MoPSC Nuclear Pres 033011

8/7/2019 MoPSC Nuclear Pres 033011

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2 Nuclear Energy and Safety Informational Session

NUCLEAR ENERGY IN JAPAN

� 54 operating nuclearreactors (49 gigawatts)

� Two nuclear plants underconstruction

� Tokyo Electric Power Co.

produces 27% of Japanselectricity

� 12,000 MW of nuclearenergy capacity shut down




FUKUSHIMA DAIICHI NUCLEAR POWER FACILITY

BEFORE NATURAL DISASTERS

Unit 1

Unit 2

Unit 3Unit 4

Units 5, 6

At the time of the earthquake

R

eactors 1, 2 and 3 operating

Reactors 4, 5 and 6 shutdown formaintenance, inspection, refueling




BOILING WATER REACTOR DESIGN

Spent Fuel Pool

Reactor Vessel

Suppression Pool (Torus)

Primary Containment

Steel Containment Vessel

Secondary Containment

Area of Explosion

at Fukushima DaiichiUnits 1 and 3

Seawater Is Being Pumped

Into Reactor Vessels at

Units 1, 2 and 3

Boiling Water Reactor DesignAt Fukushima Daiichi




DESIGN COMPARISON ±

PRESSURIZED AND BOILING WATER REACTORS

Pressurized

Water

Reactor (69 total in U.S.)

Boiling

Water

Reactor (35 total in U.S.)




CALLAWAY AND WOLF CREEK WERE DESIGNED AS THE

FIRST STANDARDIZED NUCLEAR PLANTS IN THE U.S.

Callaway PlantCommercial Operation ± December 1984

19% of Ameren Missouri¶s Electricity

Wolf CreekCommercial Operation ± June 1985

17% of Kansas City Power & Light¶s Electricity




PLANT DESIGN FEATURES

These units are

licensed, designed

and built to

withstand:

� A worst-case seismic

event for our area

� Worst case natural

hazards including

flooding, tornados,

precipitation, etc.




PLANT DESIGN FEATURES

Emergency Safety Systems include

multiple emergency power sources:

� 3 power lines to the site

� 2 Emergency Diesel Generators (onsite)

� 4 Standby Diesel Generators (offsite)

Additional Emergency Safety

Features:

� Steam powered cooling water pump

with DC battery powered controls

system

� A 30-day cooling water supply storedon-site in a seismically designed

retention pond

� Severe Accident Management

Procedures developed for beyond

design events




Offsite Emergency Generators

Inside Containment

Plant Safety Features




NUCLEAR FUEL SAFEGUARDS

Nuclear fuel has three

barriers to protect the public:

1. Fuel pellets are sealed in

zirconium tubes2. Fuel assemblies are enclosed

in a steel pressure vessel that

is 8-inches thick

3. Reactor is enclosed in the

concrete containment structurethat is 4-feet thick




REACTOR VESSEL AND EL ASSEMBLY




ROBUST REACTOR CONTAINMENT AND

USED FUEL BUILDINGS




� Safety is our highest priority ± three types:

1. Nuclear ±

� Protect the public and our environment

2. Radiological ±

� Limit our employees¶ exposure to radiation

3. Industrial ±� Protect our employees from injury

SAFETY AND SECURITY




� Highly-trained personnel ± including Licensed Operators

� Nuclear Regulatory Commission inspectors work at each plant for daily inspections

� Stringent physical security barriers & armed guards protect theplant

� Nuclear Regulatory Commission approved RadiologicalEmergency Response Plan to protect the public should an event

occur

SAFETY AND SECURITY




EMERGENCY PLANNING FOR U.S.

NUCLEAR ENERGY FACILITIES

� 10-mile emergency planning zone (evacuation or sheltering); 50-mile monitoring zone for environment and food.

� Radiation monitoring by plant site, Nuclear Regulatory Commission(NRC) and state and local personnel from the site and surrounding

areas

� Decisions on public precautionary measures made by state or localauthorities based on recommendations from plant operator andNRC

� Emergency plan exercises in coordination with state, local, and

federal officials, evaluated by the NRC and FEMA




INSTITUTE of NUCLEAR POWER OPERATIONS (INPO)

HAS ISSUED IMMEDIATE ACTIONS FOR ALL U.S. NUCLEAR PLANTS

� Consistent with U.S. Nuclear industry principles:

± Nuclear safety undergoes constant examination

± Organizational learning is embraced

� The following actions are being taken:

± Verify the capability to mitigate conditions that result from beyond designbasis events committed to in licensing documents and Severe AccidentManagement Guidelines (SAMGs).

± Verify the capability to mitigate station blackout (SBO) conditions required bystation design is functional and valid.

± Verify the capability to mitigate internal and external flooding eventsrequired by station design.

± Perform walk downs and inspections of important equipment needed tomitigate fire and flood events to identify any potential for equipment functionto be lost during seismic events appropriate for the site.




U.S. NUCLEAR REGULATORY COMMISSION OTED

TO LAUNCH A TWO PRONGED RE IEW OF U.S.

NUCLEAR POWER PLANT SAFETY

� The Commission has created a task force made up of current senior

managers and former NRC experts with relevant experience.

� The task force will conduct a short term and long term analysis of

lessons that can be learned from this event.

� The task force will provide updates on the short term effort in 30, 60,and 90 days.

� The long term review will being no later than 90 days and will

determine if any permanent changes need to be made to NRC

regulations and programs within 6 months.




RESOURCES

� Ameren Missouri (AmerenMissouri.com)

� Wolf Creek Nuclear Operating Corporation (wcnoc.com)

� Nuclear Energy Institute (nei.org)

� United States Nuclear Regulatory Commission (nrc.gov)

� Ameren Missouri Customer Service Hotline

± 1.800.552.7583

� Ameren Missouri Communications

± 1.314.554.2182

± [email protected]

� KCP&L Media Hotline: 816-392-9455

� KCP&L Media E-Mail: [email protected]

MoPSC Nuclear Pres 033011

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