EJ/T 565-1991 乏燃料运输容器技术条件
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基本信息
标准名称: | 乏燃料运输容器技术条件 |
中标分类: | 能源、核技术 >> 核反应堆 >> 核反应堆与 核电厂核岛设备 |
ICS分类: | 能源和热传导工程 >> 核能工程 >> 有关核能的其他标 |
发布日期: | 1991-10-11 |
实施日期: | 1992-03-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 22页 |
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所属分类: 能源 核技术 核反应堆 核反应堆与 核电厂核岛设备 能源和热传导工程 核能工程 有关核能的其他标
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基本信息
标准名称: | 氨制冷装置用过冷器 型式与基本参数 |
中标分类: | 机械 >> 通用机械与设备 >> 制冷设备 |
发布日期: | |
实施日期: | 1992-07-01 |
首发日期: | |
作废日期: | 1998-05-13 |
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所属分类: 机械 通用机械与设备 制冷设备
【英文标准名称】:Acoustics-Measurementofairbornenoiseemittedbyinformationtechnologyandtelecommunicationsequipment【原文标准名称】:声学信息技术和远程通讯设备发射的空气噪声的测量
【标准号】:ISO7779-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;空气噪声;定义;试验;信息技术;电信;测定;声学试验;计算机;噪声(环境的);办公室设备
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Airbornenoiseemitted;Airbornesound;Cables;Calibration;Clayfraction;Comparison;Computers;Corrrections;Data;Dataprocessing;Dataprocessingequipment;Definitions;Determination;Envelopingsurfacemethods;Environment;Externalnoise;Filters;Freefields;Frequencies;Handling;Informationtechnology;Inputvoltage;Installations;Instruments;Layout;Loudnesslevels;Machinenoise;Machines;Measurement;Measurementduration;Measuringbanks;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringrooms;Measuringsurfaces;Measuringsystems;Methods;Microphones;Moisture;Noise;Noisecontrol;Noiseemissions;Noise(environmental);Noisemeasurements;Officeequipment;Officemachines;Operatingconditions;Operatingstations;Operation;Operators;PC;Personalcomputers;Precision;Pressure;Printers;Reflection;Reverberationroommethod;Reverberationrooms;Rotation;Sitting;Soundintensity;Soundlevel;Soundpressure;Soundpressurelevel;Soundsources;Tables;Telecommunications;Temperature;Terminals;Testing;Typeofunit;Workingplaces
【摘要】:ThisInternationalStandardspecifiesproceduresformeasuringandreportingthenoiseemissionofinformationtechnologyandtelecommunicationsequipment.Thisstandardisconsideredpartofanoisetestcodeforthistypeofequipment,andisbasedonbasicnoiseemissionstandardsISO3741,ISO3744,ISO3745andISO11201.ThebasicemissionquantityistheA-weightedsoundpowerlevelwhichmaybeusedforcomparingequipmentofthesametypebutfromdifferentmanufacturers,orforcomparingdifferentequipment.ThreebasicnoiseemissionstandardsfordeterminingthesoundpowerlevelsarespecifiedinthisInternationalStandardinordertoavoidunduerestrictiononexistingfacilitiesandexperience.Thefirstbasicstandard(ISO3741)specifiescomparisonmeasurementsinareverberationroom;theothertwo(ISO3744andISO3745)specifymeasurementsinanessentiallyfreefieldoverareflectingplane.AnyoneofthesethreebasicnoiseemissionstandardsmaybeselectedandshallthenbeusedexclusivelyaccordingtothisInternationalStandardwhendeterminingsoundpowerlevelsofamachine.TheA-weightedsoundpowerlevelissupplementedbytheA-weightedsoundpressurelevelmeasuredattheoperatorposition(s)orthebystanderpositions,basedonthebasicnoiseemissionstandardISO11201.Thissoundpressurelevelisnotaworker'simmissionratinglevel,butitmayassistinidentifyinganypotentialproblemsthatcouldcauseannoyance,activityinterference,orhearingdamagetooperatorsandbystanders.MethodsfordeterminingwhetherthenoiseemissionincludesprominentdiscretetonesorisimpulsiveincharacterarespecifiedinannexesDandErespectively.ThisInternationalStandardissuitablefortypetestsandprovidesmethodsformanufacturersandtestinglaboratoriestoobtaincomparableresults.ThemethodsspecifiedinthisInternationalStandardallowthedeterminationofnoiseemissionlevelsforaunittestedindividually.Theproceduresmaybeappliedtoequipmentwhichemitsbroad-bandnoise,narrow-bandnoiseandnoisewhichcontainsdiscrete-frequencycomponents,orimpulsivenoise.Thesoundpowerandsoundpressurelevelsobtainedmayservenoiseemissiondeclarationandcomparisonpurposes(seeISO9296).Theyarenottobeconsideredasinstallationnoiseimmissionlevels;howevertheymaybeusedforinstallationplanning(seeECMATR/27).Ifsoundpowerlevelsobtainedaredeterminedforanumberofunitsofthesameproductionseries,theycanbeusedtodetermineastatisticalvalueforthatproductionseries(ISO9296).
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;35_180;35_260
【页数】:61P;A4
【正文语种】:英语