<?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>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432017000100001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Seguridad estructural de plataformas autoelevables petroleras en operación]]></article-title>
<article-title xml:lang="en"><![CDATA[Structural Safety of Oil Jack-Up Rigs in Operation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[Dante]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera-Miranda]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Mayorga]]></surname>
<given-names><![CDATA[Joan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Cornejo]]></surname>
<given-names><![CDATA[Marcelino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa-Zamudio]]></surname>
<given-names><![CDATA[Esteban Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Petróleo Dirección de Servicios de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pemex Exploración y Producción  ]]></institution>
<addr-line><![CDATA[Ciudad del Carmen ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Mexicano del Petróleo Dirección de Servicios de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Mexicano del Petróleo Dirección de Servicios de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,PEMEX Gerencia de Mantenimiento Integral Marino Subdirección de Mantenimiento y Logística]]></institution>
<addr-line><![CDATA[Ciudad del Carmen ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>18</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>16</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432017000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432017000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432017000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se presentan un modelo de riesgo y otro de confiabilidad que definen la seguridad a exigir y la disponibilidad, respectivamente, de una plataforma marina autoelevable de piernas independientes ante el peligro meteorológico y oceanográfico (metoceánico). Las exigencias se definen en términos del índice de confiabilidad óptimo anual, del factor de reserva de resistencia (RSR) y de solicitaciones metoceánicas. La seguridad disponible se define en términos del índice de confiabilidad calculado a partir de tres estados límite de falla: el vuelco de la plataforma, el hundimiento vertical y deslizamiento lateral de alguna de sus zapatas (spud-can). Si la seguridad disponible es mayor que la que se exige, entonces, el empleo de la autoelevable será adecuado; de lo contrario, la autoelevable y su entorno estarían en una situación muy vulnerable. Además estos modelos serán una herramienta para decidir rentar o no una autoelevable. Al final se realiza una aplicación numérica para dos lugares en el Golfo de México que mostraron un buen comportamiento del sistema empleado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Algorithms and calculations are derived to define the target safety level and real safety level for an independent legs offshore jack-up platform before meteorological and oceanographic hazards in a specific location. The risk model helps to define the required safety level which is defined by the annual optimal reliability index, the reserve strength ratio (RSR) and the maximum environmental loads which must survive. Furthermore, the reliability analysis allows to know the installed (real) safety level of the jack-up in terms of reliability index, for which three failure limit states are considered as follows: overturning of the platform, vertical penetration of spud-cans and horizontal sliding of the foundation. If real safety level is higher than the target safety level, then the performance of the jack-up platform is adequate; on the contrary, the jack-up platform would be under a very vulnerable situation. This work is a tool for decision making on the rent of a jack-up rig. A numerical application for two locations in the Gulf of Mexico, which considers different water depths, shows a good safety behavior of this kind of offshore units for the studied conditions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[seguridad requerida]]></kwd>
<kwd lng="es"><![CDATA[seguridad disponible]]></kwd>
<kwd lng="es"><![CDATA[elevación del casco]]></kwd>
<kwd lng="es"><![CDATA[volteo de la autoelevable]]></kwd>
<kwd lng="es"><![CDATA[costos de las autoelevables]]></kwd>
<kwd lng="en"><![CDATA[safety required]]></kwd>
<kwd lng="en"><![CDATA[safety available]]></kwd>
<kwd lng="en"><![CDATA[elevation the hull]]></kwd>
<kwd lng="en"><![CDATA[Jack-up overturning]]></kwd>
<kwd lng="en"><![CDATA[Jack-up costs]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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