JPH0458920B2 - - Google Patents
Info
- Publication number
- JPH0458920B2 JPH0458920B2 JP59279950A JP27995084A JPH0458920B2 JP H0458920 B2 JPH0458920 B2 JP H0458920B2 JP 59279950 A JP59279950 A JP 59279950A JP 27995084 A JP27995084 A JP 27995084A JP H0458920 B2 JPH0458920 B2 JP H0458920B2
- Authority
- JP
- Japan
- Prior art keywords
- lattice
- cask
- floor
- silo
- building
- 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.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000012857 radioactive material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000002915 spent fuel radioactive waste Substances 0.000 description 4
- 239000002927 high level radioactive waste Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、原子力発電所から発生する使用済燃
料やその燃料を再処理した結果発生する高レベル
放射性廃棄物等を保管する高レベル放射性物質貯
蔵施設に関する。Detailed Description of the Invention "Industrial Application Field" The present invention is applicable to high-level radioactive materials that store spent fuel generated from nuclear power plants and high-level radioactive waste generated as a result of reprocessing that fuel. Regarding storage facilities.
上記使用済燃料、高レベル放射性廃棄物等は、
かなりの放射能を有するため、プールでの水中保
管やキヤスク（遮蔽密封容器）に入れて保管され
るが、本発明は、特に後者に属する。 The above spent fuel, high-level radioactive waste, etc.
Because it has considerable radioactivity, it is stored underwater in a pool or in a cask (shielded and sealed container), and the present invention particularly belongs to the latter category.
「従来の技術」
キヤスクは、鋼製の大型容器であり、通常、外
径1.5〜2.5m、高さ５〜6m、重さ90〜130ton程度
のものであつて、５〜10tonの使用済燃料等を収
容する。収容された使用済燃料等は、20〜50kw
程度の崩壊熱を発生させ、その熱と放射線の一部
がキヤスクの外部に現れる。従つて、キヤスクの
保管施設には、キヤスクの冷却と放射線遮蔽が不
可欠である。``Prior art'' A cask is a large steel container, typically 1.5 to 2.5 m in outer diameter, 5 to 6 m in height, and 90 to 130 tons in weight, and can hold 5 to 10 tons of spent fuel. etc. The stored spent fuel, etc. has a capacity of 20 to 50kw.
A certain amount of decay heat is generated, and some of that heat and radiation appears outside the cask. Therefore, cask cooling and radiation shielding are essential for cask storage facilities.
ところで、従来のキヤスクの保管施設には、大
径の天井クレーンを備えたコンクリート建屋が用
いられ、キヤスクは、床上に起立又は横置き状態
で配列され、建屋換気による強制空冷方式（排気
若しくは給気フアン）又は自然換気で冷却される
ようになつている（例えば特開昭58−63895号公
報）。 By the way, conventional cask storage facilities use concrete buildings equipped with large-diameter overhead cranes, and casks are arranged either upright or horizontally on the floor, and the buildings are ventilated using forced air cooling (exhaust or air supply). (e.g., Japanese Patent Laid-Open No. 1983-63895).
「発明が解決しようとする課題」
しかし、従来のキヤスクの保管施設の場合、キ
ヤスクからの放射線に対して建屋構造体の一部で
ある貯蔵室周壁又は外壁を厚いコンクリート壁と
して放射線遮蔽性能をもたせる必要があり、且
つ、多大な空間を要し、地震時にキヤスクが転倒
し移動するため施設耐震上に問題があつた。これ
に加えて、建屋換気による空冷方式のため、放射
線遮蔽のための複雑な迷路形式をとる必要があ
り、施設建設費の経済性や建設工期上に難があつ
た。``Problem to be solved by the invention'' However, in the case of conventional cask storage facilities, the storage room peripheral wall or outer wall, which is part of the building structure, is made of thick concrete to provide radiation shielding performance against radiation from the cask. This was necessary and required a large amount of space, and the casks would topple over and move during an earthquake, causing problems in terms of earthquake resistance of the facility. In addition, since the building was air-cooled by ventilation, it was necessary to construct a complex labyrinth for radiation shielding, which caused problems in terms of economical construction costs and construction schedule.
本発明は、斯る従来の問題点、難点を除去しよ
うとするものである。 The present invention attempts to eliminate these conventional problems and difficulties.
「課題を解決するための手段」
本発明は、コンクリート建屋１の基礎床とし
て、格子状地中梁１１と該格子状地中梁の下端レ
ベルに適合する床版１２とから成る逆梁格子版構
造で、その格子状地中梁１１の間の各格子目部分
にそれぞれ上面開放の空室１１ａ…を形成した基
礎床を設け、また、各空室１１ａ…内の床版１２
上にそれぞれキヤスクＡを遊挿させる筒状で且つ
放射線遮蔽性能を備えたサイロ２…を起立させ、
各サイロ２…には、空室内下端部に適数の空気流
入口２１…を設けて上方へと抜ける自然通風手段
を講じたことを特徴とする。"Means for Solving the Problems" The present invention provides an inverted beam lattice plate, which is used as a foundation floor of a concrete building 1, and is composed of a lattice-shaped underground beam 11 and a floor slab 12 that fits the lower end level of the lattice-shaped underground beam. In this structure, a foundation floor is provided in each lattice part between the lattice-shaped underground beams 11, and a foundation floor is provided with a cavity 11a... with an open top surface, and a floor slab 12 in each cavity 11a...
Erecting cylindrical silos 2 with radiation shielding performance into which the casks A are loosely inserted,
Each silo 2 is characterized in that an appropriate number of air inlets 21 are provided at the lower end of the chamber to provide natural ventilation for upward movement.
「作用」
如上の構成であり、各サイロ２…には、キヤス
クＡ…を１個宛遊挿する。"Operation" The configuration is as shown above, and one cask A is loosely inserted into each silo 2.
斯様に収納されると、キヤスクＡ…は、発熱に
より周囲に上昇気流を生じさせて、サイロ２…内
に煙突に見られる自然通風が発生する。また、こ
れが基になつて建屋１の内外に対流作用が生ず
る。つまり、外気が建屋１の空気取入口１５…か
ら建屋内に流入し、格子状地中梁１１の間の空室
１１ａ…からサイロ下端部の空気流入口２１…を
経て、サイロ２…内を高速度で通り抜け、更に、
上昇して排気口１７から建屋１外へと排出され
る。従つて、サイロ２…内のキヤスクＡ…は、効
率よく自然空冷される。 When stored in this manner, the cask A generates an upward air current around it due to heat generation, and natural ventilation similar to that found in a chimney is generated within the silo 2. Also, based on this, convection occurs inside and outside the building 1. In other words, outside air flows into the building from the air intake ports 15 of the building 1, passes through the air inlets 21 at the lower end of the silo from the empty spaces 11a between the lattice-shaped underground beams 11, and flows into the silos 2. Pass through at high speed, and
It rises and is discharged from the exhaust port 17 to the outside of the building 1. Therefore, the casks A in the silos 2 are efficiently cooled by natural air.
キヤスクＡ…から放出される放射線は、前述の
ように一部分であるが、該放射線は、主として直
進性の強いγ線である。この放射線は、サイロ２
…に到達する熱に変り、サイロの周辺へはほとん
ど洩れ出ない。 Although only a portion of the radiation is emitted from the cask A as described above, this radiation is mainly gamma rays that travel in a straight line. This radiation is silo 2
It turns into heat that reaches... and hardly leaks out to the surrounding area of the silo.
なお、サイロ２…は、キヤスクＡ…からの輻射
熱でも温度上昇するが、これは、建屋１内の対流
作用を助長する。 Note that the temperature of the silos 2 rises due to the radiant heat from the casks A, which promotes convection within the building 1.
また、サイロ下端部の空気流入口２１…は、空
室１１ａ……内で開口するので、該空気流入口２
１…からサイロ周辺へ放射線が洩れることはな
い。 In addition, since the air inlet 21 at the lower end of the silo opens inside the empty chamber 11a, the air inlet 21...
No radiation will leak from 1 to the area around the silo.
「実施例」 図面は、本発明に係る実施例を示している。"Example" The drawings show embodiments according to the invention.
図において、１は、コンクリート建屋、２…
は、該建屋のコンクリート基礎床上に配列した放
射線遮蔽性能を備えた複数の円筒形のサイロ、３
は、建屋内に設けた門型クレーン、４は、キヤス
ク運搬車であり、Ａ…は、キヤスクである。 In the figure, 1 is a concrete building, 2...
3 is a plurality of cylindrical silos with radiation shielding performance arranged on the concrete foundation floor of the building;
is a gate-type crane installed in the building, 4 is a cask transport vehicle, and A... is a cask.
コンクリート建屋１は、地面を少し掘り下げて
格子状地中梁１１を設け（第６図）、該格子状地
中梁の下端レベルに適合させて厚い床版１２を設
け、つまり、逆梁格子版構造で格子状地中梁１１
の間（各格子目部分）にそれぞれ上面開放の空室
１１ａ…を形成したコンクリート基礎床を設け、
該基礎床の中央部に縦貫させて通路用の上部床１
３を設けると共に、該上部床に対応させて外壁１
４に出入口１８を設け、外壁１４の下部適所に適
数の空気取入口１５…を配し、屋根１６中央部に
迷路形式の簡単な排気口１７を設けている。な
お、排気口部分は、放射線遮蔽のため厚くすると
よい。また、該部に排気モニターを装備させると
よい。 In the concrete building 1, a lattice-shaped underground beam 11 is installed by digging a little into the ground (Fig. 6), and a thick floor slab 12 is installed to match the lower end level of the lattice-shaped underground beam, that is, a reverse beam lattice slab. Structure with lattice underground beams 11
A concrete foundation floor is provided between the spaces (each lattice part) with open spaces 11a on the top, respectively.
An upper floor 1 for a passage runs vertically through the center of the foundation floor.
3, and an outer wall 1 corresponding to the upper floor.
4 is provided with an entrance/exit 18, an appropriate number of air intake ports 15 are arranged at appropriate positions in the lower part of the outer wall 14, and a simple maze-shaped exhaust port 17 is provided in the center of the roof 16. Note that the exhaust port portion is preferably thick for radiation shielding. Additionally, it is recommended that this section be equipped with an exhaust monitor.
第２図中、１９は、建屋内に設けた控室であ
る。 In Fig. 2, 19 is a waiting room provided within the building.
また、３１は、門型クレーン３のレールであ
る。 Further, 31 is a rail of the gate type crane 3.
サイロ２…は、コンクリートで適宜厚さの円筒
形に形成して、上記各空室１１ａ…内にてそれぞ
れ床版１２上から一体に起立させ、各下端部に、
空室１１ａ…内に位置させて複数の空気流入口２
１…を形成し、且つ、各上端部に小さな内向きフ
ランジ２２…を形成している。なお、サイロは円
筒形に限るものではなく、多角形その他適宜であ
る。 The silos 2 are formed of concrete into a cylindrical shape with an appropriate thickness, and are erected integrally from above the floor slabs 12 in each of the above-mentioned empty rooms 11a.
A plurality of air inlets 2 are located within the empty chamber 11a...
1..., and small inward flanges 22... are formed at each upper end. Note that the silo is not limited to a cylindrical shape, but may be polygonal or other appropriate shape.
上記各空室１１ａ…の上部には、それぞれサイ
ロの周りでグレーチング１１ｂ…を設けている。 A grating 11b is provided above each of the empty chambers 11a around the silo.
如上の構成であり、キヤスクＡ…の収納に当た
つては、キヤスクＡを１個宛キヤスク運搬車４に
より建屋１内に搬入し、門型クレーン３により起
立状態でサイロ２…内へと挿入し、床版１２上に
載置する。 The structure is as shown above, and when storing casks A..., each cask A is carried into building 1 by cask transport vehicle 4, and inserted into silo 2... in an upright position by gate type crane 3. and place it on the floor slab 12.
