The Pressurized Water Reactor Owner's Group (PWROG) is upgrading the original generic Severe Accident Management Guidelines (SAMGs). This upgrade includes a Phase Ⅰ, completed in January 2013, and a Phase Ⅱ, to be completed in December 2013. In Phase Ⅰ, the three original Pressurized Water Reactor (PWR) vendor SAMGs in use (i.e., Babcock and Wilcox, Combustion Engineering and Westinghouse) were each upgraded to include those Nuclear Regulatory Commission (NRC) Fukushima lessons learned that could be included without unnecessary delay. Phase Ⅱ integrates the three .individual SAMGs into one PWR SAMG and includes Fukushima lessons learned not included in Phase Ⅰ. Phase Ⅰ provided information to address a truncated set of lessons learned from the Fukushima severe accident. This included use of unpurified water sources, spent fuel pool severe accident mitigation actions and guidance for ventilating hydrogen from buildings adjacent to the Containment Building. Phase Ⅱ, when completed will include additional Fukushima severe accident lessons learned associated with shutdown modes, multi-unit events, command and control structure and interfaces with other emergency response organization activities. It will also include improvements to overcome known problematic areas, e.g., provide clear guidance that operators can follow without hesitation when the Technical Support Center is not active and eliminate procrastination by Technical Support Center (or Emergency Response Center) personnel in prescribing severe accident mitigating actions. The purpose of this paper is to describe the Phase I SAMG upgrade and present the structure, scope and capability of the Phase Ⅱ PWR SAMG.
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