JP3141491B2 - Spent fuel storage rack - Google Patents
Spent fuel storage rackInfo
- Publication number
- JP3141491B2 JP3141491B2 JP04045277A JP4527792A JP3141491B2 JP 3141491 B2 JP3141491 B2 JP 3141491B2 JP 04045277 A JP04045277 A JP 04045277A JP 4527792 A JP4527792 A JP 4527792A JP 3141491 B2 JP3141491 B2 JP 3141491B2
- Authority
- JP
- Japan
- Prior art keywords
- spent fuel
- fuel storage
- joining member
- storage rack
- notch
- 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
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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、原子力発電所で発生す
る使用済燃料を使用済燃料プール内で所定の間隔を保
ち、かつ直立状態で整列保持するための使用済燃料用貯
蔵設備に係り、特に、使用済燃料を高密度に貯蔵するの
に好適な使用済燃料貯蔵ラックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spent fuel storage facility for keeping spent fuel generated in a nuclear power plant at a predetermined interval in a spent fuel pool and in an upright state. In particular, the present invention relates to a spent fuel storage rack suitable for storing spent fuel at a high density.
【０００２】[0002]
【従来の技術】現在、原子力発電所で発生する使用済燃
料は、原子炉建屋内の使用済燃料貯蔵プール内に設置さ
れた使用済燃料貯蔵ラックで所定の間隔を保ち、かつ、
直立状態で整列保持されているが、近年、原子炉建屋内
の使用済燃料貯蔵プールの貯蔵容量増強が望まれてお
り、使用済燃料貯蔵プールの燃料貯蔵容量を従来より大
きくする必要があった。しかし、使用済燃料貯蔵プール
はその形状変更が困難であるため、より効率的な使用済
燃料貯蔵方法が望まれていた。2. Description of the Related Art At present, spent fuel generated in a nuclear power plant is maintained at a predetermined interval by a spent fuel storage rack installed in a spent fuel storage pool in a reactor building, and
Although it is kept aligned in an upright state, in recent years, it has been desired to increase the storage capacity of the spent fuel storage pool in the reactor building, and it was necessary to increase the fuel storage capacity of the spent fuel storage pool compared to the past. . However, since it is difficult to change the shape of the spent fuel storage pool, a more efficient spent fuel storage method has been desired.
【０００３】この方策として従来技術では、例えば、特
開平1−280296 号公報のような使用済燃料貯蔵ラックが
ある。As a measure for this, in the prior art, for example, there is a spent fuel storage rack as disclosed in Japanese Patent Application Laid-Open No. 1-280296.
【０００４】図６に、特開平1−280296 号公報に記載の
従来技術による使用済燃料貯蔵ラックの接合用部材９を
用いた角筒体接合部を、図７に、同従来技術による接合
用部材９の一例を示す斜視図を示す。FIG. 6 shows a conventional cylindrical joint using a joining member 9 for a spent fuel storage rack disclosed in Japanese Patent Application Laid-Open No. 1-280296, and FIG. FIG. 2 is a perspective view showing an example of a member 9.
【０００５】本従来技術による使用済燃料貯蔵ラックで
は、隣接する角筒体１の各コーナ部間に、単なる切欠き
部１０を設けた接合用部材９を挿入，介在させ、その切
欠き部１０全てに溶着金属５を充填することにより角筒
体相互を固定していたため、使用済燃料貯蔵ラックの組
立溶接時の溶着金属量が多く、溶接作業時間も多くかか
り、ラック全体の溶接熱変形も大きいなどの問題があっ
た。[0005] In the spent fuel storage rack according to the prior art, a joining member 9 having a simple notch 10 is inserted and interposed between the corners of the adjacent rectangular cylinder 1, and the notch 10 is provided. Since the rectangular cylinders were fixed to each other by filling all with the welding metal 5, the amount of the welding metal at the time of assembling and welding the spent fuel storage rack was large, the welding time was long, and the welding heat deformation of the entire rack was reduced. There was a problem such as large.
【０００６】[0006]
【発明が解決しようとする課題】上記従来技術では、隣
接する角筒体の各コーナ部間に、単なる切欠き部を設け
た接合用部材を挿入，介在させ、その切欠き部全てに溶
着金属を充填することにより角筒体相互を固定していた
ため、使用済燃料貯蔵ラックの組立溶接時の溶着金属量
が多く、溶接作業時間も多くかかり、ラック全体の溶接
熱変形も大きいなどの問題があった。In the above prior art, a joining member provided with a mere notch is inserted and interposed between the corners of adjacent rectangular cylinders, and a weld metal is formed in all the notches. Since the rectangular cylinders were fixed to each other by filling with, the amount of metal deposited when assembling and welding the spent fuel storage rack, the welding time was long, and the welding heat deformation of the entire rack was large. there were.
【０００７】本発明の目的は、溶接作業時間を短縮で
き、ラック全体の溶接熱変形を低減できる使用済燃料貯
蔵ラックを提供することにある。An object of the present invention is to reduce welding time.
Fuel storage to reduce welding heat deformation of the entire rack
To provide storage racks .
【０００８】[0008]
【課題を解決するための手段】上記目的は、使用済燃料
貯蔵ラックにおいて、接合用部材が、断面形状が正三角
形または台形の盛り上げ部を切欠き部の底部に設けるこ
とによって達成される。 Above object In order to achieve the above, in the spent fuel storage rack for use, bonding members, the cross-sectional shape positive triangular
A raised part of a trapezoidal or trapezoidal shape should be provided at the bottom of the notch.
And is achieved by:
【０００９】[0009]
【作用】請求項１における接合用部材は、角筒体のコー
ナ部間に介在され、切欠き部に溶着金属を充填する場合
に、その量を減らすように作用する。これにより、使用
済燃料貯蔵ラック組立て時における溶接の作業時間を低
減し、ラックの溶接熱変形を低減できる。SUMMARY OF] connecting member in the claims 1 is Zaisa through between corners of the square tubular body, when filling the deposited metal to the notch serves to reduce the amount. This reduces the working time of the welding at the spent fuel storage rack assembly, Ru can be reduced welding heat deformation of the rack.
【００１０】接合用部材が、断面形状が正三角形の盛り
上げ部を切欠き部の底部に設けることにより、溶接脚長
は従来の接合用部材の場合と同様となるように作用す
る。これにより、充填する溶着金属量を低減させても、
従来の接合用部材と同様の強度を得ることが可能とな
る。[0010] The joining member has a regular triangular cross section.
By providing the raised portion at the bottom of the notch , the welding leg length acts in the same manner as in the case of the conventional joining member. As a result, even if the amount of deposited metal to be filled is reduced,
It is possible to obtain the same strength as a conventional joining member.
【００１１】請求項２では、接合用部材が、断面形状が
台形の盛り上げ部を切欠き部の底部に設けていることに
より、接合用部材の横幅が大きくなった場合に山形に盛
り上げ部の頂部が切欠き部が位置する側における接合用
部材の側面よりも突出することを防止できる。これによ
り、横幅の大きい接合用部材においても、断面形状が正
三角形の盛り上げ部を切欠き部の底部に設けている接合
用部材と同様の効果を得ることが可能となる。According to the second aspect , the joining member has a sectional shape.
By providing the trapezoidal raised portion on the bottom of the notch, the side where the apex notch is positioned Sheng <br/> Riue up part a mountain when the width of the connecting member is increased For joining
It can be prevented Rukoto protruding from the side surface of the member. As a result, the cross-sectional shape of the joining member having a large width is correct.
The same effect as that of the joining member in which the triangular raised portion is provided at the bottom of the notch can be obtained.
【００１２】[0012]
【実施例】現在、原子力発電所で発生する使用済燃料
は、原子炉建屋内の使用済燃料貯蔵プール内で貯蔵・保
管されているが、近年この使用済燃料貯蔵プールの貯蔵
容量増強が望まれている。しかし、使用済燃料貯蔵プー
ルはその形状変更が困難であるため、より効率的な使用
済燃料貯蔵の必要があり、その方法としては、角筒体の
コーナ部肉厚が角筒体を構成する他の壁厚と実質的に等
しくなるような曲率半径のコーナ部を有する複数個の角
筒体を、角筒体の外壁面間距離が角筒体の内壁面間距離
と実質的に等しくなる様に配置することで、幾何学的に
最も高密度化が可能な市松模様状に配置とし、角筒体の
各コーナ部間に、その長手方向の一部に切欠き部を設け
た接合用部材を挿入，介在させ、前記切欠き部に溶接に
より溶着金属を充填することで角筒体相互を固定するよ
うな使用済燃料貯蔵ラックがある。DESCRIPTION OF THE PREFERRED EMBODIMENTS At present, spent fuel generated at a nuclear power plant is stored and stored in a spent fuel storage pool in a reactor building. In recent years, it has been desired to increase the storage capacity of this spent fuel storage pool. It is rare. However, since it is difficult to change the shape of the spent fuel storage pool, it is necessary to more efficiently store the spent fuel, and as a method, the corner wall thickness of the rectangular cylinder constitutes the rectangular cylinder. A plurality of rectangular cylinders having a corner portion with a radius of curvature that is substantially equal to the other wall thickness, the distance between the outer wall surfaces of the rectangular cylinder is substantially equal to the distance between the inner wall surfaces of the rectangular cylinder. For joining, it is arranged in a checkerboard pattern that enables the highest density geometrically by arranging it in the same way, and a notch is provided between each corner of the rectangular cylinder in a part of its longitudinal direction There is a spent fuel storage rack in which the rectangular cylinders are fixed to each other by inserting and interposing members and filling the notched portion with welding metal by welding.
