JPS63151810A - Apparatus for measuring oxide film of fuel channel box - Google Patents
Apparatus for measuring oxide film of fuel channel boxInfo
- Publication number
- JPS63151810A JPS63151810A JP61298736A JP29873686A JPS63151810A JP S63151810 A JPS63151810 A JP S63151810A JP 61298736 A JP61298736 A JP 61298736A JP 29873686 A JP29873686 A JP 29873686A JP S63151810 A JPS63151810 A JP S63151810A
- Authority
- JP
- Japan
- Prior art keywords
- oxide film
- channel box
- fuel channel
- measuring
- fuel
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000005259 measurement Methods 0.000 claims description 17
- 238000005253 cladding Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000691 measurement method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002915 spent fuel radioactive waste Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は沸騰水型原子力発電所において使用される燃料
チャンネルボックスに係り、特に、付着クラッドの多い
照射燃料チャンネルボックスに好適な表面酸化膜測定装
置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a fuel channel box used in a boiling water nuclear power plant, and in particular, a surface oxide film measurement method suitable for an irradiated fuel channel box with a large amount of deposited crud. Regarding equipment.
原子力発電所で使用される第２図に示す燃料集合体１の
構成部品である燃料チャンネルボックス３は炉心内で長
期間中性子照射されると同時に高温高圧の水蒸気雰囲気
中で使用されるため、酸化の促進により表面に腐食が進
行する。この腐食は燃料チャンネルボ゛ツクス３の性能
な寿命に大きな影響を与えるため、燃料チャンネルボッ
クス３の健全性確認のため表面酸化膜測定が実施されて
いる。燃室手段は、通常、非破壊検査法として、渦電流
を利用した表面酸化膜測定法が適用されているが、渦電
流による測定前に、燃料チャンネルボックス３の表面に
付着したクラッドの影響をなくすために、クラッド除去
作業が実施されている。The fuel channel box 3, which is a component of the fuel assembly 1 shown in Fig. 2 used in a nuclear power plant, is irradiated with neutrons for a long period of time in the reactor core and is used in a high-temperature, high-pressure steam atmosphere, so it is susceptible to oxidation. corrosion progresses on the surface. Since this corrosion has a great effect on the performance life of the fuel channel box 3, surface oxide film measurements are carried out to confirm the integrity of the fuel channel box 3. For combustion chamber means, a surface oxide film measurement method using eddy current is normally applied as a non-destructive inspection method. To eliminate this, crud removal work is being carried out.
第３図、第４図を用いて従来実施されている酸化膜測定
方法について説明する。A conventional oxide film measuring method will be described with reference to FIGS. 3 and 4.
第３図は燃料チャンネルボックス３に付着しているクラ
ッド除去要領を示したものである。燃料チャンネルボッ
クス３をチャンネル着脱機５に装荷した状態で、ボール
６の先端に取付けられたブラシ７を燃料チャンネルボッ
クス３の表面上下方向に動かすことによって付着クラッ
ドの除去を行っている。ボールの操作は作業者の手作業
により行われている。FIG. 3 shows a procedure for removing crud attached to the fuel channel box 3. With the fuel channel box 3 loaded in the channel attachment/detachment machine 5, the attached crud is removed by moving the brush 7 attached to the tip of the ball 6 in the vertical direction on the surface of the fuel channel box 3. The ball is operated manually by an operator.
第４図はクラッド除去後の酸化膜測定要領を示したもの
である。ボール８の先端に取付けられた渦電流プローブ
９を燃料チャンネルボックス３の外表面に押付けること
により、酸化膜測定を実施している。FIG. 4 shows the procedure for measuring the oxide film after removing the cladding. An eddy current probe 9 attached to the tip of a ball 8 is pressed against the outer surface of the fuel channel box 3 to measure the oxide film.
上記従来技術では１作業性が悪いために、作業時間が長
くなり１作業マンアワーも大きいという問題があった。The above-mentioned conventional technology has a problem in that the work efficiency is poor, resulting in a long work time and a large man hour per work.
本発明の目的は酸化膜測定作業の効率を向上させること
にある。An object of the present invention is to improve the efficiency of oxide film measurement work.
本発明の特徴は、燃料チャンネルボックス酸化膜測定法
において、燃料チャンネルボックス保持機能を兼用した
付着クラッド除去機構を酸化膜測定機構の燃料チャンネ
ルボックス挿入上部位置に設置することにより、燃料チ
ャンネルボックスの装置への挿入時にクラッド除去を行
いながら、効率よく酸化膜測定を行うことにある。A feature of the present invention is that in the fuel channel box oxide film measurement method, an attached crud removal mechanism that also serves as a fuel channel box holding function is installed at the upper position of the fuel channel box insertion part of the oxide film measurement mechanism. The objective is to efficiently measure the oxide film while removing the cladding when inserting the device into the device.
［作用〕
クラッド除去機構はブラシをスプリング等の弾性体によ
り燃料チャンネルボックス表面に押付ける構造とするこ
とにより、燃料チャンネルボックスを装置に挿入する際
に、付着クラッドはブラシによって除去することができ
る。クラッド除去機構は酸化膜測定機構の燃料チャンネ
ルボックス上部位置に設置されているので、Ｎｔ化膜測
定機構に位置する燃料チャンネルボックス外表面は付着
クラッドが除去された状態となる。又、クラッド除去機
構において、ブラシがスプリング等により、燃料チャン
ネルボックスに押付けられているので、酸化膜測定時に
も、燃料チャンネルボックスは一定状態に保持され、安
定した状態で酸化膜測定を行うことができる。[Operation] The crud removal mechanism has a structure in which the brush is pressed against the surface of the fuel channel box by an elastic body such as a spring, so that the adhering crud can be removed by the brush when the fuel channel box is inserted into the device. Since the crud removal mechanism is installed at the upper part of the fuel channel box of the oxide film measurement mechanism, the outer surface of the fuel channel box located at the Nt oxide film measurement mechanism is in a state where the attached crud is removed. In addition, in the crud removal mechanism, the brush is pressed against the fuel channel box by a spring or the like, so the fuel channel box is held in a constant state even when measuring the oxide film, making it possible to measure the oxide film in a stable state. can.
以下、本発明の一実施例を第１図、第５１！！、第６図
により説明する。Hereinafter, one embodiment of the present invention will be described in Figs. 1 and 51! ! , will be explained with reference to FIG.
燃料チャンネルボックス酸化膜測定装置全体図を第１図
に示すが、酸化ｇｍ定装置１０はフレーム１１．ガイド
機構１２．クラッド除去機構１３゜酸化膜測定機構１４
より構成される。The overall view of the fuel channel box oxide film measuring device is shown in FIG. Guide mechanism 12. Crud removal mechanism 13° Oxide film measurement mechanism 14
It consists of
酸化膜測定装！！１０は、第１図に示すように、使用済
燃料貯蔵プール１５の壁に吊り下げた状態で使用される
。酸化膜測定装！ｔ１０のフレーム１１の上部は使用済
燃料貯蔵プール壁のカーブに取付けられる。Oxide film measuring device! ! 10 is used while being suspended from the wall of the spent fuel storage pool 15, as shown in FIG. Oxide film measuring device! The upper part of the frame 11 of t10 is attached to the curve of the wall of the spent fuel storage pool.
ガイド機構１２は入口部を広くした角錐状をし。The guide mechanism 12 has a pyramid shape with a wide entrance.
燃料チャンネルボックス３を挿入する時のガイドの役目
をはたす。It serves as a guide when inserting the fuel channel box 3.
