Complex sentence: Originally designed as the Midland Nuclear Power Plant with twin pressurized water reactors of Babcock and Wilcox design with once-through steam generators (OTSGs) similar to those at Oconee.
Split into simpler sentences: Originally designed as the Midland Nuclear Power Plant, the initial design called for two Babcock and Wilcox pressurized water reactors. The design called for once-through steam generators (OTSGs) similar to those at Oconee.