【００１３】以下、本発明の一実施例を図１から図５に
より説明する。An embodiment of the present invention will be described below with reference to FIGS.
【００１４】図１は、本発明による接合用部材を用いた
使用済燃料貯蔵ラックの部分平断面図で、市松模様状に
配列された複数個の角筒体において相互に隣接する角筒
体１のコーナ部間に接合用部材２が挿入され、角筒体１
同士が互いに連結された状態を示している。図２は、本
発明による接合用部材２の一例を示す斜視図で、接合用
部材２は長手方向の一部にある切欠き部３底部の断面形
状が正三角形となるように盛り上げた山形部４を有する
構造である。図３は、接合用部材２の角筒体取付状態の
詳細図で、接合用部材２の切欠き部３に溶接により溶着
金属５を充填し角筒体１同士を連結した状態を示してい
る。ここで、図中の一点鎖線６は使用済燃料を貯蔵する
ために必要な範囲を示している。図４は、角筒体１の長
手方向における接合用部材２の取付状態を示す使用済燃
料貯蔵ラックの側面図で、接合用部材２は、使用済燃料
貯蔵ラックとして必要とされる強度を確保するために、
適当なピッチで縦方向に数箇所配置される構造である。FIG. 1 is a partial plan cross-sectional view of a spent fuel storage rack using a joining member according to the present invention. In a plurality of square cylinders arranged in a checkered pattern, square cylinders 1 adjacent to each other are shown. The joining member 2 is inserted between the corners of the rectangular cylinder 1
This shows a state in which they are connected to each other. FIG. 2 is a perspective view showing an example of the joining member 2 according to the present invention. The joining member 2 has a notch 3 in a part of the longitudinal direction, and a chevron portion which is raised so that the cross-sectional shape of the bottom of the notch 3 becomes an equilateral triangle. 4. FIG. 3 is a detailed view of a state where the rectangular member is attached to the joining member 2, and shows a state in which the notched portion 3 of the joining member 2 is filled with the welding metal 5 by welding and the rectangular cylinders 1 are connected to each other. . Here, an alternate long and short dash line 6 in the figure indicates a range necessary for storing spent fuel. FIG. 4 is a side view of the spent fuel storage rack showing the mounting state of the joining member 2 in the longitudinal direction of the rectangular cylinder 1, and the joining member 2 secures the strength required for the spent fuel storage rack. To do
This is a structure in which several locations are arranged in the vertical direction at an appropriate pitch.
【００１５】図５に、本発明による接合用部材の他の実
施例を示す。本実施例は、接合用部材２の横幅７が大き
くなった場合に山形に盛り上げた部分の頂部が接合用部
材２の切欠き部３を有する側の面より高くなる場合（図
中点線部分）、切欠き部底部の断面形状を台形８となる
ように山形に盛り上げることにより、横幅７の大きい接
合用部材２においても切欠き部底部の断面形状を正三角
形となるように山形に盛り上げた接合用部材２と同様の
機能を確保する事が可能である。FIG. 5 shows another embodiment of the joining member according to the present invention. In the present embodiment, when the lateral width 7 of the joining member 2 is increased, the top of the mountain-shaped raised portion is higher than the surface of the joining member 2 on the side having the notch 3 (the dotted line portion in the figure). By forming the notch bottom in a mountain shape so that the cross-sectional shape of the notch portion becomes a trapezoid 8, the joining member 2 having a large width 7 is formed into a mountain shape so that the cross-sectional shape of the notch bottom portion becomes a regular triangle. It is possible to secure the same function as that of the member 2 for use.
