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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2023.tde-03012024-122616
Document
Author
Full name
Renan Aguzzoli Travi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2023
Supervisor
Committee
Garcia, Claudio (President)
Farias, Marcos Santana
Marques, Fellipe Garcia
Title in Portuguese
Avaliação do sistema diverso de atuação em plantas nucleares de potência.
Keywords in Portuguese
Prevenção de acidentes (Segurança)
Usinas nucleares
Abstract in Portuguese
A crescente importancia da energia nuclear e a gera¸cao de eletricidade a partir de usinas nucleares tornam necess´ario aprimorar a seguran¸ca e confiabilidade destas usinas. Para atender a estes requisitos, sistemas digitais redundantes sao utilizados e, com isso, surge a possibilidade de Falha de Causa Comum. Para mitigar esta ocorrencia, uma alternativa ´e a implementa¸cao do Sistema Diverso de Atua¸cao (SDA), que tem se mostrado muito eficaz na consecu¸cao desse objetivo. Nao h´a muitas publica¸coes sobre o SDA, uma vez que o assunto ´e relativamente novo na ind´ustria nuclear e nao h´a consenso sobre suas bases de projeto. Ainda, os ´orgaos reguladores internacionais nao possuem uma diretriz unificada sobre o tema. O presente trabalho apresenta um levantamento do estado da arte do SDA, assim como de seus motivadores, a falha de causa comum e os conceitos de diversidade e defesa em profundidade. Com base no levantamento bibliogr´afico, ´e realizada uma an´alise comparativa dos preceitos da literatura, assim como uma avalia¸cao destes. O trabalho apresenta tamb´em a possibilidade do uso do Field Programmable Gate Arrays (FPGA) no desenvolvimento de SDA e a discussao de alguns projetos que implementaram o SDA.
Title in English
Untitled in english
Keywords in English
Common cause failure
Diverse actuation system
FPGAUntitled in english
Nuclear power plant
Abstract in English
The growing significance of nuclear energy and electricity generation from nuclear power plants make it necessary to enhance the safety and reliability of these plants. To meet these requirements, redundant digital systems are employed, giving rise to the potential for Common Cause Failure. To mitigate such occurrences, an alternative approach is the implementation of the Diverse Actuation System (DAS), which has proven highly effective in achieving this goal. There are limited publications on the DAS, as the topic is relatively novel in the nuclear industry, and there is no consensus regarding its design basis. Furthermore, international regulatory agencies lack a unified guideline on the subject. The present work provides a survey of the state of the art in DAS, along with its driver, common cause failure, and the concepts of diversity and defense in depth. Based on a literature review, a comparative analysis of the literatures precepts is conducted, as well as an evaluation of these. The paper also explores the potential use of Field Programmable Gate Arrays (FPGA) in DAS development and discusses some projects that have implemented DAS.
 
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Publishing Date
2024-01-05
 
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