March 16th, 2011 – Tried dropping water from helicopters but only hit the target once

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From: Gibson, Kathy
Sent: Wednesday, March 16, 2011 10:46 PM
To: Sheron, Brian
Cc: Uhle, Jennifer
Subject: Re: MACCS run

It is being run beyond 50, sorry I should have said beyond. There are apparently difficulties because Nate Bixler is away teaching a MACCS class and there are questions about whether we have an appropriate spent fuel model (our models were high density and these are low density pools).

However Charlie and Randy Gauntt are working it. Randy is clear we need something tomorrow and I passed on to Charlie and him Jennifer’s specifications for the runs (3 reactors + 3 pools, and 3 reactors + 6 pools over 4 days).

I saw on the news that they tried dropping water from helicopters but because they were so high up they only hit the target once. But they are bringing 11 water-cannon truck to the site. Also 180 staff are working rotating shifts.

Also, Jennifer, it doesn’t appear that Jason talked to Sandia or Richard today. We called Jason but were unable to contact him tonight, so I will check in the morning.

From: Sheron, Brian
To: Gibson, Kathy
Cc: Uhle, Jennifer
Sent: Wed Mar 16 21:21:06 2011
Subject: RE: MACCS run

Why are we only running it out to 50 miles. I was told Rascal calculates out to 50 miles and they already ran the RASCAL analysis in the IRC. I would think we would want to run MACCS out to further distances to see what the projected doses are and whether our (U.S.) recommendation that U.S. citizens in Japan evacuate out to 50 miles remains vali, or if we should increase the recommended evacuation zone.

From: Gibson, Kathy
Sent: Wednesday, March 16, 2011 3:09 PM
To: Sheron, Brian
Subject: MACCS run

Sandia is doing a MACCS run out to 50 miles at Jennifer’s request. Charlie is on the phone with

Sandia to ensure they are using the “right” source term considering multiple reactors and spent fuel pools.

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