Investor Presentaiton

US-ABWR SBO Response Capability Without CTG US-ABWR design can mitigate 72 hour SBO without CTG First 8-Hours Core Cooling RCIC After 8-Hours ADS (powered by DC batteries) RHR/ACIWA (FPS or portable diesel driven pump) Containment Integrity No action required COPS (Press./Temp. < Design value) SFP Cooling No action required (Temp. (Passive PCV venting system rupture disk press. = 2Pd) RHR/ACIWA Boiling temp.) (FPS or portable diesel driven pump) TOSHIBA Copyright © 2012 Toshiba Corporation. All rights reserved. Leading Innovation >>> 28

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