Optimization of the reactivity control drum system of ELECTRA

In this paper, an optimized control drum system for the European Lead Cooled Training Reactor (ELECTRA) is proposed. By changing the number of rotating drums from 6 to 12, we succeed in reducing the maximum rotational worth of a single drum from 4 $ to 1.64 $. As a consequence, the safety margin during reactivity insertions is significantly improved.

► The design is modified by introducing 12 drums.
► The maximum rotational worth of a single drum become 1.64 $.
► Operational life is 14 full power years.
► Safety margin is sufficiently increased.