JP5570995B2 - 原子炉炉底部の補修方法 - Google Patents
原子炉炉底部の補修方法 Download PDFInfo
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- JP5570995B2 JP5570995B2 JP2010531933A JP2010531933A JP5570995B2 JP 5570995 B2 JP5570995 B2 JP 5570995B2 JP 2010531933 A JP2010531933 A JP 2010531933A JP 2010531933 A JP2010531933 A JP 2010531933A JP 5570995 B2 JP5570995 B2 JP 5570995B2
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- Prior art keywords
- reactor
- stub tube
- welding
- crack
- laser beam
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- 238000000034 method Methods 0.000 title claims description 36
- 230000008439 repair process Effects 0.000 title claims description 8
- 238000003466 welding Methods 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005336 cracking Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 238000009835 boiling Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/032—Joints between tubes and vessel walls, e.g. taking into account thermal stresses
- G21C13/036—Joints between tubes and vessel walls, e.g. taking into account thermal stresses the tube passing through the vessel wall, i.e. continuing on both sides of the wall
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/207—Assembling, maintenance or repair of reactor components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
- G21C17/01—Inspection of the inner surfaces of vessels
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
図1は本発明の第1実施形態による原子炉炉底部の補修方法を説明するための要部拡大図であり、図2(a)、(b)、(c)は手順を示す作用説明図である。
図3(a)、(b)、(c)は、本発明の第2実施形態を示す説明図であり、キャップ状部材8により覆う状態でシール溶接を行うことにより、CRDハウジングとスタブチューブとの溶接部5および図1で示したCRDハウジングの熱影響部のき裂からの炉水の漏洩を防ぐ方法を示す説明図であり、その手順および作用を示している。
図4および図5は本願の第3実施形態として、加圧水型原子炉(PWR)への適用例を示している。
Claims (5)
- CRDハウジングの上端から突出してスタブチューブ上端面まで覆い、内側でCRDハウジングとスタブチューブとの隅肉溶接部に干渉しない形状を有し、外径寸法がスタブチューブと略一致し、応力腐食割れ感受性の低い材料で構成されたキャップ状部材を被覆させ、その部材の下端部でスタブチューブとレーザシール溶接、上部でCRDハウジング側面とのレーザシール溶接をすることにより、CRDハウジングとスタブチューブとの溶接部およびCRDハウジングの熱影響部からの炉水の漏洩発生を予防することを特徴とする原子炉炉底部の補修方法。
- 前記キャップ状部材の下端部とスタブチューブとのレーザシール溶接を行う方法において、レーザビームに先行して不活性ガスを噴射し溶融部の水分を除去することに溶接時の噴出し事象を防ぐ請求項1記載の原子炉炉底部の補修方法。
- 前記キャップ状部材の上端部とCRDハウジングとのレーザシール溶接を行う方法において、レーザビームに先行して不活性ガスを噴射しキャップ状部材内部の水位を下げ溶融部の水分を除去し噴出し事象を防ぐ請求項1記載の原子炉炉底部の補修方法。
- スタブチューブ表面にき裂がある場合に、
加熱用レーザビームをき裂部分に照射に照射してき裂の水分を除去し、続いて溶接用レーザビームを照射してき裂部分を加熱溶融させ、これらの加熱用レーザビームおよび溶接用レーザビームを、筒状体の原子炉内部分の全面および筒状体と原子炉炉底部との溶接部のき裂に照射することにより、新たなき裂の発生を予防することを特徴とする請求項1から請求項3のいずれか1項記載の原子炉炉底部の補修方法。 - スタブチューブ表面にき裂がある場合に、
加熱用レーザビームの照射により前記き裂内部の水分を除去するとともに、追随して溶接用レーザビームの照射により加熱溶融させ、前記加熱用レーザビームおよび溶接用レーザビームを、スタブチューブの全面および前記スタブチューブと下鏡との溶接部に照射し、表面に応力腐食割れ感受性の低い材料で肉盛溶接を行い、スタブチューブ表面および下鏡との溶接部表面でのき裂を補修して、新たなき裂の発生を予防することを特徴とする請求項1から請求項4のいずれか1項記載の原子炉炉底部の補修方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010531933A JP5570995B2 (ja) | 2008-10-03 | 2009-10-02 | 原子炉炉底部の補修方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008258981 | 2008-10-03 | ||
JP2008258981 | 2008-10-03 | ||
PCT/JP2009/067270 WO2010038876A1 (ja) | 2008-10-03 | 2009-10-02 | 原子炉炉底部の補修方法 |
JP2010531933A JP5570995B2 (ja) | 2008-10-03 | 2009-10-02 | 原子炉炉底部の補修方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2010038876A1 JPWO2010038876A1 (ja) | 2012-03-01 |
JP5570995B2 true JP5570995B2 (ja) | 2014-08-13 |
Family
ID=42073633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010531933A Active JP5570995B2 (ja) | 2008-10-03 | 2009-10-02 | 原子炉炉底部の補修方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9136026B2 (ja) |
EP (1) | EP2343711B1 (ja) |
JP (1) | JP5570995B2 (ja) |
KR (1) | KR101296210B1 (ja) |
WO (1) | WO2010038876A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012216833B3 (de) * | 2012-09-19 | 2013-10-24 | Areva Gmbh | Vorrichtung zum Verschließen eines Antriebsgehäuserohrs |
JP6448224B2 (ja) * | 2014-06-16 | 2019-01-09 | 株式会社東芝 | 原子炉圧力容器の炉底部保護構造物 |
US9989182B2 (en) * | 2014-06-30 | 2018-06-05 | Sunspin Pty Ltd. | Method of forming a sealed joint between a tubular article and a sheet article |
CN106881539B (zh) * | 2017-03-31 | 2022-09-09 | 哈电集团(秦皇岛)重型装备有限公司 | 一种压力容器 |
CN110091120B (zh) * | 2019-06-13 | 2020-04-28 | 福建晋江热电有限公司 | 对含有裂纹的焊缝进行焊接修复的方法 |
CN110369980A (zh) * | 2019-08-16 | 2019-10-25 | 喻杰 | 一种可提高产品合格率的孔内壁耐磨层制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62263871A (ja) * | 1986-05-09 | 1987-11-16 | Babcock Hitachi Kk | 容器鏡部における管取付構造 |
JP2001242280A (ja) * | 2000-02-29 | 2001-09-07 | Hitachi Ltd | 欠陥補修方法 |
JP2003320472A (ja) * | 2002-05-08 | 2003-11-11 | Toshiba Corp | 表面欠陥の封止方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4826217A (en) * | 1986-03-31 | 1989-05-02 | Combustion Engineering, Inc. | Apparatus and method for sealing a tube joint |
US5227124A (en) * | 1989-08-04 | 1993-07-13 | Hitachi, Ltd. | Method and structure for preventive maintaining an elongated metal hollow member |
US5066846A (en) * | 1990-06-26 | 1991-11-19 | Westinghouse Electric Corp. | System and method for laser welding the inner surface of heat exchanger tubes |
US5359172A (en) * | 1992-12-30 | 1994-10-25 | Westinghouse Electric Corporation | Direct tube repair by laser welding |
JP3570460B2 (ja) | 1996-07-16 | 2004-09-29 | 石川島播磨重工業株式会社 | 浸透探傷装置の検査アダプタ |
US5796797A (en) * | 1997-02-14 | 1998-08-18 | General Electric Company | Method for sealing a stub tube in a nuclear reactor |
US5809098A (en) * | 1997-03-10 | 1998-09-15 | General Electric Company | Method for sealing a stub tube in a nuclear reactor |
US7206372B2 (en) * | 2002-07-15 | 2007-04-17 | General Electric Company | Methods of repairing leaking elongate hollow members in boiling water reactors |
JP4269703B2 (ja) | 2003-01-24 | 2009-05-27 | 株式会社Ihi | 溶接部加工装置 |
JP2004294372A (ja) | 2003-03-28 | 2004-10-21 | Toshiba Corp | 炉底部作業装置 |
JP4634865B2 (ja) | 2005-06-02 | 2011-02-16 | 株式会社東芝 | 炉底部検査補修装置及びその方法 |
US7754993B2 (en) | 2006-07-10 | 2010-07-13 | General Electric Company | Method for providing a dry environment for underwater repair of the reactor bottom head using a segmented caisson |
JP2008216012A (ja) * | 2007-03-02 | 2008-09-18 | Toshiba Corp | 原子炉内構造物の保全・補修装置 |
-
2009
- 2009-10-02 JP JP2010531933A patent/JP5570995B2/ja active Active
- 2009-10-02 EP EP09817908.8A patent/EP2343711B1/en not_active Not-in-force
- 2009-10-02 WO PCT/JP2009/067270 patent/WO2010038876A1/ja active Application Filing
- 2009-10-02 KR KR1020117007446A patent/KR101296210B1/ko active IP Right Grant
- 2009-10-02 US US13/122,330 patent/US9136026B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62263871A (ja) * | 1986-05-09 | 1987-11-16 | Babcock Hitachi Kk | 容器鏡部における管取付構造 |
JP2001242280A (ja) * | 2000-02-29 | 2001-09-07 | Hitachi Ltd | 欠陥補修方法 |
JP2003320472A (ja) * | 2002-05-08 | 2003-11-11 | Toshiba Corp | 表面欠陥の封止方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2343711A1 (en) | 2011-07-13 |
US9136026B2 (en) | 2015-09-15 |
KR20110063802A (ko) | 2011-06-14 |
US20110274229A1 (en) | 2011-11-10 |
WO2010038876A1 (ja) | 2010-04-08 |
KR101296210B1 (ko) | 2013-08-13 |
EP2343711B1 (en) | 2014-11-26 |
JPWO2010038876A1 (ja) | 2012-03-01 |
EP2343711A4 (en) | 2013-07-03 |
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