クラッド除去機構１３を第５図に示す、クラッド除去機
構１３は燃料チャンネルボックス３の測定対象面に表面
付着クラッドを除去するためのブラシ１８が、スプリン
グ１９により燃料チャンネルボックス３の表面に押付け
られる。クラッド除去機構１３は燃料チャンネルボック
ス３を挿入する時にクラッドを除去する機能とともに、
酸化膜を測定する時に燃料チャンネルボックス３を一定
状態に保持する機能を持つ。The crud removal mechanism 13 is shown in FIG. 5. In the crud removal mechanism 13, a brush 18 for removing surface-adhered crud from the measurement target surface of the fuel channel box 3 is pressed against the surface of the fuel channel box 3 by a spring 19. The crud removal mechanism 13 has the function of removing crud when inserting the fuel channel box 3, and
It has a function of holding the fuel channel box 3 in a constant state when measuring the oxide film.
酸化膜測定機構１４を第６図に示す、酸化膜測定機構１
４はクラッド除去機構１３の下部側に配置され、渦電流
プローブ２０を遠隔駆動機ａ２１により、遠隔操作によ
って燃料チャンネルボックス３の外表面に押付ける機能
を持つ。The oxide film measuring mechanism 14 is shown in FIG.
4 is disposed on the lower side of the crud removal mechanism 13, and has the function of pressing the eddy current probe 20 against the outer surface of the fuel channel box 3 by remote control using a remote drive device a21.
次に、酸化膜測定装置１０を用いた燃料チャンネルボッ
クス３の酸化膜測定方法について説明する。Ｗ１定対象
燃料チャンネルボックス３は燃料把み装置等により酸化
膜測定装置１０に挿入される。Next, a method for measuring the oxide film of the fuel channel box 3 using the oxide film measuring device 10 will be described. The W1 constant target fuel channel box 3 is inserted into the oxide film measuring device 10 by a fuel gripping device or the like.
クラッド除去機［１３を通過する際に、ブラシ１８によ
って付着クラッドの除去が行われる。酸化膜測定機構１
４の位置まで挿入された燃料チャンネルボックス３の酸
化膜測定箇所は付着クラッドが除去された状態となって
いる６次に、フロア上での遠隔操作によって遠隔駆動機
構２１により渦電流プローブ２０を酸化膜測定箇所に押
付け。When passing through the crud remover [13], the adhering crud is removed by a brush 18. Oxide film measurement mechanism 1
The oxide film measurement point of the fuel channel box 3 inserted up to the position 4 is in a state where the attached crud has been removed. 6 Next, the eddy current probe 20 is oxidized by the remote drive mechanism 21 by remote control on the floor. Press onto the membrane measurement location.
燃料チャンネルボックス３の酸化膜測定を実施する。Measure the oxide film of the fuel channel box 3.
本実施例は酸化膜測定のみを対象とした酸化膜測定装置
について説明したものであるが、チャンネルボックス寸
法測定装置でも、クラッド除去機構１３と酸化膜測定機
構１４を設置することにより、効率よく酸化膜測定を実
施することができる。Although this embodiment describes an oxide film measurement device that only measures oxide film, a channel box dimension measurement device can also be used to efficiently measure oxidation by installing the cladding removal mechanism 13 and oxide film measurement mechanism 14. Membrane measurements can be performed.
本発明によれば、燃料チャンネルボックスを装置に挿入
する時に付着クラッドを除去できるので酸化膜測定作業
の効率を向上させることができる。According to the present invention, since the deposited crud can be removed when the fuel channel box is inserted into the apparatus, the efficiency of the oxide film measurement operation can be improved.
