【英文标准名称】:StandardSpecificationforNuclear-GradeBoronCarbidePellets
【原文标准名称】:核纯级碳化硼丸的标准规范
【标准号】:ASTMC751-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:C26.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:硼;碳化物;核能;核技术;小丸
【英文主题词】:boroncarbidepellets;B4C;neutronabsorber;controlmaterial;NumberCode27.120.30(Fissilematerialsandnuclearfueltechnology);71.060.50(Salts)
【摘要】:1.1Thisspecificationappliestoboroncarbidepelletsforuseasacontrolmaterialinnuclearreactors.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30;71_060_50
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:StandardPracticeforConditionMonitoringofUsedLubricantsbyTrendAnalysisUsingFourierTransformInfrared(FT-IR)Spectrometry
【原文标准名称】:利用傅立叶变换红外线(FT-IR)光谱测定法通过趋势分析监测使用过的润滑剂状态的标准实施规程
【标准号】:ASTME2412-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D02.96
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:条件控制;工业用油;变换;分析;光谱测定法;红外线;润滑剂;傅立叶
【英文主题词】:additivepackages;basestockdegradation;conditionmonitoring;contamination;Fouriertransforminfrared;FT-IR;fuel;glycol;infrared;IR;lubricatingoils;nitration;oxidation;petroleumbasedextremepressurelubricants;petroleumlubricants;polyolestersyntheticlubricants;soot;sulfates;trendanalysis;water
【摘要】:Periodicsamplingandanalysisoflubricantshavelongbeenusedasameanstodetermineoverallmachineryhealth.Atomicemission(AE)andatomicabsorption(AA)spectroscopyareoftenemployedforwearmetalanalysis(forexample,TestMethodD5185).Anumberofphysicalpropertytestscomplimentwearmetalanalysisandareusedtoprovideinformationonlubricantcondition(forexample,TestMethodsD445,D2896,andD6304).MolecularanalysisoflubricantsandhydraulicfluidsbyFT-IRspectroscopyproducesdirectinformationonmolecularspeciesofinterest,includingadditives,fluidbreakdownproductsandexternalcontaminants,andthuscomplementswearmetalandotheranalysesusedinaconditionmonitoringprogram(1,4-8).1.1ThispracticecoverstheuseofFT-IRinmonitoringadditivedepletion,contaminantbuildupandbasestockdegradationinmachinerylubricants,hydraulicfluidsandotherfluidsusedinnormalmachineryoperation.Contaminantsmonitoredincludewater,soot,ethyleneglycol,fuelsandincorrectoil.Oxidation,nitrationandsulfonationofbasestocksaremonitoredasevidenceofdegradation.Theobjectiveofthismonitoringactivityistodiagnosetheoperationalconditionofthemachinebasedonfaultconditionsobservedintheoil.MeasurementanddatainterpretationparametersarepresentedtoallowoperatorsofdifferentFT-IRspectrometerstocompareresultsbyemployingthesametechniques.1.2Thispracticeisbasedontrendinganddistributionresponseanalysisfrommid-infraredabsorptionmeasurements.Whilecalibrationtogeneratephysicalconcentrationunitsmaybepossible,itisunnecessaryorimpracticalinmanycases.Warningoralarmlimits(thepointwheremaintenanceactiononamachinebeingmonitoredisrecommendedorrequired)canbedeterminedthroughstatisticalanalysis,historyofthesameorsimilarequipment,roundrobintestsorothermethodsinconjunctionwithcorrelationtoequipmentperformance.Thesewarningoralarmlimitscanbeafixedmaximumorminimumvalueforcomparisontoasinglemeasurementorcanalsobebasedonarateofchangeoftheresponsemeasured().Thispracticedescribesdistributionsbutdoesnotprecludeusingrate-of-changewarningsandalarms.Note1Itisnottheintentofthispracticetoestablishorrecommendnormal,cautionary,warningoralertlimitsforanymachinery.Suchlimitsshouldbeestablishedinconjunctionwithadviceandguidancefromthemachinerymanufacturerandmaintenancegroup.1.3Spectraanddistributionprofilespresentedhereinareforillustrativepurposesonly,andarenottobeconstruedasrepresentingorestablishinglubricantormachineryguidelines.1.4Thispracticeisdesignedasafast,simplespectroscopiccheckforconditionmonitoringofusedlubricantsandcanbeusedtoassistinthedeterminationofgeneralmachineryhealththroughmeasurementofpropertiesobservableinthemid-infraredspectrumsuchaswater,oiloxidation,andothersasnotedin.Theinfrareddatageneratedbythispracticeistypicallyusedinconjunctionwithothertestingmethods.Forexample,infraredspectroscopycannotdeterminewearmetallevelsoranyothertypeofelementalanalysis.Thepracticeaspresentedisnotintendedforthepredictionoflubricantphysicalproperties(forexample,viscosity,totalbasenumber,totalacidnumber,etc.).Thispracticeisdesignedformonitoringusedlubricantsandcanaidinthedeterminationofgeneralmachineryhealthandisnotdesignedfortheanalysisoflubricantcomposition,lubricantperformanceoradditivepackageformulations.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoft......
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:22P.;A4
【正文语种】: