JPS6058438B2 - Reactor fuel support bracket storage rack - Google Patents
Reactor fuel support bracket storage rackInfo
- Publication number
- JPS6058438B2 JPS6058438B2 JP55006431A JP643180A JPS6058438B2 JP S6058438 B2 JPS6058438 B2 JP S6058438B2 JP 55006431 A JP55006431 A JP 55006431A JP 643180 A JP643180 A JP 643180A JP S6058438 B2 JPS6058438 B2 JP S6058438B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel support
- fuel
- fitting
- guide pin
- support fitting
- 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
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
- Load-Engaging Elements For Cranes (AREA)
Description
【発明の詳細な説明】
この発明は沸謄水形原子炉において、原子炉圧力容器
内の燃料集合体下部を支持している燃料支持金具を収容
する原子炉用燃料支持金具収容ラックに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nuclear reactor fuel support fitting storage rack for accommodating fuel support fittings supporting a lower part of a fuel assembly in a reactor pressure vessel in a boiling water nuclear reactor.
沸謄水形原子炉における圧力容器内には、第１図に示
されるように、炉心支持板ａに４本１組の燃料集合体を
・・・の下部を支持するための燃料支持金具Ａが上記炉
心支持板ａに対して着脱自在に取着されており、この燃
料支持金具Ａの中央部に形成された十字状の通孔Ａｌに
制御棒ｃが移動自在に挿通されるようになつている。In the pressure vessel of a boiling water reactor, as shown in Figure 1, there is a fuel support fitting A for supporting the lower part of a set of four fuel assemblies on the core support plate a. is removably attached to the core support plate a, and the control rod c is movably inserted into a cross-shaped through hole Al formed in the center of the fuel support fitting A. ing.
また、上記燃料支持金具Ａにはその側部にガイドピン嵌
合用の凹部Ａ２が形成されていて、この凹部Ａ。は、炉
心支持板ａの上面に突設されたガイドピンｅに嵌合する
ようになつている。以上のように構成された燃料支持金
具Ａは、専用の燃料支持金具掴み具を使用して炉心支持
板ａに対する着脱がなされるものであるが、この着脱作
業を安全に確実に行なうための安全装置として、燃料支
持金具Ａとの噛合い部の着脱用弁機構は、上記ガイドピ
ンｅと燃料支持金具Ａの上面との双方に接触したときに
初めて作動する構造となつている。すなわち、ガイドピ
ンｅは燃料支持金具Ａの着脱をなすための重要なガイド
として使用されるものである。なお、ｆは制御棒案内管
を示す。 しカルて、上記燃料支持金具Ａは、定期点検
時等における制御棒ｃの取外し、交換時には炉心支持板
ａから取出す必要があり、従来は取出された燃料支持金
具Ａを燃料貯蔵プール等にそのまま無秩序に仮置してい
る。Further, the fuel support fitting A has a recess A2 formed on its side for fitting a guide pin. is adapted to fit into a guide pin e protruding from the upper surface of the core support plate a. The fuel support fitting A configured as described above is attached to and detached from the core support plate a using a dedicated fuel support fitting gripping tool. As a device, the valve mechanism for attaching and detaching the meshing portion with the fuel support fitting A is configured to operate only when it comes into contact with both the guide pin e and the upper surface of the fuel support fitting A. That is, the guide pin e is used as an important guide for attaching and detaching the fuel support fitting A. Note that f indicates a control rod guide tube. However, the fuel support fittings A need to be taken out from the core support plate a when the control rods c are removed or replaced during periodic inspections, etc., and conventionally, the removed fuel support fittings A were simply placed in a fuel storage pool, etc. It is temporarily placed in a disorderly manner.
