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Nuclear criticality safety and time reactivity enhancement aspects of energy amplifier system devices

Abstract

As far as the Rubbia`s and colleagues proposal of innovating Energy Amplifier system (E.A.s.) device driven by a particle beam accelerator is concerned, four basic topics are comprised in the present paper: (1) A short outline of the nuclear aspects of Th-U and U-Pu fuel cycles regarding their general breeding and efficiency features. (2) The needed nuclear criticality control requirements have been studied in terms of safety regulating parameters on the basis of the ThO2 mixed oxides selected as fuel kind for the E.A.s. device technology development. Particular attention is devoted to time evolution of neutron multiplication factor since delayed development of the 233U buildup and so system reactivity are expected in the Th-U cycle. (3) Code E.A.s. device irradiation and post-irradiation modelling for determining higher actinides buildup, fission products formation and fuel consumption trends as function of time, system enrichment degree and flux level parameters. (4) The confirmation, on the basis of the same specific power irradiation, of expected actinides waste obtainment cleaner than the one deriving from the U-Pu cycle utilization. For this end, a model comparison of equivalent enriched fissile nuclides in both cycles has been devised as having, within the range of 0-700 days, ten irradiation  More>>
Authors:
Siciliano, F [1] 
  1. ENEA, Centro Ricerche Trisaia, Rotondelle, Matera (Italy). Direzione INFO
Publication Date:
Dec 01, 1995
Product Type:
Technical Report
Report Number:
ENEA-RT-GEN-95-01; RT/GEN-95-01
Reference Number:
SCA: 700410; PA: ITA-96:000262; EDB-96:174942; NTS-97:003724; SN: 96001695013
Resource Relation:
Other Information: PBD: Dec 1995
Subject:
70 PLASMA PHYSICS AND FUSION; NUCLEAR FUEL CONVERSION; PARTICLE BEAM FUSION ACCELERATOR; BREEDING; ACTINIDE BURNER REACTORS; SAFETY; FUEL CYCLE; ACCELERATORS; BEAM DYNAMICS; BUILDUP; THORIUM CYCLE; THORIUM; ACTINIDES; THORIUM OXIDES; URANIUM 233; NEUTRONS; RADIOACTIVE WASTES; IRRADIATION
OSTI ID:
399346
Research Organizations:
ENEA, Rotondella (Italy). Centro Ricerche Energia Trisaia - Area Energia e Innovazione
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0393-3016; Other: ON: DE97713451; TRN: IT9600262
Availability:
OSTI as DE97713451
Submitting Site:
ITA
Size:
73 p.
Announcement Date:

Citation Formats

Siciliano, F. Nuclear criticality safety and time reactivity enhancement aspects of energy amplifier system devices. Italy: N. p., 1995. Web.
Siciliano, F. Nuclear criticality safety and time reactivity enhancement aspects of energy amplifier system devices. Italy.
Siciliano, F. 1995. "Nuclear criticality safety and time reactivity enhancement aspects of energy amplifier system devices." Italy.
@misc{etde_399346,
title = {Nuclear criticality safety and time reactivity enhancement aspects of energy amplifier system devices}
author = {Siciliano, F}
abstractNote = {As far as the Rubbia`s and colleagues proposal of innovating Energy Amplifier system (E.A.s.) device driven by a particle beam accelerator is concerned, four basic topics are comprised in the present paper: (1) A short outline of the nuclear aspects of Th-U and U-Pu fuel cycles regarding their general breeding and efficiency features. (2) The needed nuclear criticality control requirements have been studied in terms of safety regulating parameters on the basis of the ThO2 mixed oxides selected as fuel kind for the E.A.s. device technology development. Particular attention is devoted to time evolution of neutron multiplication factor since delayed development of the 233U buildup and so system reactivity are expected in the Th-U cycle. (3) Code E.A.s. device irradiation and post-irradiation modelling for determining higher actinides buildup, fission products formation and fuel consumption trends as function of time, system enrichment degree and flux level parameters. (4) The confirmation, on the basis of the same specific power irradiation, of expected actinides waste obtainment cleaner than the one deriving from the U-Pu cycle utilization. For this end, a model comparison of equivalent enriched fissile nuclides in both cycles has been devised as having, within the range of 0-700 days, ten irradiation periods of about 53 MW/ton specific power and equivalent cooling time post-irradiation periods.}
place = {Italy}
year = {1995}
month = {Dec}
}