JP2009150703A - Spent fuel pool water monitoring device - Google Patents

Spent fuel pool water monitoring device Download PDF

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JP2009150703A
JP2009150703A JP2007327324A JP2007327324A JP2009150703A JP 2009150703 A JP2009150703 A JP 2009150703A JP 2007327324 A JP2007327324 A JP 2007327324A JP 2007327324 A JP2007327324 A JP 2007327324A JP 2009150703 A JP2009150703 A JP 2009150703A
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fuel pool
spent fuel
water level
detector
water
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JP4922146B2 (en
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Fujio Shiraishi
藤雄 白石
Hideo Namihira
英夫 波平
Kensaku Ando
健作 安藤
Tatsuo Kagifuku
辰緒 鍵福
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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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliable spent fuel pool water monitoring device capable of continuously monitoring the water level and inundation of spent fuel pool water by avoiding a crane operation range and without damaging a fuel pool liner. <P>SOLUTION: The spent fuel pool water monitoring device comprises: instrument mount supports provided on the surface of an operation floor from the wall surface of a spent fuel pool; and a water level detector mounted to a part provided on the wall surface of the spent fuel pool in the instrument mount supports. A part provided on the surface of the operation floor in the instrument mount supports is fixed to the surface of the operation floor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本件発明は、原子力発電プラントの使用済燃料プール水の監視装置に関し、特に、燃料プールの水位及び溢水を連続的に監視することができる使用済燃料プール水監視装置に関する。   The present invention relates to a spent fuel pool water monitoring device for a nuclear power plant, and more particularly to a spent fuel pool water monitoring device capable of continuously monitoring the water level and overflow of a fuel pool.

原子力発電プラントの使用済燃料プールは、図３及び図４に示すように燃料プールの上方に使用済燃料を搬送する燃料交換用クレーン１４が設置されており、使用済燃料を搬送及び着脱操作する。この燃料交換用クレーン１４の使用済燃料プールにおける動作範囲（以下、「クレーン動作範囲」という。）は図３の１１に示される領域である。   As shown in FIGS. 3 and 4, the spent fuel pool of the nuclear power plant is provided with a fuel change crane 14 that transports spent fuel above the fuel pool, and transports and detaches the spent fuel. . The operation range (hereinafter referred to as “crane operation range”) of the spent fuel pool of the refueling crane 14 is an area indicated by 11 in FIG.

使用済燃料プールに水位計等の各種機器を配置する際、以下の各種制約を考慮しなければならない。まず、クレーン動作範囲の貯蔵プールにはクレーンの走行の妨害となるため、計器が設置できないこと、また、万が一にも使用済燃料貯蔵プールからの漏えいが無いように燃料プール下部に貫通孔を設置してはならないとしていることから水位計として一般に採用している差圧式水位計測方式は採用できないこと、また、燃料プール内に落下した場合に落下物が取り出し不可であることによる燃料プール内への異物混入防止対策を考慮しなければならないこと、さらに、燃料プール水漏えい防止の観点から燃料プールのライナーへの溶接が不可であること、等を考慮して設計しなければならない。   When placing various devices such as a water level gauge in the spent fuel pool, the following various restrictions must be taken into account. First of all, the crane cannot be installed in the storage pool in the crane operating range, and a through hole is installed in the lower part of the fuel pool to prevent leakage from the spent fuel storage pool. Therefore, it is impossible to adopt the differential pressure type water level measurement method that is generally adopted as a water level gauge, and the fallen object cannot be taken out when falling into the fuel pool. It must be designed in consideration of measures to prevent foreign matter contamination, and in addition, from the viewpoint of preventing fuel pool water leakage, welding to the fuel pool liner is not possible.

