CB 335-1988 船用磁罗经方位圈技术条件
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基本信息
标准名称: | 船用磁罗经方位圈技术条件 |
中标分类: | 船舶 >> 船舶电气、观通、导航设备 >> 导航设备 |
替代情况: | CB 335-1964;被CB/T 335-2005代替 |
发布日期: | |
实施日期: | 1986-12-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 3页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 船舶 船舶电气 观通 导航设备 导航设备
下载地址: 点击此处下载
【英文标准名称】:Acoustics-Measurementofairbornenoiseemittedbysteamturbinesanddrivenmachinery
【原文标准名称】:声学.由蒸汽轮机和被驱动机器发出的气载噪音测量
【标准号】:BSEN61063-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1996-07-15
【实施或试行日期】:1996-07-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;涡轮机;试验条件;汽轮机;声学;声强;声测量;噪声;试验设备;报告
【英文主题词】:Acoustictesting;Acoustics;Machinenoise;Noisemeasurements;Soundpressure;Steamturbines;Turbines
【摘要】:1General1.1ThisInternationalStandardappliestothemeasurementofairbornenoiseemittedbyassembliescomprisingsteamturbinesanddrivenmachinery,hereinafterreferredtoasturbinesets.Thesesetsareofallsizeswithoutlimitationofoutputwhenfittedwiththeirnormalauxiliaries.Thisstandardappliesonlytothepartoftheturbineset(turbine,generatorandattachedcomponents)locatedabovetheflooroftheturbineroomandin-sideacontinuousenvelopingmeasurementsurfaceboundedbythisfloor.Anextensiveandcontinuousturbineoperatingfloorofareflectingnatureabovetheturbinefoundationfloorlevelshallbeconsideredasthereflectingplane.1.2Inthecaseoflargeturbinesets,theturbineoperatingfloorisoftenlocatedbelowandnearthehorizontalcentrelineoftheturbine(seefigure1).Ifthisflooriscontinuousandfreefromopeningswhichwouldotherwiseallownoiseradiatedbelowtheturbineoperatingfloortoinfluencethenoisemeasuredatmicrophonelocations,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.3Inthecasewheretheturbineoperatingfloorislocatedbelowandnearthehorizontalcenterlineoftheturbineset,butconsistsof:a)anopengratingconstruction,orb)asolidfloorwithopeningsneartotheboundaryoftheturbineset,orc)walkwaystypically1to2mwideofeithersolidorgratedconstruction,theturbineoperatingfloorcannotbeconsideredasareflectingplane.Inthiscasethereflectingplanewillbetheturbinesetfoundationfloor.Inthecaseofthecontinuousenvelopingmeasurementsurfacebeingboundedbyeithertheturbineoperatingfloorortheturbinefoundationfloor,alargecontributionfromthenoiseofancillaryandauxiliaryplantiocatedbelowtheturbineoperatingfloormaybeexpectedatthemicrophonemeasuringpositions.Inthiscasetheuseofthisstandardforthedeterminationofsoundpowerlevelsisnotvalid.Ifthisstandardistobeemployedforthepurposeofthecomparisonofthe1msoundlevelsofsimilarturbines,theturbineoperatingfloorshallbeusedastheboundingsurfaceforthecontinuousenvelopingmeasurementsurface.Thevalidityofcomparativemeasure-mentswilldependonthenoisepresentatthemeasurementpositionsduetoauxiliaryandancillaryplantanditwillbenecessarytodefineexactlythenumber,typeandlocationoftheseitems.ItispreferabletoestablishtheeffectauxiliaryandancillaryplantnoiseradiationwillhaveonthesoundlevelatthemicrophonelocationsbydeterminingthenoiseemissionoftheseitemsinaccordancewithISO3746,anddeterminingthepropagationofthisnoisetomicro-phonelocations.However,thisprocedureisbeyondthescopeofthisstandard.NOTE-Whenopeningsintheflooraresuitablyblockedduringthetestwithappropriatepanels(uppersideofpanelsshouldhavesamereflectivecharacteristicsastheturbineoperatingfloor),validmeasure-mentsarepermitted.1.4Inthecaseofturbinesetsmountedon,orpartiallysubmergedin,thefoundationfloor,whichmayalsobedefinedastheturbineoperatingfloor,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.5Wherenoisecontroltreatmentssuchasenclosuresand/orscreensarefittedtotheturbineset,drivenequipmentandauxiliaries,thetype,locationandextentoftreatmentshallbereported.2MeasurementuncertaintyMeasurementsmadeinconformitywiththisstandardtendtoresultinstandarddeviationswhichareequaltoorlessthanthosegivenintable1.NOTES1Ifthemethodspecifiedinthisstandardisusedtocomparethesoundpowerlevelsofsimilarmachinesthatareomnidirectionalandradiatebroadbandnoise,theuncertaintyinthiscomparisontendstoresultinastandarddeviationwhichisequaltoorlessthan3dBprovidedthatthemeasurementsareperf
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;27_040
【页数】:26P;A4
【正文语种】:英语
【原文标准名称】:声学.由蒸汽轮机和被驱动机器发出的气载噪音测量
【标准号】:BSEN61063-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1996-07-15
