Small break loss of coolant accident of 200 cm² in cold leg of primary loop of ANGRA 2 nuclear power reactor evaluation

BORGES, EDUARDO M.SABUNDJIAN, GAIANE2020-01-152020-01-15BORGES, EDUARDO M.; SABUNDJIAN, GAIANE. Small break loss of coolant accident of 200 cm² in cold leg of primary loop of ANGRA 2 nuclear power reactor evaluation. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. <b>Proceedings...</b> Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 5479-5490. Disponível em: http://repositorio.ipen.br/handle/123456789/30728.http://repositorio.ipen.br/handle/123456789/30728The aim of this paper is evaluated the consequences to ANGRA 2 nuclear power reactor and to identify the flow regimes, the heat transfer modes, and the correlations used by RELAP5/MOD3.2.gama code in ANGRA 2 during the Small-Break Loss-of-Coolant Accident (SBLOCA) with a 200cm2 of rupture area in the cold leg of primary loop. The Chapter 15 of the Final Safety Analysis Report of ANGRA 2 (FSAR-A2) reports this specific kind of accident. The results from this work demonstrated the several flow regimes and heat transfer modes that can be present in the core of ANGRA 2 during the postulated accident. The results obtained for ANGRA 2 nuclear reactor core during the postulated accident were satisfactory when compared with the FSAR-A2. Additionally, the results showed the correct actuation of the ECCS guaranteeing the integrity of the reactor core.5479-5490openAccessangra-2 reactorcladdingeccsheat transferprimary coolant circuitsreactor accident simulationreactor coressblocasteady-state conditionstwo-phase flowvoid fractionSmall break loss of coolant accident of 200 cm² in cold leg of primary loop of ANGRA 2 nuclear power reactor evaluationTexto completo de evento0000-0001-9544-4509https://orcid.org/0000-0001-9544-4509