SH/T 1766.2-2008 石油间二甲苯纯度及烃类杂质的测定 气相色谱法
作者:标准资料网 时间:2024-05-08 23:32:27 浏览:9905
来源:标准资料网
基本信息
| 标准名称： | 石油间二甲苯纯度及烃类杂质的测定 气相色谱法 |
| 英文名称： | Petroleum m-Xylene-Determination of purity and hydrocarbon impurities-Gas chromatographic method |
| 中标分类： |
化工 >>
有机化工原料 >>
基本有机化工原料 |
| ICS分类： |
化工技术 >>
有机化学 >>
芳香烃
|
| 发布部门： | 中华人民共和国国家发展和改革委员会 |
| 发布日期： | 2008-04-23 |
| 实施日期： | 2008-10-01 |
| 首发日期： | |
| 作废日期： | |
| 提出单位： | 中国石油化工集团公司 |
| 归口单位： | 全国化学标准化技术委员会石油化学分技术委员会 |
| 起草单位： | 中国石油化工股份有限公司上海石油化工研究院 |
| 起草人： | 王川、李继文 |
| 出版社： | 中国石化出版社 |
| 出版日期： | 2008-10-01 |
| 页数： | 8页 |
| 书号： | 1580229·315 |
适用范围
本标准规定了用气相色谱法测定石油间二思甲苯的纯度及其烃类杂质含量。
本标准适用于测定纯度不小于99.0%(质量分数)的间二甲苯，以及浓度为0.001%~1.000%（质量分数）的非芳烃、苯、甲苯、乙苯、对二甲苯、邻二甲苯、正丙苯和异丙苯等烃类杂质。
前言
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引用标准
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所属分类： 化工 有机化工原料 基本有机化工原料 化工技术 有机化学 芳香烃
Product Code:SAE AIR5065
Title:Influence of Grain Flow on Bolt Integrity
Issuing Committee:Ams Amec Aerospace Metals And Engineering Committee
Scope:Performed tensile and fatigue tests on bolts to determine if cutting of materials flow lines at the bolt underhead would degrade bolt integrity. Five different alloys used in aerospace industry fatigue critical applications were employed to fabricate 5/16 to 1/2 inch diameter bolts. These bolts were machined from bar stock producing fully cut material flow lines under their heads. Tensile testing with and without underhead washers was performed along with industry standard fatigue testing.【英文标准名称】:StandardGuideforEvaluatingPerformanceCharacteristicsofPhased-ArrayUltrasonicExaminationInstrumentsandSystems
【原文标准名称】:评估性能特征的相控接收阵列超声波检验仪器和系统的标准指南
【标准号】:ASTME2491-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:E07.06
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:评定;检验;仪器;相;超声波学
【英文主题词】:characterization;focalpoint;phased-array;phased-arrayprobe;soundbeamprofile;ultrasound;
【摘要】:Thisguideisintendedtoevaluateperformanceassessmentofcombinationsofphased-arrayprobesandinstruments.Itisnotintendedtodefineperformanceandacceptancecriteria,butrathertoprovidedatafromwhichsuchcriteriamaybeestablished.Recommendedproceduresdescribedinthisguideareintendedtoprovideperformance-relatedmeasurementsthatcanbereproducedunderthespecifiedtestconditionsusingsimpletargetsandthephased-arraytestsystemitself.Itisintendedforphased-arrayflawdetectioninstrumentsoperatinginthenominalfrequencyrangeof1MHzto20MHz,buttheproceduresareapplicabletomeasurementsoninstrumentsutilizingsignificantlyhigherfrequencycomponents.Thisguideisnotintendedforservicecalibration,ormaintenanceofcircuitryforwhichthemanufacturerx2019;sinstructionsareavailable.Implementationofspecificassessmentsmayrequiremoredetailedproceduralinstructionsinaformatoftheusingfacility.Themeasurementdataobtainedmaybeemployedbyusersofthisguidetospecify,describe,orprovideaperformancecriteriaforprocurementandqualityassurance,orserviceevaluationoftheoperatingcharacteristicsofphased-arraysystems.Notallassessmentsdescribedinthisguideareapplicabletoallsystems.Allorportionsoftheguidemaybeusedasdeterminedbytheuser.1.1Thisguidedescribesproceduresforevaluatingsomeperformancecharacteristicsofphased-arrayultrasonicexaminationinstrumentsandsystems.1.2Evaluationofthesecharacteristicsisintendedtobeusedforcomparinginstrumentsandsystemsor,byperiodicrepetition,fordetectinglong-termchangesinthecharacteristicsofagiveninstrumentorsystemthatmaybeindicativeofimpendingfailure,andwhich,ifbeyondcertainlimits,willrequirecorrectivemaintenance.Instrumentcharacteristicsmeasuredinaccordancewiththisguideareexpressedintermsthatrelatetotheirpotentialusefulnessforultrasonicexaminations.Otherelectronicinstrumentcharacteristicsinphased-arrayunitsaresimilartonon-phased-arrayunitsandmaybemeasuredasdescribedinE1065orE1324.1.3Ultrasonicexaminationsystemsusingpulsed-wavetrainsandA-scanpresentation(rforvideo)maybeevaluated.1.4Thisguideestablishesnoperformancelimitsforexaminationsystems;ifsuchacceptancecriteriaarerequired,thesemustbespecifiedbytheusingparties.Whereacceptancecriteriaareimpliedhereintheyareforexampleonlyandaresubjecttomoreorlessrestrictivelimitsimposedbycustomersandenduserscontrollingdocuments.1.5Thespecificparameterstobeevaluated,conditionsandfrequencyoftest,andreportdatarequired,mustalsobedeterminedbytheuser.1.6Thisguidemaybeusedfortheevaluationofacompleteexaminationsystem,includingsearchunit,instrument,interconnections,scannerfixturesandconnectedalarmandauxiliarydevices,primarilyincaseswheresuchasystemisusedrepetitivelywithoutchangeorsubstitution.Thisguideisnotintendedtobeusedasasubstituteforcalibrationorstandardizationofaninstrumentorsystemtoinspectanygivenmaterial.1.7Requiredtestapparatusincludesselectedtestblocksandpositionencodersinadditiontotheinstrumentorsystemtobeevaluated.1.8Precautionsrelatingtotheapplicabilityoftheproceduresandinterpretationoftheresultsareincluded.1.9Alternateprocedures,suchasexamplesdescribedinthisdocument,orothers,mayonlybeusedwithcustomerapproval.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddete......
【中国标准分类号】:H26;N77
【国际标准分类号】:19_100
【页数】:17P.;A4
【正文语种】:
