JPH0316640B2 - - Google Patents
Info
- Publication number
- JPH0316640B2 JPH0316640B2 JP56161046A JP16104681A JPH0316640B2 JP H0316640 B2 JPH0316640 B2 JP H0316640B2 JP 56161046 A JP56161046 A JP 56161046A JP 16104681 A JP16104681 A JP 16104681A JP H0316640 B2 JPH0316640 B2 JP H0316640B2
- Authority
- JP
- Japan
- Prior art keywords
- crd
- cleaning
- disassembly
- tube
- decomposition
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005202 decontamination Methods 0.000 claims description 11
- 230000003588 decontaminative effect Effects 0.000 claims description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004065 wastewater treatment 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 In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
【発明の詳細な説明】
本発明は、制御棒駆動機構（以下CRDと称す）
の分解及び洗浄作業をできるだけ遠隔自動化する
CRD分解洗浄装置に係り、特に高汚染部である
アウターフイルタ部、インナーフイルタ部の除染
に好適な高汚染部除染アダプターに関する。[Detailed Description of the Invention] The present invention provides a control rod drive mechanism (hereinafter referred to as CRD).
Remotely automate disassembly and cleaning work as much as possible.
The present invention relates to a highly contaminated part decontamination adapter suitable for decontaminating a CRD decomposition and cleaning device, particularly the highly contaminated outer filter part and inner filter part.
従来のCRD分解洗浄作業におけるインナーフ
イルタ及びアウターフイルタの分解洗浄は、作業
者がホースによる注水等で簡単に洗浄した後分解
していたので、作業者の被曝量が多いという欠点
があつた。 In conventional CRD disassembly and cleaning work, the inner and outer filters were disassembled and cleaned by the worker, who simply washed them with water using a hose and then disassembled them, which had the disadvantage of exposing the worker to a large amount of radiation.
本発明の目的は密封容器内で高圧水をノズルか
ら噴射して、アウターフイルタ及びインナーフイ
ルタに付着している放射性物質を解体前に除去す
ることにより、CRDの分解洗浄作業による被曝
量を低減する高汚染部除染アダプタを提供するこ
とにある。 The purpose of the present invention is to reduce the amount of radiation exposure due to CRD disassembly and cleaning work by injecting high-pressure water from a nozzle in a sealed container to remove radioactive substances adhering to the outer filter and inner filter before disassembly. The purpose of the present invention is to provide a highly contaminated area decontamination adapter.
本発明はCRD分解洗浄装置として、水槽の中
でCRDを分解及び洗浄する装置を考案し、特に
汚染量の高いアウターフイルタ及びインナーフイ
ルタ部を解体前に除染し、除染水を水槽内の他の
部分に拡散しない構造を持つた除染アダプタであ
る。 The present invention devises a CRD disassembly and cleaning device that disassembles and cleans CRD in a water tank, decontaminates the outer filter and inner filter parts, which have a particularly high amount of contamination, before disassembly, and pours the decontaminated water into the water tank. This is a decontamination adapter that has a structure that prevents it from spreading to other parts.
以下、本発明の一実施例を図によつて説明す
る。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図にCRDの構造を示す。CRDは大きくア
ウターチユーブ１、インデツクスチユーブ２、ピ
ストンチユーブ３の円管及び放射性物質を捕捉す
るアウターフイルタ４、インナーフイルタ５より
構成される。CRDの分解はアウターフイルタ４
及びインナーフイルタ５を取外し、上記チユーブ
を順々に引き抜くことにより行なわれる。 Figure 1 shows the structure of CRD. The CRD is mainly composed of an outer tube 1, an index tube 2, a piston tube 3, an outer filter 4, and an inner filter 5 for trapping radioactive substances. Disassemble CRD using outer filter 4
This is done by removing the inner filter 5 and pulling out the tubes one after another.
