JP2010096537A - Sloshing and overflow suppression device - Google Patents

Sloshing and overflow suppression device Download PDF

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JP2010096537A
JP2010096537A JP2008265485A JP2008265485A JP2010096537A JP 2010096537 A JP2010096537 A JP 2010096537A JP 2008265485 A JP2008265485 A JP 2008265485A JP 2008265485 A JP2008265485 A JP 2008265485A JP 2010096537 A JP2010096537 A JP 2010096537A
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pool
sloshing
partition plate
peripheral wall
fuel storage
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JP4896942B2 (en
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Atsuo Teranishi
厚雄 寺西
Masataka Nakajima
政隆 中島
Takashi Ueki
孝 植木
Yoshinori Nagashima
慶典 長島
Tomokazu Higuchi
智一 樋口
Takuma Hatano
琢磨 羽田野
Shunichi Hatano
俊一 羽田野
Kaoru Takagi
薫 高木
Hideo Hirai
秀男 平井
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Toshiba Corp
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Toshiba Corp
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To suppress sloshing and overflow during an earthquake period without damaging a function as a storage facility of a fuel storage pool and a monitoring property in the fuel storage pool. <P>SOLUTION: Partition plates 3 are installed in a direction vertical to a liquid surface in the vicinity of the liquid surface inside the fuel storage pool 1 storing pool water 2, and the partition plates 3 are installed in a structure held by support members 4 fixed firmly on a fuel storage pool wall, and a structure having slits 5 at useful intervals between each partition plate 3 is adopted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は原子力発電プラントの使用済燃料貯蔵プール等に適用されるスロッシングおよび溢水抑制装置に係り、特にプールが保有するプール水の地震時におけるスロッシングに対する溢水防止、溢水量低減等を図ったスロッシングおよび溢水抑制装置に関する。   The present invention relates to a sloshing and overflow control device applied to a spent fuel storage pool or the like of a nuclear power plant, and more particularly to a sloshing intended to prevent overflow, reduce the amount of overflow, etc. The present invention relates to an overflow control device.

原子力発電プラントの原子炉建屋内に設置されている燃料貯蔵プールは、使用済燃料等の冷却のために大量のプール水を保有している。また、燃料貯蔵プールの側面および底面はコンクリート壁により構築され、燃料貯蔵プールの水深を十分に取ることで放射線の遮蔽効果を有する構造となっている。   The fuel storage pool installed in the reactor building of the nuclear power plant holds a large amount of pool water for cooling spent fuel and the like. Moreover, the side surface and bottom surface of the fuel storage pool are constructed of concrete walls, and the structure has a radiation shielding effect by sufficiently taking the water depth of the fuel storage pool.

燃料貯蔵プールの内面はプール水の漏洩を防止するためにステンレス鋼製のライナでライニングされており、またライナの破損による漏洩を監視するための漏洩検出計および水位警報装置を設けるなど、プール水の散逸に対しては、十分な配慮を行った設計になっている。   The inner surface of the fuel storage pool is lined with a stainless steel liner to prevent the pool water from leaking, and a leak detector and water level warning device are provided to monitor leakage due to liner breakage. Designed with sufficient consideration for the dissipation of.

さらに、燃料貯蔵プール外周縁部に柵を設けて、燃料貯蔵プール内部の監視を行う作業員の転落を防止している。   Furthermore, a fence is provided on the outer peripheral edge of the fuel storage pool to prevent the worker who monitors the inside of the fuel storage pool from falling.

そして、従来においては、プールが保有するプール水の地震時におけるスロッシングによる溢水防止、溢水量低減等を図る種々のスロッシングおよび溢水抑制装置が提案されている（特許文献１−５等参照）。
特開２００６−３１７２３０号公報 特開２００６−３２９７９９号公報 特開２００７−１６３２０４号公報 特開平６−１４６２４８号公報 特開平８−１０１２９６号公報 In the past, various sloshing and overflow control devices have been proposed for preventing flooding due to sloshing during pool water earthquakes held by the pool and reducing the amount of overflow (see Patent Documents 1-5, etc.).
JP 2006-317230 A JP 2006-329799 A JP 2007-163204 A JP-A-6-146248 JP-A-8-101296

一般に原子力発電プラントの燃料貯蔵プールは、原子炉建屋上部の燃料取替フロアに設置されているため、地震による影響を受け易い構造となっている。   In general, the fuel storage pool of a nuclear power plant is installed on the fuel replacement floor at the top of the reactor building, and thus is easily affected by an earthquake.

そして、上述した従来技術では、それぞれ燃料貯蔵プールが保有するプール水が地震時において揺動した場合、スロッシングによりプール水が揺動によって液位上昇することで、燃料取替フロアへ溢水する可能性がある。   In the conventional technology described above, when the pool water held by each fuel storage pool fluctuates during an earthquake, the pool water may rise due to the sloshing due to the sloshing, and may overflow to the fuel replacement floor. There is.

