From: Boger, Bruce,
Sent: Monday, March 14, 2011 6:48 AM
To: Thorp, John
Cc: Brown, Frederick
Subject: Tsunami Fact Sheet
I seem to recall that OpE developed a tsunami fact sheet? Should we dust it off?
Nuclear Power Plant Design for Natural Phenomena
The NRC regulations require that nuclear power plants be designed to withstand the effects of natural phenomena such as earthquakes, tornadoes, hurricanes, floods, and tsunami. Nuclear power plant design reflects consideration of the most severe natural phenomena that have been historically reported for the plant site and surrounding area.
The design also provides sufficient margin for the limited accuracy, quantity, and period of time in which the historical data have been accumulated. Additionally, the design considers the appropriate combinations of the effects of the natural phenomena with the effects of normal and accident conditions at the plant.
Each nuclear power plant is, therefore, designed to a specific magnitude or strength of a natural phenomenon that is appropriate for the plant site and surrounding area. For example, a nuclear power plant in Texas or Florida (where earthquakes are of small magnitude and rarely occur) would not be designed for the same earthquake loading as a nuclear power plant in California (where earthquakes are more severe and common).
The attached table shows some examples of design values of natural phenomena for the Waterford Steam Electric Station, Unit 3 (Waterford-3), the River Bend Station (River Bend), South Texas Project, Units 1 and 2 (STP), Wolf Creek Generating Station, Unit 1 (Wolf Creek), Diablo Canyon Nuclear Power Plant ,Units 1 and 2 (Diablo Canyon), Duane Arnold Energy Center (Duane Arnold), and Grand Gulf Nuclear Station, Unit 1 (Grand Gulf).
- March 31st, 2011 – RE: Why are there no emergency diesels in U.S. nuclear power plants? (enformable.com)
- March 23rd, 2011 – Full list of data NRC was seeking in regards to electrical system design at Japanese Nuclear Power Plants (enformable.com)
- March 31st, 2011 – Six US Nuclear Power Plants under intensive review after Fukushima – Why these six? (enformable.com)
- April 2011 – Risk versus Concern – Public Health Messaging of the Fukushima Daiichi Nuclear Power Plant Incident (enformable.com)
- TEPCO Tsunami Assessment for Nuclear Power Plants in Japan (enformable.com)
- April 4th, 2011 – All but one permanent monitoring stations around Fukushima Daiichi initially knocked out (enformable.com)
- What is the difference between radioactivity and radiation? We should encourage everyone to think about nuclear power (enformable.com)
- March 14th, 2011 – GI-199 Questions – Due to uncertainties in the data NRC sending letter to US Plants (enformable.com)