【英文标准名称】:StandardPracticefortheCollectionofSamplesofFilterableandNonfilterableMatterinWater
【原文标准名称】:水中可滤和不可滤物质样品采集的标准实施规范
【标准号】:ASTMD6301-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:可过滤性;取样;水;过滤;腐蚀产物;膜过滤器
【英文主题词】:corrosionproducts;corrosionproductsampler;filtration;integratedsample;ionexchangemembranes;
【摘要】:Thetransportofanyfilterablematterorcorrosionproductsfromthepreboilercyclehasbeenshowntobedetrimentaltoalltypesofsteamgeneratingequipment.Corrosionproducttransportaslowas10ppbcanhavesignificantimpactonsteamgeneratorsperformance.DepositedcorrosionproductsonPWRsteamgeneratortubescanreduceheattransfer,and,ifthedepositissufficientlythick,canprovidealocalareaforimpuritiesinthebulkwatertoconcentrate,resultinginacorrosiveenvironment.InBWRplants,thetransportofcorrosionproductscancausefuelfailure,outofcoreradiationproblemsfromactivationreactions,andothermaterialrelatedproblems.Infossilplants,thetransportofcorrosionproductscanreduceheattransferintheboilersleadingtotubefailuresfromoverheating.Theremovalofthesecorrosionproductsbychemicalcleaningisexpensiveandpotentiallyharmfultotheboilertubes.Normally,grabsamplesarenotsensitiveenoughtodetectchangesinthelevelofcorrosionproducttransport.Also,systemtransientsmaybemissedbyonlytakinggrabsamples.Anintegratedsampleovertimewillincreasethesensitivityfordetectingthecorrosionproductsandprovideabetterunderstandingofthetotalcorrosionproducttransporttosteamgenerators.1.1Thispracticeisapplicableforsamplingcondensedsteamorwater,suchasboilerfeedwater,forthecollectionoffilterableand(optional)nonfilterablematterusing0.45-mmembranefilter(filterablematter)andionexchangemedia(nonfilterablematter).Asthemajorfilterablecontainmentfoundinmostboilerfeedwatersissomeformofcorrosionproductfromthepreboilersystem,thedeviceusedforthispracticeiscommonlycalledacorrosionproductsampler.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_45
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Gas-firedcentralheatingboilers-TypesB11andB11BSboilers,fittedwithatmosphericburnersofnominalheatinputnotexceeding70kW.
【原文标准名称】:燃气集中供暖锅炉.装配有标称输入热量不超过70kW的常压燃烧器的B11和B11BS型锅炉
【标准号】:NFD35-330/A4-2005
【标准状态】:现行
【国别】:法国
【发布日期】:2005-02-01
【实施或试行日期】:2005-02-20
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J98
【国际标准分类号】:91_140_10
【页数】:42P;A4
【正文语种】:其他