第１図は本発明の一実施例の燃料チャンネルボックス酸
化ＷＩ８１ＩＩ定装置の本体荷造図、第２図は燃料集合
体の構造図、第３図は従来の燃料チャンネルボックスの
クラッド除去要領図、第４図は従来の燃料チャンネルボ
ックスの酸化膜測定要領図、第５図は燃料チャンネルボ
ックス酸化膜測定装置のクラッド除去機端構造図、第６
図は燃料チャンネルボックス酸化膜測定装置の酸化膜測
定機構構造図を示す。
１・・・燃料集合体、２・・・燃料体、３・・・燃料チ
ャンネルボックス、４・・・チャンネルファスナ、５・
・・チャンネル着脱機、６・・・ポール、７・・・ブラ
シ、８・・・ポ第 ｌ 国
第 ２ 図
秦 ４ 口
奉 ５ 口Fig. 1 is a packing diagram of the main body of a fuel channel box oxidation WI81II device according to an embodiment of the present invention, Fig. 2 is a structural diagram of a fuel assembly, Fig. 3 is a diagram of the crud removal procedure of a conventional fuel channel box, Figure 4 is a conventional fuel channel box oxide film measurement procedure diagram, Figure 5 is a fuel channel box oxide film measuring device's crud removal machine end structure diagram, and Figure 6 is
The figure shows a structural diagram of the oxide film measuring mechanism of the fuel channel box oxide film measuring device. DESCRIPTION OF SYMBOLS 1... Fuel assembly, 2... Fuel body, 3... Fuel channel box, 4... Channel fastener, 5...
...Channel attachment/detachment machine, 6...Pole, 7...Brush, 8...Po No. 1 Country No. 2 Zuqin 4 Kubo 5 Kuchi
Claims (1)
装置において、 前記燃料チャンネルボックスの表面付着クラッドを除去
する機構と表面酸化膜厚を測定する機構を連接させた一
体型の装置とすることを特徴とする燃料チャンネルボッ
クス酸化膜測定装置。 ２、特許請求の範囲第１項において、前記燃料チャンネ
ルボックスを装置へ挿入する際に、前記燃料チャンネル
ボックスの測定ポイントが前記表面付着クラッドを除去
する機構を通過した後に表面酸化膜厚を測定する機構を
通過することを特徴とする燃料チャンネルボックス酸化
膜測定装置。 ３、特許請求の範囲第１項において、前記燃料チャンネ
ルボックスの前記表面付着クラッドを除去する機構をブ
ラシを前記燃料チャンネルボックスに弾性的に押付ける
構造とすることを特徴とする燃料チャンネルボックス酸
化膜測定装置。[Claims] 1. An apparatus for measuring the surface oxide film thickness of a fuel channel box, comprising: an integrated device in which a mechanism for removing cladding attached to the surface of the fuel channel box and a mechanism for measuring the surface oxide film thickness are connected; A fuel channel box oxide film measuring device, characterized in that it is a device. 2. In claim 1, when the fuel channel box is inserted into the device, the surface oxide film thickness is measured after the measurement point of the fuel channel box passes through a mechanism for removing the surface-adhered cladding. A fuel channel box oxide film measuring device characterized by passing through a mechanism. 3. The fuel channel box oxide film according to claim 1, wherein the mechanism for removing the cladding adhering to the surface of the fuel channel box has a structure in which a brush is elastically pressed against the fuel channel box. measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61298736A JPS63151810A (en) | 1986-12-17 | 1986-12-17 | Apparatus for measuring oxide film of fuel channel box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61298736A JPS63151810A (en) | 1986-12-17 | 1986-12-17 | Apparatus for measuring oxide film of fuel channel box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63151810A true JPS63151810A (en) | 1988-06-24 |
Family
ID=17863594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61298736A Pending JPS63151810A (en) | 1986-12-17 | 1986-12-17 | Apparatus for measuring oxide film of fuel channel box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63151810A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010091403A (en) * | 2008-10-08 | 2010-04-22 | Nuclear Fuel Ind Ltd | Device for measuring thickness of oxide film of fuel rod |
| US8699654B2 (en) | 2008-06-09 | 2014-04-15 | Westinghouse Electric Sweden Ab | Method comprising measurement on fuel channels of fuel assemblies for nuclear boiling water reactors |
-
1986
- 1986-12-17 JP JP61298736A patent/JPS63151810A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8699654B2 (en) | 2008-06-09 | 2014-04-15 | Westinghouse Electric Sweden Ab | Method comprising measurement on fuel channels of fuel assemblies for nuclear boiling water reactors |
| JP2010091403A (en) * | 2008-10-08 | 2010-04-22 | Nuclear Fuel Ind Ltd | Device for measuring thickness of oxide film of fuel rod |
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