溢水したプール水は一旦燃料取替フロアに停留するが、ある一定量を超えると燃料取替フロアから階下へ流出する可能性がある。   Overflowing pool water temporarily stops on the fuel replacement floor, but if it exceeds a certain amount, it may flow down from the fuel replacement floor.

また、燃料貯蔵プールの外周縁部には柵が設置され、さらに柵にシートを張り、溢水防止用壁とするなど応急的措置が施されている。しかし、スロッシングが発生した場合には、シートのみでは溢水を必ずしも支えきれず、さらに柵が倒れてしまう可能性も考えられる。   In addition, a fence is installed on the outer peripheral edge of the fuel storage pool, and further measures are taken such as adding a sheet to the fence to create a wall for preventing overflow. However, when sloshing occurs, overflowing is not always supported by the sheet alone, and the fence may fall down.

なお、従来のスロッシング対策に関する提案においては、スロッシング自体を低減させる装置（例えば特許文献１参照）と、スロッシングによる揺動プール水が燃料貯蔵プールから溢水することを防止する装置（例えば特許文献２，３，４，５等参照）に大別される。   In addition, in the proposal regarding the conventional anti-sloshing method, an apparatus for reducing the sloshing itself (see, for example, Patent Document 1) and an apparatus for preventing rocking pool water due to the slosh from overflowing from the fuel storage pool (for example, Patent Document 2,). 3).

しかし、従来の提案においては、燃料貯蔵プール周辺に連続的な柵、壁の設置を必要とする等、燃料交換器による燃料取出し、装荷の作業性、監視カメラ等による燃料貯蔵プール内の監視性を損なう可能性がある。   However, in the conventional proposal, it is necessary to install a continuous fence and wall around the fuel storage pool. For example, the fuel can be taken out by the fuel exchanger, the workability of the loading, and the monitoring property in the fuel storage pool by the monitoring camera etc. May be damaged.

また、プールの隅角部で生じる局所的な波高上昇に着目して溢水を防止することができる溢水防止装置に関する提案は見られない。   In addition, there is no proposal regarding an overflow prevention device that can prevent overflow by paying attention to a local wave height rise that occurs at the corner of the pool.

本発明はこのような事情に鑑みてなされたものであり、燃料貯蔵プールの貯蔵設備としての機能および燃料貯蔵プール内の監視性を損なうことなく、地震時におけるスロッシングおよび溢水、特にプール隅角部での波高上昇による溢水を十分に抑制することができ、プール内の監視性も損なうことがないスロッシングおよび溢水抑制装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and the sloshing and overflow in the event of an earthquake, particularly in the corner of the pool, without impairing the function as the storage facility of the fuel storage pool and the monitoring in the fuel storage pool. It is an object of the present invention to provide a sloshing and overflow control device that can sufficiently suppress overflow due to rising wave height in the water and does not impair the monitoring property in the pool.

前記の目的を達成するため、本発明では、プール内に収容された水の少なくとも液面部位の上下位置に、前記プールの周壁内面に沿ってプール液面からプール水内部側に垂下する複数枚の横長な縦板状の仕切板を上下方向にそれぞれ隙間をあけて配設し、これらの仕切板と前記プール内周壁との間に一定の間隔を設定し、この間隔部位に、地震時に前記仕切板の頂部を超える水を導入することにより、溢水エネルギを小とする設定としたことを特徴とするスロッシングおよび溢水抑止装置を提供する。   In order to achieve the above object, in the present invention, a plurality of sheets that hang down from the pool liquid surface to the pool water inner side along the inner surface of the peripheral wall of the pool at least in the vertical position of the liquid surface portion of the water contained in the pool. The horizontally long vertical plate-like partition plates are arranged with a gap in the vertical direction, and a fixed interval is set between these partition plates and the pool inner peripheral wall. The present invention provides a sloshing and overflow prevention device characterized in that by introducing water beyond the top of the partition plate, the overflow energy is set to be small.

本発明によれば、地震時にプール水のスロッシングが生じた場合、プール水は燃料貯蔵プールの壁面に押し寄せる前に仕切板により遮られ、仕切板に押し寄せるプール水の一部は仕切板間のスリットを通過することで乱流が生じ、これにより水のエネルギロスを生じさせ、スロッシングの抑制に貢献することができる。   According to the present invention, when sloshing of pool water occurs during an earthquake, the pool water is blocked by the partition plate before pressing against the wall surface of the fuel storage pool, and part of the pool water pressing against the partition plate is slit between the partition plates. By passing through the turbulent flow, turbulent flow is generated, thereby causing energy loss of water and contributing to suppression of sloshing.

