Software para avaliação de confiabilidade de sistemas instrumentais de segurança

Abstract

To properly specify and design a Safety Instrumented System for a plant is a complex and extensive task. The analysis of the e®ects caused by possible process failures, as well as the use of quantitative techniques for assessing reliability and se- curity allows one to obtain a higher re¯nement of protective measures to be adopted to reduce risks. The software tool presented was developed to evaluate the reliabil- ity and availability of Safety Instrumented Systems. The software is based on the Markov analysis method. It also uses a set of models developed for the representa- tion of various redundant con¯gurations and di®erent security logics. The use of the software results in the reduction of the time spent in the evaluation process of SIS projects.