JPH0128360B2 - - Google Patents
Info
- Publication number
- JPH0128360B2 JPH0128360B2 JP55084872A JP8487280A JPH0128360B2 JP H0128360 B2 JPH0128360 B2 JP H0128360B2 JP 55084872 A JP55084872 A JP 55084872A JP 8487280 A JP8487280 A JP 8487280A JP H0128360 B2 JPH0128360 B2 JP H0128360B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel channel
- fuel
- crud
- vacuum cleaner
- nozzle
- 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
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
【発明の詳細な説明】
本発明は、原子力発電所で使用される燃料チヤ
ンネルの外面に付着したクラツドを除去するため
の燃料チヤンネルの外面掃除機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel channel external surface cleaner for removing crud adhering to the external surface of a fuel channel used in a nuclear power plant.
一般に使用された燃料チヤンネルは、放射能化
されており、空気中に取出して清掃や検査を行な
うことができず、定期検査時には、原子炉から引
き出された燃料チヤンネルは、そのまま燃料貯蔵
ラツクに収納され、ここで検査される。しかし燃
料チヤンネルの表面にはクラツドが付着されてお
り、そのクラツドを付着したまま燃料チヤンネル
の外観検査を行なうため燃料チヤンネルの表面に
形成される傷の発見が難かしい。また燃料チヤン
ネルの表面に付着したクラツドが剥離すると、ク
ラツドはプール水中に浮遊し、視界を妨げ、燃料
交換作業の遅れる因となる。 Generally used fuel channels are radioactive and cannot be taken out into the air for cleaning or inspection, and during periodic inspections, the fuel channels pulled out of the reactor are simply stored in fuel storage racks. and will be examined here. However, crud is attached to the surface of the fuel channel, and since the appearance of the fuel channel is inspected with the crud attached, it is difficult to discover scratches formed on the surface of the fuel channel. Furthermore, if the crud attached to the surface of the fuel channel peels off, the crud will float in the pool water, obstructing visibility and causing delays in fuel replacement work.
本発明は上記した点に鑑みてなされたもので、
燃料チヤンネルの外面に付着したクラツドを剥離
するとともにその剥離したクラツドを回収するこ
とで、プール水を汚さずに精度の高い検査を行な
い得るようにした燃料チヤンネルの外面掃除機を
提供することを目的とする。 The present invention has been made in view of the above points, and
An object of the present invention is to provide a cleaner for cleaning the outer surface of a fuel channel, which enables highly accurate inspection without polluting pool water by peeling off crud adhering to the outer surface of the fuel channel and collecting the peeled crud. shall be.
以下本発明の実施例を図面につき説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において符号１は燃料チヤンネルの外面
掃除機の本体であつて、その外面掃除機本体１
は、燃料プール２の水中に設置されている。 In FIG. 1, reference numeral 1 denotes the main body of the external vacuum cleaner of the fuel channel;
is installed underwater in the fuel pool 2.
上記外面掃除機本体１は第２図に示すように、
上面および下面に燃料チヤンネル３が挿通する開
口４を有する外体５と、その外体５の内部に上下
方向に列設される対をなす回転ブラシ６ａ，６ｂ
と、上記開口４に隣接配置される噴射ノズル７と
を有し、外体５の側面に設けた接続ノズル８に
は、吸引ホース９の一端が接続されている。上記
吸引ホース９の他端は燃料プール２の壁部に突設
した支持棚１０に設けた水中掃除機の11の図示し
ない吸引ノズルに接続されている。 As shown in FIG. 2, the external vacuum cleaner main body 1 has
An outer body 5 having an opening 4 on the upper and lower surfaces through which the fuel channel 3 is inserted, and a pair of rotating brushes 6a, 6b arranged vertically inside the outer body 5.
and an injection nozzle 7 arranged adjacent to the opening 4, and one end of a suction hose 9 is connected to a connection nozzle 8 provided on the side surface of the outer body 5. The other end of the suction hose 9 is connected to a suction nozzle 11 (not shown) of an underwater vacuum cleaner provided on a support shelf 10 protruding from the wall of the fuel pool 2.
