JJG 259-1989 标准金属量器检定规程
时间:2024-05-27 22:44:17 来源: 标准资料网 作者:标准资料网 阅读:8912
基本信息
标准名称: | 标准金属量器检定规程 |
英文名称: | Verification Regulation of Standard Metal Tank |
中标分类: |
综合 >>
计量 >>
力学计量 |
替代情况: | JJG 259-81;JJG 259-2005 |
发布日期: | 1989-07-21 |
实施日期: | 1991-07-01 |
首发日期: | |
作废日期: | 2006-03-05 |
出版日期: | |
页数: | 14页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 综合 计量 力学计量
【英文标准名称】:StandardGuideforDevelopingAppropriateStatisticalApproachesforGround-WaterDetectionMonitoringPrograms
【原文标准名称】:地下水探测监测程序用开发适当的统计近似值的标准指南
【标准号】:ASTMD6312-1998(2005)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:探测监测;预测限制;废弃物处理设施;控制图;统计学;地下水
【英文主题词】:controlcharts;detectionmonitoring;groundwater;predictionlimits;statistics;wastedisposalfacilities
【摘要】:Theprincipaluseofthisguideisinground-waterdetectionmonitoringofhazardousandmunicipalsolidwastedisposalfacilities.ThereisconsiderablevariabilityinthewayinwhichexistingGuideUSEPAregulationandguidanceareinterpretedandpracticed.Often,muchofcurrentpracticeleadstostatisticaldecisionrulesthatleadtoexcessivefalsepositiveorfalsenegativerates,orboth.Thesignificanceofthisproposedguideisthatitjointlyminimizesfalsepositiveandfalsenegativeratesatnominallevelswithoutsacrificingoneerrorforanother(whilemaintainingacceptablestatisticalpowertodetectactualimpactstoground-waterquality(4)).Usingthisguide,anowner/operatororregulatoryagencyshouldbeabletodevelopastatisticaldetectionmonitoringprogramthatwillnotfalselydetectcontaminationwhenitisabsentandwillnotfailtodetectcontaminationwhenitispresent.1.1Thisguidecoversthecontextofground-watermonitoringatwastedisposalfacilities,regulationshaverequiredstatisticalmethodsasthebasisforinvestigatingpotentialenvironmentalimpactduetowastedisposalfacilityoperation.Owner/operatorsmustperformastatisticalanalysisonaquarterlyorsemiannualbasis.Astatisticaltestisperformedoneachofmanyconstituents(forexample,10to50ormore)foreachofmanywells(5to100ormore).Theresultispotentiallyhundreds,andinsomecases,athousandormorestatisticalcomparisonsperformedoneachmonitoringevent.Evenifthefalsepositiverateforasingletestissmall(forexample,1%),thepossibilityoffailingatleastonetestonanymonitoringeventisvirtuallyguaranteed.Thisassumesyouhavedonethecorrectstatisticinthefirstplace.1.2Thisguideisintendedtoassistregulatorsandindustryindevelopingstatisticallypowerfulgound-watermonitoringprogramsforwastedisposalfacilities.Thepurposeofthesemethodsistodetectapotentialgound-waterimpactfromthefacilityattheearliestpossibletimewhilesimultaneouslyminimizingtheprobabilityoffalselyconcludingthatthefacilityhasimpactedgroundwaterwhenithasnot.1.3Whenappliedinappropriatelyexistingregulationandguidanceonstatisticalapproachestoground-watermonitoringoftensufferfromalackofstatisticalclarityandoftenimplementmethodsthatwilleitherfailtodetectcontaminationwhenitispresent(afalsenegativeresult)orconcludethatthefacilityhasimpactedgoundwaterwhenithasnot(afalsepositive).Historicalapproachestothisproblemhaveoftensacrificedonetypeoferrortomaintaincontrolovertheother.Forexample,someregulatoryapproacheserronthesideofconservatism,keepingfalsenegativeratesnearzerowhilefaslepositiveratesapproach100%.1.4Thepurposeofthisguideistoillustrateastatisticalground-watermonitoringstrategythatminimizesbothfalsenegativeandfalsepositiverateswithoutsacrificingonefortheother.1.5Thisguideisapplicabletostatisticalaspectsofground-waterdetectionmonitoringforhazardousandmunicipalsolidwastedisposalfacilities.1.6Itisofcriticalimportancetorealizethatonthebasisofastatisticalanalysisalone,itcanneverbeconcludedthatawastedisposalfacilityhasimpactedgroundwater.Astatisticallysignificantexceedanceoverbackgroundlevelsindicatesthatthenewmeasurementinaparticularmonitoringwellforaparticularconstituentisinconsistentwithchanceexpectationsbasedontheavailablesampleofbackgroundmeasurements.1.7Similarly,statisticalmethodscanneverovercomelimitationsofagroundwatermonitoringnetworkthatmightariseduetopoorsitecharacterization,wellinstallationandlocation,sampling,oranalysis.1.8Itisnotedthatwhenjustified,intra-wellcomparisonsarege......
【中国标准分类号】:Z16
【国际标准分类号】:13_030_40
【页数】:14P.;A4
【正文语种】:
MIL-STD-1610A, MILITARY SPECIFICATION: MAGNETIC TAPE RECORDER/REPRODUCER FORMATS FOR ASW SENSOR AND SYSTEMS DATA (06 JUL 1987)., This standard covers the magnetic tape recorder configurations to be used to record and reproduce ASW sensor and system data.