United States Industry Perspectives on Implementation of Post-Fukushima Actions

Transcription

1 United States Industry Perspectives on Implementation of Post-Fukushima Actions Andrew Mauer Senior Project Manager, Risk Assessment, Nuclear Energy Institute Michael Powell Director, Fukushima Initiatives, Arizona Public Service 28 March 2017 Vienna, Austria

2 Highlights Bias for action Regulatory response FLEX: Cornerstone of U.S. response Strategic solutions Summary 2

3 The Nuclear Energy Institute s Mission Foster the beneficial uses of nuclear technology before Congress, the White House and executive branch agencies, federal regulators, and state policy forums; proactively communicate accurate and timely information; and provide a unified industry voice on the global importance of nuclear energy and nuclear technology. 3

4 An Industry United The Way Forward: Building Blocks Maintain Focus on Excellence in Existing Plant Performance (INPO) Develop and Issue Lessons Learned from the Fukushima Events (INPO) Improve the Effectiveness of U.S. Industry Response Capability to Global Nuclear Events (INPO/NEI) Develop and Implement a Strategic Communications Plan (NEI) Develop and Implement the Industry's Regulatory Response (NEI) Participate and Coordinate with International Organizations (INPO/EPRI) Provide Technical Support and R&D Coordination (EPRI/NSSS Owners Groups) 4

5 A Bias for Action The Way Forward: Guiding Principles Ensure equipment and guidance, enhanced as appropriate, result in improvements in response effectiveness, using a diverse, flexible and performance-based approach for beyond design bases activities Address guidance, equipment and training to ensure long-term viability of safety improvements. Develop response strategies that are performance-based, risk-informed and account for unique site characteristics. Maintain a strong interface with federal regulators to ensure regulatory actions are consistent with safety significance and that compliance can be achieved in an efficient manner. Coordinate with federal, state and local government and their emergency response organizations on industry actions to improve overall emergency response effectiveness. Communicate aggressively the forthright approach the U.S. industry is taking to implement the lessons from the Fukushima Daiichi accident. 5

6 Regulatory Response 90 day report Near Term Task Force Recommendations Orders Address adequate protection 10 CFR 50.54(f) Request information to support regulatory decision making 6

7 NRC Orders Mitigating Strategies for beyond design basis events (FLEX) EA Reliable Hardened Vent for Mark I and II containments EA Spent Fuel Pool Level Instrumentation EA Severe Accident Capable Hardened Containment Vent System EA

8 NRC Request for Information - 10 CFR 50.54(f) Seismic and Flooding - Walkdowns confirm design basis - Hazard Reevaluations, utilize current methods of evaluation Emergency Preparedness - Staffing and Communications 8

9 Implementation Activities: All On or Ahead of Schedule 2019 VENTS - PHASE 2 LONG-TERM OVERSIGHT 2018 HARDENED VENTS - PHASE 1 SUPPLEMENTAL HAZARD EVALUATIONS 2017 NRC POST-COMPLIANCE INSPECTIONS NRC DOCUMENTATION OF REVIEWS MITIGATION OF BEYOND DESIGN BASIS EVENTS RULE 2016 MITIGATION STRATEGIES SPENT FUEL POOL LEVEL INSTRUMENTATION EMERGENCY PLANNING/RESPONSE UPGRADES REEVALUATION OF FLOODING AND SEISMIC HAZARDS DISPOSITION TIER 2&3 ACTIVITIES 9

10 Current Challenges Knowledge Transfer and Knowledge Management Sustainability Preservation and capitalization of significant investments Consistency in implementation inspections underway 10

11 Cornerstone of U.S. Response: FLEX NSRC Call from Affected Site Requesting NSRC Support FedEx ships from NSRC to either Staging Area or to Memphis or Phoenix Airport 11

