Desenvolvimento do Programa da Garantia da Confiabilidade em uma planta nuclear brasileira subsidiado por um modelo de Confiabilidade, Disponibilidade e Manutenibilidade

Abstract

The main purpose of this work is to present a methodology for the development of a Reliability Assurance Program (PGC) specific for a PWR experimental nuclear installation under implementation in Brazil, through the analysis of the experimental facility and the development of a preliminary PGC subsidized by a Reliability, Availability and Maintainability (RAM) model. For this, an extensive bibliographical research is carried out in the available nuclear area databases, in addition to the study of an evaluation carried out in the long-term decay heat removal system during a tire refueling of the studied experimental plant, whose data were used for application of the PGC. The necessary steps for applying the developed PGC are followed, using data from the system assessment of the studied plant, resulting in a list of components of significant risk for the PGC, which have an important influence on the safety guarantee potential, to which the objective of the PGC should be to ensure that risk does not increase and to protect against performance deterioration (improved maintainability and serviceability and minimized out-of-service time). Of the latter, those that also have an important influence on the risk reduction potential were identified, and the objective of the PGC for them should be to make the present risk smaller and receive the greatest attention in the search for possible improvements.