Was Fukushima a boiling water reactor?

The Fukushima Daiichi reactors are GE boiling water reactors (BWR) of an early (1960s) design supplied by GE, Toshiba and Hitachi, with what is known as a Mark I containment. Reactor power was 460 MWe for unit 1, 784 MWe for units 2-5, and 1100 MWe for unit 6.

Was Fukushima a light water reactor?

First commissioned in 1971, the plant consists of six boiling water reactors. These light water reactors drove electrical generators with a combined power of 4.7 GWe, making Fukushima Daiichi one of the 15 largest nuclear power stations in the world.

What were the effects of the 2004 tsunami in Japan?

The tsunami inundated about 560 km 2 and resulted in a human death toll of about 19,000 and much damage to coastal ports and towns, with over a million buildings destroyed or partly collapsed. Eleven reactors at four nuclear power plants in the region were operating at the time and all shut down automatically when the earthquake hit.

What is the tsunami height of the Daiichi power plant?

The original design basis tsunami height was 3.1 m for Daiichi based on assessment of the 1960 Chile tsunami and so the plant had been built about 10 metres above sea level with the seawater pumps 4 m above sea level. The Daini plant was built 13 metres above sea level.

What happened to Japan’s 2011 earthquake report on tsunamis and earthquakes?

A report from the Japanese government’s Earthquake Research Committee on earthquakes and tsunamis off the Pacific coastline of northeastern Japan in February 2011 was due for release in April, and might finally have brought about changes.

What is the maximum amplitude of a tsunami?

The maximum amplitude of this tsunami was 23 metres at point of origin, about 180 km from Fukushima. In the last century there have been eight tsunamis in the region with maximum amplitudes at origin above 10 metres (some much more), these having arisen from earthquakes of magnitude 7.7 to 8.4, on average one every 12 years.