一方、燃料プールの壁面に設けられたガイドにフロート式水位計を設置し、燃料プール水位の定点監視を行うものも知られているが（特許文献１）、フロート式水位計は応答特性が低く、燃料プール水位について信頼性の高いトレンド監視が困難であるとともに、フロートを上下動させるためのフロート保持孔を燃料プールの周壁に設けるため、燃料プールの周壁及びライナーを改造する必要があった。   On the other hand, a float type water level gauge is installed on a guide provided on the wall surface of the fuel pool to monitor the fuel pool water level at a fixed point (Patent Document 1). However, the float type water level gauge has low response characteristics. In addition, it is difficult to monitor the fuel pool water level with high reliability, and it is necessary to modify the peripheral wall and liner of the fuel pool in order to provide a float holding hole for moving the float up and down in the peripheral wall of the fuel pool.

また、近年、使用済燃料等の放射性物質を保管しているタンクの水位監視が義務づけられており、水位連続監視の要求は高くなっている。加えて、現状のフロート式水位計の点検は直接フロートを動作させて動作確認試験を行っているが、計測原理上フロート部は水面下に設置せざるを得ず、動作点を計測できないという、保守点検、トレーサビリティ上の問題もクローズアップされている。   In recent years, it has become mandatory to monitor the water level of tanks that store radioactive materials such as spent fuel, and the demand for continuous water level monitoring has increased. In addition, the current float-type water level meter is inspected by operating the float directly, but the float principle has to be installed under the surface of the water, and the operating point cannot be measured. Maintenance inspections and traceability issues are also highlighted.

さらに、地震発生時にスロッシング現象により水面に揺動が生じ、燃料プールからオペレーションフロア床面（以下、オペフロ床面という。）に溢水した場合に、レベルスイッチ高警報により水位変動の有無は確認可能であるが、水位変動のトレンド、オーバーフローの状況については、現状の計測方式では、即座に確認できない状況である。
特開平８−１０１２９６号公報 In addition, if the water surface fluctuates due to the sloshing phenomenon when an earthquake occurs, and the water overflows from the fuel pool to the operation floor (hereinafter referred to as the “operation floor”), it is possible to confirm whether the water level has fluctuated by the level switch high alarm. However, the trend of water level fluctuation and the overflow situation cannot be immediately confirmed by the current measurement method.
JP-A-8-101296

上述したように、原子力発電プラントの使用済燃料貯蔵プールは、プール上面を燃料交換用クレーンが動作するためクレーン動作範囲には計器が設置できないこと、万が一にも使用済燃料貯蔵プールからの漏えいがないようにプール下部に貫通孔を設置してはならないとしていることから水位計として一般に採用している差圧式水位計測方式は採用できないこと、燃料プール内に落下した場合に落下物が取り出し不可であることによる燃料プール内への異物混入防止対策を考慮しなければならないこと、さらに、燃料プール水漏えい防止の観点から燃料プールのライナーへの溶接不可であること等の制約事項をクリアし、構造が簡単で、燃料プールの水位及び溢水の連続監視が可能な高信頼性の使用済燃料プール水監視装置を提供することを目的とする。   As described above, in the spent fuel storage pool of nuclear power plants, the crane for exchanging fuel operates on the upper surface of the pool, so that no instrument can be installed in the crane operating range, and there is a possibility of leakage from the spent fuel storage pool. Because it is said that a through hole should not be installed at the bottom of the pool, the differential pressure type water level measurement method generally used as a water level meter cannot be used, and falling objects cannot be taken out when falling into the fuel pool. It is necessary to consider measures to prevent foreign matter from entering the fuel pool due to certain conditions, and from the standpoint of preventing fuel pool water leakage, clear restrictions such as the inability to weld the fuel pool liner. To provide a highly reliable spent fuel pool water monitoring device that is simple and can continuously monitor fuel pool water level and overflow. The target.

本発明は、上記の問題を解決するためになされたもので、使用済燃料プール壁面からオペレーションフロア床面に設けられた計器取付サポートと、前記計器取付サポートのうち前記使用済燃料プール壁面に設けられた部分に取り付けられた水位検出器とを備え、前記計器取付サポートのうち前記オペレーションフロア床面に設けられた部分を前記オペレーションフロア床面に固定することを特徴とする。   The present invention has been made to solve the above-described problem, and is provided on the spent fuel pool wall surface of the instrument mounting support provided on the floor surface of the operation floor from the spent fuel pool wall surface. And a water level detector attached to the portion, and a portion of the instrument mounting support provided on the operation floor is fixed to the operation floor.

本発明によれば、クレーン動作範囲を回避するとともに燃料プールライナーを損傷することなく、燃料プール水の水位及び溢水を連続的に監視することが可能な高信頼性の使用済燃料プール水監視装置を提供することができる。   According to the present invention, a highly reliable spent fuel pool water monitoring apparatus capable of continuously monitoring the water level and overflow of the fuel pool water while avoiding the crane operating range and damaging the fuel pool liner. Can be provided.

以下、本発明に係る使用済燃料プール水監視装置の実施形態について、図面を参照して説明する。   Hereinafter, an embodiment of a spent fuel pool water monitoring device according to the present invention will be described with reference to the drawings.

（第１の実施形態）
本発明の第１の実施形態に係る使用済燃料プール水監視装置を図１及び図２を用いて説明する。
図１は第１の実施形態に係る使用済燃料プール水監視装置が適用された燃料プールを上方からみた平面図で、図２はその側断面図である。 (First embodiment)
A spent fuel pool water monitoring apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a plan view of a fuel pool to which the spent fuel pool water monitoring apparatus according to the first embodiment is applied, and FIG. 2 is a side sectional view thereof.

水位検出器４が設置される使用済燃料プール１の周壁部に計器取付サポート３が取り付けられる。図１の例では、水位検出器４は燃料プールの各角部に取り付けられるため、計器取付サポート３も同箇所に設置される。   An instrument mounting support 3 is attached to the peripheral wall portion of the spent fuel pool 1 where the water level detector 4 is installed. In the example of FIG. 1, since the water level detector 4 is attached to each corner of the fuel pool, the instrument attachment support 3 is also installed at the same location.

計器取付サポート３は、図２に示されるように、オペフロ床面に延びる水平部３ａと使用済燃料プール壁面に延びる垂直部３ｂを有し、オペフロ床面２に延びる水平部３ａはアンカー１０によりオペフロ床面２に固定され、一方、垂直部３ｂはライナー１２に密着するように取り付けられる。   As shown in FIG. 2, the instrument mounting support 3 has a horizontal portion 3 a extending to the operation floor surface and a vertical portion 3 b extending to the spent fuel pool wall surface. The horizontal portion 3 a extending to the operation floor surface 2 is The operation floor is fixed to the floor 2, while the vertical portion 3 b is attached so as to be in close contact with the liner 12.

水位検出器４は上記計器取付サポート３に適当な締結手段によって固定され、また、水位検出器４の横揺れを防止するために水平方向に延びる固定部材１３が水位検出器４間に取り付け設置される。   The water level detector 4 is fixed to the instrument mounting support 3 by appropriate fastening means, and a fixing member 13 extending in the horizontal direction is mounted between the water level detectors 4 to prevent the water level detector 4 from rolling. The

計器取付サポート３には、燃料プール水面下に延在する検出部９を有する水位検出器４が取り付けられ、水位検出器４からの信号は、水位変換器５、指示計６を介して警報設定器７に出力される。   A water level detector 4 having a detector 9 extending below the water surface of the fuel pool is attached to the meter mounting support 3, and a signal from the water level detector 4 is set as an alarm via a water level converter 5 and an indicator 6. Is output to the device 7.

なお、この第１の実施形態に係る使用済燃料プール水監視装置では、水位検出器４及びその計器取付サポート３は燃料プール１の各角部に設置されているが、他の位置、例えば、燃料プールの周辺部に設置してもよく、また、その設置数も任意に変更できることはもちろんである。さらに、検出部として、電極、超音波、電波、等を利用した既存の水位検出部を用いることができる。   In the spent fuel pool water monitoring apparatus according to the first embodiment, the water level detector 4 and its instrument mounting support 3 are installed at each corner of the fuel pool 1, but other positions, for example, Of course, it may be installed in the periphery of the fuel pool, and the number of installations can be arbitrarily changed. Furthermore, an existing water level detection unit using electrodes, ultrasonic waves, radio waves, or the like can be used as the detection unit.

この第１の実施形態に係る使用済燃料プール水監視装置によれば、使用済燃料プール壁面に水位検出器４を計器取付サポート３を介して取り付けることにより、クレーン動作範囲１１を回避するとともに料プールライナー１２を損傷することなく、燃料プール水位を連続的に監視することができる。   According to the spent fuel pool water monitoring apparatus according to the first embodiment, by attaching the water level detector 4 to the spent fuel pool wall surface via the instrument mounting support 3, the crane operating range 11 can be avoided and the fee can be reduced. The fuel pool water level can be continuously monitored without damaging the pool liner 12.

（第２の実施形態）
本発明の第２の実施形態に係る使用済燃料プール水監視装置を、図３〜図５を用いて説明する。
図３は本第２の実施形態に係る使用済燃料プール水監視装置が適用された燃料プールを上方からみた平面図で、図４はその側断面図、及び図５は監視装置の動作概要図である。 (Second Embodiment)
A spent fuel pool water monitoring apparatus according to a second embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a plan view of a fuel pool to which the spent fuel pool water monitoring apparatus according to the second embodiment is applied as seen from above, FIG. 4 is a side sectional view thereof, and FIG. 5 is an operation schematic diagram of the monitoring apparatus. It is.

本第２の実施形態では、使用済燃料プール１上方の原子炉建屋の天井１５に超音波もしくは電波を使用した水位検出器４を少なくとも２か所以上設置し、また、それらの検出器からの信号を選択的に出力する制御装置を設置する（図５）。燃料移送用クレーン１４はクレーン動作範囲１１内を移動するが、燃料移送用クレーン１４が一つの水位検出器の測定範囲に入ってきても、前記制御装置によって他の水位検出器４に切り替えることにより使用済燃料プールの水位を連続的に監視することができる。なお、水位検出器４としてフロート式式検出器又はディスプレッサ式検出器も用いることができる。   In the second embodiment, at least two or more water level detectors 4 using ultrasonic waves or radio waves are installed on the ceiling 15 of the reactor building above the spent fuel pool 1, and from these detectors, A control device that selectively outputs signals is installed (FIG. 5). Although the fuel transfer crane 14 moves within the crane operating range 11, even if the fuel transfer crane 14 enters the measurement range of one water level detector, it is switched to another water level detector 4 by the control device. The water level of the spent fuel pool can be continuously monitored. A float type detector or a displacer type detector can also be used as the water level detector 4.

この第２の実施形態に係る使用済燃料プール水監視装置によれば、使用済燃料プールの天井に複数の水位検出器４を取り付けることにより、クレーン動作による測定中断を水位検出器４の切り替えによりカバーするとともに燃料プールライナー１２を損傷することなく、燃料プール水位を連続的に監視することができる。   According to the spent fuel pool water monitoring apparatus according to the second embodiment, by attaching a plurality of water level detectors 4 to the ceiling of the spent fuel pool, measurement interruption due to crane operation can be stopped by switching the water level detector 4. The fuel pool water level can be continuously monitored without covering and damaging the fuel pool liner 12.

（第３の実施形態）
本発明の第３の実施形態に係る使用済燃料プール水監視装置を図６及び図７を用いて説明する。
図６は本第３の実施形態に係る使用済燃料プール水監視装置が適用された燃料プールを上方からみた平面図で、図７はその側断面図である。 (Third embodiment)
A spent fuel pool water monitoring apparatus according to a third embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is a plan view of a fuel pool to which a spent fuel pool water monitoring apparatus according to the third embodiment is applied as seen from above, and FIG. 7 is a side sectional view thereof.

本第３の実施形態では、使用済燃料プール１のオペフロ面１に使用済燃料プール１を取り囲むように堰１６を設け、その内側のオペフロ面に溢水検出器１７及び溢水を燃料プールに戻すためのポンプ１８を設けている。   In the third embodiment, a weir 16 is provided on the operating surface 1 of the spent fuel pool 1 so as to surround the spent fuel pool 1, and the overflow detector 17 and the overflow are returned to the fuel pool on the inner operating surface. The pump 18 is provided.

上記構成により、地震等によって燃料プール水がオペフロ床面に溢水しても、堰１６がオペフロ床面２に溢水した燃料プール水を閉じ込めることにより溢水の拡散を防止し、併せて、堰１６近傍のオペフロ床面２に設けた溢水検出器１７によりオペフロ床面への溢水を検出し、警報設定器７にて警報を発する。また、溢水した分使用済燃料プールの水面８が低下するため、溢水を検知した後、ポンプ１８にて使用済燃料プール１に溢水を戻し水面の早期復旧を図る。   With the above configuration, even if the fuel pool water overflows the operation floor due to an earthquake or the like, the weir 16 prevents the overflow of the overflow by confining the fuel pool water overflowing the operation floor 2, and the vicinity of the weir 16 The overflow detector 17 provided on the operating floor 2 detects the overflow on the operating floor, and the alarm setter 7 issues an alarm. Further, since the water level 8 of the spent fuel pool decreases due to the overflow, after the overflow is detected, the pump 18 returns the overflow to the spent fuel pool 1 so as to restore the water surface early.

この第３の実施形態によれば、オペフロ床面に堰と溢水検出器を設置することにより、オペフロ床面への溢水を確実に監視することができるとともに、上記第１及び第２の実施形態に係るプール水監視装置と併用することにより、燃料プールの水位及び溢水を連続的に監視することができる。   According to the third embodiment, by installing the weir and the overflow detector on the operation floor, the overflow to the operation floor can be reliably monitored, and the first and second embodiments described above. By using together with the pool water monitoring apparatus according to the above, the water level and overflow of the fuel pool can be continuously monitored.

本発明の第１の実施形態に係る使用済燃料貯蔵プール水監視装置の平面図。The top view of the spent fuel storage pool water monitoring apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る使用済燃料貯蔵プール水監視装置の側断面図。The side sectional view of the spent fuel storage pool water monitoring device concerning a 1st embodiment of the present invention. 本発明の第２の実施形態に係る使用済燃料貯蔵プール水監視装置の平面図。The top view of the spent fuel storage pool water monitoring apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係る使用済燃料貯蔵プール水監視装置の側断面図。The sectional side view of the spent fuel storage pool water monitoring apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係る制御装置の概念図。The conceptual diagram of the control apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係る使用済燃料貯蔵プール水監視装置の平面図。The top view of the spent fuel storage pool water monitoring apparatus which concerns on the 3rd Embodiment of this invention. 本発明の第３の実施形態に係る使用済燃料貯蔵プール水監視装置の側断面図。The side sectional view of the spent fuel storage pool water monitoring device concerning a 3rd embodiment of the present invention.

符号の説明Explanation of symbols

１…使用済燃料貯蔵プール、２…オペレーションフロア床面、３…計器取付サポート、３ａ…水平部、３ｂ…垂直部、４…水位検出器、５…水位変換器、６…指示計、７…警報設定器、８…プール水面、９…検出部、１０…アンカー、１１…クレーン動作範囲、１２…ライナー、１３…固定部材、１４…燃料移送クレーン、１５…天井、１６…堰、１７…溢水検出器、１８…ポンプ。   DESCRIPTION OF SYMBOLS 1 ... Spent fuel storage pool, 2 ... Operation floor floor surface, 3 ... Instrument mounting support, 3a ... Horizontal part, 3b ... Vertical part, 4 ... Water level detector, 5 ... Water level converter, 6 ... Indicator, 7 ... Alarm setter 8 ... Pool water surface 9 ... Detector 10 ... Anchor 11 ... Crane operating range 12 ... Liner 13 ... Fixing member 14 ... Fuel transfer crane 15 ... Ceiling 16 ... Weir 17 ... Overflow Detector, 18 ... pump.

