JPH05142394A - Radioactive waste sludge extracting device - Google Patents
Radioactive waste sludge extracting deviceInfo
- Publication number
- JPH05142394A JPH05142394A JP30451491A JP30451491A JPH05142394A JP H05142394 A JPH05142394 A JP H05142394A JP 30451491 A JP30451491 A JP 30451491A JP 30451491 A JP30451491 A JP 30451491A JP H05142394 A JPH05142394 A JP H05142394A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- guide
- storage container
- waste sludge
- moved
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、原子力発電所における
放射性廃液貯蔵容器内より、放射性廃スラッジを抜出す
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for extracting radioactive waste sludge from a radioactive liquid waste storage container in a nuclear power plant.
【０００２】[0002]
【従来の技術】一般に、放射性廃液貯蔵容器（以下、貯
蔵容器と称する）内には、原子炉の運転によって生じた
放射性を帯びた廃スラッジ（廃樹脂や廃液等からなる）
が貯蔵されている。この廃スラッジは長年に渡り徐々に
貯蔵されかつ放射能減衰され、貯蔵容器内一杯に貯蔵さ
れる。貯蔵された廃スラッジを抜出し、減容固化処理、
又は、焼却処理等の処理処分をするため、廃スラッジ抜
出装置が設けられる。貯蔵容器内から廃スラッジを抜出
す設備は、放射線下作業であり、被曝低減の観点から、
作業性・運用性を良くし、かつ、確実な設備が要求され
る。貯蔵容器内の廃スラッジは重量差により、底部に廃
樹脂、上部に廃液が二層状になって溜まる。よって抜出
時には、貯蔵容器内に撹拌機を挿入して、廃液と廃樹脂
等を均一に混合しつつ廃スラッジの抜出を行っている。2. Description of the Related Art In general, radioactive waste liquid storage containers (hereinafter referred to as storage containers) have radioactive waste sludge (comprising waste resin, waste liquid, etc.) generated by the operation of a nuclear reactor.
Is stored. This waste sludge is gradually stored and radioactively attenuated for many years, and is stored in a storage container. Extracted stored waste sludge, volume reduction and solidification,
Alternatively, a waste sludge extraction device is provided for disposal such as incineration. The equipment for extracting the waste sludge from the storage container is a work under radiation, and from the viewpoint of reducing radiation exposure,
Workability and operability are improved, and reliable equipment is required. Due to the weight difference, the waste sludge in the storage container has two layers of waste resin at the bottom and waste liquid at the top. Therefore, at the time of extraction, a stirrer is inserted in the storage container to extract the waste sludge while uniformly mixing the waste liquid and the waste resin.
【０００３】この様な貯蔵容器内の廃スラッジの抜出処
理を行うものは、特開昭56−109000号公報，特開昭53−
34100 号公報，特公昭58−23600 号公報、及び、特公平
3−11678 号公報に記載のものがある。ところが、特開
昭56−109000号公報，特開昭53−34100 号公報及び特開
昭58−23600 号公報では、廃スラッジ撹拌抜出ポンプ
（以下、ポンプと称する）が、貯蔵容器内へ昇降するガ
イドレールの記載が無く、ポンプ昇降時の確実性及びポ
ンプ運転時のポンプ揺れ・振動に対する考慮がなされて
なく、特公平3−11678号公報のものは、貯蔵容器上部の
コンクリート躯体に切欠きが必要となり、遮蔽を兼ねた
コンクリート床厚を厚くしなければならないという不都
合があり、上端部のガイドレール部分を取外し方式とし
た場合には、撹拌抜出作業毎に、ガイドレールをコンク
リートハッチ開口部内に挿入しなければならず、作業性
及び被曝低減の観点より不具合があった。貯蔵容器上の
コンクリート躯体のハッチを開放した場合は、必然的に
コンクリートハッチ部分はポンプのガイドが無くなるも
のであり、コンクリートハッチ開口部の床厚部分と貯蔵
容器内のガイドレールまでの間にポンプガイドが無い場
合には、ポンプ昇降機に吊られた状態でポンプが昇降す
る際にフリー状態となり、貯蔵容器内のポンプガイドレ
ールに確実に、かつ、スムーズに昇降できないという不
具合がある。Those which perform such waste sludge withdrawal treatment in the storage container are disclosed in Japanese Patent Laid-Open Nos. 56-109000 and 53-53.
