ML053010390
| ML053010390 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 04/16/2004 |
| From: | Richard Ennis Office of Nuclear Reactor Regulation |
| To: | Allan Barker, Barrett R, Beckner W, Borchardt R, Scott Burnell, Clifford J, Jocelyn Craig, Dyer J, Charemagne Grimes, Howe A, Imbro G, John Jolicoeur, Kim T, Leeds E, Kamal Manoly, Anthony Mcmurtray, Reis T, Ruland W, Thomas Scarbrough, Diane Screnci, Neil Sheehan, Sheron B, Skay D, Terao D, Wang A, Wu C Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2004-0369 | |
| Download: ML053010390 (6) | |
Text
I Rick Ennis - Fwd: VY Steam Dryer Crack Info Page 1 1 From:
Rick Ennis to To:
t-ftlan Wang; Allan Barker; Allen Howe; Anthony McMurtray; Brian Sheron; Cheng-lh Wu; Christopher Grimes; David Terao; Diane Screnci; Donna Skay; Eric Leeds; Gene Imbro; James Clifford; Jim Dyer; John Craig; John Jolicoeur; Kamal Manoly; Neil Sheehan; Richard Barrett; Richard Borchardt; Scott Burnell; Tae Kim; Terrence Reis; Thomas Scarbrough; William Beckner; William Ruland Date:
4116/04 1:31 PM
Subject:
Fwd: VY Steam Dryer Crack Info Attached is a little more detail on the steam dryer cracking at Vermont Yankee.
CC:
Cliff Anderson; David Pelton
I CA\\TEMP\\GW)00001.TMP Paqe 1 I C:\\TEMP\\GW}O0001.TMP Page 1 I Mail Envelope Properties (40801878.B4F: 15: 20516)
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Fwd: VY Steam Dryer Crack Info 4/16/04 1:31PM Rick Ennis I/
RXE@nrc.gov Recipients kpl-po.KPDO CJA CC (Cliff Anderson)
DLP1 CC (David Pelton)
NAS (Neil Sheehan)
Action Delivered Opened Opened Opened Opened owfl_po.OWFN_DO SRB3 (Scott Burnell)
Delivered Opened owf2_po.OWlN_DO ACM2 (Anthony McMurtray)
CIW1 (Cheng-Ih Wu)
DMS6 (Donna Skay)
DXT (David Terao)
EXI (Gene Imbro)
KAM (Kamal Manoly)
RJB3 (Richard Barrett)
RWB 1 (Richard Borchardt)
TGS (Thomas Scarbrough)
TXR (Terrence Reis) owf4_po.OWFNDO ABW (Alan Wang)
AGH1 (Allen Howe)
ARB3 (Allan Barker)
BWS (Brian Sheron)
CIG (Christopher Grimes)
EJL (Eric Leeds)
JED2 (Jim Dyer)
JWC (James Clifford)
JWC1 (John Craig)
TJK3 (Tae Kim)
WDB (William Beckner)
WHR (William Ruland)
Delivered Opened Opened Opened Opened Opened Opened Opened Opened Delivered Opened Opened Opened Opened Opened Opened Opened Opened Opened Opened Opened Date & Time 04/16/04 01:31PM 04/16/04 01:3 1PM 04/19/04 07:13AM 04/16/04 01:53PM 04/16/04 01:43PM 04/16/04 01:31PM 04/16/04 01:32PM 04/16/04 01:31PM 04/16/04 01:58PM 04/17/04 10:14AM 04/16/04 03:12PM 04/16/04 01:48PM 04/21/04 01:46PM 04/19/04 07:30AM 04/16/04 02:20PM 04/16/04 01:34PM 04/16/04 01:3 1PM 04/16/04 02:02PM 04/19/04 07:24AM 04/16/04 01:3 1PM 04/16/04 04:44PM 04/16/04 01:35PM 04/16/04 01:43PM 04/19/04 09:09AM 04/16/04 01:32PM 04/16/04 01:40PM 04/16/04 01:32PM 04/16/04 01:56PM owf5_po.OWFN_DO Delivered 04/16/04 01:3 1PM
I CATEMP\\GWID000U.MP Page 2-1 I C:\\TEMP\\GWIOOOO1.TMP Paae 2 I JRJ1 (John Jolicoeur)
Opened 04/19/04 12:16PM Post Office kpl-po.KP.DO owfl_po.OWFN_DO owf2_po.OWFNDO owf4_po.OWFNDO owf5.po.OWFNDO Delivered 04/16/04 01:3 1PM 04/16/04 01:3 1PM 04/16/04 01:3 1PM 04/16/04 01:31PM 04/16/04 01:31PM Route Files Mail MESSAGE Options Auto Delete:
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Rick Ennis - Fwd: VY Steam Drye Crck Info
-Page From:
Cliff Anderson Q-:
To:
Rick Ennis Date:
4/16/04 12:59PM
Subject:
Fwd: VY Steam Dryer Crack Info fyi
I Rick Ennis - VY Steam Dryer Crack Info Pacje 1 1 From:
To:
James Wiggins; Date:
Subject:
Raymond Lorson A. Randolph Blough; Brian Holian; Cliff Anderson; David Pelton; Hubert J. Miller; Richard Crlenjak; Wayne Lanning 4/16/04 12:11 PM VY Steam Dryer Crack Info FYI:
The attached write-up summarizes what we know about the VY steam dryer cracks to date.
Ray
While performing visual inspections of the reactor vessel steam dryer, Entergy and General Electric personnel identified several indications on both the interior and exterior surfaces of the dryer:
Two external cracks were identified on outer plenum vertical welds (the longest crack was approximately 3 inches in length). The licensee plans to grind out, repair and install additional supports to reinforce these welds; Two internal cracks were identified in the drain channel weld. The longest crack was 14 inches in length. These cracks are inaccessible for repair. The licensee (based on input from GE) believes that they can demonstrate that operation with these cracks is acceptable In addition to the cracks noted above, multiple axial indications were identified on the internal surface of the curved end plate of the dryer vane bank. The licensee has not determined whether these indications are cracks or manufacturing anomalies. The licensee (based on input from GE) believes that they can demonstrate that operation with these indications is acceptable.
The licensee is considering a press release on this topic and has indicated that the cracks are in low-stress, low-steam flow, areas of the dryer, and not in the areas affected at the EPU plants.
Region I reviewed the licensee's steam dryer inspection activities during a scheduled, routine ISI inspection and is continuing to monitor this situation. Similar external weld cracks were identified and repaired earlier this spring at Nine Mile Unit 2.