DD CEN/TS 14773-2004 飞行器燃料舱中用作爆炸抑制剂和挡板材料的纤维聚酰胺材料.试验方法

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【英文标准名称】:Postalservices-Qualityofservice-Measurementoflossandsubstantialdelayinpriorityandfirstclasssinglepiecemailusingasurveyoftestletters
【原文标准名称】:飞行器燃料舱中用作爆炸抑制剂和挡板材料的纤维聚酰胺材料.试验方法
【标准号】:DDCEN/TS14773-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-09
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thisdocumentspecifiesmethodsformeasuringtheleveloflossandsubstantialdelay,usingasurveyoftestletters,ofdomesticandcross-borderpriorityandfirstclasssinglepiecelettermail,collected,processedanddistributedbypostalserviceoperators.Itisimpossibleinpracticetodistinguishbetweenitemswhichwillneverarriveanditemswhichhavebeendelayedforaverylongtime.Aminimumperiodisthereforedefinedafterwhichanitemthathasbeensentshallbetreatedasifithasbeenlostorsubstantiallydelayedforthepurposesofmeasurement.Theresultingoverallfigureforlossandsubstantialdelayistobeexpressedasapercentageofthetotalpostedpriorityandfirstclasssinglepiecemail.Thisindicatordoesnotmeasurethepostaloperator’soverallperformanceinawaywhichprovidesdirectcomparisonofpostalserviceoperators,anddoesnotincludeotherserviceperformanceindicatorsotherthanthoserelatedtolossandsubstantialdelay.Accordingtothisdocument,lossandsubstantialdelayisestimatedwithinspecifiedaccuracylimits.Whentheleveloflossisverysmallitmayonlybepossibletoestimateanupperlimitforthelevelofloss.ThisdocumenthasbeendevelopedfromandiscompatiblewiththerequirementsofEN13850forthemeasurementofthetransittimeofend-to-endservicesforsinglepieceprioritymailandfirstclassmail,sothatthesamesurveymaybeusedtomeasurelossandsubstantialdelayandon-timeperformance.Thusitcomprisesasetofrequirementsforthedesignofameasuringsysteminvolvingtheselectionanddistributionoftestletterssentandreceivedbyselectedpanellists,accordingtoaspecificationthatensuresthatthetestlettersampledesignisrepresentativeoftherealmailflows.Thisdocumentrelatestothemeasurementofthesocalled“normal”servicesgiventoprivatepersons/householdsandbusinessesthatpostmailatstreetletterboxes,overthecounteratpostoffices,havepickupsattheirofficesorgivetheirmaildirectlyatpostalserviceoperators’sortingcentres.Fortechnicalreasonsthisdocumentmaynotinallpartsbesuitableforthemeasuringofverysmallvolumesofmailandforoperatorswithlimitedcoverage.Thisdocumentisnotapplicableformeasuringtheleveloflossorsubstantialdelayforlargebulkmailers’servicesandhybridmailwhichrequiredifferentmeasurementsystemsandmethodologies.Thisdocumentincludesspecificationsforthequalitycontrolandauditingofthemeasurementsystemandforthereportingoflossandsubstantialdelayofmail.
【中国标准分类号】:G33
【国际标准分类号】:03_240
【页数】:39P.;A4
【正文语种】:英语