ML100750364

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Email from J. Gray to S. Burns, Subj: Items
ML100750364
Person / Time
Site: Crystal River 
Issue date: 10/08/2009
From: Gray J
Office of Nuclear Reactor Regulation
To: Stephen Burns
NRC/OGC
References
FOIA/PA-2010-0010
Download: ML100750364 (1)


Text

Gray, Joseph From:

Gray, Joseph Sent:

Thursday, October 08, 2009 10:00 AM To:

Burns, Stephen

Subject:

RE: items Staff is still exploring Crystal River containment problem but "delamination" concern is that the containment concrete appears to have cracked the whole way around and may "peel off" in layers internally. This is apparently both a structural problem and a containment integrity (containing radmat) problem. Mallett did not

,,aive much of an explanation but the staff is workinq hard to assess.

Outside of Scope From: Burns, Stephen Sent: Thursday, October 08, 2009 9:47 AM To: Gray, Joseph

Subject:

Re: items Outside of Scope What's the significance of the Crystal River event?

lutside of Scope From: Gray, Joseph To: Burns, Stephen Sent: Thu Oct 08 09:38:56 2009

Subject:

Items develooments on a couple of thinas:

Outside of Scope (3) The Crystal River containment cracking is being characterized as "delamination" -- not good. Staff is checking other B&W reactors (Oconee-no problem; ANO-1-no similar problem; TMI & Davis Besse-checks still to be done) and Mallett wants to put together a special inspection.

0" Outside of Scope 1