ASTM D7508/D7508M-2010 混凝土中用聚烯径短切纤维束标准规范
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【英文标准名称】:StandardSpecificationforPolyolefinChoppedStrandsforUseinConcrete
【原文标准名称】:混凝土中用聚烯径短切纤维束标准规范
【标准号】:ASTMD7508/D7508M-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D13.58
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:appearance;choppedstrands;concrete;denier;equivalentdiameter;fiber;polyolefin;tension(tensile)properties/tests;thickness;width
【摘要】:1.1Thisspecificationcoverspolyolefinchoppedstrands(fibers)foruseinconcrete.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsdescribedinthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W50
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 腌猪肉 |
| 发布部门： | 中华人民共和国商务部 |
| 发布日期： | 2012-08-01 |
| 实施日期： | 2012-11-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2012-11-01 |
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： 建材 建材综合 卫生 安全 劳动保护 建筑材料和建筑物 建筑材料
【英文标准名称】:StandardPracticeforDosimetryinaGammaIrradiationFacilityforRadiationProcessing
【原文标准名称】:辐射处理用γ射线设备放射量测定用标准实施规程
【标准号】:ASTMISO/ASTM51702-2004
【标准状态】:现行
【国别】:美国
【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】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorbeddose;cesium-137;cobalt-60;dosemapping;dosimeter;dosimetry;gamma;installationqualification;ionizingradiation;irradiation;operationalqualification;performancequalification;radiation;radiationprocessing
【摘要】:4.1Variousproductsandmaterialsmaybetreatedwithionizingradiation,suchasgammaraysfrom60Coor137Cssources,fornumerouspurposes,includingmicrobialreductionandmaterialmodification.Dosimetryrequirementsmayvarydependingupontheirradiationapplicationandtheenduseoftheproduct.4.2Formanyproducts,theirradiationspecificationsincludeaminimumormaximumlimitofabsorbeddose,sometimesboth:aminimumissettoensurethattheintendedbeneficialeffectisachievedandamaximumlimitissetforthepurposeofavoidingproductdegradation.4.2.1Foragivenapplication,oneorbothofthesevaluesmaybeprescribedbyregulationsthathavebeenestablishedonthebasisofavailablescientificdata.Therefore,itisnecessarytodeterminethecapabilityofanirradiationfacilitytodelivertheabsorbeddosewithinprescribedlimitspriortotheirradiationoftheproduct.Also,itisnecessarytomonitoranddocumenttheabsorbeddoseduringeachproductionruntoverifycompliancewiththeprocessspecificationswithinapredeterminedlevelofconfidence.4.2.2Someexamplesofirradiationapplicationswheredosimetryrequirementsaresimilartothoserequiredforfoodirradiationorforradiationsterilizationofhealthcareproductsare:4.2.2.1Disinfectionofconsumerproduct;4.2.2.2Controlofpathogensinliquidsorsolids;and4.2.2.3Researchonmaterialeffects.4.3Forotherproducts,theirradiationspecificationsmaydependontheevaluationofchangesinthephysicalandchemicalpropertiesoftheirradiatedmaterials.4.3.1Fortheseproducts,therequirementsfordosimetrymaybelessstringent,butdosimetrydatamaybeusefulforqualitycontrol,transferoftheprocesstoanotherfacilityorforcomparisonwithdatafromotherfacilities.4.3.2Someexamplesofradiationapplicationswhereallofthedosimetryrequirementsstatedinthispracticemaynotberequiredare:4.3.2.1Cross-linkingordegradationofpolymersandelastomers;4.3.2.2Polymerizationofmonomersandgraftingofmonomersontopolymers;and4.3.2.3Enhancementofcoloringemstonesandothermaterials.4.4Forsomeproducts,therequirementsfordosimetrymaybedifferent.4.4.1Anexampleofaradiationapplicationwithdifferentrequirementsis:4.4.1.1Therequirementtodeterminetheabsorbeddoseinsiliconorothermaterialsdifferentfromwaterinradiationhardnesstestingofsemiconductorsorthemodificationofcharacteristicsofsemiconductordevices.4.5Forsomeradiationapplications,theirradiationsmaybeperformedatloworhightemperatures,causingdifficultiesindosimetry.Fortheseapplications,itmaybenecessarytoperformdosimetryatambientroomtemperaturesandrelyonprocesscontroltoensurethattheabsorbeddoseiswithinthedesiredlimits.Insomecasesitmaybepossibletousedosimetersforroutinemonitoringatthetemperatureusedfortheirradiationapplicationifthedosimetertemperatureduringirradiationissufficientlystabletoallowcorrectionfortemperatureeffectsonthedosimeterresponse.1.1Thispracticeoutlinestheinstallationqualificationprogramforanirradiatorandthedosimetricprocedurestobefollowedduringoperationalqualification,performancequalification,androutineprocessinginfacilitiesthatprocessproductwithionizingradiationfromradionuclidegammasourcestoensurethatproducthasbeentreatedwithinapredeterminedrangeofabsorbeddose.Otherproceduresrelatedtoinstallationqualification,operationalqualification,performancequalification,androutineprocessingthatmayinfluenceabsorbeddoseintheproductarealsodiscussed.Informationabouteffectiveorregulatoryabsorbed-doselimitsisnotwithinthescopeofthispractice.Note18212;Dosimetryisonlyonecompon......
【中国标准分类号】:
【国际标准分类号】:
【页数】:10P.;A4
【正文语种】:英语
