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Applicationsofunderwaterlaserweldingin nuclearpowerplantmaintenance JialeiZhu,XiangdongJiao MechanicalEngineeringCollege BeijingInstituteofPetrochemicalTechnology(BIPT) Beijing,China Abstract—Nuclearpowerasanefficient,clean,safeand▔ܝ⛞᥹㋏㒳ৃҹㅔ࣪੠䲚Ёˈ಴ℸ݊ᑨ⫼㣗ೈᑓˈৃҹ economicalenergy,istheinevitablechoiceforthefuture developmentofelectricpower.Nuclearpowerplantswillhave⫼Ѣ⣁ᇣᎹ԰ऎඳ˗▔ܝ⛞᥹ᡔᴃᰃḌ⬉ॖ䖰⿟໘⧚ⱘ᳔ fatiguecracksandstresscorrosioncrackwhichneedofweldingՇᎹ݋Пϔˈ⡍߿ᰃᇍѢডᑨ఼Ḍᖗ㒘ӊⱘ㓈ᡸ੠ׂ⧚DŽ repairafterlong-termrunning.Toreducethehazardsofnuclear radiationontheweldingoperatorandsurroundingenvironment ,underwaterweldingrepairmustbecarriedout.BecauselaserII.∈ϟ▔ܝ⛞᥹ᑨ⫼ weldinghastheadvantagesoflowheatinput,easytolong-ᇍѢ∈ϟ⑓⊩▔ܝ⛞᥹ˈᔧᎹӊ㸼䴶᳝ᇥ䞣∈ᄬ೼ˈ distancetransmissionandtheminiaturizationofdevices,making itbecomesoneofimportantmeansamongthenuclearህৃ㛑䗴៤⛞᥹᮴⊩䖯㸠DŽ಴ℸˈᖙ乏೼ᕙ⛞Ꮉӊ㸼䴶ᔶ underwaterweldingrepair.Inthispaper,applicationof៤ሔ䚼ᑆ➹ぎ䯈ˈՓᕫ∈ϟ▔ܝ⛞᥹೼∈ϟሔ䚼ᑆ➹ⱘぎ underwaterlaserweldingtechnologyinthenuclearpowerplants ⛞᥹೼ᔶᓣϞሲѢ∈ϟ⛞᥹Ёⱘܝ▔maintenancearesummarized.