ABWR
Advanced Boiling Water Reactor
Advanced Boiling Water Reactor by GE Hitachi Toshiba, 1350-1450 MWe with active safety and digital controls; operational since 1996.
The ABWR features internal pumps, fine motion control rods, and 872 fuel assemblies. Six units operate in Japan (Kashiwazaki-Kariwa, Hamaoka, Shika); NRC certified in 1997. ABWR-II variant proposed with passive features.
Why it matters now
ABWR experience supports Japan's 2025-2026 reactor restarts and exports, influencing BWR SMRs like BWRX-300 amid global capacity expansion.