ML082340106
| ML082340106 | |
| 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: | Anderson C, Allan Barker, Barrett R, Beckner W, Borchardt R, Scott Burnell, Clifford J, Jocelyn Craig, Dyer J, Charemagne Grimes, Howe A, Imbro E, 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 NRC/EDO, NRC/FSME, Office of New Reactors, Office of Nuclear Reactor Regulation, Office of Nuclear Security and Incident Response, NRC/OCFO, Office of Public Affairs, Office of Nuclear Regulatory Research, NRC Region 1, NRC/RGN-III |
| SECY RAS | |
| References | |
| 06-849-03-LR, 50-271-LR, Entergy-Intervenor-NEC-JH_57, RAS M-223 | |
| Download: ML082340106 (6) | |
Text
-4kS NrP-2,7, NEC-JH_57 Rick Ennis - Fwd: VY Steam Dryer Crack Info Paae 11 From:
Rick Ennis M' 2 -
To:
ýA-4tlan Wang; Allan Barker; Allen Howe; Anthony McMurtray; Brian Sheron; Cheng-Ih Wu; Christopher Grimes; David Terao; Diane Screnci; Donna Skay; Eric Leeds; Gene Imbro; James Clifford; Jim Dyer; John Craig; John Jolicoeur; Kamal Manoty; Neil Sheehan; Richard Barrett; Richard Borchardt; Scott Burnell; Tae Kim; Terrence Reis; Thomas Scarbrough; William Beckner; William Ruland Date:
4116104 1:31PM
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 DOCKETED USNRC August 12, 2008 (11:00am)
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Fwd: VY Steam Dryer Crack Info 4/16/04 1:31PM Rick Ennis 11 RXE@nrc.gov Recipients kpl-po.KPDO CJA CC (Cliff Anderson)
DLPI CC (David Pelton)
NAS (Neil Sheehan) owfl-po.OWFN_DO SRB3 (Scott Burnell) owf2_po.OWFNW_.DO ACM2 (Anthony McMurtray)
CIWI (Cheng-Ih Wu)
DMS6 (Donna Skay)
DXT (David Terao)
EXI (Gene Ixnbro)
KAM (Kamal Manoly)
RJB3 (Richard Barrett)
RWB 1 (Richard Borchardt)
TGS (Thomas Scarbrough)
TXR (Terrence Reis) owf4_po.OWFNDO ABW (Alan Wang)
AGHI (Allen Howe)
ARB3 (Allan Barker)
BWS (Brian Sheron)
CIG (Christopher Grimes)
ETL (Eric Leeds)
JED2 (Jim Dyer)
JWC (James Clifford)
JWCI (John Craig)
TJK3 (Tae Kim)
WDB (William Beckner)
WHIR (William Ruland)
Action Delivered Opened Opened Opened Opened Delivered Opened Delivered Opened Opened Opened Opened Opened Opened Opened Opened Delivered Opened Opened Opened Opened Opened Opened Opened Opened Opened Opened Opened Delivered Date & Time 04/16/04 01:3 1PM 04/16104 01:3 1PM 04/19/04 07:13AM 04/16104 01:53PM 04116104 01:43PM 04/16/04 01:31PM 04116/04 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 04116/04 01:40PM 04/16104 01:32PM 04/16/04 01:56PM 04/16104 01:31PM owf5_po.OWFN_DO
FC:\\TEMP\\GW}O0001.TMP Page 21 JRJ1 (John Jolicoeur)
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Opened 04/19/04 12:16PM Delivered 04/16/04 01:3 1PM 04/16104 01:31PM 04/16/04 01:3IPM 04/16/04 01:31PM 04/16/04 01:31PM Date & Time 04/16/04 01:3 1PM Route Size 578 No None Yes Standard No None No Standard Immediate Delivered & Opened
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Rick Ennis -Fwd: VY Steam Dryer Crack Info Page 1 From:
Cliff Anderson To:
Rick Ennis Date:
4/16/04 12:59PM
Subject:
Fwd: VY Steam Dryer Crack Info fyi
l Rir~k F~nni*
V Y Steain Dryer Crack Info Paae1R II VY Steam n-Pr (-rqrk Info Paqe I I
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 12:11PM VY Steam Dryer Crack Info FYI:
The attached write-up summarizes what we know about the VY steam dryer cracks to date.
Ray
U 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.