12 NEI 12-06: Diverse and Flexible Coping Strategies (FLEX) Implementation Guide Defined external hazards, challenges and considerations including warning time Assumed initial conditions FLEX capabilities and storage requirements FLEX strategies and timing, phased approach Defense in depth concept Procedure integration On and off-site resources and capabilities Mitigation Strategy Assessments 12

13 Issue Resolution Battery Duty Cycles Boron Mixing BWR Anticipatory Venting CENTS Code FLEX Maintenance MAAP Analysis Shutdown Modes NOTRUMP Code SHIELD RCP Seals FLOWSERVE RCP Seals Westinghouse RCP Seals National SAFER Response Centers Change processes Maintenance rule Hoses and Cables 13

14 Suite of NEI Guidance NEI 12-01: Guideline for Assessing Beyond-Design-Basis Accident Response Staffing and Communications Capabilities NEI 12-02: Industry Guidance for Compliance with NRC Order EA to Modify Licenses with Regard to Reliable Spent Fuel Pool Instrumentation NEI 12-06: Diverse and Flexible Coping Strategies (FLEX) Implementation Guide NEI 13-06: Enhancements to Emergency Response Capabilities for Beyond- Design-Basis Accidents and Events NEI 14-01: Emergency Response Procedures and Guidelines for Beyond- Design-Basis Events and Severe Accidents NEI 14-06: Developing an Organization Approach to Beyond-Design-Basis Event Planning and Response Requirements NEI 16-06: Crediting Mitigating Strategies in Risk-Informed Decision Making NEI 16-08: Guidance for Optimizing the Use of Portable Equipment 14

15 FLEX Approach Phase Strategies 15

16 FLEX Approach Capability and Storage Capability - Diverse set of equipment with flexible deployment options and common connection points - Maintain core, containment and SFP cooling to mitigate the effects of beyond-design-basis external events Storage - Diverse locations or reasonably protected in structures consistent with commercial standards - Able to be functional in a time frame to preclude core damage 16

17 Protected Storage Example Monolithic Dome 17

18 National SAFER Response Centers Two national response centers capable of delivering equipment to any site in the U.S. within 24 hours Enough equipment to support (2) 2-unit sites simultaneously plus maintenance spares Each piece is designed to be flown in fixed wing aircraft and externally by helicopter Trained personnel deployed with equipment Standardized color coded connections Commercial grade equipment Support from other nuclear stations 18

19 National SAFER Response Center FLEX Equipment 19

20 SAFER Program and Equipment Electrical TPC Connectors Mechanical Storz Fittings 20

21 SAFER Program and Equipment National Response NSRC Center Memphis or Phoenix Call from Affected Site Requesting NSRC Support FedEx ships from NSRC to either Staging FedEx ships from NSRC to either Staging Area Area or to Memphis or Phoenix Airport or to Memphis or Phoenix Airport 21

22 Strategic Solutions Improve SAFETY and efficiency of the nuclear fleet with the use of portable equipment Maximize Areas of Credit Expand operational and regulatory credit given to mitigating strategies Maximize FLEXibility Expand where portable equipment is used in plant operations FLEX and Beyond Be inclusive of all portable equipment beyond just FLEX 22

23 Industry Framework Guidance Improving plant safety and operations using portable equipment Evaluating portable equipment in risk informed decision making 23

24 Example: Risk RCS Makeup Flowpath RWT CH Pumps (3) RCS 2A COLD LEG CS LPSI Other SI Train SDC HX CS Hdr 2B COLD LEG 1A COLD LEG HPSI 1B COLD LEG 24

25 Example: SFP RISK Makeup Flowpath DWST Demineralized Water Storage Tank ALTERNATE HEADER PRIMARY HEADER FLEX+1 Pump FLEX Pump Spent Fuel Pool 25

26 Summary Safety is our highest priority Significant safety enhancements achieved Substantial completion of Fukushima actions in 2016 Committed to timely completion of actions to comply with the NRC rulemaking Remarkable stakeholder involvement since 2011 has enabled U.S. success We appreciate the opportunity to participate in this important forum 26