すように通風管
１０の上部開口部から流れてきた高温（約８０℃）の冷
却空気が天井スラブ７の下面に達しても断熱層１４によ
ってその熱が天井スラブ７側に伝わり難くなって天井ス
ラブ７の熱劣化が効果的に防止される。また、収納管８
内の固化パッケージ６側から放射される放射線、特にγ
線が天井スラブ７の下面側に達しても、これが遮蔽層１
５によって効果的に遮蔽されて天井スラブ７内に達しな
いため、γ線による天井スラブ７内の発熱現象も同時に
防止されることになる。Accordingly, even if the high-temperature (about 80 ° C.) cooling air flowing from the upper opening of the ventilation pipe 10 reaches the lower surface of the ceiling slab 7 as shown by the broken line arrow in the drawing, the heat is transferred by the heat insulating layer 14 to the ceiling. It is difficult to transmit to the slab 7 side, and the thermal deterioration of the ceiling slab 7 is effectively prevented. In addition, storage tube 8
Radiation from the solidified package 6 side, especially γ
Even if the wire reaches the lower surface of the ceiling slab 7,
5 effectively blocks the ceiling slab 7 from reaching the inside of the ceiling slab 7, so that the heat generation phenomenon in the ceiling slab 7 due to γ-rays is also prevented at the same time.
【００１９】このように本発明は冷却空気等によって高
温に曝される天井スラブの下面に断熱層と遮蔽層を備え
たことにより、天井スラブ下面の温度上昇を抑えること
ができる。As described above, according to the present invention, since the heat insulating layer and the shielding layer are provided on the lower surface of the ceiling slab exposed to the high temperature by the cooling air or the like, the temperature rise on the lower surface of the ceiling slab can be suppressed.
【００２０】尚、本実施の形態では断熱層及び遮蔽層を
熱の集中する天井スラブの下面に形成する場合で説明し
たが、この断熱層及び遮蔽層は、天井スラブのみならず
貯蔵室を区画形成する側壁スラブ及び底部スラブの全面
に亘って形成するようにしても良い。In this embodiment, the case where the heat insulating layer and the shielding layer are formed on the lower surface of the ceiling slab where heat is concentrated has been described. However, the heat insulating layer and the shielding layer partition the storage room as well as the ceiling slab. It may be formed over the entire surface of the side wall slab and the bottom slab to be formed.
【００２１】[0021]
【発明の効果】以上要するに本発明によれば、冷却空気
や放射線による天井スラブ下面の温度上昇を容易に抑え
ることができるため、天井スラブの健全性を維持するこ
とができると同時に、熱劣化による耐久性の低下等の不
都合を未然に防止することができる。In summary, according to the present invention, the rise in the temperature of the lower surface of the ceiling slab due to cooling air or radiation can be easily suppressed, so that the soundness of the ceiling slab can be maintained, and at the same time, the temperature of the ceiling slab can be reduced. Problems such as a decrease in durability can be prevented beforehand.
【図１】本発明の実施の一形態を示す部分拡大図であ
る。FIG. 1 is a partially enlarged view showing an embodiment of the present invention.
【図２】従来の固化パッケージ貯蔵設備の構成を示す概
略図である。FIG. 2 is a schematic diagram showing a configuration of a conventional solidified package storage facility.
【図３】従来の固化パッケージ貯蔵設備の貯蔵室の一部
を示す部分拡大図である。FIG. 3 is a partially enlarged view showing a part of a storage room of a conventional solidified package storage facility.
１ 貯蔵棟 ２ 貯蔵室 ６ 固化パッケージ ７ 天井スラブ ８ 収納管 10 通風管 12 遮蔽プラグ 13 収納管蓋 14 断熱層 15 遮蔽層 DESCRIPTION OF SYMBOLS 1 Storage building 2 Storage room 6 Solidified package 7 Ceiling slab 8 Storage pipe 10 Ventilation pipe 12 Shield plug 13 Storage pipe lid 14 Heat insulation layer 15 Shield layer
Claims (2)
生する固化パッケージを収納した収納管を複数配置する
と共に、上記貯蔵室の底部側から天井側に冷却空気を流
してその収納管を空冷するようにした固化パッケージ貯
蔵装置において、上記貯蔵室の天井を区画する天井スラ
ブの下面に断熱層を形成すると共に、その断熱材層の下
面に上記収納管側から放射される放射線を遮蔽する遮蔽
層を形成したことを特徴とする固化パッケージ貯蔵装
置。1. A plurality of storage tubes accommodating a solidified package that generates high heat are arranged in a concrete storage room, and cooling air is flown from the bottom side to the ceiling side of the storage room to air-cool the storage tubes. In the solidified package storage device as described above, a heat insulating layer is formed on a lower surface of a ceiling slab that partitions the ceiling of the storage room, and a shielding layer that shields radiation radiated from the storage tube side on a lower surface of the heat insulating material layer. A solidified package storage device, characterized in that a solid package storage device is formed.
室の天井を区画する天井スラブを貫通するように、高熱
を発生する固化パッケージを収納した収納管を複数配置
すると共に、上記貯蔵室の底部側から天井側に冷却空気
を流してその収納管を空冷するようにした固化パッケー
ジ貯蔵装置において、上記天井スラブの下面に断熱層を
形成すると共に、その断熱材層の下面に上記収納管側か
ら放射される放射線を遮蔽する遮蔽層を形成し、さら
に、上記収納管の上部開口部を板厚が１０ｃｍ以上の炭
素鋼板からなる収納管蓋で塞いだことを特徴とする固化
パッケージ貯蔵装置。2. A plurality of storage tubes accommodating a solidified package that generates high heat are arranged in a concrete storage room so as to penetrate a ceiling slab that partitions a ceiling of the storage room, and a bottom portion of the storage room. In a solidified package storage device in which cooling air flows from the side to the ceiling side to air-cool the storage tube, a heat insulating layer is formed on the lower surface of the ceiling slab, and the lower surface of the heat insulating material layer is formed from the storage tube side. A solidified package storage device, wherein a shielding layer for shielding emitted radiation is formed, and an upper opening of the storage tube is closed with a storage tube lid made of a carbon steel plate having a thickness of 10 cm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25909796A JPH10104397A (en) | 1996-09-30 | 1996-09-30 | Device for storing solidified package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25909796A JPH10104397A (en) | 1996-09-30 | 1996-09-30 | Device for storing solidified package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10104397A true JPH10104397A (en) | 1998-04-24 |
Family
ID=17329287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25909796A Pending JPH10104397A (en) | 1996-09-30 | 1996-09-30 | Device for storing solidified package |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10104397A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083487A (en) * | 2011-10-06 | 2013-05-09 | Hitachi-Ge Nuclear Energy Ltd | Filter unit and exchange device for the same |
| JP2014055901A (en) * | 2012-09-13 | 2014-03-27 | Hitachi-Ge Nuclear Energy Ltd | Filter unit |
| CN109285614A (en) * | 2018-10-25 | 2019-01-29 | 中国核电工程有限公司 | A kind of enhancing high-level waste keeps in the arragement construction of facility ventilation shaft shielding properties |
-
1996
- 1996-09-30 JP JP25909796A patent/JPH10104397A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083487A (en) * | 2011-10-06 | 2013-05-09 | Hitachi-Ge Nuclear Energy Ltd | Filter unit and exchange device for the same |
| JP2014055901A (en) * | 2012-09-13 | 2014-03-27 | Hitachi-Ge Nuclear Energy Ltd | Filter unit |
| CN109285614A (en) * | 2018-10-25 | 2019-01-29 | 中国核电工程有限公司 | A kind of enhancing high-level waste keeps in the arragement construction of facility ventilation shaft shielding properties |
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