March 11th, 2011 – Fukushima Daini Information

From: Pannier, Stephen
Sent: Friday, March 11, 2011 11:33 AM
To: Thomas, Eric
Subject: Fukushima Daini information

Today at 2:46PM, turbines and reactors of Tokyo Electric Power Company‘s Fukushima Daini Nuclear Power Station Units 1 to 4 (Boiling Water Reactor,
rated output 1,100 Megawatts) that had been operating at rated power automatically shutdown due to the Miyagiken-oki Earthquake.

Currently, reactor water level for Units 1 to 4 is maintained by injecting water into the reactors by the Reactor Core Isolation Cooling System.

The reactors are maintained at a subcritical condition.

For Unit 1, the emergency core cooling system automatically started up due to increase in the reactor containment pressure assumed to be caused by leakage of reactor coolant in the reactor containment.

Hence, at 5:35PM, it was decided that a specific incident stipulated in Article 10, Clause 1 of the Act on Special Measures Concerning Nuclear Emergency Preparedness *1 has occurred.

Impact to safety and external environment: Water level to cool the irradiated nuclear fuel in the reactor core is
maintained at this moment.

Indication of the monitoring posts installed in the periphery of the power station is no different from usual and thus no radiation impact to the
external environment is confirmed at this moment.

We will continue to monitor in detail the possibility of discharge of radioactive material from exhaust stacks and coolant water discharge canal.

About author
Our FOIA archives feature collected and sorted FOIA documents, and are sub-categorized by event, topic, importance, and type.Email chains are extracted and published according to date.Press releases are archived by date of publication.Presentation materials and pdfs are summarized and displayed in whole.Each post is titled with the date of transmission of that particular FOIA combined with the subject of the message.
Read More About , , , , , , , , , ,
Submit your comment

Please enter your name

Your name is required

Please enter a valid email address

An email address is required

Please enter your message

Enformable © 2016 All Rights Reserved

More in FOIA, NRC
Fire at Tohoku Elec Onagawa nuclear plant
March 11th 2011 – Fire at Tohuku Electric Onagawa Plant

From: Breskovic, Clarence Sent: Friday, March 11,2011 5:31 AM To: Breskovic, Clarence Subject: Japan: media reports government has decided to declare a nuclear power emergency situation Fire at Tohoku Elec Onagawa nuclear plant...