34100, Japanese Patent Publication No. 58-23600, and Japanese Patent Fair
There is one described in Japanese Patent No. 3-11678. However, in JP-A-56-109000, JP-A-53-34100 and JP-A-58-23600, a waste sludge agitation extraction pump (hereinafter referred to as a pump) is moved up and down into a storage container. There is no guide rail described, and no consideration is given to the certainty when the pump moves up and down and the shaking and vibration of the pump during pump operation. However, when the guide rail part at the upper end is removed, the guide rail must be opened with concrete hatch every time the stirring / extracting work is performed. Since it had to be inserted into the part, there was a problem from the viewpoint of workability and reduction of radiation exposure. When the hatch of the concrete structure on the storage container is opened, the concrete hatch part inevitably loses the guide of the pump, and the pump is installed between the floor thickness part of the concrete hatch opening and the guide rail in the storage container. If there is no guide, there is a problem that when the pump is lifted up and down while being suspended by the pump lifter, it is in a free state, and the pump guide rail in the storage container cannot be reliably and smoothly moved up and down.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、貯蔵容器上
のコンクリート遮蔽ハッチを開口し、ポンプを貯蔵容器
内へ昇降時、コンクリートハッチ開口部と貯蔵容器内の
ガイドレールまでの間で、ポンプガイドが無い状態で
も、ポンプの昇降がスムーズに、かつ、確実に貯蔵容器
内のポンプガイド内に昇降でき、また、人為的にポンプ
ガイドをセットする必要も無いので、放射線下作業にお
ける作業性及び運用性を良くし、かつ、放射線汚染の防
止をすることができる廃スラッジ抜出装置を提供するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention is to open a concrete shielding hatch on a storage container, and when the pump is raised and lowered into the storage container, between the concrete hatch opening and the guide rail in the storage container, the pump is provided. Even without a guide, the pump can be raised and lowered smoothly and reliably, and can be reliably moved up and down into the pump guide in the storage container, and there is no need to manually set the pump guide. It is an object of the present invention to provide a waste sludge extraction device that can improve operability and prevent radiation contamination.
【０００５】[0005]
【課題を解決するための手段】本発明の放射性廃スラッ
ジ抜出装置は、複数個の貯蔵容器の兼用設置とし、装置
コモンベース上にはポンプ，ポンプ用昇降機，ホースリ
ール，ケーブルリール，可動式ポンプ受台、及びポンプ
追随ガイド等により形成されている。ポンプ追随ガイド
はポンプ車輪上に乗った状態でポンプの昇降に追随可能
な機構とし、ポンプ下降時は、コンクリート躯体ハッチ
開放空間部分のポンプガイドをせしめ、装置内のガイド
ローラ上のストッパで、下降を制限される機構とし、ポ
ンプ上昇時にはポンプ車輪上に乗った状態で、ポンプと
一緒にポンプ追随ガイドも装置内に引き上げられる。ポ
ンプ追随ガイドは、貯蔵容器内ガイドレール上部まで昇
降させるものであり、ポンプ追随ガイドの下降下端と貯
蔵容器内のガイドレール上部の間隔は、昇降するポンプ
の車輪間寸法より小さくすることにより、ポンプの上下
車輪のいずれかが必ずガイド内にある機構としている。The radioactive waste sludge extraction device of the present invention is provided with a plurality of storage containers for common use, and a pump, a pump elevator, a hose reel, a cable reel, and a movable type are installed on a common base of the device. It is formed by a pump pedestal, a pump following guide, and the like. The pump follow-up guide has a mechanism that can follow the up and down movement of the pump while it is on the pump wheel.When the pump descends, the pump guide in the concrete body hatch open space part is pushed down and the guide roller inside the device lowers it When the pump is lifted, the pump follow-up guide is pulled up into the apparatus together with the pump while being on the pump wheel. The pump follow-up guide moves up and down to the upper part of the guide rail in the storage container.The gap between the lower end of the pump follow-up guide and the upper part of the guide rail in the storage container is made smaller than the dimension between the wheels of the pump that moves up and down. One of the upper and lower wheels is always in the guide.
