Shutdown
Mostrando 1-12 de 101 artigos, teses e dissertações.
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1. Spatial and Temporal Effects of Decommissioning a Zinc Smelter on the Sediment Quality of an Estuary System: Sepetiba Bay, Rio de Janeiro, Brazil
Sepetiba Bay, Rio de Janeiro, Brazil, was home to a zinc smelter until its shutdown in 1998, and during 2011 the remains of the smelter were decommissioned. This study investigates the impact of decommissioning on metal concentrations in the bottom sediments of the bay. In addition to Zn and Cd, Cr, Cu, Ni and Pb are also quantified. The results show that ov
J. Braz. Chem. Soc.. Publicado em: 2020-04
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2. Proposal process management at the plant operation applied to the generating unit shutdown process of Itaipu Binacional
Resumo A Gestão de Processos é um modelo que possibilita a gestão funcional dos processos internos, transversais ou não, de uma organização. Possibilita o controle adequado dos recursos, mapeamento das funções e atividades, e tem por fim a melhoria dos resultados com sustentabilidade. Alinhada a tais objetivos, à Área de Operação da Usina Itaipu
Gest. Prod.. Publicado em: 20/01/2020
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3. Kick Solid Rocket Motor Multidisciplinary Design Optimization Using Genetic Algorithm
ABSTRACT: In this paper, a multidisciplinary design optimization (MDO) approach of a solid propellant kick rocket motor is considered. A genetic algorithm optimization method has been used. The optimized kick solid rocket motor (KSRM) is capable of delivering a small satellite of 200 kg to a circular low earth orbit (LEO) of 600 km altitude. The KSRM should
J. Aerosp. Technol. Manag.. Publicado em: 2013-09
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4. Um modelo de otimização para as operações de produção de vapor em caldeiras industriais
Apresenta-se neste trabalho um modelo de programação linear inteira mista para apoiar algumas das principais decisões na operação de produção de vapor em caldeiras industriais. O modelo contempla as decisões de gerenciamento dos combustíveis: compra nos fornecedores, transporte para a fábrica e níveis dos estoques, assim como determina o modo de f
Gestão & Produção. Publicado em: 2012
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5. Crescimento de trincas em fadiga torsional / Fatigue crack growth in torsional fatigue
With increasing competition and reliability in modern equipment, is of vital importance to studies on the structural fatigue life in the time domain and frequency domain, the advance speed and cost reduction in computing greatly simplifies the prediction fatigue life. But it is also necessary to know the modes of fatigue crack growth, and its mechanisms. Aft
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/07/2011
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6. Comparison between experimental data and numerical modeling for the natural circulation phenomenon
The study of natural circulation phenomenon has been object of crescent interest in scientific community in recent years. The new generation of compact nuclear reactors uses natural circulation of the fluid as a residual heat removal cooling system in case of accident or shutdown. The objective of this paper is to present a comparison between experimental da
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011
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7. Um modelo de otimização para as operações de produção de vapor em caldeiras industriais: um estudo de caso na indústria de alimentos
The aim of this work was to develop and apply a mathematical optimization model to support some key decisions in the steam production operation system with multiple industrial boilers. In the food industry, key decisions into this system are, normally, taken based on people experience, not through decision support tools based on operations research. The prop
Publicado em: 2011
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8. Zzzziriguidum! Consulado: o choque do samba em Florianópolis (memórias e histórias de uma Escola de Samba encravada na cidade - 1976 a 2000)
The purpose of this thesis is to investigate the trajectory of an informal initiative suggested by a meeting of friends and coworkers, mostly from the state of Rio de Janeiro and belonging to the staff of Eletrosul (power plants A/N): the formation of Bloco Carnavalesco Consulado do Samba and, ten years after, the transformation into Grêmio Recreativo e Esc
Publicado em: 2010
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9. Substituição do sincronismo mecânico por sincronismo eletrônico das correias e esteiras de envernizadeiras e impressoras litográficas de folhas metálicas
In the print industry for several segments and a segment of this is on printed sheet metal. This segment is the preparation of steel plates for the manufacture of cans of industry both for domestic use, as industrial. The treatment of steel is based on the application of varnishes and paints that protect the metal against rust and assists in the decoration a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2009
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10. Offshore platform shutdown using critical chain method. / Programação de parada de plataforma marítima utilizando o método da corrente crítica.
The present study discusses the adequacy of the Critical Chain Project Management Method (CCPM) - also known as the Critical Chain Method - for scheduling projects involving shutdowns on oil platforms, as such projects involve decision-making processes under risk conditions. The CCPM is based on the Theory of Constraints and aims at providing more precise an
Publicado em: 2009
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11. Uma proposta para o controle automático da repartida de poços operando por gas lift contínuo
The gas-lift wells restart process has high complexity. If the procedure is not carefully executed, the production liquid flowrate can show an oscillatory behaviour, called #severe slugs#. This situation is undesirable because it causes productivity loss, decreases oil-watergas separation process performance or can lead to the shutdown of the system. Nowaday
Publicado em: 2009
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12. REDES NEURAIS NA MANUTENÇÃO PREDITIVA DE CAMINHÕES FORA DE ESTRADA / NEURAL NETWORKS FOR PREDICTIVE MAINTENANCE ON OFF-HIGWAY TRUCKS
With the increasing demand for ore in the world, the complexity, size and price of mining equipment have increased considerably. As these machines have embedded monitoring technology, the use of such data to increase the reliability and availability of the equipment has become essential in order to reduce maintenance costs. The objective of this work is deve
Publicado em: 2009