GB 6394-1986 金属
时间:2024-05-16 15:35:02 来源: 标准资料网 作者：标准资料网 阅读：9455
基本信息
| 标准名称： | 金属 |
| 中标分类： |
冶金 >>
金属理化性能试验方法 >>
金属工艺性能试验方法 |
| 替代情况： | 被GB/T 6394-2002代替 调整为YB/T 5148-1993 |
| 发布日期： | 2000-01-01 |
| 实施日期： | 2000-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 22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： 冶金 金属理化性能试验方法 金属工艺性能试验方法
【英文标准名称】:Harmonizedsystemofqualityassessmentforelectroniccomponents.Blankdetailspecification.Case-ratedthyristors.
【原文标准名称】:电子元器件质量评估协调体系.空白详细规范.特定外壳温度闸流晶体管
【标准号】:NFC86-811-1983
【标准状态】:现行
【国别】:法国
【发布日期】:1983-07-01
【实施或试行日期】:1983-07-21
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:质量管理;详细规范;耐久试验;半导体闸流管;电性质和电现象;作标记;电子设备及元件;电气试验;机械试验;鉴定试验;宏观检查;电性能;电子元部件;电气耐久试验;环境试验;宏观分析;合格试验
【英文主题词】:
【摘要】:
【中国标准分类号】:L43
【国际标准分类号】:31_080_20
【页数】:11P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforDosimetryinGammaIrradiationFacilitiesforFoodProcessing
【原文标准名称】:食品加工用Υ辐照设备的剂量测定的标准实施规程
【标准号】:ASTMISO/ASTM51204-2004
【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;cobalt-60;cesium-137;dosemapping;dosimeter;dosimetry;foodirradiation;foodprocessing;gamma;installationqualification;ionizingradiation;irradiatedfood;irradiation;operationalqualification;performancequalification;radiati
【摘要】:4.1Foodproductsmaybetreatedwithionizingradiation,suchasgamma-raysfrom60Coor137Cssources,fornumerouspurposes,includingcontrolofparasitesandpathogenicmicroorganisms,insectdisinfestation,growthandmaturationinhibition,andshelf-lifeextension.Foodirradiationspecificationsalmostalwaysincludeaminimumormaximumlimitofabsorbeddose,sometimesboth:aminimumlimitissettoensurethattheintendedbeneficialeffectisachievedandamaximumlimitissetforthepurposeofavoidingproductorpackagingdegradation.Foragivenapplication,oneorbothofthesevaluesmaybeprescribedbygovernmentregulationsthathavebeenestablishedonthebasisofscientificdata.Therefore,priortotheirradiationofthefoodproduct,itisnecessarytodeterminethecapabilityofanirradiationfacilitytodelivertheabsorbeddosewithinanyprescribedlimits.Also,itisnecessarytomonitoranddocumenttheabsorbeddoseduringeachproductionruntoverifycompliancewiththeprocessspecificationsatapredeterminedlevelofconfidence.NOTE3-TheCodexAlimentariusCommissionhasdevelopedaninternationalGeneralStandardandaCodeofPracticethataddresstheapplicationofionizingradiationtothetreatmentoffoodsandthatstronglyemphasizetheroleofdosimetryforensuringthatirradiationwillbeproperlyperformed(1).4.2Somefoodproductsareprocessedinthechilledorfrozenstate.Therefore,dosimetersusedforroutineprocessingshouldbeselectedfortheirfunctionalityunderthoseconditions.Moreover,thetemperatureofadosimeterduringirradiationshouldbesufficientlystabletoallowcorrectionfortemperatureeffectsonthedosimeterresponse.Toavoidtheinfluenceoftemperaturegradientsondosimeterresponseandthesubsequentneedtocorrectfortheseeffects,methodsthatisolatethedosimeterfromtemperaturegradientsmaybeemployed.NOTE4-Formoredetaileddiscussionsofradiationprocessingofvariousfoods,seeASTMGuidesF1355,F1356,F1736,andF1885andRefs(1-11).4.3Toensurethatproductsareirradiatedwithinaspecifiedabsorbed-doserange,routineprocesscontrolrequiresroutineproductdosimetry,documentedproducthandlingprocedures(before,during,andafterirradiation),consistentorientationoftheproductsduringirradiation,monitoringofcriticalprocessparameters,anddocumentationofallrelevantactivitiesandfunctions.1.1Thispracticeoutlinestheinstallationqualificationprogramforanirradiatorandthedosimetricprocedurestobefollowedduringoperationalqualification,performancequalification,androutineprocessinginfacilitiesthatprocessfoodwithionizingradiationfromradionuclidegammasourcestoensurethatproducthasbeentreatedwithinapredeterminedrangeofabsorbeddose.Otherproceduresrelatedtooperationalqualification,performancequalification,androutineprocessingthatmayinfluenceabsorbeddoseintheproductarealsodiscussed.Informationabouteffectiveorregulatorydoselimitsforfoodproductsisnotwithinthescopeofthispractice(seeASTMGuidesF1355,F1356,F1736,andF1885).Note18212;Dosimetryisonlyonecomponentofatotalqualityassuranceprogramforadherencetogoodmanufacturingpracticesusedintheproductionofsafeandwholesomefood.Note28212;ISO/ASTMPractice51431describesdosimetricproceduresforelectronbeamandX-ray(bremsstrahlung)irradiationfacilitiesforfoodprocessing.1.2Forguidanceintheselectionandcalibrationofdosimetrysystems,andinterpretationofmeasuredabsorbeddoseintheproduct,seeISO/ASTMGuide51261andASTMPracticeE666.Fortheuseofspecificdosimetrysystems,seeASTMPracticesE1026andE2304,andISO/ASTMPractices51205,51275,51276,51310,51401,51538,51540,51607,51650,and51956.Fordiscussionofr......
【中国标准分类号】:
【国际标准分类号】:67_020
【页数】:10P.;A4
【正文语种】:英语