Analysis of Loss of Flow Events on Brazilian Multipurpose Reactor Using the Relap5 Code | Zendy

Humberto Vitor Soares | Zendy; Ivan Dionysio Aronne | Zendy; Antonella Lombardi Costa | Zendy; Cláubia Pereira | Zendy; Maria Auxiliadora F. Veloso | Zendy

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Analysis of Loss of Flow Events on Brazilian Multipurpose Reactor Using the Relap5 Code

Author(s) -

Humberto Vitor Soares,

Ivan Dionysio Aronne,

Antonella Lombardi Costa,

Cláubia Pereira,

Maria Auxiliadora F. Veloso

Publication year - 2014

Publication title -

international journal of nuclear energy

Language(s) - English

Resource type - Journals

eISSN - 2314-6060

pISSN - 2356-7066

DOI - 10.1155/2014/186189

Subject(s) - thermal hydraulics , transient (computer programming) , nuclear engineering , steady state (chemistry) , environmental science , research reactor , core (optical fiber) , flow (mathematics) , work (physics) , mechanics , engineering , computer science , mechanical engineering , heat transfer , chemistry , physics , nuclear physics , neutron , operating system , telecommunications

This work presents the thermal hydraulic simulation of the Brazilian multipurpose reactor (RMB) using a RELAP5/MOD3.3 model. Beyond steady state calculations, three transient cases of loss of flow accident (LOFA) in the primary cooling system have been simulated. The RELAP5 simulations demonstrate that after all initiating events, the reactor reaches a safe new steady state keeping the integrity and safety of the core. Moreover, a sensitivity study was performed to verify the nodalization behavior due to the variation of the thermal hydraulic channels in the reactor core. Transient calculations demonstrate that both nodalizations follow approximately the same behavior

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