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Oral presentation

Safety studies for Japanese demo design with AINA code

Rivas, J. C.*; Nakamura, Makoto; Someya, Yoji; Takase, Haruhiko; Tobita, Kenji; de Blas, A.*; Dies, J.*; Fabbri, M.*; Riego, A.*

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Safety studies of plasma-wall transients have been performed with AINA code for the Japanese DEMO design (water cooled pebble bed). The AINA code has been adapted from its original mission of performing safety studies for ITER to this new mission. A breeding blanket model has been implemented in code. The configuration has been changed to implement the design parameters of DEMO reactor. First analyses performed show the behavior of the reactor during ex-vessel LOCA transients and during overpower events.

Oral presentation

Safety studies of plasma-wall events with AINA code for Japanese DEMO

Rivas, J. C.*; Nakamura, Makoto; Someya, Yoji; Takase, Haruhiko; Tobita, Kenji; Dies, J.*; Blas, A. de*; Fabbri, M.*; Riego, A.*

no journal, , 

In the frame of JAPAN-EU collaborative work for development of AINA code in 2014-2016, a version of AINA code has been developed for the Japanese DEMO WCPB design. During 2014, the AINA code was adapted from ITER to this new mission. A breeding blanket model was implemented in code. The configuration was changed to implement the design parameters of DEMO reactor. Finally, safety studies of plasma-wall transients affecting blanket region were performed. During 2015, plasma models were improved both for plasma core and for divertor (improved SOL model). Safety analyses affecting divertor were performed, considering thermohydraulic accidents and plasma transients where loss of control function was assumed. First analyses performed for the Japanese DEMO design show the behavior of the reactor during Ex-Vessel LOCA and during overpower events. The preliminary conclusions point to the possibility of considering the plasma control system as a safety important component.

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