また、仕切板の上部を乗り越えてしまうプール水は仕切板と燃料貯蔵プールの壁面との空間に着水することで、本来プール壁を越えると予測される溢水量を低減することができる。したがって、燃料貯蔵プールの貯蔵設備としての機能および燃料貯蔵プール内の監視性を損なうことなく、地震時におけるスロッシングおよび溢水を抑制することができる。   Moreover, the pool water which gets over the upper part of a partition plate lands in the space of a partition plate and the wall surface of a fuel storage pool, and it can reduce the amount of overflow | flood originally anticipated exceeding a pool wall. Therefore, it is possible to suppress sloshing and overflow during an earthquake without impairing the function of the fuel storage pool as a storage facility and the monitoring ability in the fuel storage pool.

以下、本発明に係るスロッシングおよび溢水抑制装置の実施形態について、図面を参照して説明する。なお、以下の実施形態では原子力発電プラントの使用済燃料貯蔵プールに適用した場合を例として説明する。   Hereinafter, embodiments of a sloshing and overflow control device according to the present invention will be described with reference to the drawings. In the following embodiment, a case where the present invention is applied to a spent fuel storage pool of a nuclear power plant will be described as an example.

［第１実施形態（図１−図４）］
図１は、本発明の第１実施形態によるスロッシングおよび溢水抑制装置を示す要部拡大斜視図である。 [First Embodiment (FIGS. 1 to 4)]
FIG. 1 is an enlarged perspective view of a main part showing a sloshing and overflow control device according to a first embodiment of the present invention.

図１には、原子力発電プラントの使用済燃料貯蔵プールをプール内側から見た状態を示している。この図１に示すように、使用済燃料貯蔵プール１にはプール水２が収容されており、このプール水２の液面２ａは燃料貯蔵プール１の上端部から一定距離低い位置に設定されている。   In FIG. 1, the state which looked at the spent fuel storage pool of a nuclear power plant from the pool inner side is shown. As shown in FIG. 1, the spent fuel storage pool 1 contains pool water 2, and the liquid level 2 a of the pool water 2 is set at a position lower than the upper end of the fuel storage pool 1 by a certain distance. Yes.

燃料貯蔵プール１には、燃料交換等を行うための水平な作業床から立上り上面が水平な堤防状の周壁１ａが設けられている。この周壁１ａの上面に、逆Ｌ字形の支持部材４が固定部材１１によりプール周方向に所定の間隔を設定して複数本固定配置されており、これらの支持部材４によって溢水抑制用の複数の仕切板３がプール１の内周壁１ｃに沿い、プール１の内周壁１ｃからプール１の内方に向かい、一定の間隔Ｓを開けて固定支持されている。   The fuel storage pool 1 is provided with an embankment-shaped peripheral wall 1a whose rising surface is horizontal from a horizontal work floor for performing fuel exchange or the like. On the upper surface of the peripheral wall 1a, a plurality of inverted L-shaped support members 4 are fixedly arranged by a fixing member 11 at a predetermined interval in the circumferential direction of the pool. The partition plate 3 is fixedly supported along the inner peripheral wall 1c of the pool 1 from the inner peripheral wall 1c of the pool 1 toward the inner side of the pool 1 with a certain interval S therebetween.

支持部材４は鋼製ロッドを素材として構成されており、プール周壁１ａの上面からプール１の内方に向って略水平に突出する鋼材製の棒状をなす仕切板支持用の主ロッド部４ａと、この主ロッド部４ａの突出先端から下向きに垂下する補助ロッド部４ｃとにより逆Ｌ字形に構成されている。そして、主ロッド部４ａの下面部位からプール１の内方に向い、プール周壁１ａからプール１の内方に向って離間する方向に下向きに傾斜配置された補助ロッド部４ｂとを有している。   The support member 4 is made of a steel rod as a raw material, and has a main rod portion 4a for supporting a partition plate, which is formed into a steel rod shape that protrudes substantially horizontally toward the inside of the pool 1 from the upper surface of the pool peripheral wall 1a. The auxiliary rod portion 4c that hangs downward from the protruding tip of the main rod portion 4a is formed in an inverted L shape. And it has the auxiliary | assistant rod part 4b which inclined downward in the direction which faces inward of the pool 1 from the lower surface part of the main rod part 4a, and separates inward of the pool 1 from the pool surrounding wall 1a. .

仕切板３は横長な縦板状のものであり、燃料貯蔵プール１内に収容されたプール水２の少なくとも液面部位の上下位置に、プール１の周壁内面に沿ってプール液面からプール水２の内部側に向って下方に１列に並んだ状態で垂下し、各仕切板３の間の上下方向には、それぞれ一定の狭いスリット５が開けてある。   The partition plate 3 has a horizontally long vertical plate shape, and at least above and below the liquid level portion of the pool water 2 accommodated in the fuel storage pool 1, the pool water from the pool liquid level along the inner surface of the peripheral wall of the pool 1. 2 hangs down in a row in a row toward the inner side of 2, and certain narrow slits 5 are opened in the vertical direction between the partition plates 3.

