JPS6244640B2 - - Google Patents
Info
- Publication number
- JPS6244640B2 JPS6244640B2 JP55054331A JP5433180A JPS6244640B2 JP S6244640 B2 JPS6244640 B2 JP S6244640B2 JP 55054331 A JP55054331 A JP 55054331A JP 5433180 A JP5433180 A JP 5433180A JP S6244640 B2 JPS6244640 B2 JP S6244640B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- fuel assembly
- liquid
- cleaning liquid
- steam
- 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
- 238000004140 cleaning Methods 0.000 claims description 92
- 239000007788 liquid Substances 0.000 claims description 63
- 239000000446 fuel Substances 0.000 claims description 49
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 9
- 239000010808 liquid waste Substances 0.000 claims description 6
- 230000003134 recirculating effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 206010073306 Exposure to radiation Diseases 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- Cleaning By Liquid Or Steam (AREA)
Description
【発明の詳細な説明】
この発明は原子炉用燃料集合体の表面に付着た
い積した鉄クラツドなどのスケールを、燃料集合
体のままで、洗浄除去する燃料集合体洗浄装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel assembly cleaning device for cleaning and removing scale such as iron crud deposited on the surface of a fuel assembly for a nuclear reactor, while leaving the fuel assembly intact.
原子炉はある期間運転すると燃料集合体の表面
に鉄クラツドその他のスケールが付着たい積す
る。 When a nuclear reactor operates for a certain period of time, iron crud and other scales accumulate on the surface of the fuel assembly.
従来、原子力発電所の定期検査では燃料集合体
に付着たい積している前記スケールは高い放射能
を有するので、除染区域で除染した後、直接作業
員がワイヤブラシなどでそのスケールを落とす方
法しか考えられなかつた。しかし燃料集合体のま
までは、燃料集合体の構造上、内部までワイヤブ
ラシなどでスケールを除去することは困難であ
り、また放射線被曝の点からも難があつて、燃料
集合体の表面に付着たい積した鉄クラツドなどの
スケールを除去する適確な方法は今までなかつ
た。 Conventionally, during periodic inspections of nuclear power plants, the scale that has accumulated on fuel assemblies has high radioactivity, so after decontamination in the decontamination area, workers directly remove the scale using wire brushes, etc. All I could think was. However, due to the structure of the fuel assembly, it is difficult to remove scale from inside the fuel assembly with a wire brush, etc., and it is also difficult to remove scale from the standpoint of radiation exposure. Until now, there has been no suitable method for removing scales such as accumulated iron crud.
この発明は前記の事情に鑑みてなされたもの
で、燃料集合体の表面に付着たい積した鉄クラツ
ドなどのスケールを、噴射される水又は薬液のよ
うな洗浄液体の噴射力及び蒸気噴射を利用して、
燃料集合体のままで、洗浄除去することのできる
燃料集合体洗浄装置を提供することを目的とす
る。 This invention was made in view of the above-mentioned circumstances, and uses the jetting force of water or a cleaning liquid such as a chemical solution and steam jet to remove scale such as iron crud that has accumulated on the surface of a fuel assembly. hand,
An object of the present invention is to provide a fuel assembly cleaning device capable of cleaning and removing fuel assemblies as they are.
次にこの発明による燃料集合体洗浄装置の一実
施例を図面に基づいて説明する。図面は横置き円
筒形の洗浄装置本体１に１個の燃料集合体２を差
し入れた場合のこの発明による燃料集合体洗浄装
置の構成を示している。この発明による燃料集合
体洗浄装置は、円筒気密収納容器３内に洗浄に必
要な各種噴射ノズルその他を収容している洗浄装
置本体１と、その洗浄装置本体１に洗浄液体と蒸
気を供給し、洗浄を終えた液を一部は再循環さ
せ、一部は液体廃棄物処理装置に移送する洗浄装
置補助系４とに大別される。 Next, an embodiment of the fuel assembly cleaning device according to the present invention will be described based on the drawings. The drawing shows the configuration of the fuel assembly cleaning device according to the present invention when one fuel assembly 2 is inserted into a cleaning device main body 1 which is horizontally placed and has a cylindrical shape. The fuel assembly cleaning device according to the present invention includes a cleaning device main body 1 which houses various injection nozzles and others necessary for cleaning in a cylindrical airtight storage container 3, and a cleaning liquid and steam are supplied to the cleaning device main body 1. It is roughly divided into a cleaning device auxiliary system 4, which partially recirculates the liquid after cleaning and partially transfers it to the liquid waste treatment device.
洗浄装置本体１は、ボルト３５により着脱自在
の両端のエンドカバー５と６によつて内部が気密
に保持されている放射線遮蔽金属円筒収納容器３
を外被として備え、その内部には、差し入れられ
た燃料集合体２を収納容器３の中央部に、しかも
その長手方向に水平に支えるための複数個（図面
では５個）のホルダプレート７と、燃料集合体２
の取手８を固定して横方向への移動を阻止し、燃
料集合体２の回転を助ける回転用アダプタ９があ
る。さらにホルダプレート７は収納容器３の内壁
に固定されてホルダプレート７と共に支持部材３
８を形成するホルダ受１０によつてそれぞれ回転
自在に支えられている。また、収納容器３の内部
には、燃料集合体２をその長手方向に直角の方向
から洗浄するために多数の洗浄液体噴射ノズル１
１を有するノズル管１１′と多数の蒸気噴射ノズ
ル１２を有する蒸気管１２′がそれぞれれ各ホル
ダ受１０の間、収納容器３の周内壁近くに何れも
複数組図面では４組、噴射ノズル１１，１２の方
向を燃料集合体２の長手面に向けてそれぞれ水平
に取り付けられている。また、燃料集合体２をそ
の両端方向から長さ方向に洗浄するために、収納
容器３の両エンドカバー５と６の内側近くに複数
の洗浄液体噴射ノズル１３，１４を有するノズル
管１３′，１４′がそれぞれ噴射ノズル１３，１４
の方向を内側に向けて取り付けられている。さら
に洗浄中燃料集合体２を水平軸を中心にして回転
させるために、モータ１５で駆動され、ホルダプ
レート７と共に燃料集合体２を回転させる回転機
構１６があり、収納容器３の外壁には洗浄状態観
測用のサイトグラス３７が設けられている。 The cleaning device main body 1 includes a radiation-shielding metal cylindrical storage container 3 whose interior is kept airtight by end covers 5 and 6 at both ends, which are detachable with bolts 35.
It has a plurality of holder plates 7 (five in the drawing) for horizontally supporting the inserted fuel assembly 2 in the center of the storage container 3 and in the longitudinal direction thereof. , fuel assembly 2
There is a rotation adapter 9 that fixes the handle 8 of the fuel assembly 2 to prevent it from moving in the lateral direction and helps rotate the fuel assembly 2. Further, the holder plate 7 is fixed to the inner wall of the storage container 3, and together with the holder plate 7, the support member 3
They are each rotatably supported by a holder receiver 10 forming a holder 8. Also, inside the storage container 3, a large number of cleaning liquid injection nozzles 1 are installed to clean the fuel assembly 2 from a direction perpendicular to its longitudinal direction.
1 and a steam pipe 12' having a large number of steam injection nozzles 12 are located between each holder receiver 10 and near the inner circumferential wall of the storage container 3. , 12 are mounted horizontally with the directions of the fuel assemblies 2 facing the longitudinal surfaces of the fuel assembly 2. Further, in order to clean the fuel assembly 2 from both ends thereof in the longitudinal direction, a nozzle pipe 13' having a plurality of cleaning liquid injection nozzles 13, 14 near the inside of both end covers 5 and 6 of the storage container 3, 14' are injection nozzles 13 and 14, respectively.
It is installed with the direction facing inward. Furthermore, in order to rotate the fuel assembly 2 during cleaning around a horizontal axis, there is a rotation mechanism 16 that is driven by a motor 15 and rotates the fuel assembly 2 together with the holder plate 7. A sight glass 37 for status observation is provided.
