Thesis SISTEMATIZACIÓN DE INFORMACIÓN DE MANTENIMIENTO Y ESTUDIO DE CONFIABILIDAD DE EQUIPOS CRÍTICOS DE PLANTA DE PRODUCTOS QUÍMICOS
Date
2018
Authors
SÁEZ POBLETE, MARÍA FRANCISCA
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Abstract
Este trabajo de título se realiza en la Planta de Nitrato de Amonio Prillex América S.Aperteneciente a la empresa Enaex, en donde existe el interés de crear una base de datosque sistematice la información disponible de fallas y mantenimientos realizados a susequipos de acuerdo al estándar ISO 14424 versión 2016, el cual describe toda lainformación que debe ser recolectada para su posterior gestión.Para el desarrollo de esta base de datos se realiza un levantamiento de la informaciónhistórica de fallas y mantenimientos con una data de dos años atrás, que incluye 133equipos de la Planta, distribuidos en los tres sistemas de información actuales: SAP,SIRI y Tronador, los que funcionan cada uno de manera independiente, dificultando laobtención rápida de información y realización de posteriores análisis. Esta informaciónes evaluada destacando las falencias presentes en los sistemas de información ycomparada con los requisitos del estándar ISO14224-16.La información presente en los tres sistemas, es sistematizada mediante la creación deuna base de datos, en un formato sencillo de seguir utilizando a futuro, pero con todoslos requerimientos de información del estándar ISO14224-16.Los equipos presentes en la base de datos son jerarquizados de acuerdo a su criticidad,la que fue evaluada de acuerdo a la frecuencia de fallas, impactos operacionales ymedioambientales, y costos de mantenimiento.Luego, se desarrolla a modo de plan piloto un estudio de confiabilidad, eligiendo dellistado de equipos críticos los que tienen un mayor interés para la empresa, obteniendosus valores de confiabilidad y gráficas características mediante la utilización delsoftware de confiabilidad Weibull++, de Reliasoft.Finalmente, con los resultados del estudio de confiabilidad se proponen mejoras en susplanes de mantenimientos actuales, los cuales no responden a las necesidades de losequipos, ya que no atacan los modos de falla que presentan o las frecuencias correctasde mantenimiento preventivo.
This work is done at Prillex America S.A Plant of Ammonium Nitrate that belongs toEnaex enterprise, where there is an interest in the creation of a database to systemizethe available information of failures and executed maintenance in their equipmentbased on ISO14224-16 standard, in which is described all the information that must becollected for their subsequent management.For the realization of this database, historical information and maintenance is collectedfrom the last two years ago, that includes 133 mechanical equipment distributed in thethree current information systems: SAP, SIRI y Tronador. These systems work in anindependent way, making it difficult to obtain quick information and develop asubsequent analyzes. This information is analyzed highlighting their flaws in eachinformation system compared with the information required for the standard.The information from the three systems is systematized through the creation of a database, in an easy format to be used in the future, but with all the informationrequirements of the standard.The equipment that belongs to this databased are hierarchized in accordance to theircriticality, which was evaluated in accordance with their failure frequency, operationaland environmental impacts, and maintenance costs.Then, as a pilot plan a reliability study is developed, choosing from the criticalequipment those who had a greater interest for the company, getting their reliabilityvalues and characteristic graphics using the Weibull++ Reliasoft software.Finally, having the results of the reliability software, improvements are proposed forthe current equipment maintenance plans, which do not correspond to the necessity ofthe equipment, since they do not attack the failure modes that they display or the correctfrequency of preventive maintenance.
This work is done at Prillex America S.A Plant of Ammonium Nitrate that belongs toEnaex enterprise, where there is an interest in the creation of a database to systemizethe available information of failures and executed maintenance in their equipmentbased on ISO14224-16 standard, in which is described all the information that must becollected for their subsequent management.For the realization of this database, historical information and maintenance is collectedfrom the last two years ago, that includes 133 mechanical equipment distributed in thethree current information systems: SAP, SIRI y Tronador. These systems work in anindependent way, making it difficult to obtain quick information and develop asubsequent analyzes. This information is analyzed highlighting their flaws in eachinformation system compared with the information required for the standard.The information from the three systems is systematized through the creation of a database, in an easy format to be used in the future, but with all the informationrequirements of the standard.The equipment that belongs to this databased are hierarchized in accordance to theircriticality, which was evaluated in accordance with their failure frequency, operationaland environmental impacts, and maintenance costs.Then, as a pilot plan a reliability study is developed, choosing from the criticalequipment those who had a greater interest for the company, getting their reliabilityvalues and characteristic graphics using the Weibull++ Reliasoft software.Finally, having the results of the reliability software, improvements are proposed forthe current equipment maintenance plans, which do not correspond to the necessity ofthe equipment, since they do not attack the failure modes that they display or the correctfrequency of preventive maintenance.
Description
Catalogado desde la version PDF de la tesis.
Keywords
ESTUDIO DE CONFIABILIDAD , PLANTA DE PRODUCTOS QUIMICOS , SISTEMATIZACION DE INFORMACION