これらの仕切板とプール１の内周壁との間に一定の間隔があけてあり、この間隔部位に、地震時に仕切板の頂部を超える水を導入するようにしてある。すなわち、燃料貯蔵プール１の周壁１ａの内面側における少なくとも液面２ａ部位の上下部には、周壁１ａの内面に沿ってプール水２の液面２ａから液内部側に垂下する複数枚の横長な縦板状の仕切板３が上下方向にそれぞれ隙間をあけて配設されている。また、各仕切板３の上下方向には有為な間隔、すなわちプール水２が少量通過できる狭い間隔が開けてあり、燃料貯蔵プール１の周壁に向って一定の抵抗を受けてプール周壁側スリット５が開けてある。そして、仕切板３は十分な強度を有する透明樹脂素材によって構成されている。   A fixed interval is provided between these partition plates and the inner peripheral wall of the pool 1, and water exceeding the top of the partition plate is introduced into this interval portion during an earthquake. That is, at least the upper and lower portions of the liquid surface 2a portion on the inner surface side of the peripheral wall 1a of the fuel storage pool 1 are a plurality of horizontally long sheets that hang down from the liquid surface 2a of the pool water 2 along the inner surface of the peripheral wall 1a. Vertical plate-like partition plates 3 are arranged with a gap in the vertical direction. In addition, a significant interval is formed in the vertical direction of each partition plate 3, that is, a narrow interval through which a small amount of pool water 2 can pass, and a certain resistance is applied toward the peripheral wall of the fuel storage pool 1 to cause a slit on the pool peripheral wall side. 5 is open. And the partition plate 3 is comprised with the transparent resin raw material which has sufficient intensity | strength.

図２は燃料貯蔵プール１を上方から見た状態を示す全体平面図であり、図３は図２のＡ−Ａ線断面図（縦断面図）である。図４は、図３のＢ矢視図（右側面図）である。   2 is an overall plan view showing the fuel storage pool 1 as viewed from above, and FIG. 3 is a cross-sectional view (vertical cross-sectional view) taken along line AA of FIG. 4 is a view (right side view) of FIG.

図２〜図４に示すように、燃料貯蔵プール１は四角形、例えば平面視長方形状をなしており、この燃料貯蔵プール１の各隅角部は円弧状に形成されている。プール１の周壁内面側における少なくとも液面部位の上下部には、周壁１ａの内面に沿ってプール水２の液面からプール水２の内部側に垂下する複数枚の横長な縦板状の仕切板３を上下方向にそれぞれ隙間をあけて配設してある。   As shown in FIGS. 2 to 4, the fuel storage pool 1 has a square shape, for example, a rectangular shape in plan view, and each corner portion of the fuel storage pool 1 is formed in an arc shape. A plurality of horizontally long vertical partition walls that hang from the liquid surface of the pool water 2 to the inner side of the pool water 2 along the inner surface of the peripheral wall 1a at least above and below the liquid surface portion on the inner surface side of the peripheral wall of the pool 1 The plates 3 are arranged with a gap in the vertical direction.

そして、これら仕切板３がプール１の側壁部位に固定配置されて、燃料貯蔵プール１の側面に沿うように設置されている。   These partition plates 3 are fixedly disposed on the side wall portions of the pool 1 and installed along the side surfaces of the fuel storage pool 1.

さらに、燃料貯蔵プール１の隅部に曲面形状を有するプール隅仕切板６が設置されている。これにより、使用済燃料貯蔵プール１内に対する外部からの視認性を阻害しない構成となっている。   Furthermore, a pool corner partition plate 6 having a curved surface shape is installed at the corner of the fuel storage pool 1. Thereby, it has the structure which does not inhibit the visibility from the outside with respect to the inside of the spent fuel storage pool 1. FIG.

このように構成された本実施形態において、地震時にプール水２のスロッシングが生じた場合、プール水２は燃料貯蔵プール１の壁面に押し寄せる前に仕切板３により遮られる。   In the present embodiment configured as described above, when sloshing of the pool water 2 occurs during an earthquake, the pool water 2 is blocked by the partition plate 3 before pressing against the wall surface of the fuel storage pool 1.

仕切板３に押し寄せるプール水２の一部は仕切板３間のスリット５を通過することで乱流が生じ、これによりエネルギのロスが期待され、スロッシングの抑制に貢献する。   A part of the pool water 2 that approaches the partition plate 3 passes through the slits 5 between the partition plates 3 to generate turbulent flow, which is expected to cause energy loss and contribute to the suppression of sloshing.

