JP4895142B2 - 酸化膜厚さ測定方法 - Google Patents
酸化膜厚さ測定方法 Download PDFInfo
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- JP4895142B2 JP4895142B2 JP2008322514A JP2008322514A JP4895142B2 JP 4895142 B2 JP4895142 B2 JP 4895142B2 JP 2008322514 A JP2008322514 A JP 2008322514A JP 2008322514 A JP2008322514 A JP 2008322514A JP 4895142 B2 JP4895142 B2 JP 4895142B2
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- cladding
- oxide film
- thickness
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- film thickness
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- 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
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
まず、本発明に係る酸化膜厚さの測定原理について説明する。
まず、0ラベルラインをベクトル平面図上で表示するために、測定対象の燃料棒被覆管と同様な環境に配置した未照射の被覆管表面上に渦電流センサをゆっくり近づけることで、基準となるリフトオフ成分Lの開始点(0点)を求める。模擬試料を用いて実験的に求めた0レベルラインをリフトオフ成分Lの開始点(0点)を通るように引く。この際に、0レベルラインで求めておいたリフトオフ成分Lを基準となるベクトル表示中のリフトオフ成分Lと重ねることで、実験的に求めた0レベルラインの位相角度が決まってくる。このベクトル平面図中に測定値mが得られれば、上述したように容易に酸化膜厚さを求めることができる。
Claims (3)
- 渦電流センサと未照射燃料被覆管上に被覆した厚さの異なる模擬磁性クラッド試料と未照射燃料被覆管の肉厚変化試料を用いて、磁性クラッドに起因する位相角度と被覆管肉厚変化による位相角度が同一方向となる周波数を求める工程と、この周波数を印加した渦電流センサと未照射燃料被覆管からベクトル平面図上のゼロ点を求める工程と、同周波数にて渦電流センサを測定対象の被覆管表面に接触させインピーダンス値を求める工程と、前記インピーダンス値をリフトオフ成分と前記同一方向の位相角度成分に分解する工程と、前記分解されたリフトオフ成分から酸化膜厚さを求める工程からなることを特徴とする酸化膜厚さ測定方法。
- 前記分解された前記同一方向の位相角度成分から磁性クラッド厚さを測定する工程をさらに備えることを特徴とする請求項1記載の酸化膜厚さ測定方法。
- 測定対象が原子炉燃料体の構成材であるスペーサ又はチャンネル材、あるいは薄板の非磁性金属材であることを特徴とする請求項1又は2記載の酸化膜厚さ測定方法。
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JP2008322514A JP4895142B2 (ja) | 2008-12-18 | 2008-12-18 | 酸化膜厚さ測定方法 |
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JP2010145233A JP2010145233A (ja) | 2010-07-01 |
JP4895142B2 true JP4895142B2 (ja) | 2012-03-14 |
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JP2008322514A Expired - Fee Related JP4895142B2 (ja) | 2008-12-18 | 2008-12-18 | 酸化膜厚さ測定方法 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109346201B (zh) * | 2018-11-22 | 2019-11-19 | 河北工业大学 | 一种基于等效容积测量的核燃料组件内部变形检测装置 |
CN109360670B (zh) * | 2018-12-03 | 2020-06-09 | 河北工业大学 | 一种自适应对中核燃料组件多功能检测装置 |
CN109373885B (zh) * | 2018-12-21 | 2019-12-27 | 河北工业大学 | 一种基于阵列式柔性检测的核燃料组件多功能检测装置 |
CN111256574B (zh) * | 2020-03-25 | 2021-01-01 | 北京理工大学 | 一种金属管道厚度测量方法及系统 |
CN113932700B (zh) * | 2021-09-28 | 2022-06-24 | 中国矿业大学 | 一种基于阻抗坐标变换的热障涂层粘结层厚度测量方法 |
CN115096675B (zh) * | 2022-06-07 | 2023-08-11 | 佛山科学技术学院 | 一种用于水下涡流检测的锆管标定样件及其制备方法 |
CN115980178A (zh) * | 2022-12-23 | 2023-04-18 | 中国核动力研究设计院 | 燃料棒氧化膜标样组件及其制备方法、应用 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6271801A (ja) * | 1985-09-26 | 1987-04-02 | Toshiba Corp | ジルコニウム基合金部材の酸化層厚さ測定用標準試料 |
US5341678A (en) * | 1993-05-12 | 1994-08-30 | General Electric Company | Method for determining thickness of ferromagnetic material deposition on nuclear fuel rods |
JPH11142577A (ja) * | 1997-11-07 | 1999-05-28 | Hitachi Ltd | 酸化膜厚測定システム |
JP3378500B2 (ja) * | 1998-05-08 | 2003-02-17 | 株式会社日立製作所 | 燃料被覆管の渦電流検査装置 |
US6366083B1 (en) * | 1999-09-17 | 2002-04-02 | Framatome Anp Inc. | Method for measuring the thickness of oxide layer underlying crud layer containing ferromagnetic material on nuclear fuel rods |
US6369566B1 (en) * | 1999-09-27 | 2002-04-09 | Framatone Anp Inc. | Method for measuring crud thickness on nuclear fuel rods |
DE10123975A1 (de) * | 2001-05-17 | 2002-12-05 | Framatome Anp Gmbh | Meßkopf, insbesondere zum Einsatz bei der Vermessung eines Brennstabs, eines Brennelementkastens und/oder eines Abstandshalters oder sonstige Strukturteile in einem Brennelement einer kerntechnischen Anlage |
JP2003139885A (ja) * | 2001-07-31 | 2003-05-14 | General Electric Co <Ge> | 照射済み核燃料棒の金属厚さを検知する方法 |
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