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I1452 - Imagem de depósito de equipamentos
No full textDimensão: 12x8 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de de depósito de equipamentos do NUMAC, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 3 exemplares
I1460 - Imagem de detetores de proton de recuo
No full textDimensão: 8x12 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de detetores de proton de recuo para medida de espectro de neutrons rápidos, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 5 exemplares
I1462 - Imagem de cuba de aço
No full textDimensão: 12x8 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de cuba de aço para estudo de tempo de resposta de termopares, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 4 exemplares
I1106 - Imagem de Espectrômetro
No full textDimensão: 9x12 cmFoto colorida de espectrômetro mod. 4031, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I1219 - Imagem de palestra
No full textDimensão: 10x15 cmFoto colorida de plateia e participantes de palestra sobre Radioesterilização (CNEN - IEN) no auditório do Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I1454 - Imagem de procedimento
No full textDimensão: 12x8 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de funcionário fazendo a calibração em osciloscópio 585A, na gaiola blindada do NUMAC, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 4 exemplares
I0013 - Fita Betacam
No full textDimensão: 9,5x15,5 cm (fita) / 11x17 cm (caixa)Fita betacam, da marca Sony. Contém vídeo de pré-master IEN. --- Informações retiradas da etiqueta do objeto, a fita não foi assistida
I0086 - Imagem da construção do Ciclotron
No full textDimensão: 8,8x12,6 cmFoto colorida do acabamento da construção do Ciclotron Compacto de Energia Variável, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
Reactivity variation's analysis in nuclear propulsion considering the operational real conditions requirements
Get PDFThe work presented in this paper highlights the need for the study to determine the reactivy variation ramps needed and possible to meet the real operational condicitions required by a nuclear submarine in this several operating fases. In accordance with the operational needs and necessary maneuvers in certain tactical situations, large power variations in the propulsion are demanded. As these sudden and severe changes in propulsion come from the thermal power of nuclear origin, the operation of the nuclear island has to know what kind of answers and criticality variations are necessary to meet each demand speed required. It should be noted that these criticality inserts are conditioned, not only by the propulsion needs, but fundamentally by the imperative need to ensure the core integrity and the chain reaction sustainability considering the phenomenons and complex effects, nonlinear and retro-fed involved. It has to be determined what is the past and required time for each criticality insertion is perceived as motor power. Considering the highlighted aspects, this article concludes and indicates to its end, the need to establish a base operating transitional agenda, according to the naval combat doctrine, to be tested and analyzed under the aspects and peculiarities of kinetic reactors, with the purpose of being generated the appropriate criticality curves for each real need and their respective times of anticipated action
Study of the source-detector system geometry using the MCNP-X code in the flowrate measurement with radioactive tracers
Get PDFThe use radioactive tracers for flow rate measurement is applied to a great variety of situations, however the
accuracy of the technique is highly dependent of the adequate choice of the experimental measurement conditions.To measure flow rate of fluids in ducts partially filled, is necessary to measure the fluid flow velocity
and the fluid height. The flow velocity can be measured with the cross correlation function and the fluid level,
with a fluid level meter system. One of the error factors when measuring flow rate, is on the correct setting
of the source-detector of the fluid level meter system. The goal of the present work is to establish by mean
of MCNP-X code simulations the experimental parameters to measure the fluid level [3]. The experimental
tests will be realized in a flow rate system of 10 mm of diameter of acrylic tube for water and oil as fluids. The radioactive tracer to be used is the 82Br and for the detection will be employed two 1” NaI(Tl) scintillator
detectors, shielded with collimators of 0.5 cm and 1 cm of circular aperture diameter