1. Fukushima I nuclear accident, March 11, 2011 What happened, why and a better design

2. Fukushima I Nuclear Power Plant Boiling Water reactor Second most common reactor type

3. Boiling Water Reactor

4. What Happened and Why Earthquake, magnitude 8.9-9 Tsunami, flooded the plant No power to the plant

5. Radioactive Contamination Measured as far away as 20 kilometres. Varying levels inside and around plant.

6. A New Reactor Design, Pebble Bed Reactors. Fuel contained in tennis ball sized pebbles Passive safety

7. References http://www.nrc.gov/reactors/bwrs.html http://en.wikipedia.org/wiki/Fukushima_I_nu clear_accidents http://en.wikipedia.org/wiki/Fukushima_I_nu clear_accidents Albert Koster (29 May 2009). "Pebble Bed Reactor - Safety in perspective". Nuclear Engineering International."Pebble Bed Reactor - Safety in perspective"