1922 鉛ビスマス冷却長寿命小型炉 LSPR の安全特性

抄録

Lead bismuth eutectic (LBE) shows a good performance on neutron economy, and LEB cooled fast reactor can be designed as an excellent long-life small reactor. LEB is good not only for neutron economy but for chemical inertness and high boiling point, which may realize a much safer reactor than conventional sodium-cooled reactor. We have designed such a long-life small reactor and name it LSPR, whose total power is 150MWt (53MWe). During whole reactor life of 12 years the excess reactivity required for burnup is very low, and negative coolant dilatation coefficient is confirmed. This paper presents safety performances of LSPR at severe accidents