Evaluación del sistema eléctrico instalado, estudio de puesta a tierra, evaluación del factor de potencia, actualización del diagrama unifilar y diseño de Manuales de Mantenimiento Autónomo en la empresa COCORISA
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The Company Corrugadora de Costa Rica S.A. under the symbol COCORISA, along with companies related Sacos and Fotolit, belongs to Smurfit Kappa group, which is one of the leading companies worldwide in the manufacture of packaging paper-based, with 370 operating centers distributed in 34 countries, of which 21 are in Europa and the remaining 13 in America. The operations center in Costa Rica is located in Lagunilla, Heredia, a place where the three companies are located, above the Sacos Company was located in the province of Cartago. COCORISA Company engaged in the manufacture and forming of corrugated cardboard, offering a wide range of packaging solutions made of paper, for the industrial, commercial, agricultural and others. The main objective of this project is to provide the company with necessary information about the stade of the grid, which facilitates decision-making and allow redesign implement measures to increase reliability and security system. There electrical recommendations are based on NEC 2008 and are set according to the criteria overload, over-sizing, voltaje drop and good electrical practices. The electrical lifting it possible to design technical papers and visual control boards, to facilitate the identification of load and branch circuits in the electrical network. A service for a study of the system grounding in the company was hired, due to the ambiguity of its initial design, which caused the mixture between neutral and ground conductors, creating the appearance of currents in the ground mesh, it’s for this reason that a study was done to determine compliance with current regulations, according to the operations conditions. The necessary recommendations are made in order to ensure comprehensive security of personnel and facilities. This project also includes an analysis of power factor, due to the incorporation of the company Sacos, which includes an entire production line that directly affects this parameter, viii so a total demand in projected by the two companies together and necessary reactive power is calculated to compensate the system, in order to correct the power factor to a value defined by the maintenance department, avoiding fines billing. These improvements include updating the unifiliar diagram, designed to show the power distribution in the plant, obtain the demand factor of load centers, the location of the branch and technical data such as wire size, protection, pipelines, distances, short-circuit and others. Autonomous maintenance manuals for corrugating were designed, based on manuals and maintenance protocols already used by the department, which include aspects of inspection, cleaning, lubrication and security measures, each activity incorporates its respective frequency, duration, and photographs for easy interpretation, and identification, with the aim of a continuous improvement both in maintaining the machines as across the enterprise. Some recommendations on a general level was established, through observation an identification not recommended situations, in order to improve the performance of machines and electrical system, hiring additional services included as a study of power quality, shortcircuit, protection coordination and substation maintenance.
Proyecto de Graduación (Licenciatura en Ingeniería en Mantenimiento Industrial) Instituto Tecnológico de Costa Rica, Escuela de Ingeniería en Mantenimiento Industrial, 2016.