一方上記水中掃除機１１は、たとえば燃料プー
ル２に近い位置に設けた制御装置１２により、制
御され、吸引ホース９により吸引される水により
発生する負圧により、噴射ノズル７から燃料チヤ
ンネル３の外面に向けて水が噴射されるようにな
つている。 On the other hand, the underwater vacuum cleaner 11 is controlled by a control device 12 provided, for example, near the fuel pool 2, and is controlled by a negative pressure generated by water sucked by a suction hose 9 from the injection nozzle 7 to the outer surface of the fuel channel 3. Water is now being sprayed towards.
他方上記回転ブラシ６ａ，６ｂは、挿通される
燃料チヤンネル３に当接しかつこれを囲むように
配置されている。したがつて燃料チヤンネル３が
四角形である場合には、その各面に回転ブラシが
当接することになる。 On the other hand, the rotating brushes 6a, 6b are arranged so as to contact and surround the fuel channel 3 inserted therethrough. Therefore, if the fuel channel 3 is square, the rotating brush will come into contact with each side of the square.
なお第１図中符号１３は燃料チヤンネル３の上
部に設けた係止具１４に係止される燃料掴み具で
ある。 Note that reference numeral 13 in FIG. 1 is a fuel gripping tool that is locked to a locking tool 14 provided at the upper part of the fuel channel 3.
次に作用を説明する。 Next, the action will be explained.
燃料掴み具１３で吊られた燃料チヤンネル３
を、外面掃除機本体１の開口４の直上に位置さ
せ、（点線位置）、ついで燃料チヤンネル３を下方
に動かし、外体５の上方から挿入する。同時に回
転ブラシ６ａ，６ｂが作動し、燃料チヤンネル３
の外面に付着したクラツド（図示せず）は、回転
ブラシ６ａ，６ｂにより剥離される。剥離された
クラツドは外体５内に浮遊するが、その浮遊した
クラツドは、水中掃除機１１の作動により接続ノ
ズル８から吸引ホース９を通つて水中掃除機１１
に水とともに導かれる。上記水中掃除機１１によ
つて吸引される水圧は噴射ノズル７に作用し、噴
射ノズル７から噴射する噴流は燃料チヤンネル３
の外面に当り、クラツド除去を促進させる。 Fuel channel 3 suspended by fuel gripper 13
is positioned directly above the opening 4 of the exterior cleaner body 1 (dotted line position), then the fuel channel 3 is moved downward and inserted into the exterior body 5 from above. At the same time, the rotating brushes 6a and 6b operate, and the fuel channel 3
The crud (not shown) adhering to the outer surface of is removed by rotating brushes 6a and 6b. The separated crud floats inside the outer body 5, and when the underwater vacuum cleaner 11 operates, the floating crud passes from the connection nozzle 8 through the suction hose 9 to the underwater vacuum cleaner 11.
will be guided along with the water. The water pressure sucked by the underwater vacuum cleaner 11 acts on the injection nozzle 7, and the jet stream injected from the injection nozzle 7 flows into the fuel channel 3.
It hits the outer surface of the body and promotes crud removal.
以上述べたように本発明によれば、除去したク
ラツドは接続ノズルを介して掃除機に回収される
ので、クラツドにより水が汚れることがなく、し
たがつて燃料チヤンネル外観検査等を短時間で行
ない得、しかも外部から水を供給することなく水
中で燃料チヤンネルのクラツド除去を行なうから
放射線の被曝低減を図り得、さらに装置全体が小
形化され、構造が簡単になるという効果を奏す
る。 As described above, according to the present invention, the removed crud is collected by the vacuum cleaner through the connection nozzle, so the water is not contaminated by the crud, and therefore fuel channel visual inspections can be carried out in a short time. Moreover, since the fuel channel is cladded underwater without supplying water from the outside, radiation exposure can be reduced, and the entire device can be miniaturized and the structure can be simplified.