【０００６】[0006]
【作用】本機構により、貯蔵容器上のコンクリート遮蔽
ハッチ開口部にポンプガイドの設置が無い状態にも、ポ
ンプを確実に貯蔵容器内のポンプガイドレール内に自動
的に昇降でき、放射線下作業における作業性及び運用性
を良くすることができる。[Operation] With this mechanism, even when there is no pump guide installed in the opening of the concrete shield hatch on the storage container, the pump can be reliably automatically moved up and down in the pump guide rail inside the storage container. Workability and operability can be improved.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１及び図２により
説明する。図１は、本発明機構を設けた廃スラッジ抜出
装置と、スラッジ貯蔵容器との関係を示す全体図、図２
は本発明の機構の詳細を示す図である。図中、１はコン
クリート躯体であり、内部には複数個のスラッジ貯蔵容
器２が併設されている。この貯蔵容器２はステンレス鋼
製であり、内部には同材料でポンプガイドレール２ａが
設置されている。また、コンクリート躯体１の上部蓋１
ｃ取外し後の開口部１ｂ上に、廃スラッジ抜出装置３が
設置される。廃スラッジ抜出装置３は、装置コモンベー
ス４上に一体に組込まれた構造となっており、貯蔵容器
内へ昇降するポンプ５，ポンプ用昇降機６，ポンプに接
続し一緒に昇降するポンプ用電源ケーブル７，ポンプに
接続し一緒に昇降するスラッジを抜出すフレキシブルホ
ース８，コモンベース４内に組込まれ、装置内より貯蔵
容器へ昇降する際の開口部となる可動式のポンプ受台
９、及びコンクリート躯体開口部１ｂヘポンプ５の昇降
と追随し昇降するポンプ追随ガイド１０から構成され
る。次に本実施例の作用を説明する。廃スラッジの抜出
操作は次の手順で行なわれる。まず抜出対象貯蔵容器上
部のコンクリートハッチ１ｃを取外し、廃スラッジ抜出
装置３をセットし、装置内のポンプ昇降機６によりポン
プ５を吊り、装置内のポンプ受台９を移動して開口部を
作り、ポンプ５を貯蔵容器２内のガイドレール２ａに沿
って降下させ廃液とスラッジを撹拌し、適度の撹拌濃度
を確認の上、廃スラッジを抜出すものである。抜出移送
運転終了後、ポンプ５を上昇させながら貯蔵容器内２の
洗浄スプレ１１により洗浄し、廃スラッジ抜出装置３内
にポンプ５を収納し、廃スラッジ抜出装置３全体を吊っ
て移動し、コンクリートハッチ１ｃを閉塞し、一連の作
業を完了する。本実施例で、ポンプ５が貯蔵容器２のガ
イドレール２ａへ降下の際、ポンプ５の上部車輪５ａ上
に、ポンプ追随ガイド１０のステー１０ａが乗った状態
でポンプ５の下降に追随して下降し、ストッパ１０ｂで
ポンプ追随ガイドが停止し、ポンプ５のみが降下し貯蔵
容器２内のガイドレール２ａへスムーズに降下する。上
昇時にはポンプ５の上昇に伴い、ポンプ上部車輪５ａ上
にステー１０ａが乗った状態でポンプ上昇に追随し上昇
する。廃スラッジ抜出装置３内にポンプ上昇後、ポンプ
受台９上に受けられる。貯蔵容器２は、コンクリート躯
体１に内張りされた形で構成され、ポンプ５が昇降する
ためのガイドレール２ａが設けられる。ガイドレール２
ａの上端は、貯蔵容器２上部のコンクリート躯体１の天
井の近くまで設けられ、貯蔵容器２もガイドレール２ａ
を囲む形で形成される。また、貯蔵容器２上部には、ポ
ンプの洗浄用としてのスプレノズル１１が設けられる。
貯蔵容器２内には、廃スラッジ２ｃが底部に、廃液２ｂ
が上部に二層状になって溜っている。図２で、ポンプ追
随ガイド１０は、装置コモンベース４に固定されたガイ
ドローラ１１に沿って上下に可動する。ポンプ５には上
部車輪５ａ，下部車輪５ｂが設けられ、ポンプ追随ガイ
ド１０には、ポンプ５が上昇及び下降時に、ポンプ上部
車輪５ａに乗って追随できるためのステー１０ａが設け
られ、ポンプ追随ガイド１０には下降時のストッパ１０
ｂが設けられる。ポンプ追随ガイド１０が下降した状態
で、貯蔵容器２のガイドレール２ａ上端との寸法Ｌ
2 は、ポンプ５の車輪間寸法Ｌ1 よりも小さく形成され
る。ポンプ追随ガイド１０が降下時、ポンプ追随ガイド
１０の下端と貯蔵容器内ガイドレール２ａ上端との寸法
Ｌ2 は、ポンプ５の上部車輪５ａと下部車輪５ｂとの寸
法Ｌ1 よりも小さく構成されているので、コンクリート
ハッチ開口部１ｂの空間部分でも、自動的に、かつ、確
実にポンプを貯蔵容器内ガイドレール２ａへ昇降するこ
とができる。ポンプ追随ガイドレール１０の下端及び貯
蔵容器内ガイドレール２ａの上端部は、ポンプ５の車輪
がスムーズに出入りできるよう末広がりの形状をなして
いる。ガイドレール間の寸法Ｌ2 の起点はこの末広がり
の開始点をさす。Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is an overall view showing the relationship between a sludge storage device equipped with the mechanism of the present invention and a sludge storage container, FIG.