「発明の効果」
本発明によれば、コンクリート建屋１の基礎床
を逆梁格子版構造として、その格子状地中梁１１
の間の各格子目部分にそれぞれ上面開放の空室１
１ａ…を形成し、各空室１１ａ…内の床版１２上
にそれぞれ筒状で且つ放射線遮蔽性能を備えたサ
イロ２…を起立させ、各サイロの空室内下端部に
適数の空気流入口２１…を設けて上方へと抜ける
自然通風手段を講じ、而して、各サイロ２…にキ
ヤスクＡ…を１個宛遊挿させるようにしているの
で、サイロ２…によりキヤスクＡ…から放出され
る放射線を十分に阻止できて、放射線遮蔽性能を
向上させることができ、従つて、建屋１は、外壁
１４等を薄い一般的なものにでき、しかも、建屋
１に空冷のための複雑な迷路形式をとる必要がな
くて、大幅に簡素化でき、また、逆梁格子版構造
の基礎床によりサイロ２…の上端を低くおさえる
ことができて、建屋の高さを低くでき、建屋１の
全体構造をコンパクトにでき、建設費、建設工期
を大幅に低減できる。"Effects of the Invention" According to the present invention, the foundation floor of the concrete building 1 has a reverse beam lattice structure, and the lattice-shaped underground beams 11
There is a vacant room 1 with an open top in each lattice part between
1a... are formed, and cylindrical silos 2... each having a radiation shielding performance are erected on the floor slab 12 in each empty chamber 11a..., and an appropriate number of air inlets are installed at the lower end of the empty chamber of each silo. 21... is provided to provide a means for natural ventilation to pass upward, and one cask A... is loosely inserted into each silo 2..., so that the air is discharged from the cask A... by the silo 2... Therefore, the building 1 can have the outer wall 14, etc., made of a thin and general type, and the building 1 has a complicated labyrinth for air cooling. There is no need to take a formal structure, which can be greatly simplified, and the foundation floor of the inverted beam lattice structure allows the upper end of silo 2 to be kept low, reducing the height of the building and reducing the overall height of building 1. The structure can be made compact, significantly reducing construction costs and construction time.
更に、サイロ２…は、遊挿したキヤスクＡ…の
発熱により煙突に見られる高速度の自然通風を生
じさせるので、収納したキヤスクＡ…を効率よく
自然空冷でき、強制冷却手段を必要としない。 Furthermore, the silo 2 generates high-velocity natural ventilation as seen in a chimney due to the heat generated by the loosely inserted cask A, so the stored cask A can be efficiently cooled naturally and no forced cooling means is required.
而して、サイロ２…は、キヤスクＡ…の転倒を
阻止するので、施設耐震上の問題点を解決でき
る。 Since the silos 2 prevent the casks A from toppling over, it is possible to solve the earthquake resistance problem of the facility.
図面は、本発明の実施例で、第１図は、截断正
面図、第２図は、截断平面図、第３図は、第１図
の要部拡大断面図、第４図は、第３図−線の
断面図、第５図は、第３図−線の断面図、第
６図は、他部の截断平面図である。
１……コンクリート建屋、２……サイロ、３…
…門型クレーン、４……キヤスク運搬車、１１…
…格子状地中梁、１１ａ……空室、１１ｂ……グ
レーチング、１２……床版、１３……上部床、１
４……外壁、１５……空気取入口、１６……屋
根、１７……排気口、１８……出入口、１９……
控室、２１……空気流入口、２２……内向きフラ
ンジ、３１……レール、Ａ……キヤスク。
The drawings show embodiments of the present invention; FIG. 1 is a cutaway front view, FIG. 2 is a cutaway plan view, FIG. 3 is an enlarged sectional view of the main part of FIG. 1, and FIG. 5 is a sectional view taken along the line in FIG. 3, and FIG. 6 is a cutaway plan view of other parts. 1... Concrete building, 2... Silo, 3...
...Portal crane, 4...Cask carrier, 11...
...Lattice underground beam, 11a...Vacant room, 11b...Grating, 12...Floor slab, 13...Upper floor, 1
4...Outer wall, 15...Air intake, 16...Roof, 17...Exhaust port, 18...Entrance/exit, 19...
Waiting room, 21...Air inlet, 22...Inward flange, 31...Rail, A...Cask.
Claims (1)
地中梁１１と該格子状地中梁の下端レベルに適合
する床版１２とから成る逆梁格子版構造で、その
格子状地中梁１１の間の各格子目部分にそれぞれ
上面開放の空室１１ａ…を形成した基礎床を設
け、また、各空室１１ａ…内の床版１２上にそれ
ぞれキヤスクＡを遊挿させる筒状で且つ放射線遮
蔽性能を備えたサイロ２…を起立させ、各サイロ
２…には、空室内下端部に適数の空気流入口２１
…を設けて上方へと抜ける自然通風手段を講じた
ことを特徴とする高レベル放射性物質貯蔵施設。1 The foundation floor of the concrete building 1 is a reverse beam lattice structure consisting of a lattice underground beam 11 and a floor slab 12 that fits the lower end level of the lattice underground beam 11. A foundation floor is provided in which a hollow chamber 11a with an open top is formed in each lattice part of the lattice part, and the base floor has a cylindrical shape and radiation shielding performance, and the cask A is loosely inserted onto the floor slab 12 in each of the hollow chambers 11a. Each silo 2... has an appropriate number of air inlets 21 at the lower end of the chamber.
A high-level radioactive material storage facility characterized by having ... installed to provide natural ventilation upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59279950A JPS61158570A (en) | 1984-12-28 | 1984-12-28 | Facility for storing highly radioactive substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59279950A JPS61158570A (en) | 1984-12-28 | 1984-12-28 | Facility for storing highly radioactive substance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61158570A JPS61158570A (en) | 1986-07-18 |
| JPH0458920B2 true JPH0458920B2 (en) | 1992-09-18 |
Family
ID=17618179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59279950A Granted JPS61158570A (en) | 1984-12-28 | 1984-12-28 | Facility for storing highly radioactive substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61158570A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505431A (en) * | 2018-10-15 | 2019-03-22 | 中国核电工程有限公司 | A kind of novel fast reactor fuel plant arragement construction |
| JP7123019B2 (en) * | 2019-08-23 | 2022-08-22 | 日立Ｇｅニュークリア・エナジー株式会社 | storage facility |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5716400A (en) * | 1980-03-27 | 1982-01-27 | Gen Puuru Re Tekuniku Nuubueru | Shielding material for packing radioactive effluent |
| JPS576100B2 (en) * | 1975-10-01 | 1982-02-03 | ||
| JPS5863895A (en) * | 1981-10-12 | 1983-04-15 | 三菱マテリアル株式会社 | Dry type storage method of radioactive material and the like |
| JPS58135496A (en) * | 1981-11-06 | 1983-08-12 | ドイツチエ・ゲゼルシヤフト・フユ−ル・ヴイ−ダ−アウフアルバイツンク・フオン・ケルンブレンシユトツフエン・ミツト・ベシユレンクテル・ハフツング | Concrete protection casing for storing nuclear fuel element container |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042400Y2 (en) * | 1980-06-11 | 1985-12-26 | 日立造船株式会社 | Cask storage facility |
-
1984
- 1984-12-28 JP JP59279950A patent/JPS61158570A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576100B2 (en) * | 1975-10-01 | 1982-02-03 | ||
| JPS5716400A (en) * | 1980-03-27 | 1982-01-27 | Gen Puuru Re Tekuniku Nuubueru | Shielding material for packing radioactive effluent |
| JPS5863895A (en) * | 1981-10-12 | 1983-04-15 | 三菱マテリアル株式会社 | Dry type storage method of radioactive material and the like |
| JPS58135496A (en) * | 1981-11-06 | 1983-08-12 | ドイツチエ・ゲゼルシヤフト・フユ−ル・ヴイ−ダ−アウフアルバイツンク・フオン・ケルンブレンシユトツフエン・ミツト・ベシユレンクテル・ハフツング | Concrete protection casing for storing nuclear fuel element container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61158570A (en) | 1986-07-18 |
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