したがつて燃料貯蔵プール内に、これら燃料支持金具を
仮置するための必要以上に広いスペースを占有している
が、今後使用済燃料が増大して燃料貯蔵プール内のスペ
ースを有効に活用することが重要な課題となることが予
想される。 この発明は上記事情にもとづきなされたも
のでその目的とするところは、狭いスペース上に多数の
燃料支持金具を整然と収容でき、貯蔵スペースの有効利
用が図れる燃料支持金具収容ラックを提供することにあ
る。Therefore, the space in the fuel storage pool for temporarily placing these fuel support fittings is larger than necessary, but as the amount of spent fuel increases in the future, it will be necessary to make effective use of the space in the fuel storage pool. It is expected that this will become an important issue. The present invention has been made based on the above circumstances, and its purpose is to provide a fuel support fitting storage rack that can store a large number of fuel support fittings in a narrow space in an orderly manner, and that can effectively utilize the storage space. .
以下この発明に係る燃料支持金具収容ラックの一実施例
を第３図および第４図を参照して説明する。An embodiment of the fuel support fitting storage rack according to the present invention will be described below with reference to FIGS. 3 and 4. FIG.
図中１は燃料支持金具収容ラック、２・・・は載置プレ
ートを示し、これら載置プレート２・・・は燃料支持金
具Ａを垂直方向に収納できるような間隔を存して上下に
離間して複数段設けられている。また、これら各載置プ
レート２には、燃料支持金具Ａを嵌合保持するためのほ
ぼＵ字状をなす切欠状の支承部３が形成されている。こ
の支承部３は、燃料支持金具Ａの下半部が嵌合し得るよ
うな形状、すなわち炉心支持板ａにおける支承部と対応
した形状に形成されているとともに、燃料支持金具Ａの
側方からの出し入れがなし得るようにその一側Ｓが開放
されている。また、各載置プレート２上には、前記ガイ
ドピンｅと同一の形状をなす疑似ガイドピン４が突設さ
れている。この疑似ガイドピン４は、支承部３に燃料支
持金具Ａを保持した状態において上記ガイドピンｅに相
当する位置に形成されていて、この疑似ガイドピン４に
燃料支持金具Ａに設けられたガイドピン嵌合用の凹部〜
が嵌合するようになつている。以上のように構成された
燃料支持金具収容ラック１は、たとえば燃料貯蔵プール
内に設置される。In the figure, 1 indicates a fuel support fitting storage rack, 2... indicates a mounting plate, and these mounting plates 2... are vertically spaced apart from each other with an interval that allows the fuel support fitting A to be stored in the vertical direction. There are multiple stages. Further, each of these mounting plates 2 is formed with a substantially U-shaped notched support portion 3 for fitting and holding the fuel support fitting A. This support part 3 is formed in a shape that allows the lower half of the fuel support fitting A to fit into it, that is, a shape that corresponds to the support part in the core support plate a, and is also formed from the side of the fuel support fitting A. One side S thereof is open so that it can be taken in and taken out. Further, on each mounting plate 2, a pseudo guide pin 4 having the same shape as the guide pin e is provided to protrude. This pseudo guide pin 4 is formed at a position corresponding to the above-mentioned guide pin e when the fuel support fitting A is held on the support part 3, and the guide pin provided on the fuel support fitting A is formed on this pseudo guide pin 4. Recess for fitting ~
are designed to fit together. The fuel support fitting storage rack 1 configured as described above is installed, for example, in a fuel storage pool.