第２図及び第３図にCRD分解洗浄装置の構成
を示す。CRD分解洗浄装置は分解洗浄槽６、移
動台車７、チユーブ保持ユニツト８、引抜クラン
プユニツト９、高汚染部除染アダプタ１０により
構成される。分解洗浄槽６の中には水が満たされ
ており、常時移動台車７に乗つているCRD１１
が水没している。CRD１１の分解は、高汚染部
除染アダプタ１０によつてアウターフイルタ４及
びインナーフイルタ５を洗浄後取外し、引抜きク
ランプユニツト９によりCRD１１を固定し、移
動台車７を移動させることにより行なう。 Figures 2 and 3 show the configuration of the CRD disassembly and cleaning equipment. The CRD decomposition and cleaning equipment is comprised of a decomposition and cleaning tank 6, a moving cart 7, a tube holding unit 8, a pull-out clamp unit 9, and a highly contaminated area decontamination adapter 10. The disassembly and cleaning tank 6 is filled with water, and the CRD 11 is constantly mounted on a movable trolley 7.
is submerged in water. Disassembly of the CRD 11 is carried out by removing the outer filter 4 and inner filter 5 after cleaning with the highly contaminated area decontamination adapter 10, fixing the CRD 11 with the pull-out clamp unit 9, and moving the movable cart 7.
第４図及び第５図に本発明の高汚染部除染アダ
プタ１０の具体例を示す。高汚染部除染アダプタ
１０は高圧ホース１２、ノズル１３、ドレンホー
ス１４、セルフシーリングカツプリング１５、リ
ングカバー１６、アーム１７、止め金１８より構
成される。リングカバー１６は半割れになつてお
り、先端に高圧ホース１２につながれたノズル１
３、及びドレンホース１４が付いている。不使用
時は半割れのリングカバー１６は分解洗浄槽６の
内部両側に収納される。分解洗浄槽６内の移動台
車７に乗せられたCRD１１のアウターフイルタ
４、インナーフイルタ５部をアーム１７によつて
ガイドされるリングカバー１６で覆い止め金１８
によつてリングカバー１６内部を密封する。ノズ
ル１３から高圧水を噴射し、CRD１１を回転さ
せながらアウターフイルタ４、インナーフイルタ
５を除染する。除染水はリングカバー１６により
分解洗浄槽６内に拡散しないで、ドレンホース１
４より吸引され排水処理系に送られる。 FIG. 4 and FIG. 5 show a specific example of the highly contaminated area decontamination adapter 10 of the present invention. The highly contaminated area decontamination adapter 10 is composed of a high pressure hose 12, a nozzle 13, a drain hose 14, a self-sealing coupling 15, a ring cover 16, an arm 17, and a stopper 18. The ring cover 16 is split in half, and the nozzle 1 connected to the high pressure hose 12 is attached to the tip.
3, and a drain hose 14 are attached. When not in use, the half-split ring cover 16 is stored on both sides inside the decomposition and cleaning tank 6. The outer filter 4 and inner filter 5 of the CRD 11 placed on the movable cart 7 in the decomposition and cleaning tank 6 are covered with a ring cover 16 guided by an arm 17 and a stopper metal 18
to seal the inside of the ring cover 16. High-pressure water is injected from the nozzle 13 to decontaminate the outer filter 4 and the inner filter 5 while rotating the CRD 11. The decontamination water is not diffused into the decomposition cleaning tank 6 by the ring cover 16, and the drain hose 1
4 and sent to the wastewater treatment system.
本発明によれば、CRDの中で汚染量の高いア
ウターフイルタ及びインナーフイルタを分解前に
遠隔自動で除染できるので、CRDの分解洗浄作
業の省力化、時間短縮及び作業員の被曝低減の効
果がある。 According to the present invention, the highly contaminated outer filter and inner filter of a CRD can be remotely and automatically decontaminated before disassembly, resulting in labor-saving and time-saving work for disassembling and cleaning a CRD, and reducing radiation exposure for workers. There is.