また、仕切板３の上部を乗り越えてしまうプール水２は仕切板３と燃料貯蔵プール１の壁面との空間Ｓに着水することで、本来プール周壁１ａを越えると予測される溢水量を低減することができる。   Further, the pool water 2 that gets over the upper part of the partition plate 3 is landed in the space S between the partition plate 3 and the wall surface of the fuel storage pool 1, thereby reducing the amount of overflow that is expected to exceed the pool peripheral wall 1a. can do.

さらに、燃料貯蔵プール１内の全周にわたり設置された仕切板３は透明性を有するため、燃料貯蔵プール１内の様子を監視する際に外部から視認性を阻害しない。   Furthermore, since the partition plate 3 installed over the entire circumference in the fuel storage pool 1 has transparency, the visibility from the outside is not hindered when the state in the fuel storage pool 1 is monitored.

このように構成された本実施形態形態において、スロッシングにより燃料貯蔵プール１の隅に押し寄せるプール水２はプール隅仕切板６で受け止められ、プール水２の狭い範囲への集中的な押し寄せを抑制することができる。この結果、燃料貯蔵プール１の隅にて生じる局所的な波高上昇による溢水にも対応することが可能となり、かつ視認性を阻害されることもない。   In the present embodiment configured as described above, the pool water 2 rushing to the corner of the fuel storage pool 1 by sloshing is received by the pool corner partition plate 6, and the concentrated rushing of the pool water 2 to a narrow range is suppressed. be able to. As a result, it is possible to deal with overflow due to a local rise in wave height occurring at the corner of the fuel storage pool 1, and visibility is not hindered.

［第２実施形態（図５）］
図５は、本発明の第２実施形態によるスロッシングおよび溢水抑制装置を示す要部拡大縦断面図である。なお、前述の第１実施形態と同一の構成部分には、図２と同一の符号を付して説明を省略する。 [Second Embodiment (FIG. 5)]
FIG. 5 is an enlarged vertical sectional view of a main part showing a sloshing and overflow control device according to a second embodiment of the present invention. Note that the same components as those in the first embodiment described above are denoted by the same reference numerals as those in FIG.

図５に示すように、本実施形態では燃料貯蔵プール１の内周壁面に沿って仕切板３が傾斜状に設置されている。すなわち、仕切板はプール周壁１ａの上面に設けられた支持部材により支持されており、これらの支持部材は、プール周壁１ａの上面からプール１の内方に向って略水平に突出する鋼材製の棒状をなす仕切板支持用主ロッド部４ａと、この主ロッド部４ａの下端側からプール周壁側に向って傾斜状に立上り、主ロッド部４ａに連結された鋼材製の補助ロッド部４ｃとを備えている。   As shown in FIG. 5, in this embodiment, the partition plate 3 is installed in an inclined shape along the inner peripheral wall surface of the fuel storage pool 1. That is, the partition plate is supported by a support member provided on the upper surface of the pool peripheral wall 1a, and these support members are made of steel and project substantially horizontally from the upper surface of the pool peripheral wall 1a toward the inside of the pool 1. A rod-shaped partition rod support main rod portion 4a and a steel auxiliary rod portion 4c that rises in an inclined manner from the lower end side of the main rod portion 4a toward the peripheral wall of the pool and is connected to the main rod portion 4a. I have.

そして、燃料貯蔵プール１の隅部には曲面形状を有するプール隅仕切板６が設置されている。   Then, a pool corner partition plate 6 having a curved surface shape is installed at the corner of the fuel storage pool 1.

このように構成された本実施形態において、スロッシングにより燃料貯蔵プール１の隅に押し寄せるプール水２はプール隅仕切板６で受け止められ、プール水２の狭い範囲への集中的な押し寄せを抑制することができる。この結果、燃料貯蔵プール１の隅にて生じる局所的な波高上昇による溢水にも対応することが可能となる。   In this embodiment configured as described above, the pool water 2 that is pushed toward the corner of the fuel storage pool 1 by sloshing is received by the pool corner partition plate 6, and the concentrated push of the pool water 2 to a narrow range is suppressed. Can do. As a result, it is possible to cope with overflow due to a local rise in wave height that occurs at the corner of the fuel storage pool 1.

［第３実施形態（図６）］
図６は、本発明の第３実施形態によるスロッシングおよび溢水抑制装置を示す要部拡大縦断面図である。なお、前述の第１実施形態と同一の構成には図２と同一の符号を付して説明を省略する。 [Third Embodiment (FIG. 6)]
FIG. 6 is an enlarged vertical cross-sectional view of a main part showing a sloshing and overflow control device according to a third embodiment of the present invention. In addition, the same code | symbol as FIG. 2 is attached | subjected to the structure same as the above-mentioned 1st Embodiment, and description is abbreviate | omitted.

図６に示すように、燃料貯蔵プール１の側壁に固定されている支持部材４に代えて、スライド機構８付きの鋼材製ロッド７を有するスロッシングおよび溢水抑制装置である。   As shown in FIG. 6, in place of the support member 4 fixed to the side wall of the fuel storage pool 1, a sloshing and overflow control device having a steel rod 7 with a slide mechanism 8 is provided.

