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——(,071051)(,100013):,:;;;:TG115.28:A:100026656(2004)0820411206NONDESTRUCTIVETESTINGOFPRESSUREVESSELS:EDDYCURRENTTESTINGTECHNIQUELIXiao-ting(TheCollegeofQualityandTechnicalSupervisionofHebeiUniversity,Baoding071051,China)SHENGong-tian(ChinaSpecialEquipmentInspectionandResearchCenter,Beijing100013,China)Abstract:Theeddycurrenttesting(ET)techniqueusedtotubetestduringfabricationandin2servicetestingofpressurevesselarereviewed.Thesetechniquesincludeeddycurrenttesting(ET)offerromagneticsteeltubeandnon2ferromagneticmetallictubeduringfabrication,remoteETofin2serviceferromagneticsteeltube,ETofin2servicenon2ferromagneticmetallictubeandETofweldsbycomplexplaneanalysis.Keywords:Pressurevessels;Eddycurrenttesting;Tubes;Welds1,,,,,,,,,:GB/T5126GB/T5248GB/T7735GB/T12604.6GB/T12969.2GB/T14480JB4730,,,JB4730,ASME,,,,,,95%,;,,,,2000[1],,[2,3],2,,,,,,,,,1500kHz2.11,,180mm,,,,12,2a,2b,,2()3,,32.2,,,4,120°3,1,200mm,2,4,0.53.2mm4,,1.5mm,25mm,5%,0.3mm,1.3mm±15%,±0.05mm,3,50mm,5mm,,,,,1125kHz,5,2100mm,3120°±5°,5:150mm300500mm500mm0.41.3mm,±0105mm55,,≥0.6,≥10dB,30%50%,3,24,,,,,4.110Hz5KHz,,23,,:(1),,(2)(3)10Hz5KHz,(4)24(5)66a,23,,,6b,,,6c,,;,,,6:6a,b4.27A50%;B1.25;C20%3mm;D20%≥2;E,60%15mm180°270°,50%,≥2,,,74.3,,;,,,,;,,,10m/min;,,5,,,5.1,:(1)2,1kHz1MHz(2),(3),(4),5.2,8,A1.3mm(D≤20mm)1.7mm(D20mm)B44.8mm20%C13.2mm20%D11.6mm10%9,A11.3mm(D≤20mm)1.7mm(D20mm)B12.0mm80%C12.8mm60%D14.8mm40%E4418mm20%(200mm,100300mm)895.3,,;,,10,11,,,20m/min;,,10116,,,,,,,,95%,,,1%,,,,,,,,(),,,6.1,:(1)1kHz1MHz(2),,1mm,0.5mm1mm50%(3),,(4)10°,360°(5),(6),;,;,,1kHz1MHz6.2(EDM)0.5mm1.0mm2.0mmV,,±011mm≤0.2mm,126.3(1),100kHz12(2)V,V,;,1mmV80%;,;,(3),,,,;,;,(4)a)b),c),d),()e),/f)×1mm×5mm:[1]EN1711—2000,Non2destructiveexaminationofwelds———Eddycurrentexaminationofweldsbycomplexplaneanalysis[S].[2],.[A].[C].:2003.[3],,.[A].[C].:2003.