JPS61254898A - Recovery mechanism of radioactive dust - Google Patents

Recovery mechanism of radioactive dust

Info

Publication number
JPS61254898A
JPS61254898A JP9754385A JP9754385A JPS61254898A JP S61254898 A JPS61254898 A JP S61254898A JP 9754385 A JP9754385 A JP 9754385A JP 9754385 A JP9754385 A JP 9754385A JP S61254898 A JPS61254898 A JP S61254898A
Authority
JP
Japan
Prior art keywords
drum
collection
lid member
dust
bag filter
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
Application number
JP9754385A
Other languages
Japanese (ja)
Inventor
舟川 直芳
田実 芳輝
直弘 榎本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sato Kogyo Co Ltd
Original Assignee
Sato Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sato Kogyo Co Ltd filed Critical Sato Kogyo Co Ltd
Priority to JP9754385A priority Critical patent/JPS61254898A/en
Publication of JPS61254898A publication Critical patent/JPS61254898A/en
Pending legal-status Critical Current

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  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は原子力施設等で生じる低レベル放射性廃棄物の
回収装置に関する。また、本発明は原子力施設等の改修
・解体工事に伴なって発生する粉粒状の低レベル放射性
廃棄物の大量回収処理に最適な回収装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recovery device for low-level radioactive waste generated at nuclear facilities and the like. The present invention also relates to a collection device that is optimal for collecting and processing large quantities of powdery, low-level radioactive waste generated during renovation and demolition work of nuclear facilities and the like.

[従来の技術] 原子力施設等で発生する低レベル放射性廃棄物は、ドラ
ム缶に収納されて保管、廃棄等の処分が行われている0
通常の定期点検時では、発生する低レベル放射性廃棄物
の量は処理に困難性をきたす程ではないが、将来予想さ
れる原子力施設等の改修・解体工事に際しては、大量発
生が見込まれて、十分な対応研究が必要である。
[Conventional technology] Low-level radioactive waste generated at nuclear facilities, etc. is stored and disposed of in drums.
During normal periodic inspections, the amount of low-level radioactive waste generated is not large enough to cause difficulty in processing, but a large amount is expected to be generated during renovation and demolition work of nuclear facilities, etc., which is expected in the future. Sufficient research is needed.

本発明者は上記認識の下に研究を進めた結果、先に、汚
染コンクリートの除去方法゛(特願昭58−15374
0号)、汚染コンクリート表面研削装置(特願昭58−
157406号)を明らかにすると共に、その改良を実
願昭59−10292号として提案した。
As a result of conducting research based on the above recognition, the present inventor has developed a method for removing contaminated concrete (Japanese Patent Application No. 58-15374).
No. 0), contaminated concrete surface grinding equipment (patent application 1982-
157406) and proposed its improvement as Utility Model Application No. 10292/1983.

[発明が解決しようとする問題点] 本発明は、上記研究の一環を成すものであり、特に研削
機によって汚染コンクリートの表面部分のみを研削して
粉粒体としたものを回収する回収装置を研究発展させた
ものである。
[Problems to be Solved by the Invention] The present invention is a part of the above-mentioned research, and particularly provides a collection device that uses a grinder to grind only the surface portion of contaminated concrete and collect it into powder. This is a result of research and development.

前記した特許出願に記載されている汚染コンクリート表
面研削装置における粉粒体の回収機構においては、カッ
タにより研削された粉粒状の汚染コンクリートはブロア
(吸引器)により吸引パイプに吸引されてサイクロンに
より選別されて大きな粒体は第1回収容器中に落下収納
され、小さな粉粒体のものはバグフィルタにより更に選
別されて第2回収容器に収納され、空気はフィルタを介
して排出される構造になっており、第1及び第2回収容
器に対する収納機構に関しては、収納の自動化、汚染粉
粒体の飛散による二次汚染の防止等の面に研究の余地を
残すものであった。
In the particle collection mechanism of the contaminated concrete surface grinding device described in the above-mentioned patent application, the powdery contaminated concrete ground by the cutter is sucked into a suction pipe by a blower (suction device) and sorted by a cyclone. Large particles are dropped and stored in the first collection container, small particles are further sorted by a bag filter and stored in the second collection container, and air is discharged through the filter. Regarding the storage mechanism for the first and second collection containers, there is still room for research in aspects such as automation of storage and prevention of secondary contamination due to scattering of contaminated powder and granules.

本発明は上記に鑑み、汚染粉塵の吸入による作業者の内
部被曝、再飛散による二次汚染を防止しし得る粉粒状の
低レベル放射性廃棄物の回収装置を明らかにすることを
目的とするものである。
In view of the above, the present invention aims to clarify a collection device for powdery low-level radioactive waste that can prevent internal exposure of workers due to inhalation of contaminated dust and secondary contamination due to re-dispersion. It is.

[問題点を解決するための手段] 本発明の上記目的を達成する放射性粉塵の回収機構は、
バグフィルタ等の集塵装置の下部にホッパ、チョークバ
ルブを介してドラム缶等の回収容器の上部開放部を密閉
する蓋部材を用意し、手動ないし自動的に供給されるド
ラム缶等の回収容器に該蓋部材による密閉状態を保った
状態で放射性粉塵等を収納することを特徴とする。
[Means for solving the problems] A radioactive dust collection mechanism that achieves the above object of the present invention is as follows:
A lid member is provided at the bottom of a dust collector such as a bag filter to seal the open upper part of a collection container such as a drum can through a hopper and a choke valve, and it is applicable to collection containers such as drums that are supplied manually or automatically. It is characterized by storing radioactive dust, etc. while keeping the lid member in a sealed state.

次に、本発明の構成を添付図面に示す実施例に従って詳
細に説明する。
Next, the configuration of the present invention will be described in detail according to embodiments shown in the accompanying drawings.

なお、以下の説明においては回収兼処分容器がオープン
ドラム缶である場合について述べる。
In the following explanation, a case will be described in which the collection/disposal container is an open drum.

第1図は本発明の放射性粉塵の回収機構の要部となるバ
グフィルタユニットの一部切欠正面図である。
FIG. 1 is a partially cutaway front view of a bag filter unit which is a main part of the radioactive dust collection mechanism of the present invention.

図中において、lOは吸引パイプであり、前記した如く
研削機等に連続されている。 11は同じく吸引パイプ
であり、図示しない第2フイルタユニツト、バキューム
ユニット等に連続されている。20はバグフィルタケー
シングであり、公知のバグフィルタが配置されている。
In the figure, 1O is a suction pipe, which is connected to a grinder or the like as described above. Reference numeral 11 also designates a suction pipe, which is connected to a second filter unit, vacuum unit, etc. (not shown). 20 is a bag filter casing in which a known bag filter is placed.

21は粉塵払い落し用のモータであってこのモータ21
の作動によりバグフィルタの目づまりが防止される。バ
グフィルタの交換等は扉22を開いて行われる。 30
はホッパであって、バグフィルタケーシング20の下面
に固定されており、このホッパ30の下端にはチョーク
バルブ31を介して、上方開放型のドラム缶40を密閉
する蓋部材32が配置されている。また、この蓋部材3
2の周縁下部には粉塵飛散防止用のフード33が設けら
れている。34は蓋部材32に配置されている粉体レベ
ルセンナである。
21 is a motor for brushing off dust;
This operation prevents the bag filter from clogging. The door 22 is opened to replace the bag filter and the like. 30
is a hopper, which is fixed to the lower surface of the bag filter casing 20, and a lid member 32 is disposed at the lower end of the hopper 30, via a choke valve 31, to seal an upwardly open drum 40. In addition, this lid member 3
A hood 33 for preventing dust scattering is provided at the lower part of the periphery of 2. 34 is a powder level sensor arranged on the lid member 32.

