Investor Presentaiton

US-ABWR Back-Up Power Supply ■US-ABWR design includes Power Source Redundancy and Diversity - 3 redundant Emergency Diesel Generators (separated physically and electrically) - 8 hours of DC battery power (for SRV operation, RCIC controls, and other instrumentation) - Combustion Turbine Generator • • • • Operates during SBO without external AC power Has a 7 day on site fuel storage volume Provides backup power to any one of three ECCS divisions Housed above the design flood level and is in a building protected from adverse site related weather conditions TOSHIBA Copyright © 2012 Toshiba Corporation. All rights reserved. Leading Innovation >>> 21

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