Search results for "Pebble"

showing 10 items of 42 documents

Tritium distribution and chemical forms in the irradiated beryllium pebbles before and after thermoannealing

2011

Abstract Beryllium pebbles are foreseen as a neutron multiplier in the tritium breeding blanket of the future fusion devices. Tritium inventory in the beryllium as a result of neutron-induced transmutations is a significant safety and technological issue for the operation of the breeding blanket. In this study, beryllium pebbles from 3 different irradiation experiments: BERYLLIUM, EXOTIC 8/3-13 and PBA, performed at High Flux Reactor HFR have been investigated. The distribution of tritium in the bulk of the pebbles and the abundance ratios of chemical forms of tritium T 0 , T + and T 2 have been analysed before and after the different thermo-annealing experiments. In order to determine the …

Materials scienceScanning electron microscopeMechanical EngineeringRadiochemistrychemistry.chemical_elementThermal treatmentBlanketNuclear physicsNuclear Energy and EngineeringchemistryGeneral Materials ScienceNeutronTritiumIrradiationBerylliumPebbleCivil and Structural EngineeringFusion Engineering and Design
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Experimental tests and thermo-mechanical analyses on the HEXCALIBER mock-up

2008

Abstract Within the framework of the R&D activities promoted by European Fusion Development Agreement on the helium-cooled pebble bed test blanket module to be irradiated in ITER, ENEA Brasimone and the Department of Nuclear Engineering of the University of Palermo performed intense research activities on the modelling of the thermo-mechanical behaviour of both beryllium and lithiated ceramics pebble beds, which are envisaged to be used, respectively, as neutron multiplier and tritium breeder. In particular, at the DIN a thermo mechanical constitutive model was developed for both lithiated ceramics and beryllium pebble beds and it was successfully implemented on a commercial finite element …

Materials scienceStructural materialMechanical EngineeringNuclear engineeringConstitutive equationchemistry.chemical_elementBlanketFinite element methodPebble beds Thermo-mechanical constitutive model HCPB-TBMNuclear Energy and EngineeringchemistryMockupGeneral Materials ScienceNeutronBerylliumPebbleSettore ING-IND/19 - Impianti NucleariCivil and Structural Engineering
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On the theoretical–numerical study of the HEXCALIBER mock-up thermo-mechanical behaviour

2010

Abstract Within the framework of the R&D activities promoted by European Fusion Development Agreement on the Helium-Cooled Pebble Bed Test Blanket Module to be irradiated in ITER, ENEA Brasimone and the Department of Nuclear Engineering of the University of Palermo (DIN) performed intense research activities on the modelling of the thermo-mechanical behaviour of both beryllium and lithiated ceramics pebble beds, that are envisaged to be used, respectively, as neutron multiplier and tritium breeder. In particular, the DIN developed a thermo-mechanical constitutive model for these pebble beds to be validated against the HEXCALIBER mock-up test campaign, carried out at the ENEA HE-FUS3 facilit…

Materials scienceTokamakMechanical EngineeringNuclear engineeringchemistry.chemical_elementBlanketFusion powerFinite element methodlaw.inventionPebble beds Thermo-mechanical constitutive model HCPB-TBMNuclear Energy and EngineeringchemistryMockuplawGeneral Materials ScienceNeutronBerylliumPebbleSettore ING-IND/19 - Impianti NucleariCivil and Structural EngineeringFusion Engineering and Design
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Thermomechanical analyses of the DEMO-HCPB TBM medium scale mock-up to be tested in the HE-FUS3 facility

2000

NUCLEAR FUSION HCPB-TBM PEBBLE BEDS
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On the investigation of Lithium Methatitanate pebble bed thermal diffusive properties by the Improved Current Pulse method

2012

NUCLEAR FUSION PEBBLE BED LITHIUM METHATITANATESettore ING-IND/19 - Impianti Nucleari
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On the assessment of lithium orthosilicate pebble bed thermal diffusive properties by the improved current pulse method

2008

NUCLEAR FUSION PEBBLE BED THERMAL-DIFFUSIVE PROPERTIES CURRENT PULSE METHOD
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Fusion pebble bed thermo-mechanical modelling. Status of the research activity at the DIN

2002

NUCLEAR FUSION PEBBLE BED THERMO-MECHANICS
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A Thermo-Mechanical Constitutive Model of the Lithium Orthosilicate and Beryllium Pebble Beds. An Application on the Thermo-Mechanical Study of the S…

2000

NUCLEAR FUSION PEBBLE BEDS BREEDING BLANKET SMARTS MOCK-UP
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Thermal tests of ceramic breeder pebble beds for the Helium Cooled (HCPB) DEMO blanket

2002

NUCLEAR FUSION PEBBLE BEDS HCPB BLANKET
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HEXCALIBER TEST SECTION. Preliminary thermo-mechanical analysis

2007

NUCLEAR FUSION PEBBLE BEDS HEXCALIBER MOCK-UP
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