DAVILSON GOMES DA SILVA
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Artigo IPEN-doc 24188 Study and project of the new rack with boron for storage of fuel elements burned in the IEA-R1 research reactor2017 - RODRIGUES, ANTONIO C.I.; MADI FILHO, TUFIC; SILVA, DAVILSON G. daThe IEA-R1 research reactor works 40h weekly with 4.5 Mw power. The storage rack for spent fuel elements has less than half of its initial capacity. Under these conditions (current conditions of reactor operation 32h weekly will have 3 spend fuel by year, then, approximately 3 utilization rate Positions/year). Thus, we will have only about six years of capacity for storage. Whereas the desired service life of the IEA-R1 is at least another 20 years, it will be necessary to increase the storage capacity of spent fuel. Hence, it is necessary to double the wet storage capacity (storage in the IEA-R1 reactor's pool). After reviewing the literature about materials available for use in the construction of the new storage rack with absorber of neutrons, the BoralcanTM (manufactured by 3TMhis) wwaosr kc hporseesne,n dtsu es ttuod iitess :p r(oap) efrotrie tsh. e construction of new storages racks with double of the current capacity using the same place of current storages racks and (b) criticality analysis using the MCNP-5 code. Two American Nuclear Data Library were used: ENDF / B-VI and ENDF / B-VII, and the results obtained for each data bases were compared. These analyzes confirm the possibility of doubling the storage capacity of fuel elements burned in the same place occupied by the current storage rack attending to the IEA-R1 reactor needs and attending the safety requirements according to the National Nuclear Energy Commission - CNEN and the International Atomic Energy Agency (IAEA). To calculate the keff were considered new fuel elements (maximum possible reactivity) used in full charge of the storage rack. With the results obtained in the simulation we can conclude that doubling the amount of racks for spent fuel elements are complied with safety limits established in the IAEA standards and CNEN of criticality (keff < 0.95).Artigo IPEN-doc 21029 How the nuclear safety team conducts emergency exercises at the IEA-R1 reactor2015 - VAZ, ANTONIO C.A.; SILVA, DAVILSON G.; TOYODA, EDUARDO Y.; SANTIA, PAULO S.; CONTI, THADEU N.; SEMMLER, RENATO; CARVALHO, RICARDO N.Artigo IPEN-doc 08454 Distribuicao de vazao no nucleo do reator de pesquisas IEA-R12001 - TORRES, W.M.; UMBEHAUN, P.E.; BAPTISTA FILHO, B.D.; ALMEIDA, J.C.; SOUZA, J.A.B.; SILVA, D.G.Artigo IPEN-doc 17794 Methodology for GAP measurement in the fuel element fabricated at IPEN2012 - DURAZZO, M.; SILVA, D.G. da; SANTOS, L.R.; URANO de CARVALHO, E.F.; RIELLA, H.G.Artigo IPEN-doc 17595 Metallic uranium production for irradiation target alloys2011 - SALIBA SILVA, A.M.; MARTINS, I.C.; SANTOS, L.R. dos; SILVA, D.G. da; CARVALHO, E.F.U. de; RIELLA, H.G.; DURAZZO, M.Artigo IPEN-doc 17577 Analysis of SLAG formation during UFsub(4) magnesiothermic reduction2011 - SALIBA SILVA, A.M.; AGUIAR, B.; CARVALHO, E.U.; SILVA, D.G. da; RIELLA, H.G.; DURAZZO, M.