【英文标准名称】:Plastics-Injectionmouldingoftestspecimensofthermoplasticmaterials-Part1:generalprinciples,andmouldingofmultipurposeandbartestspecimens.
【原文标准名称】:塑料制品.热塑性材料试样的注模.第1部分:一般原则、多用途模制法及棒材试样
【标准号】:NFT51-294-1/A1-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-06-01
【实施或试行日期】:2002-06-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试样制备;试样;工具;热塑性聚合物;试件;注塑模;模塑材料;塑料;喷射铸造法;试验棒;试验;定义;注射成型机;注模过程
【英文主题词】:
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:5P;A4
【正文语种】:其他


【英文标准名称】:Specificationforinstallationandmaintenanceofgas-firedboilersofratedinputnotexceeding70kWnet
【原文标准名称】:额定输入不超过70kW网络的燃气炉的安装和维护用规范
【标准号】:BS6798-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-01-31
【实施或试行日期】:2009-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:锅炉;燃气对流供暖;燃气动力装置;热水锅炉;热水集中供暖;检验;装配;维护;额定值;选择;对流式供暖系统;一类家用煤气;二类家用煤气;三类家用煤气
【英文主题词】:Boilers;Gasspaceheating;Gas-powereddevices;Hot-waterboilers;Hot-watercentralheating;Inspection;Installation;Maintenance;Ratings;Selection;Space-heatingsystems;1stfamilygases;2ndfamilygases;3rdfamilygases
【摘要】:ThisBritishStandardspecifiesrequirementsfortheselection,installation,inspection,commissioningandmaintenanceofgas?firedboilersforcentralheatingandotherpurposes,whichhaveatotalratedheatinputnotexceeding70kW,basedonnetcalorificvalue.Thisincludescookerswithintegralboilersusedtoprovidecentralheating.Itappliestoboilersutilizing1st,2ndor3rdfamilygasesdesignedtooperateinthecondensingornon?condensingmodefortheheatingofdomesticdwellingsordomesticdwellingsincommercialpremisesbythecirculationofheatedwaterinopenorclosedsystems.Thisstandarddoesnotapplyto:boilerswitharatedinputofover70?kW;?groupsofboilerswithindividualratingsof70kWorlessbutwithaggregateinputsofover70kWasspecifiedinBS6644.NOTE1Groupsofboilerswithindividualratingsof70kWorlessbutwithaggregateinputsoflessthan70kWmaybeinstalledtothisstandardbutspecialistadviceonthesystemdesign,installationandcontrolneedstobesoughtfromtheappliancemanufacturer.Itdoesnotcoverthedetaileddesignandinstallationofthewholeheatingsystem,whichisspecifiedinBS5449.NOTE2WiththepublicationofEN12828,EN12831andEN14336itisnecessaryforBS5449tobedeclaredobsolescentandtobewithdrawnwithintwoyears.TheseEuropeanStandards,whichhavenowbeenadoptedasBritishStandards,arenotalignedtoUKdesignandinstallationpractices;theycovercommercialaswellasdomesticheatingsystemsandexcludehotwater.Consequently,theyarebeingamendedtoincludenationalannexescoveringalltherelevantmaterialfromBS5449.NOTE3Theinstallationofboilerswitharatedinputgreaterthan70kWiscoveredbyBS6644.AdditionalrequirementsfortheinstallationofbackboilerunitsarespecifiedinBS5871?1andBS5871-2.ThisstandardappliestoboilerswhichcarryaCEmarkandalsotopreviouslyusedboilerswhichdonotcarrytheCEmark(see4.2.1).NOTE4Inthisstandard,heatinputisexpressedintermsofnetcalorificvalues(CV),unlessstatedotherwise.Theratioofgrosstonetheatinputisapproximately1.11:1fornaturalgas,1.09:1forpropane,and1.08:1forbutane.NOTE5Itisessentialthatpersonscarryingouttheinstallationofanygasappliancebecompetenttodoso.AnnexAgivesinformationaboutthelegalrequirementswhichrelatetoapprovedoperativesandgasappliances.NOTE6Somepartsofthisstandardmightbeappropriatefortheinstallationofpoolandspaheaters.Themanufacturer’sinstructionsmayadvisewhichpartsarenotappropriate.Forexample,fordirectspaandpoolheaters,nocorrosioninhibitorsorchemicalcleaningarepermitted.
【中国标准分类号】:J98
【国际标准分类号】:91_140_10
【页数】:48P.;A4
【正文语种】:英语