<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5901</journal-id>
<journal-title><![CDATA[Ingeniería Energética]]></journal-title>
<abbrev-journal-title><![CDATA[Energética]]></abbrev-journal-title>
<issn>1815-5901</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59012019000200148</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Influência da política de testes periódicos na confiabilidade de sistemas tecnológicos]]></article-title>
<article-title xml:lang="es"><![CDATA[Influencia de la política de pruebas periódicas en la confiabilidad de sistemas tecnológicos]]></article-title>
<article-title xml:lang="en"><![CDATA[Influence of the periodic tests policy on the reliability of technological systems]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivero Oliva]]></surname>
<given-names><![CDATA[José de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perdomo Ojeda]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Rio de Janeiro (UFRJ) Escuela Politécnica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de La Habana (UH) Instituto Superior de Tecnologías y Ciencias Aplicadas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>40</volume>
<numero>2</numero>
<fpage>148</fpage>
<lpage>157</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59012019000200148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59012019000200148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59012019000200148&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O artigo propõe uma metodologia para a construção e avaliação de árvores de falhas de sistemas em espera, com componentes redundantes testados periodicamente, que avalia o impacto das políticas de testes periódicos na indisponibilidade do sistema, através de modelos de indisponibilidade média. A comparação com a análise de indisponibilidade instantânea mostra que o modelo considera adequadamente as políticas de testes periódicos, a partir de dados usualmente registrados nas usinas nucleares. A fórmula para calcular a indisponibilidade média de componentes é generalizada com a inclusão da eficiência e degradação por testes. O modelo foi aplicado à análise de um sistema simplificado, mostrando sua efetividade para avaliar políticas e intervalos de testes, com recomendações para a otimização destes últimos. Sua importância radica na possibilidade de integração ao modelo geral de APS da instalação, em vez de permanecer como uma avaliação separada e complementar.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El trabajo propone una metodología para la construcción y evaluación de árboles de fallos de sistemas en espera, redundantes, con componentes probados periódicamente, que evalúa la influencia de las políticas de pruebas periódicas sobre la indisponibilidad del sistema, mediante modelos de indisponibilidad media. La comparación con los análisis de indisponibilidad instantánea demuestra que el modelo refleja de forma adecuada las políticas de pruebas periódicas, a partir de datos habitualmente registrados en las centrales nucleares. Se generaliza la fórmula para el cálculo de la indisponibilidad media de componentes con la inclusión de la eficiencia y la degradación por pruebas. El modelo fue aplicado al análisis de un sistema simplificado, mostrando su efectividad para evaluar políticas e intervalos de pruebas, con recomendaciones para la optimización de estos últimos. Su importancia radica en la posibilidad de integración al modelo general de APS, en lugar de permanecer como una evaluación separada y complementaria.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The paper proposes a methodology for the construction and evaluation of fault trees for stand-by redundant systems, periodically tested, evaluating the influence of the periodic tests policy on the system unavailability, through a mean unavailability model. The comparison with the instantaneous unavailability analysis shows that the model adequately reflects the periodic tests policies, based on data usually recorded in nuclear power plants. The formula for calculating the components mean unavailability was generalized with the inclusion of test efficiency and test-caused degradation. The model was applied to the analysis of a simplified system, showing its effectiveness to evaluate policies and test intervals, with recommendations for the optimization of the latter. Its importance lies in the possibility of its integration into the general PSA model of the facility, instead of remaining as a separate and complementary evaluation.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[testes periódicos]]></kwd>
<kwd lng="pt"><![CDATA[árvores de falhas]]></kwd>
<kwd lng="pt"><![CDATA[indisponibilidade média]]></kwd>
<kwd lng="pt"><![CDATA[indisponibilidade instantânea]]></kwd>
<kwd lng="es"><![CDATA[pruebas periódicas]]></kwd>
<kwd lng="es"><![CDATA[árboles de fallos]]></kwd>
<kwd lng="es"><![CDATA[indisponibilidad media]]></kwd>
<kwd lng="es"><![CDATA[indisponibilidad instantánea]]></kwd>
<kwd lng="en"><![CDATA[periodic tests]]></kwd>
<kwd lng="en"><![CDATA[fault trees]]></kwd>
<kwd lng="en"><![CDATA[mean unavailability]]></kwd>
<kwd lng="en"><![CDATA[instantaneous unavailability]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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