Claims (9)

使用済燃料プール壁面からオペレーションフロア床面に設けられた計器取付サポートと、前記計器取付サポートのうち前記使用済燃料プール壁面に設けられた部分に取り付けられた水位検出器とを備え、前記計器取付サポートのうち前記オペレーションフロア床面に設けられた部分を前記オペレーションフロア床面に固定することを特徴とする使用済燃料プール水監視装置。   An instrument mounting support provided on the operation floor from the wall surface of the spent fuel pool, and a water level detector attached to a portion of the instrument mounting support provided on the wall surface of the spent fuel pool. A spent fuel pool water monitoring device characterized in that a portion of the support provided on the operation floor is fixed to the operation floor. 前記水位検出器を複数設置するとともに、前記水位検出器相互を固定部材により固定することを特徴とする請求項１記載の使用済燃料プール水監視装置。   2. The spent fuel pool water monitoring apparatus according to claim 1, wherein a plurality of the water level detectors are installed and the water level detectors are fixed to each other by a fixing member. 前記計器取付サポートのうち前記使用済燃料プール壁面に設けられた部分は使用済燃料プールのライナーに密着するように取り付けられていることを特徴とする請求項１又は２記載の使用済燃料プール水監視装置。   The spent fuel pool water according to claim 1 or 2, wherein a portion of the instrument mounting support provided on the wall of the spent fuel pool is attached so as to be in close contact with a liner of the spent fuel pool. Monitoring device. 前記水位検出器は、超音波式検出器、電波式検出器又は電極式検出器であることを特徴とする請求項１乃至３いずれか１項に記載の使用済燃料プール水監視装置。   4. The spent fuel pool water monitoring apparatus according to claim 1, wherein the water level detector is an ultrasonic detector, a radio wave detector, or an electrode detector. 5. 使用済燃料プール上方の原子炉建屋の天井もしくはその近傍に設けられた少なくとも２つ以上の水位検出器と、前記水位検出器からの信号を選択的に出力する制御装置とを有することを特徴とする使用済燃料プール水監視装置。   It has at least two or more water level detectors provided on or near the ceiling of the reactor building above the spent fuel pool, and a control device that selectively outputs a signal from the water level detector. Used fuel pool water monitoring device. 前記水位検出器は、超音波式検出器、電波式検出器、フロート式式検出器又はディスプレッサ式検出器であることを特徴とする請求項５に記載の使用済燃料プール水監視装置。   6. The spent fuel pool water monitoring apparatus according to claim 5, wherein the water level detector is an ultrasonic detector, a radio wave detector, a float detector, or a displacer detector. 使用済燃料プールを取り囲むようにオペレーションフロア床面に堰を設置したことを特徴とする請求項１乃至６いずれか１項に記載の使用済燃料プール水監視装置。   The spent fuel pool water monitoring device according to any one of claims 1 to 6, wherein a weir is installed on the floor of the operation floor so as to surround the spent fuel pool. 前記堰近傍に溢水検出器を設置したことを特徴とする請求項７記載の使用済燃料プール水監視装置。   The spent fuel pool water monitoring device according to claim 7, wherein an overflow detector is installed in the vicinity of the weir. 溢水を使用済燃料プールに戻すポンプを前記オペレーションフロア床面に設けたことを特徴とする請求項７又は８記載の使用済燃料プール水監視装置。   The spent fuel pool water monitoring apparatus according to claim 7 or 8, wherein a pump for returning overflow water to the spent fuel pool is provided on the floor of the operation floor.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013104748A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level monitoring system and water level detection method for fuel storage pool
DE102012207473A1 (en) * 2012-05-04 2013-11-07 Areva Gmbh Fuel storage tank of a nuclear power plant
JP2014055942A (en) * 2012-09-11 2014-03-27 Ge-Hitachi Nuclear Energy Americas Llc Method and system for measuring liquid level of spent fuel pool without using electrical power
DE102013222280A1 (en) * 2013-11-01 2014-11-20 Areva Gmbh Fuel storage tank of a nuclear power plant
JP2015132549A (en) * 2014-01-14 2015-07-23 株式会社東芝 Measuring apparatus mounting arrangement for spent fuel pool

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105199A (en) * 1978-12-14 1980-08-12 Philips Nv Radar chaff launcher and radar chaff bundle therefor
JPS5759198A (en) * 1980-09-26 1982-04-09 Tokyo Shibaura Electric Co Air conditioner duct closing device for fuel pool
JPS57139696A (en) * 1981-02-23 1982-08-28 Tokyo Shibaura Electric Co Nuclear fuel storing device
JPS6045187A (en) * 1983-08-03 1985-03-11 株式会社東芝 Preventive device for overflow of water
JPS60179898A (en) * 1984-02-27 1985-09-13 東芝テック株式会社 Electronic cash register
JPS60186794A (en) * 1984-03-06 1985-09-24 株式会社東芝 Spent fuel storage pool
JPS61165493A (en) * 1985-12-28 1986-07-26 植村　厚一 Method of propelling excavator
JPS6282397A (en) * 1985-10-08 1987-04-15 株式会社東芝 Controller for water level of spent nuclear fuel storage pool
JPH04105098A (en) * 1990-08-27 1992-04-07 Hitachi Ltd Facility against overflow
JPH0798240A (en) * 1993-09-28 1995-04-11 Toshiba Corp Ultrasonic water level measurement method and device
JPH08101296A (en) * 1994-09-30 1996-04-16 Toshiba Corp Sloshing overflow preventer

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105199A (en) * 1978-12-14 1980-08-12 Philips Nv Radar chaff launcher and radar chaff bundle therefor
JPS5759198A (en) * 1980-09-26 1982-04-09 Tokyo Shibaura Electric Co Air conditioner duct closing device for fuel pool
JPS57139696A (en) * 1981-02-23 1982-08-28 Tokyo Shibaura Electric Co Nuclear fuel storing device
JPS6045187A (en) * 1983-08-03 1985-03-11 株式会社東芝 Preventive device for overflow of water
JPS60179898A (en) * 1984-02-27 1985-09-13 東芝テック株式会社 Electronic cash register
JPS60186794A (en) * 1984-03-06 1985-09-24 株式会社東芝 Spent fuel storage pool
JPS6282397A (en) * 1985-10-08 1987-04-15 株式会社東芝 Controller for water level of spent nuclear fuel storage pool
JPS61165493A (en) * 1985-12-28 1986-07-26 植村　厚一 Method of propelling excavator
JPH04105098A (en) * 1990-08-27 1992-04-07 Hitachi Ltd Facility against overflow
JPH0798240A (en) * 1993-09-28 1995-04-11 Toshiba Corp Ultrasonic water level measurement method and device
JPH08101296A (en) * 1994-09-30 1996-04-16 Toshiba Corp Sloshing overflow preventer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013104748A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level monitoring system and water level detection method for fuel storage pool
DE102012207473A1 (en) * 2012-05-04 2013-11-07 Areva Gmbh Fuel storage tank of a nuclear power plant
JP2014055942A (en) * 2012-09-11 2014-03-27 Ge-Hitachi Nuclear Energy Americas Llc Method and system for measuring liquid level of spent fuel pool without using electrical power
EP2706329A3 (en) * 2012-09-11 2016-05-25 GE-Hitachi Nuclear Energy Americas LLC Method and system for a spent fuel pool level measurement without electrical power
DE102013222280A1 (en) * 2013-11-01 2014-11-20 Areva Gmbh Fuel storage tank of a nuclear power plant
JP2015132549A (en) * 2014-01-14 2015-07-23 株式会社東芝 Measuring apparatus mounting arrangement for spent fuel pool

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