【实施或试行日期】:1996-07-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;涡轮机;试验条件;汽轮机;声学;声强;声测量;噪声;试验设备;报告
【英文主题词】:Acoustictesting;Acoustics;Machinenoise;Noisemeasurements;Soundpressure;Steamturbines;Turbines
【摘要】:1General1.1ThisInternationalStandardappliestothemeasurementofairbornenoiseemittedbyassembliescomprisingsteamturbinesanddrivenmachinery,hereinafterreferredtoasturbinesets.Thesesetsareofallsizeswithoutlimitationofoutputwhenfittedwiththeirnormalauxiliaries.Thisstandardappliesonlytothepartoftheturbineset(turbine,generatorandattachedcomponents)locatedabovetheflooroftheturbineroomandin-sideacontinuousenvelopingmeasurementsurfaceboundedbythisfloor.Anextensiveandcontinuousturbineoperatingfloorofareflectingnatureabovetheturbinefoundationfloorlevelshallbeconsideredasthereflectingplane.1.2Inthecaseoflargeturbinesets,theturbineoperatingfloorisoftenlocatedbelowandnearthehorizontalcentrelineoftheturbine(seefigure1).Ifthisflooriscontinuousandfreefromopeningswhichwouldotherwiseallownoiseradiatedbelowtheturbineoperatingfloortoinfluencethenoisemeasuredatmicrophonelocations,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.3Inthecasewheretheturbineoperatingfloorislocatedbelowandnearthehorizontalcenterlineoftheturbineset,butconsistsof:a)anopengratingconstruction,orb)asolidfloorwithopeningsneartotheboundaryoftheturbineset,orc)walkwaystypically1to2mwideofeithersolidorgratedconstruction,theturbineoperatingfloorcannotbeconsideredasareflectingplane.Inthiscasethereflectingplanewillbetheturbinesetfoundationfloor.Inthecaseofthecontinuousenvelopingmeasurementsurfacebeingboundedbyeithertheturbineoperatingfloorortheturbinefoundationfloor,alargecontributionfromthenoiseofancillaryandauxiliaryplantiocatedbelowtheturbineoperatingfloormaybeexpectedatthemicrophonemeasuringpositions.Inthiscasetheuseofthisstandardforthedeterminationofsoundpowerlevelsisnotvalid.Ifthisstandardistobeemployedforthepurposeofthecomparisonofthe1msoundlevelsofsimilarturbines,theturbineoperatingfloorshallbeusedastheboundingsurfaceforthecontinuousenvelopingmeasurementsurface.Thevalidityofcomparativemeasure-mentswilldependonthenoisepresentatthemeasurementpositionsduetoauxiliaryandancillaryplantanditwillbenecessarytodefineexactlythenumber,typeandlocationoftheseitems.ItispreferabletoestablishtheeffectauxiliaryandancillaryplantnoiseradiationwillhaveonthesoundlevelatthemicrophonelocationsbydeterminingthenoiseemissionoftheseitemsinaccordancewithISO3746,anddeterminingthepropagationofthisnoisetomicro-phonelocations.However,thisprocedureisbeyondthescopeofthisstandard.NOTE-Whenopeningsintheflooraresuitablyblockedduringthetestwithappropriatepanels(uppersideofpanelsshouldhavesamereflectivecharacteristicsastheturbineoperatingfloor),validmeasure-mentsarepermitted.1.4Inthecaseofturbinesetsmountedon,orpartiallysubmergedin,thefoundationfloor,whichmayalsobedefinedastheturbineoperatingfloor,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.5Wherenoisecontroltreatmentssuchasenclosuresand/orscreensarefittedtotheturbineset,drivenequipmentandauxiliaries,thetype,locationandextentoftreatmentshallbereported.2MeasurementuncertaintyMeasurementsmadeinconformitywiththisstandardtendtoresultinstandarddeviationswhichareequaltoorlessthanthosegivenintable1.NOTES1Ifthemethodspecifiedinthisstandardisusedtocomparethesoundpowerlevelsofsimilarmachinesthatareomnidirectionalandradiatebroadbandnoise,theuncertaintyinthiscomparisontendstoresultinastandarddeviationwhichisequaltoorlessthan3dBprovidedthatthemeasurementsareperf
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;27_040
【页数】:26P;A4
【正文语种】:英语
基本信息
标准名称: | 土壤中铀的测定 CL-5209萃淋树脂分离2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚分光光度法 |
英文名称: | Determination of uranium in soil; CL 5209 extractant-containing resin separation 2-(5-bromo-2-pyridylazo) -5-diethylaminophenol spectrophotometry |
中标分类: | 环境保护 >> 环境保护采样、分析测试方法 >> 放射性物质与放射强度分析测试方法 |
ICS分类: | 环保、保健与安全 >> 土质、土壤学 |
发布部门: | 国家环境保护总局 |
发布日期: | 1989-03-16 |
实施日期: | 1990-01-01 |
首发日期: | 1989-03-31 |
作废日期: | 1900-01-01 |
主管部门: | 国家环境保护总局 |
归口单位: | 国家环境保护总局 |
起草单位: | 核工业部北京第五研究所 |
出版日期: | 1900-01-01 |
页数: | 3页 |
适用范围
本标准规定了土壤中铀的测定原理、适用范围,使用的试剂和仪器,分析步骤、分析结果的计算和方法的精密度。
本标准适用于土壤中铀含量的测定,测定范围:0.5~15mg.
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 环境保护 环境保护采样 分析测试方法 放射性物质与放射强度分析测试方法 环保 保健与安全 土质 土壤学