HG 20225-1995 化工金属管道工程施工及验收规范

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基本信息
标准名称:化工金属管道工程施工及验收规范
英文名称:Metallic Piping Construction and Acceptance Code for Chemical Engineering
中标分类: 工程建设 >> 工业设备安装工程 >> 金属设备与工艺管道安装工程
ICS分类: 流体系统和通用件 >> 管道部件和管道
发布部门:化学工业部
发布日期:1995-03-27
实施日期:1996-03-01
首发日期:1900-01-01
作废日期:2011-08-15
出版日期:1900-01-01
页数:96页
适用范围

为提高化工行业金属管道工程的施工水平,保证工程质量,制定本标准。本标准适用于化工行业金属管道的施工及工程交接验收。

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所属分类: 工程建设 工业设备安装工程 金属设备与工艺管道安装工程 流体系统和通用件 管道部件和管道
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【英文标准名称】:Aerospaceseries-Fibresandcables,optical,aircraftuse-Testmethods-Part202:Fibredimensions;GermanandEnglishversionEN3745-202:2005
【原文标准名称】:航空航天系列.航空用光缆和光纤.试验方法.第202部分:光纤尺寸;德文版本和英文版本EN3745-202:2005
【标准号】:EN3745-202-2005
【标准状态】:现行
【国别】:
【发布日期】:2006-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aeronauticalengineering;Aerospacetransport;Airtransport;Aircraft;Cables;Concentricity;Departurefromcircularity;Diameter;Dimensions;Fibreoptics;Glassfibrecables;Glassfibres;Measuringtechniques;Methods;Multilingual;Opticalwaveguides;Testing
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:49_060
【页数】:13P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasurementofRadioFrequencyInducedHeatingNearPassiveImplantsDuringMagneticResonanceImaging
【原文标准名称】:磁共振成像时测量射频感应加热接近被动性植入物的标准试验方法
【标准号】:ASTMF2182-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:F04.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:implant;MRI(magneticresonanceimaging);MRsafety;RF(radiofrequency)heating;MRI(magneticresonanceimaging);Passiveimplants;RF-inducedtemperaturerise;RF(radiofrequency)receivers;Specificabsorptionrate(SAR);Wholebodymagneticres
【摘要】:ThistestmethoddescribesatestprocedureforevaluatingtheRF-inducedtemperatureriseassociatedwithanMRprocedureinvolvingaspecificfrequencyofRFirradiationofanimplant.Theheatingmeasurementsaremadetwice,oncewiththeimplantandthenrepeatedatthesamelocationwithouttheimplant.ThesetwomeasurementsestimatethelocalSARandthelocaladditionaltemperaturerisewiththeimplant.Ifthereisasignificanttemperatureriseassociatedwiththeimplant,theresultsmaybeusedasaninputtoacomputationalmodelforestimatingtemperatureriseinapatient.ThecombinationofthetestresultsandthecomputationalmodelresultsmaythenbeprovidedtoregulatorybodiesandphysicianstoassessthesafetyofapatientwiththeimplantduringanMRscan.1.1Thistestmethodcoversmeasurementofradiofrequency(RF)inducedheatingonornearapassivemedicalimplantanditssurroundingsduringmagneticresonanceimaging(MRI).1.2ThistestmethodisoneofthoserequiredtodetermineifthepresenceofapassiveimplantmaycauseinjurytothepatientwiththeimplantduringanMRprocedure.Othersafetyissuesthatshouldbeaddressedincludemagneticallyinduceddisplacementforceandtorque.1.3TheamountofRF-inducedtemperatureriseforagivenspecificabsorptionrate(SAR)willdependontheRFfrequency,whichisdependentonthestaticmagneticfieldstrengthoftheMRsystem.Becauseofpossibleadditionalheating,particularlywhenimplantdimensionsapproachesorexceedsonequarterofthewavelengthoftheRFfieldinsidethephantom,conclusionsfrommeasurementsmadeatonestaticmagneticfieldstrengthdonotapplytootherfieldstrengthsandfrequencies.Whilethefocusinthistestmethodison1.5Tor3TeslacylindricalboreMRsystems,theRF-inducedtemperatureriseforanimplantinopenMRsystemscanbeevaluatedbysuitablemodificationofthemethoddescribedherein.1.4Thistestmethodassumesthattestingisdoneondevicesthatwillbeentirelyinsidethebody.Forotherimplantationconditions(forexample,externalfixationdevices,percutaneousneedles,cathetersortethereddevicessuchasablationprobes),modificationsofthistestmethodarenecessary.1.5Thistestmethodappliestowholebodymagneticresonanceequipment,asdefinedinsection2.2.103oftheIECStandard60601-2-33,Ed.2.0,withawholebodyRFtransmitcoilasdefinedinsection2.2.100.TheRFcoilisassumedtohavequadratureexcitation.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C45
【国际标准分类号】:11_040_40
【页数】:12P.;A4
【正文语种】:英语