1

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

2

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

4

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?

5

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

7

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

9

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

10