次に洗浄装置補助系４について説明する。洗浄
装置本体１内の洗浄液体噴射ノズル管１１′と洗
浄液体噴射ノズル管１３′，１４′に供給する水又
は薬液などの洗浄液体は、給液タンク１７から給
液弁１８、仕切弁１９、ダブルストレーナ２０を
経て循環ポンプ２１に導かれている。循環ポンプ
２１の出口から吐き出された洗浄液体は、洗浄液
体噴射ノズル管１１′には、仕切弁２２と洗浄液
体供給弁２３を経由し、また洗浄液体噴射ノズル
管１３′には仕切弁２４と洗浄液体供給弁２５、
洗浄液体噴射ノズル管１４′には仕切弁２２と洗
浄液体供給弁２６とをそれぞれ経由して供給され
るようになつている。洗浄を終えた液を再循環さ
せるための戻り管路２７には仕切弁２８があり、
仕切弁２８の出口はダブルストレーナ２０の入
口、仕切弁１９の出口側に接続されている。他の
戻り管路２９の先端にはスケールで汚染された洗
浄液体を液体廃棄物処理系Ａへ移送するためのド
レン弁３０がある。ドレン弁３０の入口側には給
液弁１８、仕切弁１９が並列に接続されている。
循環ポンプ２１には、洗浄液体の圧力及び流量を
調節するためのポンプバイパス弁３１が並列に接
続されており、給液タンク１７にはモータ３２で
駆動されるかくはん器３３が備えられている。な
お、ダブルストレーナ２０は洗浄によつて離脱し
た大きな金属クラツドを除去するためのものであ
る。蒸気ノズル管１２′に備わる蒸気噴射ノズル
１２は蒸気噴射によつて燃料集合体２を直接洗浄
する他に、洗浄液体を蒸気によつて加熱すること
により燃料集合体２の金属表面を膨脹させ、スケ
ールの離脱効果を向上させる役目をしていて、蒸
気源Ｂより蒸気供給弁３４を経て蒸気が供給さ
れ、蒸気供給弁３４の開閉を制御することによつ
て洗浄液体の温度を調整することができる。 Next, the cleaning device auxiliary system 4 will be explained. The cleaning liquid such as water or chemical solution supplied to the cleaning liquid injection nozzle pipe 11' and the cleaning liquid injection nozzle pipes 13' and 14' in the cleaning apparatus main body 1 is supplied from a liquid supply tank 17 to a liquid supply valve 18, a gate valve 19, It is led to a circulation pump 21 via a double strainer 20. The cleaning liquid discharged from the outlet of the circulation pump 21 passes through a gate valve 22 and a cleaning liquid supply valve 23 to the cleaning liquid injection nozzle pipe 11', and passes through a gate valve 24 to the cleaning liquid injection nozzle pipe 13'. cleaning liquid supply valve 25;
Cleaning liquid is supplied to the cleaning liquid injection nozzle pipe 14' via a gate valve 22 and a cleaning liquid supply valve 26, respectively. A gate valve 28 is provided in the return line 27 for recirculating the liquid after cleaning.
The outlet of the gate valve 28 is connected to the inlet of the double strainer 20 and the outlet of the gate valve 19. At the end of the other return line 29 is a drain valve 30 for transferring the scale-contaminated cleaning liquid to the liquid waste treatment system A. A liquid supply valve 18 and a gate valve 19 are connected in parallel to the inlet side of the drain valve 30.
A pump bypass valve 31 for adjusting the pressure and flow rate of the cleaning liquid is connected in parallel to the circulation pump 21, and the liquid supply tank 17 is equipped with a stirrer 33 driven by a motor 32. Note that the double strainer 20 is used to remove large metal cruds separated by cleaning. The steam injection nozzle 12 provided in the steam nozzle pipe 12' not only directly cleans the fuel assembly 2 by steam injection, but also expands the metal surface of the fuel assembly 2 by heating the cleaning liquid with steam. Steam is supplied from the steam source B through the steam supply valve 34, and by controlling the opening and closing of the steam supply valve 34, the temperature of the cleaning liquid can be adjusted. can.
