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Nuclear Generation Event Response:Strengthening Safety After Fukushima
Jim ScarolaExecutive Director US Industry Fukushima Response
Fukushima Response Steering
Committee
Nuclear Supplier Owner’s Groups EPRI INPO NEI
• Strategies for EOP, SAMG, EDMG, FLEX• Venting & filtering strategies
• Technology use and advancement• External event assessment• Land contamination strategy development
• Event analysis and lesson learned• Immediate actions for U.S. industry• Strengthening technical assistance for emergencies
• Industry coordinated response• Regulatory interface and prioritization• Stakeholder communications
Industry Response CoordinationThe Way Forward
Assist/Facts/Root Cause/Lessons Learned/Timely Response
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3
Safe Even During Extreme Events
April 28, 2011— Safety maintained at Browns Ferry during tornados that knocked out offsite power and damaged 200 transmission towers
June 26, 2011 —Safety maintained at Ft. Calhoun historical Missouri River flooding
August 23, 2011 — Safety maintained at North Anna during strongest earthquake on record
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Single Unit
Design Basis
Accident
Multi-Unit Beyond Design Basis
Accident
Rare, yet Credible, Extreme Regional
EventStaffing & Roles
?
Emergency Facilities
?
On- & Off-Site
Casualties?
Communications?
Command Control
Authority?
Local Infrastructure
?
Cliff Edge Response
?
Socio-Economic
Impact?
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Actions to Prevent Core Damage Fulfill All Goals
Public Safety
Economic Security
Environmental Protection
The Industry Promotes Actions in the Area of Overlap
IDesign Basis
(Redundancy & Qualification)
Cooling /Make-up Water
Power
IIBeyond
Design Basis(Diversity & Quantity)
Portable Pumps
Portable Generators
Satellite Radios
Battery Packs
Compressors / Gas Bottles
IIIFuel Damage
Impact Management
(Coordinated Response)
Ventingand Filtration
Evacuation / Shelter
Potassium IodineDistribution
Industry Response
IVRecovery
After Stabilization
(Assistance & Future
Prevention)
Quick Hits
Apparent Root Cause
Lessons Learned
Industry Support
Initiating Events
SeismicFlood
Unknown
Safety Assurance for Unpredicted Events
OP / AOP / EOP / SAMG / EDMG
Protecting Public
and the Environment
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Diverse backup safety measures are the key to maintaining safety functions following an extreme event
Adding safety margin to current design may fall short or be misdirected in preparation for the unknown
Portable equipment is the foundation of security strategies and eventually mitigated the event at Fukushima
Provides flexibility for the ERO to respond to unpredicted impacts
Protection
Mitigation
Design Basis External Events
SBO Coping Capability
SAMGs
Emergency Plans
Design Basis External Events
SBO Coping Capability
SAMGs
Emergency Plans
On- Site FLEXEmergencyResponse
Current
Plus On–Site FLEX
Design Basis External Events
SBO Coping Capability
On- Site FLEX
Plus Regional Centers and Industry Response
Capability
Regional Response Centers
Upgraded SAMGs with Filtering
Strategy
Upgraded Emergency Plans
with Industry Response Capability
Adding Layers of Safety
Accident Management
& Human Performance
Training/ Proficiency
Strategy/ Procedures
Command/ Control
Proper Balance, Integration and Authority
Ensuring the PROPER BALANCE of training on
normal, abnormal, emergency, and severe
accidents
Ensuring the INTEGRATION of Ops, AOPs, EOPs, EDMGs, and
FLEX based on sound engineering
Ensuring the proper AUTHORITY to timely implement specified
actions to prevent and mitigate
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Leaders understand the potential for cliff edge impact of new information
Leaders set the expectations of technical rigor and timely disposition of new information
Leaders own the emergency preparation for rare but extreme events
Leaders value the importance of independent oversight in assuring safety
Leaders assure the business structure promotes the continuous improvement of safety
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