䯈ݙ䖯㸠ˈ಴ℸ∈ϟ Keywords-nuclearpower;laserwelding;underwaterwelding;ሔ䚼ᑆ⊩∈ϟ⛞᥹DŽḍ᥂ᥦ∈ҟ䋼ⱘϡৠˈ∈ϟ▔ܝ⛞᥹ 㺙㕂ࣙᣀ∈Ꮼᓣ஋ఈǃᛄᗻֱᡸ⇨ԧ஋ఈㄝDŽ I.ᓩ㿔㕢೑⦄᳝Ḍ⬉キ᭄䞣ЎᑻˈᰃϪ⬠Ϟᢹ᭄᳝䞣᳔ ೑ܜḌ⬉キⱘ䆒䅵ᇓੑϔ㠀Ў30̚40ᑈˈ䱣ⴔḌ⬉ॖ᳡໮ⱘ೑ᆊˈгᰃḌ⬉キ∈ϟẔׂᡔᴃⷨお੠ᑨ⫼ⱘ乚 ӊᓔྟߎ⦄Ϣ᳡ᕍᯊ䯈ᆊDŽԚ㕢೑ⱘḌ⬉キ∈ϟ⛞᥹ᡔᴃЏ㽕ԧ⦄೼㕢೑∈ϟᓎܗᕍᯊ䯈ⱘ䗤⏤๲ࡴˈডᑨේݙ䚼 ᳝݇ⱘ㗕࣪⦄䈵ˈབ㜤㱔ǃ⮆ࢇ੠ᑨ࡯㜤㱔㺖㒍ˈϹ䞡࿕䗴݀ৌ˄8&&ˈ8QGHUZDWHU&RQVWUXFWLRQ&RUSRUDWLRQ˅ 㚕Ḍ⬉キⱘℷᐌᅝܼ䖤㸠DŽЎњ᳈໻ⱘথ᣹⦄᳝Ḍ⬉キⱘⱘ⑓⊩∈ϟ⛞᥹੠㕢೑⬉࡯ⷨお䰶˄(35,ˈ(OHFWULF থ⬉㛑࡯ˈࡾ࡯Փ݊䖤㸠ᇓੑ䍙䖛40ᑈ⫮㟇60ᑈˈ䳔㽕3RZHU5HVHDUFK,QVWLWXWH˅ⱘሔ䚼ᥦ∈⇨㔽∈ϟ㥃㢃ϱ ⛞᥹ᡔᴃⱘⷨおⳌᇍ䕗ᇥϨᓔྟ䕗ܝ▔ᇍḌ⬉キݙ䚼㗕࣪ᵘӊ䖯㸠㓈ׂˈ݊Ёህࣙᣀ䴲ᐌ䞡㽕ⱘ⛞ˈ㗠ᇍѢ∈ϟ ᑈˈ㕢೑㽓ሟ⬉⇨݀ৌ˄:(&ˈ:HVWLQJKRXVHϔ乍˖⛞᥹㓈ׂᎹ԰DŽ೑໪ϔѯথሩḌ⬉䕗ᮽǃḌ⬉キ᭄ᰮDŽ 䞣䕗໮ⱘ೑ᆊˈ⛞᥹㓈ׂᎹ԰䞣Ꮖᕜ໻DŽ(OHFWULF&RPSDQ\˅੠㕢೑⬉࡯ⷨお䰶˄(35,ˈ(OHFWULF ▔Ḍ⬉キⱘ㓈ׂϡৠѢᐌ㾘⬉キ៪݊ᅗᎹϮ䚼䮼ⱘ㓈3RZHU5HVHDUFK,QVWLWXWH˅䖯㸠ড়԰ⷨおˈՓ⫼∈ϟ 㓱⛞ᡔᴃᇍ῵ᢳ㺖㒍䖯㸠ׂ໡DŽᑈ㕢೑⛞᥹Ϣ㓈ܝѢḌ⬉キ㋏㒳໻䚼ߚ໘Ѣ催ᬒᇘऎඳˈϡ߽Ѣ㓈ׂ⬅ˈׂ ೼އᴳ⛞᥹ᡔᴃҹ㾷ܝ▔ҎਬⳈ᥹᥹䖥ᕙׂ䚼ԡDŽ∈ϟ⦃๗ᇍḌ䕤ᇘ᳝ᔎ⚜ሣ㬑԰ׂᡔᴃЁᖗ˄:57&˅ᓔথњ∈ϟ Փᕫ⛞᥹᪡԰ৃҹ೼ᑆᓣᴵӊϟ㹿⽕ℶ⫮㟇ᇍ᪡԰㗙ㅵ䘧ݙ䚼ㄝ᳝䰤ৃ䖒㣗ೈݙḌ⬉ॖᆍ఼ݙ䚼ׂ໡ⱘೄ䲒DŽˈ⫼ ᳝㟈ੑӸᆇⱘ䕤ᇘᲈⓣऎඳ䖯㸠ˈ಴ℸ㱑✊∈ϟᴵӊЎ㓈᮹ᴀᰃḌ⬉キ㓈ׂ∈ϟ⛞᥹ᡔᴃথሩ᳔ᖿⱘ೑ᆊП ⛞᥹ᰃЏ㽕ⱘᡔᴃ᠟↉DŽᑈˈ᮹ᴀ⷇ܝ▔ϟҡ✊㗗㰥䞛㒇䆹ᮍϔˈ∈ϟމ⛞᥹ᏺᴹњ䇌໮ϡ֓ˈ೼ᕜ໮ᚙׂ \䖯㸠Ḍ⬉䆒໛ⱘ⛞᥹㓈ׂˈ∈ϟ⛞᥹ᰃⳂࠡℷ೼ᓔথᑊᎱ࣪៤䞡ᎹϮ݀ৌ˄,+,,VKLNDZDMLPD+DULPD