Monday, March 21, 2011
The Fukushima power plants were required by regulators to withstand a certain height of tsunami. At the Daiichi plant the design basis was 5.7 metres (18.7 feet) and at Daini this was 5.2 metres (17.1 feet).
Tepco has now released tentative assessments of the scale of the tsunami putting it at over 10 metres (over 32.8 feet) at Daiichi and over 12 metres (over 39.4 feet) at Dainii.
The plant sites were inundated, causing the loss of residual heat removal systems at both sites as well as emergency diesel generators at Daiichi.
Posted by Michele Kearney at 12:56 PM