【００１６】また、本発明による接合用部材は、ステン
レス鋼を機械加工およびその他の加工方法によって成型
加工したものであっても良いし、鋳造によって製作した
ステンレス鋼の鋳鋼やセラミックス等の非金属材料であ
っても良い。さらに、この接合用部材は、前記の材料に
中性子吸収能の高い元素であるＢ，Ｇｄ，Ｓｍ，Ｅｕ，
Ｃｄ，Ｄｙ，Ｉｎ，Ｅｒ，Ｔａ，Ｒｈ，Ｔｍ，Ｌｕ，Ｈ
ｆ，Ａｕ，ＲｅおよびＡｇ等のいずれか一つまたは複数
の元素を含ませた材料としても良い。Further, the joining member according to the present invention may be formed by forming stainless steel by machining or other working methods, or may be a non-metallic material such as cast stainless steel or ceramics manufactured by casting. It may be. Further, this joining member is composed of the above-mentioned materials such as B, Gd, Sm, Eu,
Cd, Dy, In, Er, Ta, Rh, Tm, Lu, H
It may be a material containing one or more elements such as f, Au, Re, and Ag.
【００１７】[0017]
【発明の効果】本発明では、接合用部材が、断面形状が
正三角形または台形の盛り上げ部を切欠き部の底部に設
けることにより、切欠き部に充填する溶着金属の量を少
なくする事ができ、溶接作業時間も短くする事ができ
る。According to the present invention, the joining member has a sectional shape.
Set a raised part of an equilateral triangle or trapezoid at the bottom of the notch.
Only by Rukoto, can reduce the amount of weld metal to be filled into the cutout portion, it is possible to shorter welding time.
【００１８】さらに溶着金属の量を少なく、溶接作業時
間も短くできるため、ラック全体の溶接熱変形を小さく
する事が出きるので、高精度で高品質な使用済燃料貯蔵
ラックを得ることができる。Further, since the amount of the deposited metal can be reduced and the welding operation time can be shortened, the welding heat deformation of the entire rack can be reduced, so that a highly accurate and high quality spent fuel storage rack can be obtained. .
【図１】本発明による接合用部材を用いた使用済燃料貯
蔵ラックの部分平断面図。FIG. 1 is a partial plan sectional view of a spent fuel storage rack using a joining member according to the present invention.
【図２】本発明による接合用部材の一例を示す斜視図。FIG. 2 is a perspective view showing an example of a joining member according to the present invention.
【図３】本発明による接合用部材の角筒体取付状態の説
明図。FIG. 3 is an explanatory view of a state in which a rectangular cylindrical body is attached to a joining member according to the present invention.
【図４】角筒体の長手方向における接合用部材の取付状
態を示す使用済燃料貯蔵ラックの側面図。FIG. 4 is a side view of the spent fuel storage rack showing a mounting state of a joining member in a longitudinal direction of the rectangular cylinder.
【図５】本発明による接合用部材の他の実施例の説明
図。FIG. 5 is an explanatory view of another embodiment of the joining member according to the present invention.
【図６】従来技術による接合用部材の角筒体取付状態の
断面図。FIG. 6 is a cross-sectional view showing a state in which a joining member according to the related art is attached to a rectangular cylinder.
【図７】従来技術による接合用部材の一例を示す斜視
図。FIG. 7 is a perspective view showing an example of a joining member according to a conventional technique.
１…角筒体、２…接合用部材、３…切欠き部、４…山形
部。DESCRIPTION OF SYMBOLS 1 ... Square cylinder, 2 ... Joining member, 3 ... Notch part, 4 ... Angle section.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 玉井 康方 茨城県日立市幸町三丁目１番１号 株式 会社 日立製作所 日立工場内 (72)発明者 松本 隆 茨城県日立市幸町三丁目１番１号 株式 会社 日立製作所 日立工場内 (58)調査した分野(Int.Cl.7，ＤＢ名) G21C 19/07 G21C 19/06 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasukata Tamai 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Pref. Hitachi, Ltd. Hitachi Plant (72) Inventor Takashi Matsumoto 3-1-1, Sachimachi, Hitachi-shi, Ibaraki No. 1 Hitachi, Ltd. Hitachi Plant (58) Fields surveyed (Int. Cl. 7 , DB name) G21C 19/07 G21C 19/06
Claims (6)
の角筒体を備え、これらの角筒体を、前記角筒体の内壁
面間距離が前記角筒体の外壁面間距離と実質的に等しく
なるように市松模様に配置し、長手方向の一部に切欠き
部を設けた接合用部材を、隣接する前記角筒体の各コー
ナ部間に介在させ、前記切欠き部に溶接により溶着金属
を充填することにより隣接する相互の前記角筒体を固定
してなる使用済燃料貯蔵ラックにおいて、 前記接合用部材が、断面形状が正三角形の盛り上げ部を
前記切欠き部の底部に設け たことを特徴とする使用済燃
料貯蔵ラック。Claims: 1. A plurality of fuel assemblies in which spent fuel assemblies are stored.
Of the rectangular cylinder, and these rectangular cylinders are
The distance between the surfaces is substantially equal to the distance between the outer wall surfaces of the rectangular cylinder.
