福岛核电站泄露过程揭秘

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1、TheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.1TheFukushimaDaiichiIncidentPlantDesignAccidentProgressionRadiologicalreleasesSpentfuelpoolsSourcesofInformationMatthiasBraunPEPA4-G,AREVA–NPGmbHMatthias.Braun@AREVA.comTheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.2

2、TheFukushimaDaiichiIncident1.PlantDesignFukushimaDaiichi(PlantI)UnitI-GEMarkIBWR(439 MW),Operatingsince1971UnitII-IV-GEMarkIBWR(760 MW),Operatingsince1974TheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.3TheFukushimaDaiichiIncident1.PlantDesignnucleartourist.comen.wi

3、kipedia.org/wiki/Browns_Ferry_Nuclear_Power_PlantBuildingstructureConcreteBuildingSteel-framedServiceFloorContainmentPear-shapedDry-WellTorus-shapedWet-WellTheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.4TheFukushimaDaiichiIncident1.PlantDesignServiceFloorTheFukush

4、imaDaiichiIncident–Dr.MatthiasBraun--p.5TheFukushimaDaiichiIncident1.PlantDesignLiftingtheContainmentclosureheadTheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.6TheFukushimaDaiichiIncident1.PlantDesignReactorServiceFloor(SteelConstruction)ConcreteReactorBuilding(

5、secondaryContainment)ReactorCoreReactorPressureVesselContainment(Drywell)Containment(WetWell)/CondensationChamberSpendFuelPoolFreshSteamlineMainFeedwaterTheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.7TheFukushimaDaiichiIncident2.Accidentprogression11.3.201114:46-E

6、arthquakeMagnitude9PowergridinnorthernJapanfailsReactorsitselfaremainlyundamagedSCRAMPowergenerationduetoFissionofUraniumstopsHeatgenerationduetoradioactiveDecayofFissionProductsAfterScram~6%After1Day~1%After5Days~0.5%TheFukushimaDaiichiIncident–Dr.MatthiasBraun--p

7、.8TheFukushimaDaiichiIncident2.AccidentprogressionContainmentIsolationClosingofallnon-safetyrelatedPenetrationsofthecontainmentCutsoffMachinehallIfcontainmentisolationsucceeds,alargeearlyreleaseoffissionproductsishighlyunlikelyDieselgeneratorsstartEmergencyCorecooli

8、ngsystemsaresuppliedPlantisinastablesavestateTheFukushimaDaiichiIncident–Dr.MatthiasBraun--p.9TheFukushimaDaiichiIncident2.Accidentprogres