FIG. 4 is a diagram showing details of the mechanism of the present invention. In the figure, reference numeral 1 denotes a concrete skeleton, and a plurality of sludge storage containers 2 are provided inside the concrete skeleton. The storage container 2 is made of stainless steel, and a pump guide rail 2a made of the same material is installed inside. Also, the upper lid 1 of the concrete frame 1
c The waste sludge extracting device 3 is installed on the opening 1b after the removal. The waste sludge extraction device 3 has a structure integrally incorporated on the device common base 4, and has a pump 5 that moves up and down into the storage container 5, a pump lifter 6, and a pump power supply that moves up and down together with the pump. A cable 7, a flexible hose 8 connected to a pump for extracting sludge that moves up and down together, a movable pump pedestal 9 that is incorporated in the common base 4 and serves as an opening when moving up and down from the inside of the apparatus to a storage container, and It is composed of a pump follow-up guide 10 that moves up and down by following up and down of the pump 5 to the concrete frame opening 1b. Next, the operation of this embodiment will be described. The operation of extracting the waste sludge is performed by the following procedure. First, the concrete hatch 1c on the upper part of the storage container to be extracted is removed, the waste sludge extraction device 3 is set, the pump 5 is suspended by the pump lifter 6 in the device, and the pump cradle 9 in the device is moved to open the opening. The pump 5 is made to descend along the guide rail 2a in the storage container 2 to stir the waste liquid and the sludge, and the waste sludge is extracted after confirming an appropriate stirring concentration. After completion of the extraction transfer operation, the pump 5 is raised and cleaned by the cleaning spray 11 in the storage container 2, the pump 5 is stored in the waste sludge extraction device 3, and the entire waste sludge extraction device 3 is suspended and moved. Then, the concrete hatch 1c is closed, and a series of work is completed. In the present embodiment, when the pump 5 descends to the guide rail 2a of the storage container 2, the stay 10a of the pump follow-up guide 10 is placed on the upper wheel 5a of the pump 5, and the descent follows the descent of the pump 5. Then, the pump following guide is stopped by the stopper 10b, and only the pump 5 descends and smoothly descends to the guide rail 2a in the storage container 2. At the time of ascending, as the pump 5 ascends, the pump 10 ascends with the stay 10a on the pump upper wheel 5a. After the pump is moved up into the waste sludge extracting device 3, it is received on the pump receiving stand 9. The storage container 2 is constructed so as to be lined inside the concrete skeleton 1, and is provided with a guide rail 2a for moving the pump 5 up and down. Guide rail 2
The upper end of a is provided near the ceiling of the concrete skeleton 1 above the storage container 2, and the storage container 2 also has a guide rail 2a.
Is formed so as to surround the. Further, a spray nozzle 11 for cleaning the pump is provided above the storage container 2.
In the storage container 2, the waste sludge 2c is at the bottom and the waste liquid 2b
Are accumulated in two layers at the top. In FIG. 2, the pump following guide 10 is vertically movable along a guide roller 11 fixed to the device common base 4. The pump 5 is provided with an upper wheel 5a and a lower wheel 5b, and the pump follow-up guide 10 is provided with a stay 10a for riding on the pump upper wheel 5a when the pump 5 moves up and down. 10 is a stopper 10 when descending
b is provided. With the pump following guide 10 lowered, the dimension L of the upper end of the guide rail 2a of the storage container 2
2 is formed smaller than the inter-wheel dimension L 1 of the pump 5. When the pump following guide 10 descends, the dimension L 2 between the lower end of the pump following guide 10 and the upper end of the guide rail 2a in the storage container is smaller than the dimension L 1 of the upper wheel 5a and the lower wheel 5b of the pump 5. Therefore, even in the space portion of the concrete hatch opening 1b, the pump can be automatically and reliably moved up and down to the guide rail 2a in the storage container. The lower end of the pump follow-up guide rail 10 and the upper end of the in-storage container guide rail 2a have a divergent shape so that the wheels of the pump 5 can smoothly move in and out. The starting point of the dimension L 2 between the guide rails is the starting point of this divergence.
【０００８】[0008]
【発明の効果】本発明によれば、従来のようにコンクリ
ートハッチ開口部の空間部分に可搬式ガイドを設けるこ
となく自動的に、かつ、確実にポンプを昇降することが
でき、廃スラッジの抜出作業における放射線汚染を防止
することができる。According to the present invention, the pump can be automatically and reliably moved up and down without providing a portable guide in the space of the concrete hatch opening as in the conventional case, and the waste sludge can be removed. It is possible to prevent radiation contamination in the work of going out.
【図１】本発明装置を貯蔵容器上部に設置した状態の縱
断面図。FIG. 1 is a vertical cross-sectional view showing a state where the device of the present invention is installed on the upper part of a storage container.
【図２】本発明の機構を示す縦断図面。FIG. 2 is a vertical sectional view showing a mechanism of the present invention.
２…貯蔵容器、２ａ…貯蔵容器内ガイドレール、３…廃
スラッジ抜出装置、５…ポンプ、６…ポンプ用昇降機、
１０…ポンプ追随ガイド。2 ... storage container, 2a ... guide rail in storage container, 3 ... waste sludge extracting device, 5 ... pump, 6 ... elevator for pump,
10 ... Pump follow-up guide.
Claims (2)
貯蔵する放射性廃液の貯蔵容器内より、前記放射性廃ス
ラッジを撹拌して抜出す装置において、前記貯蔵容器内
に廃スラッジの撹拌抜出ポンプの昇降に追随し、昇降可
動なポンプガイドを設けたことを特徴とする、放射性廃
スラッジ抜出装置。1. A device for stirring and extracting the radioactive waste sludge from a storage container of the radioactive waste liquid for storing the radioactive waste sludge in a nuclear power plant, wherein a stirring sludge extraction pump for the waste sludge is moved up and down into the storage container. The radioactive waste sludge extraction device is characterized by being provided with a pump guide that can be moved up and down.
ンプガイドレールが設けられ、前記ポンプガイドレール
は前記前容器の上部コンクリート躯体の近くまで構成さ
れ、前記撹拌抜出ポンプに追随して昇降が可能なポンプ
ガイドと、前記貯蔵容器内のポンプガイドレールとの間
隔を、前記撹拌抜出ポンプの車輪間寸法より小さくした
廃スラッジ抜出装置。2. The pump guide rail according to claim 1, wherein a pump guide rail is provided in the storage container, and the pump guide rail is formed up to near an upper concrete skeleton of the front container, and follows the stirring extraction pump. A waste sludge extracting device in which a distance between a pump guide that can be raised and lowered and a pump guide rail in the storage container is smaller than a dimension between wheels of the stirring and extracting pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30451491A JPH05142394A (en) | 1991-11-20 | 1991-11-20 | Radioactive waste sludge extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30451491A JPH05142394A (en) | 1991-11-20 | 1991-11-20 | Radioactive waste sludge extracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05142394A true JPH05142394A (en) | 1993-06-08 |
Family
ID=17933952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30451491A Pending JPH05142394A (en) | 1991-11-20 | 1991-11-20 | Radioactive waste sludge extracting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05142394A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012145548A (en) * | 2011-01-14 | 2012-08-02 | Mitsubishi Heavy Ind Ltd | Radioactive solid waster treatment method and radioactive solid waster storage facility |
| JP2012145547A (en) * | 2011-01-14 | 2012-08-02 | Mitsubishi Heavy Ind Ltd | Seal structure |
| JP2016088659A (en) * | 2014-10-31 | 2016-05-23 | 株式会社椿本チエイン | Low temperature storage system, transport mechanism, and low temperature hanger |
| KR102054739B1 (en) * | 2019-04-30 | 2019-12-11 | (주)코네스코퍼레이션 | A treatment method for radioactive spent resin |
-
1991
- 1991-11-20 JP JP30451491A patent/JPH05142394A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012145548A (en) * | 2011-01-14 | 2012-08-02 | Mitsubishi Heavy Ind Ltd | Radioactive solid waster treatment method and radioactive solid waster storage facility |
| JP2012145547A (en) * | 2011-01-14 | 2012-08-02 | Mitsubishi Heavy Ind Ltd | Seal structure |
| JP2016088659A (en) * | 2014-10-31 | 2016-05-23 | 株式会社椿本チエイン | Low temperature storage system, transport mechanism, and low temperature hanger |
| KR102054739B1 (en) * | 2019-04-30 | 2019-12-11 | (주)코네스코퍼레이션 | A treatment method for radioactive spent resin |
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