Two Of Three Power Systems Out At TEPCO Onagawa Plant

More bad news for TEPCO. Just out from NHK: Two of three power systems out at TEPCO Onagawa plant. Hopefully this means the plant still has power. More as we see it.

File:Onagawa Nuclear Power Plant.jpg

From Wikipedia:

The Onagawa Nuclear Power Plant is a nuclear power plant located on a 1,730,000 m2 (432 acres) site[1] in Onagawa in the Oshika District and Ishinomaki city, Miyagi Prefecture, Japan. It is managed by the Tohoku Electric Power Company. It was the most quickly constructed nuclear power plant in the world.[citation needed]

The Onagawa-3 unit was used as a prototype for the Higashidori Nuclear Power Plant.[citation needed]

The plant conforms fully to ISO 14001, a set of international environmental management standards. The plant's waste heat water leaves 7 degrees Celsius higher than it came in and is released 10 meters under the surface of the water, in order to reduce adverse effects on the environment.[citation needed]

All the reactors were constructed by Toshiba.[2]

Unit 1

Since November 11, 2006 this unit has been shut down due to the result of a test.[citation needed]

Unit 2

  • May 2006 it was confirmed that a pipe was leaking due to debris damage.
  • June 7, 2006 Difficulties with pressure control prompted further inspections.
  • July 7, 2006 METI and the Nuclear and Industrial Safety Agency determined that the plant's performance was not satisfactory.[citation needed]

Unit 3

  • July 7, 2006 Due to pipe integrity concerns the reactor was shut down.
  • November 25, 2006 Following repairs the reactor was restarted.
  • March 11, 2011 2011 T?hoku earthquake damaged the turbines after a fire broke out and was shut down.