ML100750264
| ML100750264 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/06/2009 |
| From: | Brannen Adkins NRC/RGN-II |
| To: | Ayres D NRC/RGN-II |
| References | |
| FOIA/PA-2010-0010 | |
| Download: ML100750264 (2) | |
Text
Ayres, David From:
Adkins, Brannen Sent:
Tuesday, October 06, 2009 11:19 AM To:
Ayres, David
Subject:
RE: CR3 Containment Concrete Crack Do you think this could impact my visit to Crystal River?
From: Ayres, David Sent: Tuesday, October 06, 2009 10:52 AM To: Adkins, Brannen
Subject:
FW: CR3 Containment Concrete Crack Ouch! This may affect the SGR schedule....
From: Gody, Tony Sent: Tuesday, October 06, 2009 10:38 AM To: Ayres, David
Subject:
FW: CR3 Containment Concrete Crack FYI....
From: Plisco, Loren Sent: Tuesday, October 06, 2009 8:18 AM To: Croteau, Rick; Gody, Tony; Ogle, Chuck
Subject:
FW: CR3 Containment Concrete Crack From: Wert, Leonard Sent: Tuesday, October 06, 2009 8:17 AM To: Plisco, Loren; Reyes, Luis; McCree, Victor Cc: Munday, Joel; Kennedy, Kriss; Sykes, Marvin
Subject:
FYI: CR3 Containment Concrete Crack The licensee believes that the crack in the concrete on the CR3 containment exists all the way around the containment and all the way up and down (360 degrees, full height of containment). This is per VP discussion with Marvin Sykes. Crack was found while making approx 25 ft X 25 ft concrete cut for the SGR project (liner is still intact). Crack is about 1/2 inch wide and 10 inches in from outside edge of concrete - running around the containment - located just at the layer of horizonal tendons. Licensee is assessing and evaluating implications (polar crane support, S/G lift device support, as well as operability of containment). No indication of liner problems. We have good inspection coverage due to SGR project inspections ongoing, including Rich Chou onsite. We're also looking into OE on similar cracks at other facilities. VP said he did get some questions from offsite. We informed Joey and Roger yesterday. Licensee considering contacting press but has not yet done so. Calling EDO coordinator, currently drafting EDO daily note. Reactor is not defueled (delays in getting cavity sealed..)
Len
4-Davis, Bradley From:
ODonohue, Kathleen Sent:
Tuesday, October 06, 2009 12:01 PM To:
Masters, Anthony; Jackson, Rahsean; Davis, Bradley; Lizardi, Jonathan; Abbott, Coleman; Heher, Elaine; Seat, Jamin
Subject:
FW: Crystal River containment crack FYI - currently Operating side has not asked for any assistance Picture to follow
-zehz V'fYVo2zoze Branch Chief, Construction Inspection - Branch 2 404-562-0554 NEW EMAIL: Kathleen.Odonohue@NRC.GOV From: Blake, Jerome Sent: Tuesday, October 06, 2009 10:14 AM To: Chou, Rich; Carrion, Robert Cc: Ogle, Chuck; Moorman, James; ODonohue, Kathleen
Subject:
Crystal River containment crack Rich, Bob, During conversation with Chuck Ogle about the Crystal River containment cracking issue, I remembered an issue concerning Crystal River from construction days.
After the containment was completed and post-tensioned, the containment dome spontaneously de-laminated.
(aloud "BANG" was heard, and subsequent investigation found the de-lamination problem.) At that time Gilbert and Associates, (the site Architect/Engineer) determined that re-bar hooks meant to couple the outer and inner layers of rebar in the dome had been left off the rebar detail plans and therefore had not been installed. I believe the details of the dome problem were documented in a 50.55(e) report.
This morning I heard that the licensee is saying that the containment crack appears to be full height of the containment and 360-degrees. It seems to me that the current problem sounds like an issue similar to the problem that resulted in de-lamination of the dome - re-bar hooks connecting inner and outer layers of rebar were omitted from the detail plans and never installed.
I don't know if the licensee would remember the earlier issue, but I thought that you should know about the history of the containment dome so that you can see if the licensee and contractors are factoring in that part of the history of the containment in their root cause analyses.
Jerry 1