SAE AS3238 Bolt, Machine - Double Hexagon Extended Washer Head, PD Shank, Cres, UNS N07718, 185 ksi min, .3125-24 UNJF-3
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来源:标准资料网
Product Code:SAE AS3238
Title:Bolt, Machine - Double Hexagon Extended Washer Head, PD Shank, Cres, UNS N07718, 185 ksi min, .3125-24 UNJF-3A
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available
上一篇:
SAE AS3239 Bolt, Machine - Double Hexagon Extended Washer Head, PD Shank, Cres, UNS N07718, 185 ksi min, .3750-24 UNJF-3下一篇:
SAE AS3240 Bolt, Machine - Double Hexagon Extended Washer Head, PD Shank, Cres, UNS N07718, 185 ksi min, .4375-20 UNJF-3【英文标准名称】:StandardPracticeforDeterminingNeutronExposuresforNuclearReactorVesselSupportStructures
【原文标准名称】:核反应堆容器支承结构的中子辐照测定的标准实施规程
【标准号】:ASTME1035-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E10.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:neutron;radiation;ferritic;vessel;dosimetric;reactor;pressurized;Dosimetry;Ferriticmaterials;Neutronradiation--nuclearmaterials/applications;Nuclearreactorvessels;Radiationexposure--nuclearmaterials/applications;Structuralanalysis/appl
【摘要】:Predictionofneutronradiationeffectstopressurevesselsteelshaslongbeenapartofthedesignandoperationoflightwaterreactorpowerplants.Boththefederalregulatoryagencies(see2.2)andnationalstandardsgroups(see2.1)havepromulgatedregulationsandstandardstoensuresafeoperationofthesevessels.Thesupportstructuresforpressurizedwaterreactorvesselsmayalsobesubjecttosimilarneutronradiationeffects(1,2,3,4,5).Theobjectiveofthispracticeistoprovideguidelinesfordeterminingtheneutronradiationexposuresexperiencedbyindividualvesselsupports.Itisknownthathighenergyphotonscanalsoproducedisplacementdamageeffectsthatmaybesimilartothoseproducedbyneutrons.Theseeffectsareknowntobemuchlessatthebeltlineofalightwaterreactorpressurevesselthanthoseinducedbyneutrons.Thesamehasnotbeenprovenforalllocationswithinvesselsupportstructures.Therefore,itmaybeprudenttoapplycoupledneutron-photontransportmethodsandphotoninduceddisplacementcrosssectionstodeterminewhethergamma-induceddpaexceedsthescreeninglevelof3.0x00D7;10-4,usedinthispracticeforneutronexposures.See1.2.1.1Thispracticecoversproceduresformonitoringtheneutronradiationexposuresexperiencedbyferriticmaterialsinnuclearreactorvesselsupportstructureslocatedinthevicinityoftheactivecore.Thispracticeincludesguidelinesfor:1.1.1Selectingappropriatedosimetricsensorsetsandtheirproperinstallationinreactorcavities.1.1.2Makingappropriateneutronicscalculationstopredictneutronradiationexposures.1.2Thispracticeisapplicabletoallpressurizedwaterreactorswhosevesselsupportswillexperiencealifetimeneutronfluence(E>1MeV)thatexceeds1x00D7;1017neutrons/cm2or3.0x00D7;10x2212;4dpa.(SeeTerminologyE170.)1.3Exposureofvesselsupportstructuresbygammaradiationisnotincludedinthescopeofthispractice,butseethebriefdiscussionofthisissuein3.2.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F74
【国际标准分类号】:27_120_20
【页数】:3P.;A4
【正文语种】:英语
Product Code:SAE AMS4944
Title:Titanium Alloy Tubing, Seamless, Hydraulic, 3.0Al - 2.5V, Cold Worked, Stress Relieved
Issuing Committee:Ams G Titanium And Refractory Metals Committee
Scope:This specification covers a titanium alloy in the form of seamless tubing.
