BS 6461-1-1984 烧固体燃料(含木柴和泥煤)的家用灶具的烟囱和烟道的安装.第1部分:砖砌烟囱和烟管实用规程
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【英文标准名称】:Installationofchimneysandfluesfordomesticappliancesburningsolidfuel(includingwoodandpeat)-Codeofpracticeformasonrychimneysandfluepipes
【原文标准名称】:烧固体燃料(含木柴和泥煤)的家用灶具的烟囱和烟道的安装.第1部分:砖砌烟囱和烟管实用规程
【标准号】:BS6461-1-1984
【标准状态】:作废
【国别】:英国
【发布日期】:1984-08-31
【实施或试行日期】:1984-08-31
【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】:砖砌体工程;设计;稳定性;砖;材料强度;烟囱;装配;施工作业;检修;炉膛;石;维修;混凝土;家用的;清洁设备;风荷载;清洁处理;布置;检验;高度;烟囱帽;耐久性;烟道;固体燃料装置
【英文主题词】:Bricks;Chimneyterminals;Chimneys;Cleaning;Cleaningequipment;Concretes;Constructionoperations;Design;Domestic;Durability;Flueblocks;Flues;Hearths;Height;Inspection;Installation;Layout;Maintenance;Masonrywork;Repair;Solid-fuelleddevices;Stability;Stone;Strengthofmaterials;Throats(chimneys);Windloading
【摘要】:Dealswithdesign,constructionandtesting.Maximumheatoutput45kW.Appendicescoverremedialactionfordefectivechimneys,andcleaningandmaintenance.
【中国标准分类号】:P24
【国际标准分类号】:91_060_40
【页数】:38P;A4
【正文语种】:英语
基本信息
| 标准名称： | 卧轴圆台平面磨床产品质量分等 |
| 替代情况： | JB/GQ.F1080-88 |
| 发布部门： | 上海磨床所 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
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： 仪器 仪表 工业自动化仪表与控制装置 工业控制与计算机应用装置
【英文标准名称】:StandardPracticeforUseofaDichromateDosimetrySystem
【原文标准名称】:重铬酸盐剂量测定系统使用的标准规程
【标准号】:ASTMISO/ASTM51401-2003
【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(US-ASTM)
【起草单位】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:ICS17.240;absorbeddose;absorbeddosemeasurements;dosimeter;dichromatedosimeter;dichromatedosimetrysystem;ionizingradiation
【摘要】:4.1Thedichromatesystemprovidesareliablemeansformeasuringabsorbeddoseinwater.Itisbasedonaprocessofreductionofdichromateionstochromicionsinacidicaqueoussolutionbyionizingradiation.4.2Thedosimeterisasolutioncontainingsilveranddichromateionsinperchloricacidinanappropriatecontainersuchasasealedglassampoule.Thesolutionindicatesabsorbeddosebyachange(decrease)inopticalabsorbanceataspecifiedwavelength(s)(3).Acalibratedspectrophotometerisusedtomeasuretheabsorbance.4.3EffectofIrradiationTemperature:4.3.1Thedosimeterresponsehasatemperaturedependenceduringirradiationthatisapproximatelyequalto-0.2%perdegreeCelsiusbetween25and50176;C.Attemperaturesbelow25176;C,thedependenceissmaller.Thedosimeterresponsebetween5and50176;CisshowninTable1,wheretheresponseatagiventemperatureistabulatedrelativetotheresponseat25176;C(4,5).4.3.2ThedatainTable1maybefittedwithanappropriateformulaforconvenienceofinterpolationasfollows:Rt5b01b1tb2(2)where:Rt=dosimeterresponseattemperaturetrelativetothatat25176;C.ThecurvegeneratedfromthefitteddataisshowninFig.1.4.4Noeffectofambientlight(evendirectsunlight)hasbeenobservedondichromatesolutionsinglassampoules(6).4.5Forcalibrationwithphotons,thedichromatedosimetershallbeirradiatedunderconditionsthatapproximateelectronequilibrium.4.6TheabsorbeddoseinmaterialsotherthanwaterirradiatedunderequivalentconditionsmaybecalculatedusingtheproceduresgiveninASTMPracticesE666,E668andISO/ASTMGuide51261.4.7Thedosimeterresponseisdependentonthetypeandenergyoftheradiationemployed.Forexample,theresponseinhighenergy(10MeV)electronbeamsisreportedtobeapproximately3%lowerthantheresponseincobalt-60radiation(2).Thedosimetershallbecalibratedinaradiationfieldofthesametypeandenergyasthatinwhichitistobeused.4.8Providedthedosimetersolutionispreparedasdescribedinthisdocument,andstepsaretakentoavoidcontamination,thedosimetersolutionstoredorsealedinglassvessels(forexample,ampoules)isstablebeforeandafterirradiation.1.1Thispracticecoversthepreparation,testing,andprocedureforusingtheacidicaqueoussilverdichromatedosimetrysystemtomeasureabsorbeddoseinwaterwhenexposedtoionizingradiation.Thesystemconsistsofadosimeterandappropriateanalyticalinstrumentation.Forsimplicity,thesystemwillbereferredtoasthedichromatesystem.Itisclassifiedasareferencestandarddosimetrysystem(seeISO/ASTMGuide51261).1.2Thispracticedescribesthespectrophotometricanalysisproceduresforthedichromatesystem.1.3Thispracticeappliesonlyto947;-rays,x-rays/bremsstrahlun,andhighenergyelectrons.1.4Thispracticeappliesprovidedthefollowingconditionsaresatisfied:1.4.1Theabsorbeddoserangeisfrom2X103to5X104Gy.1.4.2Theabsorbeddoseratedoesnotexceed600Gy/pulse(12.5pulsespersecond),ordoesnotexceedanequivalentdoserateof7.5kGy/sfromcontinuoussources(1).1.4.3Forradionuclidegamma-raysources,theinitialphotonenergyshallbegreaterthan0.6MeV.Forbremsstrahlungphotons,theinitialenergyoftheelectronsusedtoproducethebremsstrahlungphotonsshallbeequaltoorgreaterthan2MeV.Forelectronbeams,theinitialelectronenergyshallbegreaterthan8MeV.Note18212;Thelowerenergylimitsgivenareappropriateforacylindricaldosimeterampouleof12mmdiameter.Correctionsfordisplacementeffectsanddosegradientacrosstheampoulemayberequiredforelectronbeams(2).Thedichromatesystemmaybeusedatlowerenergiesbyemployingth......
【中国标准分类号】:
【国际标准分类号】:17_240
【页数】:6P.;A4
【正文语种】:
