Tratamento de falhas de uma caldeira de biomassa utilizando a Análise de Modo e Efeito de Falhas - FMEA: estudo de caso em uma indústria papeleira

Abstract

The Failure Mode and Effect Analysis (FMEA) is on of the main tool used to failures analysis by maintenance management sector, since it aims to guarantee of the industrial assets reliability and availability by treating the failure modes to avoid their occurrence or recurrence. This work aims to apply the FMEA analysis in the biomass boiler treatment of failures, whom is installed in a paper mill located in the southcentral region of Paraná. The biomass boiler is installed in the process intermediate of paper production, being the only thermal energy source that provides the paper drying in the production, not having passive and/or active backup. Therefore, failure events that cause biomass boiler operation disruption directly affect the paper production system operational availability, in addition to providing risks to the workers' physical integrity and company property due to the fact that it is a pressure vessel (Category B - NR 13). As a result of the FMEA application, it was obtained: understanding the biomass boiler critical points for maintenance and operation (functional tree), knowledge of the machine elements that most affect of the biomass boiler operation interruption and which are difficult to access to perform maintenance (impact on maintainability), and the appropriate maintenance strategy to be adopted for each of the subsystem this industrial asset , whom that provides a guarantee of operational reliability and improvement of industrial process performance.