第１図は本発明による燃料チヤンネルの外面掃
除機の使用状態説明図、第２図は同外面掃除機の
縦断面図である。
３……燃料チヤンネル、５……外体、６ａ，６
ｂ……回転ブラシ、７……噴射ノズル、１１……
水中掃除機。
FIG. 1 is an explanatory diagram of a fuel channel external surface cleaner according to the present invention in use, and FIG. 2 is a longitudinal cross-sectional view of the same external surface cleaner. 3... Fuel channel, 5... Outer body, 6a, 6
b... Rotating brush, 7... Injection nozzle, 11...
Underwater vacuum cleaner.
Claims (1)
開口部および接続ノズルを備えた外体と、一端を
プール水中に開口し他端を燃料チヤンネルの外面
に開口する細い管路を有し上記外体の開口部に隣
接した位置に配置され接続ノズルからの吸引によ
つて発生する負圧でプール水を燃料チヤンネルの
外面に向けて噴射する噴射ノズルと、上記外体内
部に燃料チヤンネルの挿通方向に間隔を置いて横
設された回転ブラシ装置と、燃料チヤンネルの外
面から剥離したクラツドを回収する回収装置とを
備え、この回収装置は上記外体に設けた接続ノズ
ルに吸引ホースを介して接続された水中掃除機を
具備してなる燃料チヤンネルの外面掃除機。1. An outer body having an opening through which a fuel channel is inserted and a connecting nozzle on the upper and lower surfaces, and a narrow pipe line having one end opened into the pool water and the other end opened to the outer surface of the fuel channel. an injection nozzle that is arranged adjacent to the outer body and injects pool water toward the outer surface of the fuel channel using negative pressure generated by suction from the connecting nozzle; It is equipped with a rotating brush device installed horizontally, and a recovery device for recovering crud separated from the outer surface of the fuel channel. An external vacuum cleaner for a fuel channel comprising a vacuum cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8487280A JPS5710500A (en) | 1980-06-23 | 1980-06-23 | Surface cleaning machine for fuel channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8487280A JPS5710500A (en) | 1980-06-23 | 1980-06-23 | Surface cleaning machine for fuel channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5710500A JPS5710500A (en) | 1982-01-20 |
| JPH0128360B2 true JPH0128360B2 (en) | 1989-06-02 |
Family
ID=13842880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8487280A Granted JPS5710500A (en) | 1980-06-23 | 1980-06-23 | Surface cleaning machine for fuel channel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5710500A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0271138A (en) * | 1988-09-06 | 1990-03-09 | Unyusho Daisan Kowan Kensetsu Kyokucho | Underwater structure inspection equipment |
| JPH0271137A (en) * | 1988-09-06 | 1990-03-09 | Unyusho Daisan Kowan Kensetsu Kyokucho | Underwater structure inspection equipment |
| JPH0266283U (en) * | 1988-10-31 | 1990-05-18 | ||
| JP2004219357A (en) * | 2003-01-17 | 2004-08-05 | Ishikawajima Plant Construction Co Ltd | Vent pipe decontamination equipment |
| JP2005337778A (en) * | 2004-05-25 | 2005-12-08 | Chubu Electric Power Co Inc | Method of decontamination treatment of feed water heater heat transfer pipe waste material and half cutting machine used for carrying out this method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50149800U (en) * | 1974-05-29 | 1975-12-12 | ||
| JPS5485556A (en) * | 1977-12-20 | 1979-07-07 | Toshiba Corp | Apparatus for removing fur from nuclear fuel rods |
-
1980
- 1980-06-23 JP JP8487280A patent/JPS5710500A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5710500A (en) | 1982-01-20 |
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