スライド機構８は、プール周壁１ａの上面からプール１の内方に向って略水平に突出する鋼材製の棒状をなす仕切板支持用の主ロッド部４ａを、周壁１ａの上面に設置したガイド部材１２によって水平方向にスライド可能に支持させ、係止具１３によって所定位置に固定できる構成としたものである。   The slide mechanism 8 is a guide member in which a main rod portion 4a for supporting a partition plate in the form of a steel rod protruding substantially horizontally from the upper surface of the pool peripheral wall 1a toward the inside of the pool 1 is installed on the upper surface of the peripheral wall 1a. 12 is supported so as to be slidable in the horizontal direction, and can be fixed at a predetermined position by a locking tool 13.

このように構成された本実施形態によれば、水平方向に伸縮可能なスライド機構により、仕切板３を燃料貯蔵プール１の側壁から有為な距離Ｌに調整することが可能となる。   According to the present embodiment configured as described above, the partition plate 3 can be adjusted to a significant distance L from the side wall of the fuel storage pool 1 by the slide mechanism that can be expanded and contracted in the horizontal direction.

この結果、前記各実施形態に加え、燃料交換機による燃料取出し、装荷の作業を阻害しないものとすることができる。   As a result, in addition to the above-described embodiments, it is possible not to impede the work of fuel removal and loading by the fuel changer.

［第４実施形態（図７）］
図７は、本発明の第３実施形態によるスロッシングおよび溢水抑制装置を示す要部拡大縦断面図である。なお、前述の第１実施形態と同一の構成には図２と同一の符号を付して説明を省略する。 [Fourth Embodiment (FIG. 7)]
FIG. 7 is an enlarged vertical cross-sectional view of a main part showing a sloshing and overflow control device according to a third embodiment of the present invention. In addition, the same code | symbol as FIG. 2 is attached | subjected to the structure same as the above-mentioned 1st Embodiment, and description is abbreviate | omitted.

本実施形態が第１実施形態と異なる点は、第１実施形態に示した平板状の仕切板３に代えて、仕切板を波形仕切板８ａとした点にある。すなわち、この波形仕切板８ａは板厚方向に曲げを形成して、板面を波形に構成したものである。そして、図５に示した第２実施形態と同様に、上端側がプール１の内方に向って水平に突出した支持部材４の先端に連結支持されており、下端側がプール周壁内面側に接する配置で設けられている。   The present embodiment differs from the first embodiment in that the partition plate is a corrugated partition plate 8a instead of the flat partition plate 3 shown in the first embodiment. That is, the corrugated partition plate 8a is formed by bending in the plate thickness direction so that the plate surface is corrugated. And like 2nd Embodiment shown in FIG. 5, the upper end side is connected and supported by the front-end | tip of the supporting member 4 which protruded horizontally toward the inner side of the pool 1, and the lower end side touches the pool surrounding wall inner surface side. Is provided.

このように構成された本実施形態においては、地震時によるスロッシング発生時には波形仕切板８ａの表面を通過するプール水２に対し、その形状により回転成分が生じ、これによりプール水２に乱流が生じる。   In the present embodiment configured as described above, when sloshing occurs due to an earthquake, a rotational component is generated due to the shape of the pool water 2 passing through the surface of the corrugated partition plate 8a, thereby causing turbulence in the pool water 2. Arise.

この結果、前記各実施形態と同等以上のスロッシングのエネルギ損失が期待され、スロッシング抑制について、より寄与することができ、溢水量の低減が図れるものとなる。   As a result, an energy loss of sloshing equivalent to or higher than that of each of the above embodiments is expected, and the sloshing suppression can be further contributed, and the amount of overflow can be reduced.

本発明の第１実施形態を示す要部拡大斜視図。The principal part expansion perspective view which shows 1st Embodiment of this invention. 本発明の第１実施形態を示す全体平面図。1 is an overall plan view showing a first embodiment of the present invention. 図２のＡ−Ａ線断面図。FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. 図３のＢ矢視図。B arrow view of FIG. 本発明の第２実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows 2nd Embodiment of this invention. 本発明の第３実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows 3rd Embodiment of this invention. 本発明の第４実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows 4th Embodiment of this invention.

