基本信息
| 标准名称： | 海底管道系统规范 |
| 英文名称： | Codefor submarine pipeline Systems |
| 中标分类： |
工程建设 >>
原材料工业及通信、广播工程 >>
石油工程 |
| 替代情况： | 被SY/T 10037-2002代替 |
| 发布日期： | |
| 实施日期： | 1988-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
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前言
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引用标准
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所属分类： 工程建设 原材料工业及通信 广播工程 石油工程
【英文标准名称】:StandardPracticeforVerificationandUseofControlChartsinSpectrochemicalAnalysis
【原文标准名称】:化学光谱分析的控制图的检查和使用的标准规程
【标准号】:ASTME1329-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:E01.22
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:confidenceinterval;controlcharts;normalization;standardization;verification
【摘要】:Consistencyinanalysisdependsonbeingawareofasignificantchangeininstrumentalresponse,suchasthatcausedbydriftorchangesinanalyticalprecision,orboth,andtakingcorrectiveaction.Theusualcorrectiveactionfordriftisstandardization.Standardization,however,whenthereisnorealneed,canonlybroadenthespreadofsubsequentanalyses.Onepurposeofthispracticeistosetguidelinesthatwillavoidx201C;overstandardization.x201D;Tocontrolmanufacturingprocesses,theremustbeconfidencethataconsistentmaterialisbeingproducedandthattheanalysisofthematerialisreliable.Forassurancethatthematerialmeetsspecification,apurchasermayrequirethesupportingrecordofcontrolchartstoassessthatproperanalyticalcontrolhasbeenmaintained.Ideally,variationsinanalyticalresultsmaybeheldtochancecauses.Theconceptofaconfidenceintervalorlimitsonacontrolchartisbasedonwhatcanbeexpectedwhenallnormalprecautionsareexercised.Whenresultsappeartogooutofcontrol,theanalystshouldconsiderandcorrectwhatmightbeanassignablecause.Asexperienceisaccumulated,however,itmaynotseemunusualforreadingstodriftwithtimeasopticsdegrade,detectorresponsechanges,orexcitationsmodifyas,forexample,whendepositsbuilduponacounterelectrode(acorrectableassignablecause),orthelongerrangeeffectsasanX-raytubedeteriorates.1.1Thispracticecoversproceduresfordeterminingifaspectrochemicalanalysisisunderstatisticalcontrol.1.2Criteriaarepresentedfordeterminingwhencorrectiveactionisrequired.1.3Controlwillbeeffectedbyusingverifierstotestinstrumentresponse.Itisrecommended,althoughnotrequired,thatthisbeaccompaniedbytheplottingofcontrolcharts.1.4Thepreparationofcontrolchartsisdescribed.1.5Limitations8212;Theproceduresthataredescribeddonotapplytoanalysesthatrequireacalibrationeachtimeasetofanalysesisrun.Referenceismadespecificallytoopticalemissionspectroscopy,butthepracticehasamoregeneralapplication.1.6Thispracticedoesnotapplytovalidationproceduresthatmonitorthecorrectnessofcalibration.
【中国标准分类号】:G04
【国际标准分类号】:71_040_50
【页数】:12P.;A4
【正文语种】: