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【英文标准名称】:StandardPracticeforUltrasonicExaminationofTurbine-GeneratorSteelRetainingRings
【原文标准名称】:涡轮发电机钢定位环的超声波检验的标准作法
【标准号】:ASTMA531/A531M-1991(2006)
【标准状态】:现行
【国别】:美国
【发布日期】:1991
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A01.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Thispracticecoverstheprocedurestobefollowedwhenperformingultrasonicshearandlongitudinalwavetestsonturbine-generatorretainingringswithaninsidediametertowallthicknessratioequaltoorgreaterthan5:1andwithwallthicknessesfrom1to4in.(25to102mm).1.2Althoughthispracticedescribesmethodsofultrasonicallytestingretainingringsbyeitherthecontactorimmersionmethod,itshallnotrestricttheuseofimprovedinspectionmethodsastheyaredeveloped.Itisrecognizedthattechniquesforexaminationandevaluationmaybechoseninordertoenhanceorimprovetheresultsortoaccommodatevariationsinprocedures,equipment,orcapabilities.Consideringthesecharacteristics,forgingsmaybeinspectedbyacombinationofboththecontactandtheimmersionmethods,asmutuallyagreeduponbetweenthemanufacturerandthepurchaser.1.3Thispracticeandtheapplicablematerialspecificationsareexpressedinbothinch-poundunitsandSIunits.However,unlesstheorderspecifiestheapplicable"M"specificationdesignationSIunits,thematerialshallbefurnishedtoinch-poundunits.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:21_060_60
【页数】:5P.;A4
【正文语种】:英语