SAE AMS7312 Piston Rings, Centrifugally-Cast Iron (NONCURRENT October 2001)

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Product Code:SAE AMS7312
Title:Piston Rings, Centrifugally-Cast Iron (NONCURRENT October 2001)
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:This specification covers a centrifugally-cast, alloyed iron in the form of sleeves for the fabrication of piston rings. Primarily for use as top compression rings, oil scraper rings, and dual oil control rings in aircraft piston engines.
基本信息
标准名称:鲜、冻动物性水产品卫生标准
英文名称:Hygienic standard for fresh and frozen marine products of animal origin
中标分类: 医药、卫生、劳动保护 >> 卫生 >> 食品卫生
ICS分类: 食品技术 >> 食品综合
替代情况:GB 2733-1994 GB 2735-1994 GB 2736-1994 GB/T 2739-1981 GB 2740-1994 GB 2741-1994 GB 2742-1994 GB 2743
发布部门:中华人民共和国卫生部 中国国家标准化管理委员会
发布日期:2005-01-25
实施日期:2005-10-01
首发日期:1981-09-23
作废日期:1900-01-01
主管部门:卫生部
提出单位:中华人民共和国卫生部
归口单位:中华人民共和国卫生部
起草单位:辽宁省食品卫生监督检验所、上海市卫生监督所、大连市卫生防疫站
起草人:王正、刘军伟、张红、陈敏、丁元梅、袁宝君、蔡延平
出版社:中国标准出版社
出版日期:2005-10-01
页数:平装16开, 页数:5, 字数:7千字
计划单号:20031912-Q-361
书号:155066.1-22544
适用范围

本标准规定了鲜、冻动物性水产品的卫生指标和检验方法以及生产过程、包装、标识、贮存与运输的卫生要求。

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所属分类: 医药 卫生 劳动保护 卫生 食品卫生 食品技术 食品综合
【英文标准名称】:StandardPracticeforUseofCalorimetricDosimetrySystemsforElectronBeamDoseMeasurementsandRoutineDosimeterCalibration
【原文标准名称】:电子束剂量计测量和剂量计校准用量热剂量测定法系统使用的标准惯例
【标准号】:ASTMISO/ASTM51631-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:吸收剂量;标准;热量计;热量测定;剂量计;剂量测定;电子加速器;电子束;黑铅;电离辐射;辐射;聚苯乙烯;放射;辐射处理;水;ICS
【英文主题词】:absorbeddose;calibration;calorimeter;calorimetry;dosimeter;dosimetry;electronaccelerator;electronbeam;graphite;ionizingradiation;irradiation;polystyrene;radiation;radiationprocessing;water;ICS
【摘要】:4.1Thispracticeisapplicabletotheuseofacalorimeterforthemeasurementofabsorbeddoseinelectronbeams,thequalificationofelectronirradiationfacilities,periodicchecksofoperatingparametersofelectronirradiationfacilities,andcalibrationofotherdosimetersinelectronbeams.NOTE1-Foradditionalinformationoftheuseofdosimetryinelectronacceleratorfacilities,seeISO/ASTMPractices51431and51649,andICRUReports34and35,andRefs(1-3).44.2Thecalorimetersdescribedinthispracticearenotprimary-standarddosimeters.Theymaybeusedastransferstandarddosimetersorasinternalstandardsatanelectronbeamirradiationfacility,ormayberoutinedosimetersusedforroutinedosemeasurements.Thecalorimetersarecalibratedbycomparisonwithtransfer-standarddosimeters.4.3Thedosemeasurementisbasedonthemeasurementofthetemperatureriseinanabsorber(calorimetricbody)irradiatedbyanelectronbeam.Differentabsorbingmaterialsareused,buttheresponseisusuallydefinedintermsofdosetowater.4.4Theabsorbeddoseinothermaterialsirradiatedunderequivalentconditionsmaybecalculated.ProceduresformakingsuchcalculationsaregiveninASTMPracticesE666andE668,ISO/ASTMGuide51261,andRef(1).4.5Theaverageabsorbeddoseinthevolumeofthecalorimetricbodyismeasured.Dosegradientsmayoccurinthisvolumeandmayhavetobeconsideredwhenestimatingdoseinothermaterials.4.6Thecalorimetricbodiesofthecalorimetersdescribedinthispracticearemadefromlowatomicnumbermaterials.Theelectronfluenceswithinthesecalorimetricbodieswillbeapproximatelyequalwhenirradiatedwithelectronbeamsof1.5MeVorhigher.Calibrationintermsofdosetowaterispossibleforthesecalorimeters.4.6.1Calorimetersforuseatindustrialelectronacceleratorshavebeenconstructedusinggraphite,polystyreneoraPetridishfilledwithwaterasthecalorimetricbody(4-10).Thethicknessofthecalorimetricbodyshallbelessthantherangeoftheelectronsforthespecifiedmaterial.4.6.2Polymericmaterialsotherthanpolystyrenemaybeusedforcalorimetricmeasurements.Polystyreneisusedbecauseitisknowntoberesistanttoradiation(11)andbecausenoexo-orendothermicreactionstakeplace(12).1.1Thispracticecoversthepreparationanduseofsemi-adiabaticcalorimetersformeasurementofabsorbeddoseandroutinedosimetercalibrationwhenirradiatedwithelectronsforradiationprocessingapplications.Thecalorimetersareeithertransportedbyaconveyorpastascannedelectronbeamorarestationaryinabroadenedbeam.1.2Thispracticeappliestoelectronbeamsintheenergyrangefrom1.5to12MeV.1.3Theabsorbeddoserangedependsontheabsorbingmaterialandtheirradiationandmeasurementconditions.Minimumdoseisapproximately100Gyandmaximumdoseisapproximately50kGy.1.4Theaveragedabsorbed-doseraterangeshallgenerallybegreaterthan10Gys1.1.5Thetemperaturerangeforuseofthesecalorimetersdependsonthethermalresistanceofthematerials,onthecalibrationrangeofthetemperaturesensor,andonthesensitivityofthemeasurementdevice.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A58
【国际标准分类号】:17_240
【页数】:9P.;A4
【正文语种】: