电站锅炉小径管对接接头超声检测灵敏度补偿量的确定

20103210,(浙江省特种设备检验研究院,杭州310020):针对火力发电厂锅炉受热面小径管对接接头超声检测的特点,阐述了小径管对接接头超声检测灵敏度补偿的原因及灵敏度补偿量测定方法为了保证小径管对接接头超声检测的准确性可靠性,检测前建议对灵敏度补偿量进行实际测定:小径管;超声波检测;灵敏度补偿:TG115.28:B:10006656(2010)10081402DeterminationofSensitivityCompensationforUltrasonicInspectionofButtJointinSmallDiameterTubesofPowerPlantBoilerMUYanChun,JINGNanHui(ZhejiangProvinceSpecialEquipmentInspectionandResearchInstitute,Hangzhou310020,China)Abstract:Aimingatthecharacteristicsofultrasonicinspectionofsmalldiametertubesinboilerheatingsurfaceinthermalpowerplant,thereasonandmeasuringmethodofsensitivitycompensationforultrasonicinspectionofsmalltubewereelaborated.Inordertoensureaccuracyofsmalldiameterultrasonicinspection,sensitivitycompensationshouldbemeasuredactuallybeforeultrasonicinspection.Keywords:Smalldiametertubes;Ultrasonicinspection;SensitivitycompensationJB/T4730.32005[1]DL/T8202002[2],JB/T4730.3GS2mm20mmDL/T820DL11mm15mm,,,,JB/T4730.3DL/T820,:20091021:(1972-),,,TOFD1,,,,,,,:(1),,!6.3m,(2)814:20103210(JB/T4730.3GSDL/T820DL1),,(3)(),,,,,22.1:,1.5,,1JB4730GS(1);2(2)2.2(1)1,,2(,,),,,80%,1(2),2,,,,80%,2(3)1-2,3:EPOCH4;:5P66K2.5,5P66K31000MW1215P66K2.5/mm/dB31.87.23.85.542.76.03.65.450.88.13.55.460.39.43.25.163.510.13.15.2108.010.02.14.025P66K3/mm/dB31.87.23.95.742.76.03.85.650.88.13.65.660.39.43.45.563.510.13.25.5108.010.03.14.941000MW300MW,,X,,1000MW,,50.8mm8.1mm,SA213T12,5,3300MW,,54mm9.0mm,12Cr1MoV(下转第821页)815:20103210;,,22,,,1/dB+/dB+10.400.7730.350.7020.620.7740.580.751,3,:(1),,,(2),,,(上接第815页),6,45,,,(),,,,,:[1]JB/T4730.320053:[S].[2]DL/T8202002[S].821