March 15th, 2011 – Fukushima Daiichi Units Degrading – Zirconium Fire at Reactor 4 SFP – Reactor 2 Possible Reactor Vessel Breach & Ex-Vessel Core Reaction

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From: Franovich, Mike
Sent: Tuesday, March 15, 2011 12:06 AM
To: Nieh, Ho
Cc: Warnick, Greg; Warnick, Greg; Kock, Andrea; Zorn, Jason
Subject: Fukushima Daiichi Units Degrading

Ho,
* I called WCO to give him a heads-up and details. The Chairman is in the Ops center on the line with the US Ambassador in Tokyo.

* Unit 2 appears to have gone into a possible reactor vessel breach situation. The fuel was not cooled for hours. The primary containment is likely breached after an explosion near the torus. We may have had an ex-vessel core reaction.

* Unit 4 has a dry spent fuel pool. This unit was in a refueling outage with a hot core offloaded to the pool. It appears a zirconium fire may be in progress.

* DOE has dispatch its rad assessment (RAP) team and will in Japan in seven hours.

* Suggested WCO get with the Chairman to discuss where he may help the Chairman in a divide and conquer approach. The Chairman has no relief where our other operations are being handled by shift/rotation for the ET.

Mike

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