第１図はCRDの構造断面図、第２図はCRD分
解洗浄装置立面説明図、第３図は第２図の側面説
明図、第４図は高汚染部除染アダプタ概略説明
図、第５図は第４図の平面図である。
１……アウターチユーブ、２……インデツクス
チユーブ、３……ピストンチユーブ、４……アウ
ターフイルタ、５……インナーフイルタ、６……
分解洗浄槽、７……移動台車、８……チユーブ保
持ユニツト、９……引抜クランプユニツト、１０
……高汚染部除染アダプタ、１１……制御棒駆動
機構、１２……高圧ホース、１３……ノズル、１
４……ドレンホース、１５……セルフシーリング
カツプリング、１６……リングカバー、１７……
アーム、１８……止め金。
Figure 1 is a cross-sectional view of the structure of the CRD, Figure 2 is an elevation view of the CRD disassembly and cleaning equipment, Figure 3 is a side view of Figure 2, Figure 4 is a schematic diagram of the highly contaminated area decontamination adapter, FIG. 5 is a plan view of FIG. 4. 1... Outer tube, 2... Index tube, 3... Piston tube, 4... Outer filter, 5... Inner filter, 6...
Decomposition cleaning tank, 7...Moving cart, 8...Tube holding unit, 9...Pull-out clamp unit, 10
... Highly contaminated area decontamination adapter, 11 ... Control rod drive mechanism, 12 ... High pressure hose, 13 ... Nozzle, 1
4...Drain hose, 15...Self-sealing coupling ring, 16...Ring cover, 17...
Arm, 18...clasp.
Claims (1)
る制御棒駆動機構（以下CRDと称す）の分解洗
浄作業を行なう分解洗浄槽と、前記分解洗浄槽内
でCRDを移動させる移動台車と、前記チユーブ
を保持するチユーブ保持ユニツトからなるCRD
分解洗浄装置において、 前記分解洗浄槽内の一端に前記チユーブの一端
にあるアウターフイルタ及びインナーフイルタを
覆うカバーを設け、該カバーには洗浄水を噴射す
るノズルと、該ノズルに洗浄水を供給する配管
と、洗浄水を排出する配管とを備えたことを特徴
とする制御棒駆動機構分解洗浄装置の高汚染部除
染アダプター。[Claims] 1. A disassembly and cleaning tank for disassembling and cleaning a control rod drive mechanism (hereinafter referred to as CRD) having a plurality of tubes configured in a concentric cylindrical shape, and a disassembly and cleaning tank for moving the CRD within the disassembly and cleaning tank. A CRD consisting of a moving cart and a tube holding unit that holds the tube.
In the decomposition and cleaning device, a cover is provided at one end of the decomposition and cleaning tank to cover an outer filter and an inner filter at one end of the tube, and the cover includes a nozzle for spraying cleaning water and supplying the cleaning water to the nozzle. A highly contaminated part decontamination adapter for a control rod drive mechanism disassembly and cleaning device, characterized by comprising piping and piping for discharging cleaning water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56161046A JPS5862587A (en) | 1981-10-12 | 1981-10-12 | Highly contaminated part discontaminating adapter of dismantling and cleaning device for control rod drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56161046A JPS5862587A (en) | 1981-10-12 | 1981-10-12 | Highly contaminated part discontaminating adapter of dismantling and cleaning device for control rod drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5862587A JPS5862587A (en) | 1983-04-14 |
| JPH0316640B2 true JPH0316640B2 (en) | 1991-03-06 |
Family
ID=15727565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56161046A Granted JPS5862587A (en) | 1981-10-12 | 1981-10-12 | Highly contaminated part discontaminating adapter of dismantling and cleaning device for control rod drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5862587A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60260898A (en) * | 1984-06-07 | 1985-12-24 | 株式会社日立製作所 | Washer for drive of control rod for nuclear reactor |
-
1981
- 1981-10-12 JP JP56161046A patent/JPS5862587A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5862587A (en) | 1983-04-14 |
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