GB 5967-1986 电子设备用固定电容器 第八部分:空白详细规范:1类瓷介固定电容器评定水平E(可供认证用)
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时间:2024-05-12 17:44:50
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基本信息
标准名称: | 电子设备用固定电容器 第八部分:空白详细规范:1类瓷介固定电容器评定水平E(可供认证用) |
中标分类: |
电子元器件与信息技术 >>
电子元件 >>
电容器 |
替代情况: | 被GB/T 596796代替 |
发布日期: | 1900-01-01 |
实施日期: | 1986-12-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 8页 |
适用范围
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前言
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引用标准
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所属分类: 电子元器件与信息技术 电子元件 电容器
【英文标准名称】:StandardGuideforAssessingtheHazardofaMaterialtoAquaticOrganismsandTheirUses
【原文标准名称】:评定材料对水生生物及其使用中存在的危险性的标准指南
【标准号】:ASTME1023-1984(2007)
【标准状态】:现行
【国别】:
【发布日期】:1984
【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】:E47.04
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:危险物质;试验;污染控制
【英文主题词】:biological;chemical;environment;toxicological;measuring;estimate;hazard
【摘要】:Adverseeffectsonnaturalpopulationsofaquaticorganismsandtheiruseshavedemonstratedtheneedtoassessthehazardsofmanynew,andsomepresentlyused,materials.Theprocessdescribedhereinwillhelpproducers,users,regulatoryagencies,andotherstoefficientlyandadequatelycomparealternativematerials,completelyassessafinalcandidatematerial,orreassessthehazardofamaterialalreadyinuse.Sequentialassessmentandfeedbackallowappropriatejudgmentsconcerningefficientuseofresources,therebyminimizingunnecessarytestingandfocusingeffortontheinformationmostpertinenttoeachmaterial.Fordifferentmaterialsandsituations,assessmentofhazardwillappropriatelybebasedonsubstantiallydifferentamountsandkindsofbiological,chemical,physical,andtoxicologicaldata.Assessmentofthehazardofamaterialtoaquaticorganismsandtheirusesshouldneverbeconsideredcompleteforalltime.Reassessmentshouldbeconsiderediftheamountofproduction,use,ordisposalincreases,newusesarediscovered,ornewinformationonbiological,chemical,physical,ortoxicologicalpropertiesbecomesavailable.Periodicreviewwillhelpassurethatnewcircumstancesandinformationreceivepromptappropriateattention.Ifthereissubstantialtransformationtoanothermaterial,thehazardofbothmaterialsmayneedtobeassessed.Inmanycases,considerationofadverseeffectsshouldnotendwithcompletionofthehazardassessment.Additionalstepsshouldoftenincluderiskassessment,decisionsconcerningacceptabilityofidentifiedhazardsandrisks,andmitigativeactions.Becausethispracticedealsmostlywithadverseeffectsonaquaticorganismsandtheiruses,itisimportantthatmitigativeactions,suchasimprovedtreatmentofaqueouseffluents,notresultinunacceptableeffectsonnon-aquaticorganisms.Thus,thisstandardshouldbeusedwithotherinformationinordertoassesshazardtobothaquaticandnon-aquaticorganisms.1.1Thisguidedescribesastepwiseprocessforusinginformationconcerningthebiological,chemical,physical,andtoxicologicalpropertiesofamaterialtoidentifyadverseeffectslikelytooccurtoaquaticorganismsandtheirusesasaresultofreleaseofthematerialtotheenvironment.Thematerialwillusuallybeaspecificchemical,althoughitmightbeagroupofchemicalsthathaveverysimilarbiological,chemical,physical,andtoxicologicalpropertiesandareusuallyproduced,used,anddiscardedtogether.1.2Thehazardassessmentprocessiscomplexandrequiresdecisionsatanumberofpoints;thus,thevalidityofahazardassessmentdependsonthesoundnessofthosedecisions,aswellastheaccuracyoftheinformationused.Alldecisionsshouldbebasedonreasonableworst-caseanalysessothatanappropriateassessmentcanbecompletedfortheleastcostthatisconsistentwithscientificvalidity.1.3Thisguideassumesthatthereaderisknowledgeableinaquatictoxicologyandrelatedpertinentareas.Alistofgeneralreferencesisprovided().1.4Thisguidedoesnotdescribeorreferencedetailedproceduresforestimatingormeasuringenvironmentalconcentrations,orproceduresfordeterminingthemaximumconcentrationoftestmaterialthatisacceptableinthefoodofpredatorsofaquaticlife.However,thisguidedoesdescribehowsuchinformationshouldbeusedwhenassessingthehazardofamaterialtoaquaticorganismsandtheiruses.1.5Becauseassessmentofhazardtoaquaticorganismsandtheirusesisarelativelynewactivitywithinaquatictoxicology,mostoftheguidanceprovidedhereinisqualitativeratherthanquantitative.Whenpossible,confidencelimitsshouldbecalculatedandtakenintoaccount.1.6Thisguideprovidesguidanceforassess......
【中国标准分类号】:Z04
【国际标准分类号】:07_100_20
【页数】:17P.;A4
【正文语种】:
【英文标准名称】:StandardSpecificationforReinforcedConcreteEllipticalCulvert,StormDrain,andSewerPipe
【原文标准名称】:钢筋混凝土椭圆形涵管、暴雨排水管和污水管用标准规范
【标准号】:ASTMC507-2007
【标准状态】:作废
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:管弯头;混凝土;建筑;施工材料;涵洞;椭圆形;管;增强的;污水管;暴雨排水管
【英文主题词】:Bends;Concretes;Construction;Constructionmaterials;Culverts;Ellipticalshape;Pipes;Reinforced;Sewerpipes;Stormsewers
【摘要】:
【中国标准分类号】:Q81
【国际标准分类号】:23_040_50
【页数】:9P;A4
【正文语种】:英语