Arrange them in a checkered pattern and cut out a part of the longitudinal direction
The joining member provided with the portion is connected to each of the cords of the adjacent rectangular cylinder.
The notch is welded to the notch by welding.
To fix the adjacent rectangular cylinders by filling
In the spent fuel storage rack, the joining member has a raised portion having a regular triangular cross section.
A spent fuel storage rack provided at the bottom of the notch .
の角筒体を備え、これらの角筒体を、前記角筒体の内壁
面間距離が前記角筒体の外壁面間距離と実質的に等しく
なるように市松模様に配置し、長手方向の一部に切欠き
部を設けた接合用部材を、隣接する前記角筒体の各コー
ナ部間に介在させ、前記切欠き部に溶接により溶着金属
を充填することにより隣接する相互の前記角筒体を固定
してなる使用済燃料貯蔵ラックにおいて、 前記接合用部材が、断面形状が台形の盛り上げ部を前記
切欠き部の底部に設け たことを特徴とする使用済燃料貯
蔵ラック。2. A plurality of fuel assemblies in which spent fuel assemblies are stored.
Of the rectangular cylinder, and these rectangular cylinders are
The distance between the surfaces is substantially equal to the distance between the outer wall surfaces of the rectangular cylinder.
Arrange them in a checkered pattern and cut out a part of the longitudinal direction
The joining member provided with the portion is connected to each of the cords of the adjacent rectangular cylinder.
The notch is welded to the notch by welding.
To fix the adjacent rectangular cylinders by filling
In the spent fuel storage rack thus obtained, the joining member has a raised portion having a trapezoidal cross section.
A spent fuel storage rack provided at a bottom of a notch .
材がステンレス鋼からなる使用済燃料貯蔵ラック。3. A spent fuel storage rack according to claim 1, wherein said joining member is made of stainless steel.
材がステンレス鋼の鋳鋼からなる使用済燃料貯蔵ラッ
ク。4. A spent fuel storage rack according to claim 1, wherein said joining member is made of stainless steel cast steel.
材がセラッミクスからなる使用済燃料貯蔵ラック。5. The spent fuel storage rack according to claim 1, wherein the joining member is made of ceramics.
記接合用部材が中性子吸収能の高い元素であるＢ，Ｇ
ｄ，Ｓｍ，Ｅｕ，Ｃｄ，Ｄｙ，Ｉｎ，Ｅｒ，Ｔａ，Ｒ
ｈ，Ｔｍ，Ｌｕ，Ｈｆ，Ａｕ，ＲｅおよびＡｇ等のいず
れか一つまたは複数の元素を含む材料からなる使用済燃
料貯蔵ラック。6. The bonding member according to claim 1, wherein said bonding member is an element having a high neutron absorption capacity.
d, Sm, Eu, Cd, Dy, In, Er, Ta, R
A spent fuel storage rack made of a material containing one or more elements such as h, Tm, Lu, Hf, Au, Re, and Ag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04045277A JP3141491B2 (en) | 1992-03-03 | 1992-03-03 | Spent fuel storage rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04045277A JP3141491B2 (en) | 1992-03-03 | 1992-03-03 | Spent fuel storage rack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05249284A JPH05249284A (en) | 1993-09-28 |
| JP3141491B2 true JP3141491B2 (en) | 2001-03-05 |
Family
ID=12714820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04045277A Expired - Lifetime JP3141491B2 (en) | 1992-03-03 | 1992-03-03 | Spent fuel storage rack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3141491B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010071868A (en) * | 2008-09-19 | 2010-04-02 | Hitachi-Ge Nuclear Energy Ltd | Method of manufacturing spent nuclear fuel storage rack, filler material used for this method and the spent nuclear fuel storage rack manufactured by the method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735318B (en) * | 2018-06-04 | 2024-02-09 | 江苏核电有限公司 | Stainless steel boron aluminum composite board for PWR fuel assembly storage cell and manufacturing method |
| KR102313393B1 (en) | 2019-12-18 | 2021-10-15 | 한국단자공업 주식회사 | Unlocking device |
| CN112173343B (en) * | 2020-09-24 | 2022-04-22 | 中国核动力研究设计院 | Welding method for square tube of spent fuel storage grillwork |
-
1992
- 1992-03-03 JP JP04045277A patent/JP3141491B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010071868A (en) * | 2008-09-19 | 2010-04-02 | Hitachi-Ge Nuclear Energy Ltd | Method of manufacturing spent nuclear fuel storage rack, filler material used for this method and the spent nuclear fuel storage rack manufactured by the method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05249284A (en) | 1993-09-28 |
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