Published 1983
| Version v1
Report
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Project of a binary breeder reactor and its inherent safety
Description
A core layout for the binary breeder reactor (BBR) is developed based on the results of preliminary burnup calculations. In the U233/TH fueled inner core, the apparent breeding ratio is low due to the accumulation of Pa-233 in the first few months of operation. The loss of reactivity during this time is approximatelly 3%. The BBR requires more reactivity control than Pu/U-fueled LMFBRs and the core layout developed has 19 control rod assemblies in the inner core. Three aspects related to the inherent safety of the BBR have been studied: radial distribution of the sodium-void reactivity, zone-wise Doppler reactivity, and the delayed neutron fractions. Results show excellent safety characteristics of the BBR. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Um arranjo de nucleo para o reator regenerador binario (RRB) e desenvolvido baseado em resultados de calculos preliminares de queima. A razao de regeneracao aparente, no nucleo interno, carregado com U-233/TH, e baixa devido ao acumulo de Pa-233 nos primeiros meses de operacao. A perda de reatividade durante este tempo e de approximadamente 3%. O RRB requer mais controle de reatividade do que os LMFBRs carregados com Pu/U, e portando o arranjo do nucleo desenvolvido tem 19 feixes de barras para controle no nucleo interno. Tres aspectos relacionados as caracteristicas de seguranca inerente do RRB foram estudados: a distribuicao radial da reatividade devido a vazios no Sodio, a reatividade devido ao efeito Doppler por zona, e as fracoes de neutrons atrasados. Os resultados mostram excelentes caracteristicas de seguranca do RRB. (Autor)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Projeto do reator regenerador binario e seguranca inerente
Publishing Information
- Imprint Pagination
- 12 p.
- Report number
- CTA-IEAV-NT--024/83
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 16027412
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- BREEDER REACTORS; BREEDING RATIO; BURNUP; DOPPLER COEFFICIENT; REACTIVITY; REACTOR SAFETY; SAFETY ANALYSIS; SPECIFICATIONS; THORIUM; URANIUM 233
- Descriptors DEC
- ACTINIDE NUCLEI; ACTINIDES; ALPHA DECAY RADIOISOTOPES; CONVERSION RATIO; ELEMENTS; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISOTOPES; METALS; NUCLEI; RADIOISOTOPES; REACTIVITY COEFFICIENTS; REACTORS; SAFETY; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES