Author/Authors :
N.NPonomarev-Stepnoi، نويسنده , , N.EKukharkin، نويسنده , , A.ABobrov، نويسنده , , E.IChuniaev، نويسنده , , V.PGarin، نويسنده , , E.SGlushkov، نويسنده , , G.VKompaniets، نويسنده , , A.MKrutov، نويسنده , , V.ALobyntsev، نويسنده , , D.NPolyakov، نويسنده , , O.NSmirnov، نويسنده , , A.AZimin، نويسنده ,
Abstract :
The“zero”powerASTRAcriticalfacilityattheKurchatovInstituteisintendedforexperimentalinvestigationofneutronicsofHTGRreactors.Sphericalgraphiteelementswithmultilayercoatedfuelparticlesinside,alongwithpuregraphiteandabsorbercontainingsphericalelementscanbeusedindifferentconfigurationsofcores.Reactor-gradegraphiteblocksareusedinthestructuresofbottom,side,top,and/orinternalreflectors.Hardwarecapabilitiesofthefacilityallowcreationofthecriticalassemblieswiththeouterdiameterandheightofthesidereflectorofupto3.8and4.6m,respectively.TheASTRAcriticalfacilitywasusedtosimulatetheHTGRreactorsearlierdesignedinRussia,PBMRreactor(beingdevelopedinRSA)andisgoingtobeusedundertheinternationalGT-MHRproject(France,Japan,Russia,USA)mainlyforthepurposeofobtainingexperimentalbenchmarkdataforcomputercodevalidations.BriefdescriptionoftheASTRAfacilitycharacteristics,investigatedcoreconfigurations,experimentalmethods,andresultsisgiveninthepaper.
