JPS6159292A - Rack for storage - Google Patents
Rack for storageInfo
- Publication number
- JPS6159292A JPS6159292A JP59181546A JP18154684A JPS6159292A JP S6159292 A JPS6159292 A JP S6159292A JP 59181546 A JP59181546 A JP 59181546A JP 18154684 A JP18154684 A JP 18154684A JP S6159292 A JPS6159292 A JP S6159292A
- Authority
- JP
- Japan
- Prior art keywords
- storage
- fuel
- rack
- lattice
- cross
- 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
Links
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
- Warehouses Or Storage Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の技術分野］
本発明は原子炉建屋内に設けた燃料貯蔵ブ・−ル内に、
燃料集合体、制御棒を貯蔵する際に使用する貯蔵用ラッ
クに係、る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a fuel storage tank provided in a nuclear reactor building.
This relates to storage racks used to store fuel assemblies and control rods.
［発明の技術的背景とその問題点］
沸騰水型原子炉（ＢＷＲ）の燃料集合体は、断面略正方
形状のチャンネルボックス内に多数の燃料棒を格子状に
配置して構成されている。また、隣接する４体の形成す
る十字状の間隙に挿抜される制御棒は、断面十字状のタ
イロッドの各突脚に深いＵ字状断面のシースを取付け、
各シース内に多数の中性子吸収棒を装填して構成されて
いる。[Technical Background of the Invention and Problems Therewith] A fuel assembly for a boiling water reactor (BWR) is constructed by arranging a large number of fuel rods in a lattice shape within a channel box having a substantially square cross section. In addition, the control rod that is inserted into and removed from the cross-shaped gap formed by the four adjacent bodies has a sheath with a deep U-shaped cross section attached to each protruding leg of a tie rod with a cross-shaped cross section.
It is constructed by loading a large number of neutron absorption rods into each sheath.
制御棒上端にはハンドルを兼ねた先端構造材が、また下
端には下端に円板状のスピードリミッタを有する下部ス
カートがそれぞれ設けである。The upper end of the control rod is provided with a tip structure that also serves as a handle, and the lower end is provided with a lower skirt that has a disc-shaped speed limiter at the lower end.
使用済の燃料集合体、使用済の制御棒は燃料貯蔵プール
内に長期間貯蔵されるが、従来はその貯蔵に際し次のよ
うな貯蔵用ラックが使用されている。すなわち、燃料集
合体用のラックとしては、角筒状で内部両側に断面長手
方向の水ギャップを隔てて、燃料集合体を１体穴係合さ
せる仕切りを有するものが使用され、制御棒用ラックと
しては、円板状のスピードリミッタが整列し互に接する
状態で収納し得る１ｇｉ面形状の筒状のものが使用され
ている。Spent fuel assemblies and spent control rods are stored in fuel storage pools for long periods of time, and conventionally, the following storage racks have been used to store them. That is, as a rack for fuel assemblies, a rack having a rectangular cylindrical shape and having partitions on both sides of the inside for engaging the fuel assemblies with holes with a water gap in the longitudinal direction of the cross section is used. As the speed limiter, a cylindrical one with a 1gi surface shape is used, which allows the disc-shaped speed limiters to be accommodated in a state where they are aligned and in contact with each other.
ところが、核燃料再処理がおくれでいるところから、燃
料貯蔵プールにより多くの使用済燃料集合体を貯蔵する
ことが必要となり、角筒状で内部を格子状に仕切って構
成した稠密型の燃料貯蔵用ラックが使用されるようにな
り、また１り御棒はプール壁面に設けた壁掛式貯蔵用ラ
ックが使用されるようになって来た。However, as nuclear fuel reprocessing has been delayed, it has become necessary to store more spent fuel assemblies in fuel storage pools. Racks have come into use, and wall-mounted storage racks mounted on pool walls have come into use.
ところが、稠密型の貯蔵用ラック内に収容された燃料集
合体を未臨界に保つためには、ラックの材料として比較
的高価な中性子吸収材を使用しなければならず、ラック
が高価となる。また、壁掛式の制御棒用の貯蔵用ラック
は、その下に燃料貯蔵用のラックを置くことができない
ので、それによりプールの有効床面積が減殺される。However, in order to maintain a fuel assembly housed in a dense storage rack in a subcritical state, a relatively expensive neutron absorbing material must be used as the rack material, making the rack expensive. Also, the wall-mounted control rod storage rack does not allow a fuel storage rack to be placed underneath it, thereby reducing the effective floor area of the pool.
［発明の目的］
本発明は上記の事情に基づきなされたもので、燃料集合
体を未臨界に保ち乍ら稠密に貯蔵し得、しかも安価で燃
料貯蔵プールの床面積を有効に利用し得る貯蔵用ラック
を得ることを目的としている。[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and provides a storage method that allows fuel assemblies to be stored densely while keeping them subcritical, is inexpensive, and can effectively utilize the floor space of a fuel storage pool. The purpose is to obtain a rack for use.
［発明の概要］
本発明の貯蔵用ラックは、角筒状のフレームと、このフ
レーム内を燃料集合体の断面積の２倍より大きな長方形
の第１の格子に区切る仕切板と、燃料集合体の断面積の
４倍より大ぎなの正方形の第２の格子に区切る仕切板と
、第１の格子内に２箇所配置された貯蔵ヂャンネルと、
前記第２の格子の各仕切板等に設けた間板支持具とを有
することを特徴とする。[Summary of the Invention] The storage rack of the present invention includes a rectangular cylindrical frame, a partition plate that divides the inside of the frame into a rectangular first lattice larger than twice the cross-sectional area of the fuel assembly, and a fuel assembly. a partition plate partitioning into a second square grid having a cross-sectional area larger than four times the cross-sectional area of the storage channel; and a storage channel disposed at two locations within the first grid;
The present invention is characterized in that it has a partition support provided on each partition plate of the second lattice.
［発明の実施例］
第１図、第２図において、断面長方形の筒状のフレーム
１内には、その短辺を３等分する位置に仕切り２．３が
設けてあり、仕切板２．３とフレーム１の側壁との間の
空間には長辺を１０等分する位置に、また仕切板２，３
間の空間には長辺を５等分する位置にそれぞれ仕切板４
．５および６が設けである。また、仕切板２，３の対向
する面には、それらとそれらに直交する仕切板４、フレ
ーム１の側板の形成する格子の辺の中央に位置して、先
端に円弧状凹溝を有する制御棒翼支持具７゜８が設けら
れている。また、仕切板６およびフレーム１の側板には
同様の制御棒翼支持具９，１０が設けられている。[Embodiment of the Invention] In FIGS. 1 and 2, a cylindrical frame 1 with a rectangular cross section is provided with a partition 2.3 at a position dividing the short side into three equal parts. In the space between 3 and the side wall of frame 1, partition plates 2 and 3 are installed at positions that divide the long side into 10 equal parts.
In the space between, partition plates 4 are installed at positions that divide the long side into 5 equal parts.
．． 5 and 6 are provided. Further, on the opposing surfaces of the partition plates 2 and 3, a control having an arcuate groove at the tip is located in the center of the side of the lattice formed by the side plates of the frame 1 and the partition plate 4 perpendicular to them. A rod wing support 7°8 is provided. Further, similar control rod wing supports 9 and 10 are provided on the partition plate 6 and the side plates of the frame 1.
さらに、フレーム１の一方の側板仕切板２、同４、フレ
ーム１の他の側板と仕切板３、同５の形成する細長い長
方形の格子内には、はぼ正方形断面の燃料貯蔵チャンネ
ル１１がそれぞれ設けである。なお、各燃料貯蔵チャン
ネル間には、仕切板２．３に平行な水ギャップが形成さ
れるよう間隙１２が設けられている。Further, within the elongated rectangular lattice formed by one side plate of the frame 1 and the partition plates 2 and 4, and the other side plate of the frame 1 and the partition plates 3 and 5, there are fuel storage channels 11 each having a substantially square cross section. It is a provision. Note that a gap 12 is provided between each fuel storage channel so that a water gap parallel to the partition plate 2.3 is formed.
また、第２図に示すように各燃料貯蔵チャンネル１１の
底部には燃料集合体の下端に係合させる受座１３が設け
である。さらに、フレーム１側板、仕切板２，３．６に
よって区切られた正方形の格子に対しては、これらの格
子へのＩＩＪｔｌｌＪ１１４の挿入後、制御棒のスピー
ドリミッタ１４ａに載置され上面に燃料集合体の下端を
係合させる受座・１５が４箇所用意されている。Further, as shown in FIG. 2, a seat 13 is provided at the bottom of each fuel storage channel 11 to engage with the lower end of the fuel assembly. Furthermore, for the square lattice divided by the frame 1 side plate and the partition plates 2 and 3.6, after inserting the IIJtllJ114 into these lattices, it is placed on the speed limiter 14a of the control rod and the fuel assembly is placed on the upper surface. There are four catches 15 that engage the lower end of the handle.
上記構成の本発明貯蔵用ラックにおいて、隣接するラッ
ク内の貯蔵燃料集合体との臨界を避けるため、フレーム
１は中性子吸収材により構成しておく。In the storage rack of the present invention having the above structure, the frame 1 is made of a neutron absorbing material in order to avoid criticality with the stored fuel assemblies in adjacent racks.
燃料集合体および制御棒の貯蔵は第２図に示す如くして
行う。すなわち、燃料貯蔵プール内に本発明ラックを浸
漬し、各燃料貯蔵チャンネル１１内には燃料集合体１６
を挿入し、仕切板２，３゜６等により形成された格子に
はまず制御棒１４を挿入し、翼板を翼板支持具７．８．
９．１０．に支持させ、ここでスピードリミッタ１４ａ
上に、支持座１５を各翼板間隙角に配置して載置し、こ
れらに燃料集合体１６を支持させる。Fuel assemblies and control rods are stored as shown in FIG. That is, the rack of the present invention is immersed in a fuel storage pool, and a fuel assembly 16 is placed in each fuel storage channel 11.
, the control rod 14 is first inserted into the lattice formed by the partition plates 2, 3, 6, etc., and the blade is attached to the blade support 7.8.
9.10. The speed limiter 14a is supported by the speed limiter 14a.
Support seats 15 are placed on top, arranged at each blade gap angle, and the fuel assembly 16 is supported by these seats.
上記のようにして貯蔵すれば、貯蔵チャンネル１１内に
収容された燃料集合体間およびぞれに隣接する燃料集合
体間には間隙１２が形成され、また、仕切板２，３間に
貯蔵された壓科集合体には、４体に１本の制御棒が配置
されているので、比較的せまい所に燃料集合体を貯蔵し
ても臨界に達することはない。When stored as described above, gaps 12 are formed between the fuel assemblies housed in the storage channel 11 and between fuel assemblies adjacent to each other, and fuel assemblies are stored between the partition plates 2 and 3. Since one control rod is placed in every four fuel assemblies, even if the fuel assemblies are stored in a relatively narrow place, they will not reach criticality.
なお、本発明は上記実施例に限定されない。上記実施例
では、燃料集合体１２体に１本の割合で制御棒を配置し
て貯蔵しているが、これは一般のＢＷＲの燃料集合体と
制御棒の割合に従ったものであって、その割合は任意に
選定し得ることはもちろんである。Note that the present invention is not limited to the above embodiments. In the above embodiment, one control rod is arranged and stored for every 12 fuel assemblies, but this is in accordance with the ratio of fuel assemblies to control rods in a general BWR. Of course, the ratio can be arbitrarily selected.
［発明の効果］
本発明によれば、燃料集合体と制御棒とを一括して貯蔵
し得るので、貯蔵スペースを削減できる。[Effects of the Invention] According to the present invention, fuel assemblies and control rods can be stored together, so storage space can be reduced.
また、制御棒が混在して貯蔵されるため、臨界安全性が
向上される。また、臨界安全性が従来の貯蔵ラックと同
程度でよ１すれば、従来よりも稠密な貯蔵ラックを構成
することができるので、燃料プールの小型化、原子炉建
屋の小型化をはかることができる。さらに、貯蔵チャン
ネルを比較的高価な中性子吸収材を含む材料により構成
する必要はなく、経済的な効果も大である。Additionally, since control rods are stored together, criticality safety is improved. In addition, if the criticality safety is at the same level as conventional storage racks, it is possible to construct storage racks that are more dense than conventional storage racks, making it possible to downsize fuel pools and reactor buildings. can. Furthermore, it is not necessary to construct the storage channel from a material containing a relatively expensive neutron absorbing material, which has a large economical effect.
第１図は本発明一実施例の平面図、第２図はその切断正
面図である。
１・・・フレーム
２．３．４．５・・・仕切板
７．８．９．１０・・・翼板支持具
１１・・・貯蔵チャンネル １２′・・・間隙１３．１
５・・・支持座 １４・・・制御棒１６・・・燃料集
合体
出 願 代 理 人FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a cutaway front view thereof. 1... Frame 2.3.4.5... Partition plate 7.8.9.10... Wing plate support 11... Storage channel 12'... Gap 13.1
5...Support seat 14...Control rod 16...Fuel assembly application agent
Claims (1)
面積の２倍より大きな長方形の第１の格子に区切る仕切
板と、燃料集合体の断面積の４倍より大きなの正方形の
第２の格子に区切る仕切板と、第１の格子内に２箇所配
置された貯蔵チャンネルと、前記第２の格子の各仕切板
等に設けた翼板支持具とを有することを特徴とする貯蔵
用ラック。A rectangular cylindrical frame, a partition plate that divides the inside of the frame into a rectangular first lattice larger than twice the cross-sectional area of the fuel assembly, and a square second grid larger than four times the cross-sectional area of the fuel assembly. A storage device characterized by having a partition plate dividing into a lattice, storage channels arranged at two locations in the first lattice, and wing plate supports provided on each partition plate, etc. of the second lattice. rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181546A JPS6159292A (en) | 1984-08-30 | 1984-08-30 | Rack for storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181546A JPS6159292A (en) | 1984-08-30 | 1984-08-30 | Rack for storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6159292A true JPS6159292A (en) | 1986-03-26 |
Family
ID=16102672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59181546A Pending JPS6159292A (en) | 1984-08-30 | 1984-08-30 | Rack for storage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6159292A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312406A (en) * | 1987-06-12 | 1988-12-20 | 東亜建設工業株式会社 | Method and apparatus for throwing and leveling waste stones |
| JPS63312422A (en) * | 1987-06-12 | 1988-12-20 | Toa Harbor Works Co Ltd | Method and apparatus for covering of sand on water bottom |
| WO1997000521A1 (en) * | 1995-06-14 | 1997-01-03 | Siemens Aktiengesellschaft | Storage holder and storage rack for compact storage of fuel elements and control rods, and a method of storing fuel elements and control rods from a nuclear power plant |
| US5914994A (en) * | 1995-06-14 | 1999-06-22 | Siemens Aktiengesellschaft | Storage basket and method for compact storage of fuel elements and control rods |
| WO2000026921A3 (en) * | 1998-11-04 | 2000-12-21 | Reynolds Metals Co | Rodlet absorbing members for use with spent fuel |
| JP2013246014A (en) * | 2012-05-25 | 2013-12-09 | Hitachi-Ge Nuclear Energy Ltd | Fuel storage rack |
-
1984
- 1984-08-30 JP JP59181546A patent/JPS6159292A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312406A (en) * | 1987-06-12 | 1988-12-20 | 東亜建設工業株式会社 | Method and apparatus for throwing and leveling waste stones |
| JPS63312422A (en) * | 1987-06-12 | 1988-12-20 | Toa Harbor Works Co Ltd | Method and apparatus for covering of sand on water bottom |
| WO1997000521A1 (en) * | 1995-06-14 | 1997-01-03 | Siemens Aktiengesellschaft | Storage holder and storage rack for compact storage of fuel elements and control rods, and a method of storing fuel elements and control rods from a nuclear power plant |
| US5914994A (en) * | 1995-06-14 | 1999-06-22 | Siemens Aktiengesellschaft | Storage basket and method for compact storage of fuel elements and control rods |
| WO2000026921A3 (en) * | 1998-11-04 | 2000-12-21 | Reynolds Metals Co | Rodlet absorbing members for use with spent fuel |
| JP2013246014A (en) * | 2012-05-25 | 2013-12-09 | Hitachi-Ge Nuclear Energy Ltd | Fuel storage rack |
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