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31	Analise dos mecanismos de degradacao de varetas combustiveis falhadas em reatores PWR CASTANHEIRA, MYRTHES 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:48:49Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:00Z (GMT). No. of bitstreams: 1 09634.pdf: 20502766 bytes, checksum: d7ca137617708ba2e112264b734dcd6e (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP PWR TYPE REACTORS ANGRA-1 REACTOR FUEL RODS FAILURES FUEL ELEMENT FAILURE NONDESTRUCTIVE TESTING CHEMICAL REACTIONS CHEMICAL PHYSICS MATHEMATICAL MODELS D CODES DEFECTS CLADDING HYDRIDATION CORROSION THERMODYNAMIC PROPERTIES
32	Medida de parametros integrais no reator IPEN / MB-01 BITELLI, ULYSSES D. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:45:00Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:08Z (GMT). No. of bitstreams: 1 07181.pdf: 9427675 bytes, checksum: b63bf520f5e52b6456ed23681cc3e0dd (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP IPEN-MB-1 REACTOR REACTOR CORES PARAMETRIC ANALYSIS BUCKLING CONVERSION RATIO FISSION RATIO CAPTURE FISSION MONTE CARLO METHOD FUEL RODS GAMMA SPECTROSCOPY
33	Determinacao experimental de indices espectrais por varredura gama de vareta combustivel no reator IPEN/MB-01 / Experimental determination of spectral indices by scanning of fuel rod in the IPEN/MB-01 reactor FANARO, LEDA C.C.B. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:26:35Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:28Z (GMT). No. of bitstreams: 0 / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP IPEN-MB-1 REACTOR FUEL RODS URANIUM 235 URANIUM DIOXIDE CADMIUM CONFIGURATION CONTROL CRITICALITY UNCERTAINT PRINCIPLE GAMMA SPECTROSCOPY DELAYED NEUTRON FRACTION COMPUTER CODE M CODES T CODES
34	Análise do comportamento sob irradiação do combustível nuclear a altas queimas com os programas computacionais FRAPCON e FRAPTRAN / Analysis of the behavior under irradiation of high burnup nuclear fuels with the computer programs FRAPCON and FRAPTRAN REIS, REGIS 10 November 2014 (has links) Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2014-11-10T11:11:38Z No. of bitstreams: 0 / Made available in DSpace on 2014-11-10T11:11:38Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado em Tecnologia Nuclear) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP FUEL ELEMENTS PELLETS BURNUP PWR TYPE REACTORS FUEL RODS COMPUTERIZED SIMULATION F CODES IRRADIATION PROCEDURES ACCURACY REACTIVITY REACTOR ACCIDENTS COMPARATIVE EVALUATIONS
35	Medida do buckling e da probabilidade de fuga de nêutrons do núcleo do reator IPEN/MB-01 / Determination of buckling and probability of leakage of neutron in the IPEN/MB-01 reactor in cylindrical configuration PURGATO, RAFAEL T. 19 January 2015 (has links) Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-01-19T10:26:11Z No. of bitstreams: 0 / Made available in DSpace on 2015-01-19T10:26:11Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado em Tecnologia Nuclear) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP IPEN-MB-1 REACTOR REACTOR CORES BUCKLING CYLINDRICAL CONFIGURATION EXPERIMENTAL DATA FUEL RODS NEUTRON FLUX GAMMA SPECTROMETRY HIGH PURITY GE DETECTORS CAPTURE NEUTRON REACTIONS
36	Comportamento termoidraulico de vareta aquecida eletricamente durante transitorio de fluxo critico de calor LIMA, RITA de C.F. de 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:42:40Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:16Z (GMT). No. of bitstreams: 1 05031.pdf: 4962096 bytes, checksum: 39c12c06c0063abb20c1c82005ecef33 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP boilers boiling detection boiling critical heat flux dryout fuel pellets fuel rods heat transfer hot spots nuclear engineering reactor safety reactor technology reactors rewetting
37	Determinação do fator de pico de potência utilizando barras de controle, detectores ex-core e redes neurais SOUZA, ROSE M.G. do P. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:50:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:58:44Z (GMT). No. of bitstreams: 1 10895.pdf: 9491478 bytes, checksum: a17089904688d31b0c3d8e9056a263b2 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP reactor protection systems power distribution control elements fuel rods peak load reactor cores radiation detectors neural networks c codes ipen-mb-1 reactor
38	Analise dos mecanismos de degradacao de varetas combustiveis falhadas em reatores PWR CASTANHEIRA, MYRTHES 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:48:49Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:00Z (GMT). No. of bitstreams: 1 09634.pdf: 20502766 bytes, checksum: d7ca137617708ba2e112264b734dcd6e (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP pwr type reactors angra-1 reactor fuel rods failures fuel element failure nondestructive testing chemical reactions chemical physics mathematical models d codes defects cladding hydridation corrosion thermodynamic properties
39	Medida de parametros integrais no reator IPEN / MB-01 BITELLI, ULYSSES D. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:45:00Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:08Z (GMT). No. of bitstreams: 1 07181.pdf: 9427675 bytes, checksum: b63bf520f5e52b6456ed23681cc3e0dd (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP ipen-mb-1 reactor reactor cores parametric analysis buckling conversion ratio fission ratio capture fission monte carlo method fuel rods gamma spectroscopy
40	Determinacao experimental de indices espectrais por varredura gama de vareta combustivel no reator IPEN/MB-01 / Experimental determination of spectral indices by scanning of fuel rod in the IPEN/MB-01 reactor FANARO, LEDA C.C.B. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:26:35Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:28Z (GMT). No. of bitstreams: 0 / Neste trabalho foram determinados experimentalmente os índices espectrais 28r* e 25d* e o fator de eficiência de contagem gama através da técnica de varredura gama de varetas combustíveis no reator nuclear IPEN/MB-01. A vantagem deste método experimental consiste no fato de terem sido eliminados a maioria dos fatores de correção advindos dos cálculos, permanecendo somente os fatores de rendimento médio de fissão e a fração de fissão no 235U na determinação do 25d*. Os experimentos foram efetuados com luvas de cádmio de diferentes espessuras: 0,55 mm, 1,10 mm e 2,20 mm. As incertezas experimentais inferiores a 1% e a excelente caracterização dos dados geométricos e materiais do reator IPEN/MB-01 permitem utilizar os resultados obtidos como benchmark para a validação de bibliotecas de dados nucleares. Sendo assim, foi utilizado o programa MCNP-5 com as bibliotecas de dados nucleares: ENDF/B-VI.8, ENDF/B-VII.0, JENDL-3.3 e JEFF-3.1. A comparação entre os valores advindos dos cálculos e os resultados experimentais mostrou que houve progressos sensíveis com as bibliotecas de dados nucleares atuais. Os desvios entre a comparação dos valores calculados e os resultados experimentais são inferiores a 2 %, sendo que o melhor desempenho foi obtido com a biblioteca de dados nucleares ENDF/B-VII.0 e a incerteza máxima na comparação dos resultados foi de -1,4 %, para as bibliotecas de dados nucleares JEFF-3.1 e JENDL-3.3. / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP ipen-mb-1 reactor fuel rods uranium 235 uranium dioxide cadmium configuration control criticality uncertaint principle gamma spectroscopy delayed neutron fraction computer codes m codes t codes

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