次にこの発明による燃料集合体洗浄装置で燃料
集合体を洗浄する作業順序について説明する。先
ず、エンドカバー５，６を外し、洗浄装置本体１
のホルダ プレート７の穴に燃料集合体２を差し
入れ、燃料集合体２の取手８に回転用アダプタ９
を取り付け、エンドカバー５，６をボルト３５に
よつて締め付ける。給液弁１８を開き、ついで仕
切弁２８は閉じたままで仕切弁１９を開いて給液
タンク１７の洗浄液体をダブルストレーナ２０を
経て循環ポンプ２１に給液する。循環ポンプ２１
を起動させ、仕切弁２４は閉じたままで仕切弁２
２を開き、連通管路３６に通液する。洗浄液体供
給弁２６は閉じたままで洗浄液体供給弁２３を開
けば、洗浄液体は洗浄液体噴射ノズル１１より燃
料集合体２の長手面に噴射されて、燃料集合体２
の長手面の洗浄が行なわれる。また、洗浄液体供
給弁２６を開けば、洗浄液体は洗浄液体噴射ノズ
ル１４より燃料集合体２にその長手方向に噴射さ
れて、長手方向の洗浄が行なわれる。また、仕切
弁２２を閉じ、仕切弁２４と洗浄液体供給弁２５
を開けば、洗浄液体噴射ノズル１３によつて燃料
集合体２は前記と反射側からその長手方向に洗浄
される。洗浄が開始されると同時に、モータ１５
を駆動して回転機構１６を作動させ、ホルダプレ
ート７を回転させることによつて燃料集合体２は
長手軸を中心にして回転され、洗浄が均一に行な
われるようにする。蒸気噴射洗浄を行ないたい場
合又は洗浄液体の温度を高めたい場合は、蒸気入
口弁３４を開いて、蒸気噴射ノズル１２から蒸気
を噴射させる。また、洗浄を終えた液を再使用す
る場合は、戻り管路２７にある仕切弁２８を開
き、仕切弁１９を閉じれば、洗浄を終えた液は、
それに含まれているスラツグがストレーナ２０に
よつて除去されつつ、循環ポンプ２１によつて再
循環される。また、収納容器３の周壁にあるサイ
トグラス３７によつて洗浄状態を観測し、洗浄液
体がスケールで汚染されていることを確認した場
合は、前記作業時には常時閉じられているドレン
弁３０を開いて、汚染洗浄液を液体廃棄物処理系
Ａに移送する。 Next, a description will be given of the sequence of operations for cleaning fuel assemblies using the fuel assembly cleaning apparatus according to the present invention. First, remove the end covers 5 and 6, and remove the cleaning device main body 1.
Insert the fuel assembly 2 into the hole in the holder plate 7, and attach the rotation adapter 9 to the handle 8 of the fuel assembly 2.
, and then tighten the end covers 5 and 6 with bolts 35. The liquid supply valve 18 is opened, and then the gate valve 19 is opened while the gate valve 28 remains closed, and the cleaning liquid in the liquid supply tank 17 is supplied to the circulation pump 21 through the double strainer 20. Circulation pump 21
the gate valve 2 while the gate valve 24 remains closed.
2 is opened and the liquid is passed through the communication pipe line 36. If the cleaning liquid supply valve 23 is opened while the cleaning liquid supply valve 26 remains closed, the cleaning liquid is injected from the cleaning liquid injection nozzle 11 onto the longitudinal surface of the fuel assembly 2.
Cleaning is carried out on the longitudinal side of the Further, when the cleaning liquid supply valve 26 is opened, the cleaning liquid is injected from the cleaning liquid injection nozzle 14 into the fuel assembly 2 in its longitudinal direction, thereby performing cleaning in the longitudinal direction. In addition, the gate valve 22 is closed, and the gate valve 24 and cleaning liquid supply valve 25 are closed.
When the fuel assembly 2 is opened, the cleaning liquid injection nozzle 13 cleans the fuel assembly 2 from the above and the reflection side in its longitudinal direction. At the same time that cleaning starts, the motor 15
By driving the rotation mechanism 16 and rotating the holder plate 7, the fuel assembly 2 is rotated about the longitudinal axis, so that cleaning is uniformly performed. If it is desired to perform steam injection cleaning or to increase the temperature of the cleaning liquid, the steam inlet valve 34 is opened and steam is injected from the steam injection nozzle 12. In addition, if you want to reuse the liquid that has been washed, open the gate valve 28 in the return pipe 27 and close the gate valve 19, and the liquid that has finished washing will be reused.
The slag contained therein is removed by a strainer 20 and recirculated by a circulation pump 21. In addition, the cleaning state is observed using the sight glass 37 on the peripheral wall of the storage container 3, and if it is confirmed that the cleaning liquid is contaminated with scale, the drain valve 30, which is normally closed during the above operation, is opened. Then, the contaminated cleaning liquid is transferred to the liquid waste treatment system A.
