The facts regarding the article of Nihon Keizai Newspaper (December 20) page 42 "Units 1 and 2 - misunderstanding in the status of cooling" is as follows.
[Point 1]
·The Emergency Cooling System of unit 2 of Fukushima Daiichi Nuclear Power Plant was actually in operation for a while, but it turned out on December 19 that TEPCO thought it was not in operation.
[facts]
·We confirmed that at 4:36 pm of March 11 we could not confirm the reactor water level and the status of water injection, but we did not misunderstand the status of the Reactor Core Isolation Cooling System as written in the article.
[Point 2]
·On the other hand, another cooling system of unit 1 called the "isolation condenser" was regarded as "operational", according to the Managing Director Mr. Komori. No one on the site or the head office knew that the isolation condenser of unit 1 will automatically stop in the case of station blackout.
[facts]
·We are continuously looking into this matter.
[Point 3]
·The ventilation of units 1 and 2 cannot be conducted simultaneously.
[facts]
·The ventilation system is installed in each unit independently and ventilation of both units can be conducted simultaneously.
[Point 4]
·However, at 2:55 am on March 12, the activation of The Emergency Cooling System of unit 2 was confirmed by a worker, and TEPCO decided to concentrate on the reactor of unit 1, whose pressure was getting high.
[facts]
·We were planning to conduct ventilation of both units from the beginning.
© Tokyo Electric Power Company Holdings, Inc.
