March 11th, 2011 – NRC speaker at RIC claimed Japanese plants more seismically robust than US plants

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From: Beasley, Benjamin
Sent: Tuesday, March 15, 2011 7:30 AM
To: Bensi, Michelle
Subject: RE: Japan EQ

It is much too early to tell, but if I must guess, I think the issue will center around an extended station blackout.

Apparently the reactors shutdown and the diesels were providing power for ECCS until the tsunami hit. Our regulations require 8 hours of battery capability. The plants get into trouble pretty quickly after the batteries run out.

That is what seems to have happened at Fukushima.

Ben

From: Bensi, Michelle
Sent: Monday, March 14, 2011 7:46 AM
To: Beasley, Benjamin
Subject: RE: Japan EQ

Hi Ben,

I am sure you have seen the news and the implications for the nuclear power plants in Japan. How do you think this will affect GI-1 99?

I assume the NRC will want to learn from the experiences in Japan as they related to seismic robustness of the existing fleet of plants.

Have you heard anything in this area?

I am glad to hear the ACRS meeting went well.

Shelby

From: Beasley, Benjamin
Sent: Friday, March 11, 2011 3:01 PM
To: Bensi, Michelle
Subject: RE: Japan EQ

I am not keeping up with it. There may be a problem at one of the plants but I have not had time today to inquire. (The ACRS briefing went well.)

BB

From: Bensi, Michelle
Sent: Friday, March 11, 2011 1:57 PM
To: Beasley, Benjamin
Subject: Japan EQ

Hi Ben,
Are you all getting any news on the situation at the plant in Japan?

I imagine this will bring a lot more importance to GI-199, especially in light of a claim made by an NRC speaker at the RIC claiming that Japanese plants are more seismically robust than US plants.

-Shelby

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