Operators Respond to a Significant Natural Disaster A Personal - - PowerPoint PPT Presentation

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Browns Ferry Operators Respond to a Significant Natural Disaster A Personal Perspective... 2016 National REP Matt Rasmussen Conference Operations Superintendent Browns Ferry NPP Browns Ferry Nuclear Plant 3 GE BWR Type 4 Reactors o

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2016 National REP Conference

Browns Ferry Operators Respond to a Significant Natural Disaster

A Personal Perspective...

Matt Rasmussen Operations Superintendent Browns Ferry NPP

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3 GE BWR Type 4 Reactors
All with Mark 1 Containments
Commercial Operation
Uni1 1 – August 1,1974
Unit 2 – March 1, 1975
Unit 3 – March 1, 1977
~3400 MWe Total Generation
~1400 Employees

Located on the Tennessee River Near Athens, Alabama

Browns Ferry Nuclear Plant

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April 27, 2011

All three units at full power
Severe weather was anticipated in the

Tennessee Valley area

One (of eight) Emergency DG was out
f service for scheduled maintenance
Severe weather events began early in

the day

Other TVA nuclear sites and corporate
ffices were also affected by severe

weather throughout the day

0142 PM CDT WED APR 27 2011

PROB OF 2 OR MORE TORNADOES: > 95% PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES: > 95% PROB OF 10 OR MORE SEVERE WIND EVENTS: > 95% PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS: > 95% PROB OF 10 OR MORE SEVERE HAIL EVENTS: > 95% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES: > 95% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS: > 95%

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Your Main Title

Your Sub Points

92 TORNADO WARNINGS 31 SEVERE THUNDERSTORM WARNINGS 7 FLASH FLOOD WARNINGS 63 ACTUAL TORNADOS 1 TORNADO EMERGENCY

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CONTE 2013

Lightning Strikes Over Time US Navy Satellite Surveillance

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CONTE 2013

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CONTE 2013

Your Text Here

Third Round: March of the Supercells

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Hackleburg, Alabama

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CONTE 2013

Phil Campbell, Alabama

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Lawrence County, Alabama

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Tanner, Alabama

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Take Aways...

BFN operators demonstrated that continuing

training at BFN prepared them to respond to the events of April 27, 2011, under very difficult circumstances.

Greater emphasis on consideration of severe

weather and loss of offsite power as multi-unit events during simulator training

Additionally, it was noted that due to time

constraints simulator scenarios rarely progressed to the point of cooling the reactor down to cold conditions