そして原子炉の定期点検時において、専用の掴み具を使
用して炉心支持板ａから取出された燃料支持金具Ａ・・
・は、この燃料支持金具収容ラック１の各支承部３・・
・に下から順に収容される。すな−わち、各燃料支持金
具Ａは、載置プレート２の側方つまり開放されている側
面Ｓ側から支承部３に挿入されるものであり、この掴み
具の着脱用安全装置が疑似ガイドピン４に接触すること
によつて着脱用弁機構が作動し、掴み具に対する燃料支
持金具Ａの係合が外れて燃料支持金具Ａは支承部３側に
嵌合保持される。一方、この逆の手順で掴み具を作動さ
せることにより、ラック１から燃料支持金具Ａを取出す
ことができる。そしてラック１から取出された燃料支持
金具Ａは、炉心支持板ａに挿着されて掴み具の安全装置
がガイドピンｅに接触すると、上記疑似ガイドピン４の
場合と同様に着脱用弁機構が作動し、掴み具から燃料支
持金具Ａが外れて炉心支持板ａ側に燃料支持金具Ａが嵌
合保持されるものである。このように本実施例によれば
、載置プレート２上に炉心のガイドピンｅに相当する位
置・形状の，疑似ガイドピン４を突設することにより、
載置プレート２に対する燃料支持金具Ａの着脱操作を炉
心支持板ａの場合と同様になすことが可能となり、多段
の載置プレート２・・・を使用して垂直方向に多数の燃
料支持金具Ａ・・・を積み重ねることができる。During periodic inspections of the reactor, the fuel support fitting A was taken out from the core support plate a using a special gripping tool.
・ is each support part 3 of this fuel support metal storage rack 1...
・They are stored in order from the bottom. That is, each fuel support fitting A is inserted into the support part 3 from the side of the mounting plate 2, that is, from the open side S side, and the safety device for attaching and detaching this grip is a pseudo By contacting the guide pin 4, the attachment/detachment valve mechanism is actuated, and the fuel support fitting A is disengaged from the grip, so that the fuel support fitting A is fitted and held on the support portion 3 side. On the other hand, the fuel support fitting A can be taken out from the rack 1 by operating the gripper in the reverse order. Then, when the fuel support fitting A taken out from the rack 1 is inserted into the core support plate a and the safety device of the grip comes into contact with the guide pin e, the attachment/detachment valve mechanism is activated as in the case of the pseudo guide pin 4 described above. When activated, the fuel support fitting A is detached from the grip, and the fuel support fitting A is fitted and held on the core support plate a side. As described above, according to this embodiment, by protruding the pseudo guide pin 4 on the mounting plate 2 in the position and shape corresponding to the core guide pin e,
It is now possible to attach and detach the fuel support fittings A to and from the mounting plate 2 in the same way as in the case of the core support plate a, and by using the multi-stage mounting plates 2..., a large number of fuel support fittings A can be mounted in the vertical direction. ... can be accumulated.
したがつて狭いスペース上に多数の燃料支持金具Ａ・・
・を整然と貯蔵できることとなり、燃料貯蔵プール内の
スペースの有効利用が図れるものである。なお載置プレ
ートは要するに複数段設けてあればよく、その段数につ
いて実施例に制約されないことは言うまでもない。Therefore, there are many fuel support fittings A...in a narrow space.
・It is possible to store fuel in an orderly manner, and the space within the fuel storage pool can be used effectively. In short, it is sufficient that the mounting plate is provided in a plurality of stages, and it goes without saying that the number of stages is not limited to the embodiments.
この発明は以上説明したように、複数段に設けられた載
置プレートの支承部にそれぞれ燃料支持金具を嵌合保持
させて垂直方向に多数収容するようにし、かつ各載置プ
レート上には炉心支持板に設けられているガイドピンに
相当する疑似ガイドピンを突設することにより既設の燃
料支持金具掴み具をそのまま使用して燃料支持金具の着
脱作業を簡単かつ確実に、迅速に行なうことができるよ
うにしたから、狭い貯蔵スペース上に多数の燃料支持金
具を既存の掴み具を使用して能率的に貯蔵することがで
き、燃料貯蔵プール等における貯蔵スペースを有効に活
用できる。As explained above, in this invention, a large number of fuel support fittings are fitted and held in the support portions of mounting plates provided in multiple stages to accommodate a large number of fuels in the vertical direction. By protruding a pseudo guide pin corresponding to the guide pin provided on the support plate, it is possible to easily, reliably, and quickly attach and detach the fuel support fitting by using the existing fuel support fitting gripping tool as is. This makes it possible to efficiently store a large number of fuel support fittings in a narrow storage space using existing gripping tools, and to effectively utilize the storage space in a fuel storage pool or the like.