以上の垂直洗浄液体噴射ノズル１１と水平洗浄
液体噴射ノズル１３，１４及び蒸気噴射ノズル１
２よりの噴射シーケンスと、洗浄を終えた液の再
循環シーケンスそれぞれの組み合わせは任意に選
択することができるので、この発明による燃料集
合体洗浄装置では最も適した能率のよい洗浄を行
なうようにすることができる。 The above vertical cleaning liquid injection nozzle 11, horizontal cleaning liquid injection nozzle 13, 14, and steam injection nozzle 1
Since the combination of the two injection sequences and the recirculation sequence of the cleaned liquid can be selected arbitrarily, the fuel assembly cleaning device according to the present invention is designed to perform the most suitable and efficient cleaning. be able to.
図面で示した実施例は洗浄装置本体１を横置き
にした場合であるが、洗浄装置本体１は垂直に立
てて縦置きにして使用することもでき、また、こ
の発明の要旨を変更することなく、洗浄装置本体
を改装して、収納容器３内に燃料集合体を複数個
同時に差し入れて洗浄を行なうようにすることも
できる。 Although the embodiment shown in the drawings shows the case where the cleaning device main body 1 is placed horizontally, the cleaning device main body 1 can also be used vertically and placed vertically, and the gist of the present invention can be changed. Alternatively, the main body of the cleaning device may be modified so that a plurality of fuel assemblies can be inserted into the storage container 3 at the same time for cleaning.
以上説明したように、原子力発電所の定期検査
などで燃料集合体の表面に鉄クラツドなどのスケ
ールが付着たい積しているのを発見した場合、こ
の発明による燃料集合体洗浄装置を使用して、燃
料集合体表面の鉄クラツドなどのスケールの洗浄
除去を行えば、その洗浄がすべて気密な、放射線
が遮蔽された収納容器内で行なわれるので放射線
被曝の心配がなく、また洗浄を終えた液を再循環
させて使用するので液体廃棄物処理系に送り込む
放射能を帯びた廃液の量は少なくてすむ利点があ
り、しかも洗浄が十分に行われるので核燃料の熱
効率の向上を期待できる効果がある。 As explained above, when it is discovered that scale such as iron crud has accumulated on the surface of a fuel assembly during a periodic inspection of a nuclear power plant, the fuel assembly cleaning device according to the present invention can be used to clean the fuel assembly. When cleaning and removing scale such as iron crud on the surface of the fuel assembly, all cleaning is done in an airtight, radiation-shielded storage container, so there is no risk of radiation exposure, and the cleaned liquid can be Since it is recycled and used, it has the advantage of reducing the amount of radioactive waste liquid sent to the liquid waste treatment system, and since sufficient cleaning is performed, it is expected to improve the thermal efficiency of nuclear fuel.
図面はこの発明による原子炉用燃料集合体洗浄
装置の構成図である。
１……洗浄装置本体、２……燃料集合体、３…
…収納容器、４……洗浄装置補助系、５，６……
エンドカバー、８……取手、９……アダプタ、１
１，１３，１４……洗浄液体噴射ノズル、１２…
…蒸気噴射ノズル、１６……回転機構、１７……
給液タンク、１８……給液弁、１９，２２，２
４，２８……仕切弁、２０……ストレーナ、２１
……循環ポンプ、２３，２５，２６……洗浄液体
供給弁、２７，２９……戻り管路、３０……ドレ
ーン弁、３１……ポンプバイパス弁、３４……蒸
気供給弁、３６……連通管路、３８……支持部
材、Ａ……液体廃棄物処理系、Ｂ……蒸気源。
The drawing is a configuration diagram of a nuclear reactor fuel assembly cleaning device according to the present invention. 1...Cleaning device main body, 2...Fuel assembly, 3...
...Storage container, 4...Cleaning device auxiliary system, 5, 6...
End cover, 8...Handle, 9...Adapter, 1
1, 13, 14...Cleaning liquid injection nozzle, 12...
...Steam injection nozzle, 16...Rotation mechanism, 17...
