Investor Presentaiton

5. Reliable Hardened Vent (RHV) Order: 5.1 RHV for Mark I/II Containments - Remove decay heat and maintain control of containment pressure within acceptable limits following beyond design basis events Accessible and operable under a range of conditions, including a prolonged SBO and plant conditions resulting from inadequate containment cooling Tier 3: 5.2 RHV for Other Containments US-ABWR Design Containment Design: Reinforced Concrete Containment Vessel (RCCV) Containment Vent Design: Hardened Vent Passive Design (Rupture Disks with Normally Open Valves) TOSHIBA Copyright © 2012 Toshiba Corporation. All rights reserved. Leading Innovation >>> 35

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