PAULO SERGIO BRASKO FERREIRA
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Artigo IPEN-doc 03938 Validacao dos metodos de calculo computacionais a partir das medidas de distribuicao de fluxo de neutrons e reatividade do reator IEA-R1 com o novo elemento combustivel 1301990 - BITELLI, U.D.; FERREIRA, P.S.B.; KOSAKA, N.; COELHO, P.R.P.Artigo IPEN-doc 04156 Medidas dos parametros integrais em fisica de reatores nucleares usando reator tipo piscina de 2MW1991 - ALVES, M.A.P.; BITELLI, U.D.; SILVA, A.A.; FERREIRA, P.S.B.; COELHO, P.R.P.Artigo IPEN-doc 01698 Medidas e calculos de reatividade no reator IEA-R11988 - FERREIRA, P.S.B.; MAIORINO, J.R.; YAMAGUCHI, M.Artigo IPEN-doc 03305 Medidas de reativividade no reator IEA-R11988 - FERREIRA, P.S.B.; MOREIRA, J.M.L.Artigo IPEN-doc 01569 Estudos neutronicos visando a reducao de enriquecimento do reator de pesquisa IEAR11987 - MAIORINO, J.R.; FANARO, L.C.B.; MAI, L.A.; FERREIRA, P.S.B.; GARONE, J.G.M.Dissertação IPEN-doc 03531 Medida e calculo de parametros de reatividade no reator IEA-R11988 - FERREIRA, PAULO S.B.Artigo IPEN-doc 11056 Monitoring an experimental reactor using the group method of data handling approach2005 - GONCALVES, I.M.; TING, D.K.S.; FERREIRA, P.B.; UPADHYAYA, B.R.This paper presents a reactor-monitoring algorithm using the group method of data handling (GMDH) that creates nonlinear algebraic models for system characterization. The monitoring system was applied to the IEA-R1 experimental reactor at the Instituto de Pesquisas Energéticas e Nucleares (IPEN). The IEA-R1 is a 5-MW pool-type research reactor that uses light water as coolant and moderator and graphite as reflector. The GMDH provides a general framework for characterizing the relationships among a set of state variables of a process system and is used for generating estimates of critical variables in an optimal data-driven model form. The monitoring system developed in this work was used to predict the IEA-R1 reactor environment, using nuclear power, rod position, and coolant temperatures, by combining two variables at a time. The results obtained using the GMDH models agreed very well with the dose rate measurements, with prediction errors of less than 5%. The error was minimal when the dose rate prediction was made using reactor power and coolant temperature.