Liquid supply tank, 18...Liquid supply valve, 19, 22, 2
4, 28...Gate valve, 20...Strainer, 21
... Circulation pump, 23, 25, 26 ... Cleaning liquid supply valve, 27, 29 ... Return pipe line, 30 ... Drain valve, 31 ... Pump bypass valve, 34 ... Steam supply valve, 36 ... Communication Pipeline, 38... Support member, A... Liquid waste treatment system, B... Steam source.
Claims (1)
の位置に保持する複数個の支持部材と、その燃料
集合体を取手の所で握持するアダプタと、前記燃
料集合体にその横方向及び縦方向からそれぞれ洗
浄液体を噴射する複数の洗浄液体噴射ノズルと、
その燃料集合体に横方向から蒸気を噴射する複数
の蒸気噴射ノズルと、洗浄中その燃料集合体を長
手軸を中心にして回転させる回転機構と、洗浄し
ようとする燃料集合体を含めて前記の機器装置全
部を内部に密閉し収容する放射線遮蔽収納容器と
よりなる洗浄装置本体に、洗浄液体を貯蔵する給
液タンクと、その洗浄液体を前記洗浄装置本体内
の洗浄液体噴射ノズルに送入するための管路と、
その管路の途中に直列に接続されたストレーナ及
び循環ポンプと、その管路の途中に接続して洗浄
液体を希望の洗浄液体噴射ノズルへ接続し又は断
路するための複数個の開閉弁と、前記洗浄装置本
体内の蒸気噴射ノズルへの蒸気を供給する蒸気源
と、蒸気の供給を制御する蒸気供給弁と、洗浄を
終えた液を再循環させるための戻り管路と、その
管路の途中に接続された開閉弁と、洗浄廃液を液
体廃棄物処理系に移送するためのドレン弁と、循
環ポンプに並列に接続して洗浄液体の圧力及び流
量を調節するポンプバイパス弁とで構成される洗
浄装置補助系を組み合わせてなることを特徴とす
る燃料集合体洗浄装置。 a plurality of support members for rotatably holding a fuel assembly to be cleaned in a predetermined position; an adapter for gripping the fuel assembly at a handle; a plurality of cleaning liquid jetting nozzles each jetting cleaning liquid from;
A plurality of steam injection nozzles that inject steam laterally into the fuel assembly, a rotation mechanism that rotates the fuel assembly about a longitudinal axis during cleaning, and a fuel assembly that includes the fuel assembly to be cleaned. A cleaning device main body consisting of a radiation-shielded storage container that seals and houses all the equipment inside, includes a liquid supply tank for storing a cleaning liquid, and the cleaning liquid is sent to a cleaning liquid injection nozzle in the cleaning device main body. A conduit for
A strainer and a circulation pump connected in series in the middle of the pipe, and a plurality of on-off valves connected in the middle of the pipe to connect or disconnect the cleaning liquid to a desired cleaning liquid injection nozzle; A steam source that supplies steam to the steam injection nozzle in the cleaning device main body, a steam supply valve that controls the supply of steam, a return pipe for recirculating the cleaned liquid, and a It consists of an on-off valve connected midway, a drain valve for transferring the cleaning waste liquid to the liquid waste treatment system, and a pump bypass valve connected in parallel to the circulation pump to adjust the pressure and flow rate of the cleaning liquid. A fuel assembly cleaning device comprising a cleaning device auxiliary system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5433180A JPS56151398A (en) | 1980-04-25 | 1980-04-25 | Cleaning device for fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5433180A JPS56151398A (en) | 1980-04-25 | 1980-04-25 | Cleaning device for fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56151398A JPS56151398A (en) | 1981-11-24 |
| JPS6244640B2 true JPS6244640B2 (en) | 1987-09-21 |
Family
ID=12967605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5433180A Granted JPS56151398A (en) | 1980-04-25 | 1980-04-25 | Cleaning device for fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56151398A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111798A (en) * | 1981-12-25 | 1983-07-02 | 日立造船株式会社 | Decontamination equipment for spent fuel transport container lids |
| JPS5941800U (en) * | 1982-09-10 | 1984-03-17 | 株式会社東芝 | Nuclear fuel cleaning equipment |
-
1980
- 1980-04-25 JP JP5433180A patent/JPS56151398A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56151398A (en) | 1981-11-24 |
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