したがつて、今後使用済燃料が増大する傾向にある原子
力プラントにおいて、本願はスペースの有効利用の観点
からきわめて有益である。Therefore, in nuclear power plants where the amount of spent fuel is likely to increase in the future, the present application is extremely useful from the standpoint of effective use of space.
第１図は沸謄水形原子炉における炉心部の一部の縦断面
図、第２図は燃料支持金具の平面図、第３図は本発明に
係る燃料支持金具収容ラックの斜視図、第４図は燃料支
持金具を収容した状態を示す斜視図である。
１・・・燃料支持金具収容ラック、２・・・載置プレー
ト、３・・・支承部、４・・・疑似ガイドピン、Ａ・・
・燃料支持金具、〜・・・ガイドピン嵌合用凹部。FIG. 1 is a vertical sectional view of a part of the core of a boiling water reactor, FIG. 2 is a plan view of a fuel support fitting, and FIG. 3 is a perspective view of a fuel support fitting storage rack according to the present invention. FIG. 4 is a perspective view showing a state in which the fuel support fittings are accommodated. DESCRIPTION OF SYMBOLS 1... Fuel support metal storage rack, 2... Placement plate, 3... Support part, 4... Pseudo guide pin, A...
・Fuel support fitting, ... recess for fitting guide pin.
Claims (1)
を有し、これら各載置プレートにはそれぞれ燃料支持金
具を嵌合保持しかつ燃料支持金具の側方からの出入を可
能にするべく一側を開放した支承部を形成するとともに
、各載置プレート上にはそれぞれ燃料支持金具の側部に
形成されたガイドピン嵌合用の凹部に嵌合しかつ燃料支
持金具を着脱する専用掴み具であつて着脱作業を安全に
確実に行なうため着脱動作を制限する安全装置を有する
燃料支持金具掴み具が載置プレートの支承部上の所定位
置まで下降したときに安全装置に接触しこれを解除する
疑似ガイドピンを突設し、この疑似ガイドピンは支承部
に対して予め設定された位置に設けられたことを特徴と
する原子炉用燃料支持金具収容ラック。1 It has a plurality of mounting plates vertically spaced apart at predetermined intervals, and each of these mounting plates is designed to fit and hold a fuel support fitting, and to enable the fuel support fitting to be entered and exited from the side. A support part with one side open is formed, and a special grip is provided on each mounting plate that fits into a recess for fitting a guide pin formed on the side of the fuel support metal fitting and for attaching and detaching the fuel support metal fitting. In order to safely and reliably perform the attachment/detachment work, the fuel support metal grip, which has a safety device that restricts the attachment/detachment operation, comes into contact with the safety device and releases it when it descends to a predetermined position on the support part of the mounting plate. What is claimed is: 1. A nuclear reactor fuel support fitting storage rack, characterized in that a pseudo guide pin is provided in a protruding manner, and the pseudo guide pin is provided at a predetermined position with respect to a support part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55006431A JPS6058438B2 (en) | 1980-01-23 | 1980-01-23 | Reactor fuel support bracket storage rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55006431A JPS6058438B2 (en) | 1980-01-23 | 1980-01-23 | Reactor fuel support bracket storage rack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56104293A JPS56104293A (en) | 1981-08-19 |
| JPS6058438B2 true JPS6058438B2 (en) | 1985-12-19 |
Family
ID=11638197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55006431A Expired JPS6058438B2 (en) | 1980-01-23 | 1980-01-23 | Reactor fuel support bracket storage rack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6058438B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6454291A (en) * | 1987-08-25 | 1989-03-01 | Japan Atomic Power | Motor part accomodating rack of internal pump |
-
1980
- 1980-01-23 JP JP55006431A patent/JPS6058438B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56104293A (en) | 1981-08-19 |
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