Reliability and Redundancy Allocation Analysis Applied to a Nuclear Protection System
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2021
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| author | Alexander Lucas Busse |
| author_facet | Alexander Lucas Busse |
| contents | Reliability and Redundancy Allocation Analysis Applied to a Nuclear Protection System Alexander Lucas Busse João Manoel Losada Moreira Biología SMR Reliability protection system Brazil is building, with national technology, two small nuclear reactors for propulsion and for the production of radioisotopes with thermal powers between 20 and 50 MW. These nuclear reactors fit more into the small modular reactor (SMR) class than the large nuclear power plant class. In this article, we apply the SMR design approach to propose a reactor protection system architecture for the small reactor under construction in the country. For this, the probabilistic analysis of the architecture of a protection system of a nuclear reactor is evaluated to determine the sensitivity of the components through a modeling of Reliability Block Diagram. The modification of the architecture and the addition of redundancies were evaluated when using components with a lower useful life than the components normally used for this purpose. The results showed that after one year of operation, the reference RPS system has a failure probability of 0.17%. The modified system, with components with a shorter life span, presents a point reliability value only 0.070% lower than the reference, but this difference grows exponentially with time, and in 10 years of operation it can reach values above 95%. The use of equipment with shorter life characteristics implies a greater number of redundancies and, in addition, a greater number of maintenance procedures and spare parts. Therefore, this technical feasibility analysis should consider RAM simulation as well. 2021 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280949019 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.9 |
| format | Artículo científico |
| id | redalyc_722280949019 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Reliability and Redundancy Allocation Analysis Applied to a Nuclear Protection System Alexander Lucas Busse Biología SMR Reliability protection system Reliability and Redundancy Allocation Analysis Applied to a Nuclear Protection System Alexander Lucas Busse João Manoel Losada Moreira Biología SMR Reliability protection system Brazil is building, with national technology, two small nuclear reactors for propulsion and for the production of radioisotopes with thermal powers between 20 and 50 MW. These nuclear reactors fit more into the small modular reactor (SMR) class than the large nuclear power plant class. In this article, we apply the SMR design approach to propose a reactor protection system architecture for the small reactor under construction in the country. For this, the probabilistic analysis of the architecture of a protection system of a nuclear reactor is evaluated to determine the sensitivity of the components through a modeling of Reliability Block Diagram. The modification of the architecture and the addition of redundancies were evaluated when using components with a lower useful life than the components normally used for this purpose. The results showed that after one year of operation, the reference RPS system has a failure probability of 0.17%. The modified system, with components with a shorter life span, presents a point reliability value only 0.070% lower than the reference, but this difference grows exponentially with time, and in 10 years of operation it can reach values above 95%. The use of equipment with shorter life characteristics implies a greater number of redundancies and, in addition, a greater number of maintenance procedures and spare parts. Therefore, this technical feasibility analysis should consider RAM simulation as well. 2021 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280949019 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.9 |
| title | Reliability and Redundancy Allocation Analysis Applied to a Nuclear Protection System |
| topic | Biología SMR Reliability protection system |
| url | https://www.redalyc.org/articulo.oa?id=722280949019 |