ML12005A016
| ML12005A016 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 08/24/2011 |
| From: | NRC/RGN-II |
| To: | |
| References | |
| FOIA/PA-2011-0357 | |
| Download: ML12005A016 (2) | |
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R2 IRC Wednesday, August 24, 2011 1:05 PM PN Distribution PNO-II-11-005A (North Anna) - Update North AnnaPNO-II-11-005A.docx 1
L.
August 24, 2011 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-11-11-005A This preliminary notification constitutes EARLY notice of events of possible safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by Region II staff (Atlanta, Georgia) on this date.
Facilities:
Virginia Electric and Power Company North Anna Power Station, Units 1 and 2 Mineral, Virginia Docket/License: 50-338/NPF-4, 50-339/NPF-7 Calvert Cliffs Nuclear Power Plant DC Cook Nuclear Power Plant Hope Creek Generating Station Limerick Generating Station Oyster Creek Nuclear Generating Station Palisades Nuclear Plant Peach Bottom Atomic Power Station Salem Nuclear Generating Station Shearon Harris Nuclear Plant Surry Power Station, Units 1 and 2 Susquehanna Power Station Three Mile Island Nuclear Station Licensee Emergency Classifications:
FD Notification of Unusual Event Z
Alert
[I Site Area Emergency LI General Emergency LI Not Applicable Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event Notification of Unusual Event
SUBJECT:
UPDATE - EMERGENCY DECLARATIONS DUE TO SEISMIC EVENT This updated preliminary notification supplements information in PNO-11-1 1-005, which documented an ALERT declaration at North Anna Units 1 and 2 due to a seismic event on August 23, 2011.
At 2:22 p.m. (EDT) on August 23, 2011, NRC had entered the Monitoring Mode following the declaration of an ALERT at the North Anna Power Station Units 1 and 2, located in Virginia, at 2:03 p.m. (Reference PNO-II-1 1-005, dated August 23, 2011). Additionally, a number of plants declared a Notice of Unusual Event (NOUE) due to seismic activity at the site. Plants declaring NOUEs, included Peach Bottom, Three Mile Island, Susquehanna and Limerick in Pennsylvania; Salem, Hope Creek and Oyster Creek in New Jersey, Calvert Cliffs in Maryland, Surry in Virginia, Shearon Harris in North Carolina and D.C. Cook and Palisades in Michigan.
Offsite power to North Anna Units 1 and 2 was restored on August 23, 2011, and the Emergency Diesel Generators were secured and placed in standby. North Anna downgraded from the ALERT to an NOUE emergency declaration at 11:16 a.m. on August 24, 2011. North Anna Unit 1 has commenced cooldown to cold shutdown. North Anna Unit 2 plans to initiate cooldown to cold shutdown upon Unit 1 reaching cold shutdown.
All other plants have exited the NOUE and no significant issues have been identified.
The NRC Region II Incident Response Center exited the monitoring mode at 11:40 a.m.; however, the staff continues to monitor plant activities, including direct on-site verification. The information presented herein is current as of 12:15 p.m., August 24, 2011.
This preliminary notification is issued for information only. All affected States have been notified by the NRC.
CONTACTS:
Joel Munday 404-997-4600 Glenn Dentel 610-337-5233