符号の説明Explanation of symbols

１‥使用済燃料貯蔵プール
１ａ‥プール周壁
１ｂ‥作業床
１ｃ‥内周壁
２‥プール水
２ａ‥液面
３‥仕切板
４‥支持部材
４ａ‥主ロッド部
４ｂ‥補助ロッド部
４ｃ‥補助ロッド部
５‥プール周壁側スリット
６‥プール隅仕切板
７‥鋼材製ロッド
８‥スライド機構
８ａ‥波形仕切板
１１‥固定部材
１２‥ガイド部材
Ｓ‥間隔
Ｌ‥距離 DESCRIPTION OF SYMBOLS 1 ... Spent fuel storage pool 1a ... Pool peripheral wall 1b ... Work floor 1c ... Inner peripheral wall 2 ... Pool water 2a ... Liquid level 3 ... Partition plate 4 ... Support member 4a ... Main rod part 4b ... Auxiliary rod part 4c ... Auxiliary rod part 5. Pool peripheral wall side slit 6 Pool corner partition plate 7 Steel rod 8 Slide mechanism 8a Wave partition plate 11 Fixing member 12 Guide member S Spacing L Distance

Claims (6)

プール内に収容された水の少なくとも液面部位の上下位置に、前記プールの周壁内面に沿ってプール液面からプール水内部側に垂下する複数枚の横長な縦板状の仕切板を上下方向にそれぞれ隙間をあけて配設し、これらの仕切板と前記プール内周壁との間に一定の間隔を設定し、この間隔部位に、地震時に前記仕切板の頂部を超える水を導入することにより、溢水エネルギを小とする設定としたことを特徴とするスロッシングおよび溢水抑止装置。 A plurality of horizontally long vertical partition plates hanging vertically from the pool liquid surface to the pool water inner side along the inner surface of the peripheral wall of the pool at the vertical position of at least the liquid surface portion of the water contained in the pool in the vertical direction By providing a gap between each partition plate and the inner wall of the pool, and by introducing water exceeding the top of the partition plate at the time of an earthquake. A sloshing and overflow prevention device, characterized in that the overflow energy is set to be small. 前記プールは原子力発電プラントにおける燃料貯蔵プールであり、このプールは平面視略四角形状でプール周壁隅角部が円弧状をなすものであり、このプール周壁隅角部に配置される仕切板を、前記プール周壁の各隅角部内面に沿う平面視円弧形状とした請求項１記載のスロッシングおよび溢水抑止装置。 The pool is a fuel storage pool in a nuclear power plant, and the pool has a substantially quadrangular shape in plan view, and the pool peripheral wall corner portion has an arc shape, and a partition plate disposed in the pool peripheral wall corner portion, The sloshing and overflow prevention device according to claim 1, which has a circular arc shape in plan view along an inner surface of each corner portion of the pool peripheral wall. 前記仕切板は透明性を有する素材によって構成されている請求項１または２記載のスロッシングおよび溢水抑止装置。 The sloshing and overflow prevention device according to claim 1 or 2, wherein the partition plate is made of a transparent material. 前記仕切板は前記プール周壁の上面に設けられた支持部材により支持されており、これらの支持部材は、前記プール周壁の上面からプール内方に向って略水平に突出する鋼材製の棒状をなす仕切板支持用主ロッド部と、この主ロッド部の下端側からプール周壁側に向って傾斜状に立上り前記主ロッド部に連結された鋼材製の補助ロッド部とを備えている請求項１ないし３のいずれか１項記載のスロッシングおよび溢水抑止装置。 The partition plate is supported by support members provided on the upper surface of the pool peripheral wall, and these support members form a steel bar shape that protrudes substantially horizontally from the upper surface of the pool peripheral wall toward the inside of the pool. A partition rod supporting main rod portion and a steel auxiliary rod portion that rises in an inclined manner from the lower end side of the main rod portion toward the pool peripheral wall and is connected to the main rod portion. 4. The sloshing and overflow prevention device according to any one of 3 above. 前記仕切板はプール側壁からの設置距離が可変な構成とされている請求項１ないし４のいずれか１項記載のスロッシングおよび溢水抑止装置。 The sloshing and overflow control device according to any one of claims 1 to 4, wherein the partition plate is configured such that an installation distance from a pool side wall is variable. 前記仕切板は波形板材からなる請求項１ないし５のいずれか１項記載のスロッシングおよび溢水抑止装置。 The sloshing and overflow prevention device according to any one of claims 1 to 5, wherein the partition plate is made of a corrugated plate material.
JP2008265485A 2008-10-14 2008-10-14 Sloshing and overflow control device Expired - Fee Related JP4896942B2 (en)

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Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5590590A (en) * 1978-12-28 1980-07-09 Matsumura Sekiyu Kenkyusho:Kk Cutting oil
JPS5985995A (en) * 1982-11-10 1984-05-18 株式会社日立製作所 Reactor control rod drive mechanisms
JPS59171893A (en) * 1983-03-18 1984-09-28 株式会社東芝 Fuel pool device
JPS6035095A (en) * 1983-08-05 1985-02-22 Idemitsu Kosan Co Ltd Fluid for traction drive
JPS60243596A (en) * 1984-05-18 1985-12-03 株式会社東芝 Sloshing preventive device
JPS60243597A (en) * 1984-05-18 1985-12-03 株式会社東芝 Fuel pool facility
JPS61104990A (en) * 1984-10-25 1986-05-23 株式会社東芝 Liquid-surface rocking inhibitor
JPS61115876A (en) * 1984-10-31 1986-06-03 株式会社東芝 Sloshing preventive device
JPS61165493A (en) * 1985-12-28 1986-07-26 植村　厚一 Method of propelling excavator
JPS61271499A (en) * 1985-05-27 1986-12-01 鹿島建設株式会社 Water controller
JPS6230994A (en) * 1985-08-02 1987-02-09 株式会社東芝 Breakwater facility for pool water in nuclear reactor pool
JPS62215893A (en) * 1986-03-18 1987-09-22 株式会社東芝 Spent fuel storage pool
JPS62293195A (en) * 1986-06-13 1987-12-19 株式会社東芝 Nuclear-reactor storage pool
JPH02242778A (en) * 1989-03-13 1990-09-27 Hitachi Ltd Liquid surface splashing preventive apparatus
JPH06146248A (en) * 1992-11-13 1994-05-27 Aqua Tec Kk River refuse collecting facility
JPH06345184A (en) * 1993-06-15 1994-12-20 Mitsubishi Heavy Ind Ltd Tank with device for suppressing liquid fluctuation
JPH0815482A (en) * 1994-06-28 1996-01-19 Toshiba Corp Spent fuel storage pool equipment
JPH08101296A (en) * 1994-09-30 1996-04-16 Toshiba Corp Sloshing overflow preventer
JP2006298481A (en) * 2005-04-25 2006-11-02 Tanoshi Kawada Anti-sloshing device in liquid tank
JP2006317230A (en) * 2005-05-11 2006-11-24 Toshiba Corp Fence structure of fuel storage pool
JP2006329799A (en) * 2005-05-26 2006-12-07 Toshiba Corp Sloshing overflow prevention device
JP2007163204A (en) * 2005-12-12 2007-06-28 Toshiba Corp Reactor building and method for renovating it
JP2009216538A (en) * 2008-03-11 2009-09-24 Taisei Corp Sloshing overflow preventing device

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5590590A (en) * 1978-12-28 1980-07-09 Matsumura Sekiyu Kenkyusho:Kk Cutting oil
JPS5985995A (en) * 1982-11-10 1984-05-18 株式会社日立製作所 Reactor control rod drive mechanisms
JPS59171893A (en) * 1983-03-18 1984-09-28 株式会社東芝 Fuel pool device
JPS6035095A (en) * 1983-08-05 1985-02-22 Idemitsu Kosan Co Ltd Fluid for traction drive
JPS60243596A (en) * 1984-05-18 1985-12-03 株式会社東芝 Sloshing preventive device
JPS60243597A (en) * 1984-05-18 1985-12-03 株式会社東芝 Fuel pool facility
JPS61104990A (en) * 1984-10-25 1986-05-23 株式会社東芝 Liquid-surface rocking inhibitor
JPS61115876A (en) * 1984-10-31 1986-06-03 株式会社東芝 Sloshing preventive device
JPS61271499A (en) * 1985-05-27 1986-12-01 鹿島建設株式会社 Water controller
JPS6230994A (en) * 1985-08-02 1987-02-09 株式会社東芝 Breakwater facility for pool water in nuclear reactor pool
JPS61165493A (en) * 1985-12-28 1986-07-26 植村　厚一 Method of propelling excavator
JPS62215893A (en) * 1986-03-18 1987-09-22 株式会社東芝 Spent fuel storage pool
JPS62293195A (en) * 1986-06-13 1987-12-19 株式会社東芝 Nuclear-reactor storage pool
JPH02242778A (en) * 1989-03-13 1990-09-27 Hitachi Ltd Liquid surface splashing preventive apparatus
JPH06146248A (en) * 1992-11-13 1994-05-27 Aqua Tec Kk River refuse collecting facility
JPH06345184A (en) * 1993-06-15 1994-12-20 Mitsubishi Heavy Ind Ltd Tank with device for suppressing liquid fluctuation
JPH0815482A (en) * 1994-06-28 1996-01-19 Toshiba Corp Spent fuel storage pool equipment
JPH08101296A (en) * 1994-09-30 1996-04-16 Toshiba Corp Sloshing overflow preventer
JP2006298481A (en) * 2005-04-25 2006-11-02 Tanoshi Kawada Anti-sloshing device in liquid tank
JP2006317230A (en) * 2005-05-11 2006-11-24 Toshiba Corp Fence structure of fuel storage pool
JP2006329799A (en) * 2005-05-26 2006-12-07 Toshiba Corp Sloshing overflow prevention device
JP2007163204A (en) * 2005-12-12 2007-06-28 Toshiba Corp Reactor building and method for renovating it
JP2009216538A (en) * 2008-03-11 2009-09-24 Taisei Corp Sloshing overflow preventing device

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