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US-ABWR Coping Capability against SBO US-ABWR ECCS Configuration & Power Supply Overview ADS Feed Water Line Main Steam Line Operational Bus A Operational Bus B Operational Bus C CTG Division I Division II Division III EDG EDG EDG HPCF Pump LPFL Pump LPFL LPFL Pump Pump DG DG Reactor Core HPCF Pump Diesel Generators External Power Source RCIC Pump Power Supply ✓ 3 redundant EDG ✓ Alternative AC power (CTG). Connection to Bus in 10 minutes 7 Day onsite fuel supply AC Independent ECCS (RCIC) ✓ Reactor steam driven ✓ High pressure RPV coolant makeup ✓ 8 hours DC Battery for electrical operation TOSHIBA Copyright © 2012 Toshiba Corporation. All rights reserved. Leading Innovation >>> 20

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