以上の各部材は支柱50に上下動可能な状態で取付けら
れている架台51に配置されており、一対の油圧装置な
いし電動シリンダ52を作動させることにより上下方向
に移動させることができる。
Each of the above members is placed on a pedestal 51 that is attached to a column 50 so as to be movable up and down, and can be moved up and down by operating a pair of hydraulic devices or electric cylinders 52.

60はバイブレータであり、これを作動させることによ
りドラム缶40中に落下された放射性粉塵(粉状廃棄物
)のいわゆる引締め及び上面のならしが行われる。
Reference numeral 60 denotes a vibrator, and by operating the vibrator, so-called tightening of the radioactive dust (powdered waste) dropped into the drum 40 and leveling of the upper surface are performed.

次に図示のバグフィルタユニットの利用法を説明すると
、先ず油圧装置52を作動させて架台51を上昇させ、
バグフィルタケーシング20、ホッパ30蓋部材32等
を持上げた状態で、空のドラム缶40をバイブレータ6
0を取り付けた蔵置台上の所定位置に配置した後、再び
油圧装N52を作動させて架台51を下降させ、ドラム
缶40の上部を蓋部材32及びフード33により密閉す
る。
Next, to explain how to use the illustrated bag filter unit, first, the hydraulic device 52 is activated to raise the pedestal 51,
With the bag filter casing 20, the hopper 30, the lid member 32, etc. lifted, the empty drum 40 is placed in the vibrator 6.
0 is placed at a predetermined position on the storage stand, the hydraulic system N52 is operated again to lower the stand 51, and the upper part of the drum can 40 is sealed with the lid member 32 and the hood 33.

以上の作動中、チョークバルブ31を閉の状態に保ち、
ドラム缶40のセット完了と共に開に切換えれば、図示
しないバキュームユニットの作動により吸引パイプ10
を通して研削機側から搬送されてくる汚染コンクリート
粉粒体の内、バグフィルタにより選別されホッパ30に
蓄積されていた粒径の大きいものはドラム缶40内に落
下収納される。なお、収納作業中、バイブレータ80を
作動させておけば、投入されてきた粉粒体は引き締めら
れ、収納量が増加する外、上面が平にならされることに
なる。
During the above operation, keep the choke valve 31 closed,
When the drum can 40 is switched to open upon completion of setting, the suction pipe 10 is opened by the operation of a vacuum unit (not shown).
Among the contaminated concrete powder conveyed from the grinding machine side through the bag filter, large particles that have been sorted by the bag filter and accumulated in the hopper 30 fall into the drum 40 and are stored there. Note that if the vibrator 80 is operated during the storage operation, the introduced powder particles will be tightened, the storage amount will increase, and the top surface will be flattened.

粉体レベルセンサ34により廃棄物が一定量収納された
ことが検知されると、バキュームユニットの制御により
ドラム缶40中の浮遊粉塵の再吸収を行った後、チョー
クバルブ31が閉じられ、油圧装置52が作動して架台
51が引上げられドラム缶40の開放が行われ、別に用
意される専用蓋によりドラム缶40の上部密閉を行った
後、ドラムボータ等により新しいドラム缶40と交換さ
れる。
When the powder level sensor 34 detects that a certain amount of waste has been stored, the vacuum unit is controlled to reabsorb the floating dust in the drum 40, and then the choke valve 31 is closed and the hydraulic device 52 is operated to pull up the pedestal 51 and open the drum 40. After sealing the top of the drum 40 with a separately prepared dedicated lid, the drum 40 is replaced with a new drum 40 by a drum remover or the like.

以上の動作は手動操作により行うことも可能であるが、
全て又は一部を自動的にないしリモートコントロールに
より行うのが好ましい。
The above operations can be performed manually, but
Preferably, all or part of this is done automatically or by remote control.

[他の実施例] 本発明の代表的実施例は上記の如く構成されているが、
これに限定されず下記の実施例を含むものである。
[Other Embodiments] Representative embodiments of the present invention are configured as described above,
The present invention is not limited thereto and includes the following examples.

