March 15th, 2011 – NRC Calculated Fukushima Unit 4 SFP Boil-Off Decay Times 20 – 90 – 365 Days

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From:Schaperow, Jason
Sent:Tuesday, March 15, 2011 11:09 AM
To:’[email protected]
Cc:Tinkler, Charles; Chang, Richard
Attachments:•.SS100_20110315_16131631 .pdf

Just to confirm our telecom that we had a few minutes ago…

Fukushima Daiichi unit 4 may be having a spent fuel pool meltdown.

Fukushima Daiichi unit 4 has a full core offload in its spent fuel pool.

We are planning to give to the NRC Chairman information on spent fuel pool boil-off times (and maybe spent fuel heatup times).

We need you to do boil-off calculations just like the attached, but for a full core offload into the pool. We need it for 3 decay times (20 days, 90 days, and 365 days). Also, if you could get it to run until the level reaches core mid-plane that would be even better.

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