2383 research outputs found
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I0960 - Imagem do Reator Argonauta
No full textDimensão: 11x15 cmFoto P&B com vista superior em diagonal, do lado direito, do Reator Argonauta no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I0983 - Imagem do Reator Argonauta
No full textDimensão: 18,3x24 cmFoto P&B de estacionamento e da fachada do prédio do Reator Argonauta, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I1108 - Imagem da Usina de Boro 10
No full textDimensão: 9x12 cmFoto colorida com vista das instalações da Usina de Boro 10, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I1400 - Imagem da Sala de Chefia do Serviço Médico
No full textDimensão: 18x24 cmFoto P&B de sala da chefia do serviço médico, no prédio de Serviço médico e Auditório, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro
I1407 - Imagem do IEN
No full textDimensão: 18x24 cmFoto P&B com vista aérea do Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Com a entrada e portaria e os prédios do Reator Argonauta, de Administração e Pós-graduação e de Serviços médicos e Auditório
I1428 - Imagem de espectrometria de raio-x
No full textDimensão: 12x8 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de equipamento de espectrometria de raio-x, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 3 exemplares
I1457 - Imagem do Ciclotron
No full textDimensão: 6,8x12 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de planta com perspectiva do prédio do Ciclotron, visto de cima, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 5 exemplares
I1461 - Imagem de procedimento
No full textDimensão: 8x12 cm (imagem); Dimensão: 34x24 cm (suporte)Impressão P&B de teste do forno com bloco equalizador, no Instituto de Engenharia Nuclear, na Ilha do Fundão, Rio de Janeiro. Possui 4 exemplares
Received radiation dose assessment for nuclear plants personnel by video-based surveillance
Get PDFThis work proposes the development of a system to evaluate received radiation
dose for nuclear plants personnel. The system is conceived to operate in a complementary
form to the existing approaches for radiological protection, thus o ering
redundancy, what is desirable for critical plants operation. The proposed system
must operate in an independent form on the actions to be performed by the operators
under evaluation. Therefore, it was decided it would be based on methods
used for video surveillance. The nuclear plant used as example is Argonauta Nuclear
Research Reactor, belonging to Instituto de Engenharia Nuclear, Comiss~ao
Nacional de Energia Nuclear (Nuclear Engineering Institute, National Nuclear Energy
Commission). During this thesis research, both radiation dose rate distribution
and video databases were obtained. Methods available in the literature, for targets
detection and/or tracking, were evaluated for this database. From these results, a
new system was proposed, with the purpose of meeting the requisites for this particular
application. Given the tracked positions of each worker, the radiation dose
received by each one during tasks execution is estimated, and may serve as part of
a decision support system
Design Issues on Using FPGA-Based I&C Systems in Nuclear Reactors
Get PDFThe FPGA (field programmable gate array) is widely used in various fields of industry. FPGAs can be
used to perform functions that are safety critical and require high reliability, like in automobiles, aircraft
control and assistance and mission-critical applications in the aerospace industry. With these merits,
FPGAs are receiving increased attention worldwide for application in nuclear plant instrumentation and
control (I&C) systems, mainly for Reactor Protection System (RPS). Reasons for this include the fact
that conventional analog electronics technologies are become obsolete. I&C systems of new Reactors have
been designed to adopt the digital equipment such as PLC (Programmable Logic Controller) and DCS
(Distributed Control System). But microprocessors-based systems may not be simply qualified because
of its complex characteristics. For example, microprocessor cores execute one instruction at a time, and
an operating system is needed to manage the execution of programs. In turn, FPGAs can run without an
operating system and the design architecture is inherently parallel. In this paper we aim to assess these
and other advantages, and the limitations, on FPGA-based solutions, considering the design guidelines
and regulations on the use of FPGAs in Nuclear Plant I&C Systems. We will also examine some circuit
design techniques in FPGA to help mitigate failures and provide redundancy. The objective is to show
how FPGA-based systems can provide cost-effective options for I&C systems in modernization projects
and to the RMB (Brazilian Multipurpose Reactor), ensuring safe and reliable operation, meeting licensing
requirements, such as separation, redundancy and diversity