(1)架台51による上部構造の上下動に代えて1次の
構造を採用してもよい、即ち、と部構造は固定式とし、
バイブレータBOを含むドラム缶40の載置台を設けて
上下動させるようにしてもよい、またバイブレータ60
は必ずしもドラム缶40の下面側に配置する必要はない
(1) Instead of the vertical movement of the upper structure by the frame 51, a first-order structure may be adopted, that is, the dome structure is fixed,
A mounting table may be provided for the drum 40 containing the vibrator BO so that it can be moved up and down.
does not necessarily need to be placed on the bottom side of the drum 40.

(2)ドラム缶40の自動連続供給(搬送)機構を設け
てもよい、この場合、ドラム缶供給ユニットを形成し、
図示のバグフィルタユニットに接続できるようにするの
が望ましい、このように構成すれば、汚染コンクリート
の研削回収作業中には作業者は離れた安全な場所に位置
して作業を行うことができるのでより安全である。
(2) An automatic continuous supply (transport) mechanism for drums 40 may be provided, in which case a drum supply unit is formed,
It is desirable to be able to connect it to the bag filter unit shown in the figure. With this configuration, workers can work from a safe distance while grinding and recovering contaminated concrete. It's safer.

(3)バグフィルタケーシング20、ホッパ30゜チョ
ークバルブ31までを固定式とし、チョークバルブ31
より下方に位置する蓋部材32等を伸縮自在なバイブ・
ベローズ等で接続し、これら下部構造のみを上下動させ
るようにしてもよい、このような構成においては油圧装
置52を用いずとも、低馬力のモータ等を作動させるだ
けで容易に蓋部材32等を上下動させることが可能であ
る。
(3) The bag filter casing 20, hopper 30° and choke valve 31 are fixed type, and the choke valve 31
The lid member 32, etc. located lower is attached to a telescopic vibrator.
They may be connected by bellows or the like, and only these lower structures may be moved up and down. In such a configuration, the lid member 32, etc., can be easily moved by simply operating a low horsepower motor, etc., without using the hydraulic device 52. It is possible to move up and down.

(4)ドラム缶センサを設け、ドラム缶40が所定位置
にあることを検知させ、ドラム缶40の不存在ないし位
置ずれの際にはチョークバルブ31の閉動作維持ないし
油圧装置152の不作動維持を行うことも出来る。
(4) A drum can sensor is provided to detect whether the drum 40 is in a predetermined position, and when the drum 40 is absent or displaced, the choke valve 31 is maintained closed or the hydraulic device 152 is maintained inoperative. You can also do it.

(5)本発明の粉塵等収納機構は、図示のバグフィルタ
集塵機だけでなく、サイクロン集塵機等の大型機にも適
用可能である。
(5) The dust storage mechanism of the present invention is applicable not only to the illustrated bag filter dust collector but also to large machines such as cyclone dust collectors.

[発明の効果] 本発明は上記の如く構成されているので、汚染コンクリ
ート等の放射性粉塵(粉粒体)をドラム缶に収納させる
際には、ドラム缶の上面は蓋部材で完全に密閉され、内
部が負圧状態になっているので、粉塵等の外部もれを有
効に防止することができる。なお、必要に応じて、ドラ
ム缶の交換に際しては、粉体レベルセンナによる予定収
納量の検知後、バキュウムユニ−/ トの制御(例えば
ブロアの微速運動切換え)によってドラム缶中に浮遊し
ている粉塵をホッパ側に再吸引してからチョークバルブ
を閉鎖する構成を付加するとにより粉塵の再飛散を有効
に防止することができる。
[Effects of the Invention] Since the present invention is configured as described above, when storing radioactive dust (powder particles) such as contaminated concrete in a drum, the top surface of the drum is completely sealed with a lid member, and the inside of the drum is completely sealed. Since it is in a negative pressure state, leakage of dust etc. to the outside can be effectively prevented. When replacing the drum, if necessary, after detecting the planned storage amount using a powder level sensor, remove the dust floating in the drum by controlling the vacuum unit (for example, by switching the blower to slow motion). By adding a configuration that closes the choke valve after re-suctioning to the hopper side, re-scattering of dust can be effectively prevented.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の放射性粉塵の回収機構の要部となるバ
グフィルタユニットの一部切欠正面図である。 図において、10は吸引パイプ、11は吸引パイプ20
はバグフィルタケーシング、 21はモータ、22は扉
、30はホッパ、31はチョークバルブ、32は蓋部材
、33はフード、34は粉体レベルセンサ、40はドラ
ム缶、50は支柱、51は架台、52は油圧装置を特徴
とする
FIG. 1 is a partially cutaway front view of a bag filter unit which is a main part of the radioactive dust collection mechanism of the present invention. In the figure, 10 is a suction pipe, and 11 is a suction pipe 20.
is a bag filter casing, 21 is a motor, 22 is a door, 30 is a hopper, 31 is a choke valve, 32 is a lid member, 33 is a hood, 34 is a powder level sensor, 40 is a drum, 50 is a column, 51 is a frame, 52 features a hydraulic system

Claims (2)

【特許請求の範囲】[Claims] (1)バグフィルタ等の集塵装置の下部にホッパ、チョ
ークバルブを介してドラム缶等の回収兼処分容器の上部
開放部を密閉する蓋部材を用意し、手動ないし自動的に
供給されるドラム缶等の回収兼処分容器に該蓋部材によ
る密閉状態を保つた状態で放射性粉塵等を収納すること
を特徴とする放射性粉塵の回収機構。
(1) A lid member is provided at the bottom of the dust collector such as a bag filter to seal the upper open part of the collection/disposal container for drums, etc. via a hopper and a choke valve, and the drums, etc. are supplied manually or automatically. A collection mechanism for radioactive dust, characterized in that radioactive dust, etc. is stored in a collection/disposal container kept in a sealed state by said lid member.
(2)蓋部材側及び回収兼処分容器の少なくとも一方が
上下に移動して蓋部材による回収兼処分容器の密閉・開
放が行われることを特徴とする特許請求の範囲第1項記
載の放射性粉塵の回収機構。
(2) Radioactive dust according to claim 1, characterized in that at least one of the lid member side and the collection/disposal container moves up and down to seal and open the collection/disposal container with the lid member. collection mechanism.
JP9754385A 1985-05-08 1985-05-08 Recovery mechanism of radioactive dust Pending JPS61254898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9754385A JPS61254898A (en) 1985-05-08 1985-05-08 Recovery mechanism of radioactive dust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9754385A JPS61254898A (en) 1985-05-08 1985-05-08 Recovery mechanism of radioactive dust

Publications (1)

Publication Number Publication Date
JPS61254898A true JPS61254898A (en) 1986-11-12

Family

ID=14195154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9754385A Pending JPS61254898A (en) 1985-05-08 1985-05-08 Recovery mechanism of radioactive dust

Country Status (1)

Country Link
JP (1) JPS61254898A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005131576A (en) * 2003-10-31 2005-05-26 Amano Corp Dust collector with dust level sensing mechanism
JP2007253097A (en) * 2006-03-24 2007-10-04 Amano Corp Dust recovery mechanism for dust collection apparatus
JP2008104960A (en) * 2006-10-26 2008-05-08 Amano Corp Dust recovery device for dust collector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693097A (en) * 1972-10-18 1981-07-28 Kernforschungsz Karlsruhe Method of incinerating radioactive waste

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693097A (en) * 1972-10-18 1981-07-28 Kernforschungsz Karlsruhe Method of incinerating radioactive waste

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005131576A (en) * 2003-10-31 2005-05-26 Amano Corp Dust collector with dust level sensing mechanism
JP4596765B2 (en) * 2003-10-31 2010-12-15 アマノ株式会社 Dust collector with dust level detection function
JP2007253097A (en) * 2006-03-24 2007-10-04 Amano Corp Dust recovery mechanism for dust collection apparatus
JP2008104960A (en) * 2006-10-26 2008-05-08 Amano Corp Dust recovery device for dust collector

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