Letter Sequence Request |
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MONTHYEARML0224201352002-08-26026 August 2002
Meeting with Utility to Discuss Tornado Mitigation, Auxiliary Building, Flooding & Extension of Khu Completion Time for Oconee Plant
Project stage: Meeting
ML0224604882002-09-18018 September 2002
Duke Energy Company, Summary August 26 and 27, 2002, Meeting to Discuss Tornado Mitigation Flooding in the Auxiliary Building and Temporary Extension of Completion Times for Keowee Hydro Units
Project stage: Meeting
ML0305203072003-02-17017 February 2003
Emergency Plan Implementing Procedures Manual Volume C Revision 2003-02
Project stage: Request
ML0326713342003-09-12012 September 2003
Supplement to the License Amendment Request for Temporary Extensions to the Completion Times for One or Two Keowee Hydro Units Inoperable, Technical Specification Change No. 2002-05
Project stage: Supplement
ML0333500072003-12-0101 December 2003
Meeting Notice with Duke Energy Corporation Completion Time for the Keowee Hydro Units
Project stage: Request
ML0335201902003-12-16016 December 2003
Meeting Handout to Discuss Amendment to Temporarily Extend Completion Time of Keowee Hydro Units
Project stage: Meeting
ML0401300662004-01-12012 January 2004
Summary of December 16, 2003, Meeting to Discuss the Amendment Request to Temporarily Extend the Completion Times for the Keowee Hydro Units
Project stage: Meeting
ML0421104512004-07-29029 July 2004
Plant Shutdown Required by Technical Specifications - Oconee Units 1, 2 and 3
Project stage: Request
ML0422905462004-08-0505 August 2004
License Amendment Nos. 339, 341, and 340, Extended the Completion Times for Keowee Hydro Units to Allow Additional Time for Maintenance and Upgrades
Project stage: Other
ML0422501652004-08-0505 August 2004
Technical Specifications, Extended the Completion Times for Keowee Hydro Units to Allow Additional Time for Maintenance and Upgrades
Project stage: Other
ML0428101302004-10-0404 October 2004
Correction to Amendment Nos. 339, 341 and 340
Project stage: Other
2003-02-17
[Table View] |
Plant Shutdown Required by Technical Specifications - Oconee Units 1, 2 and 3| ML042110451 |
| Person / Time |
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| Site: |
Oconee 
(DPR-038, DPR-055) |
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| Issue date: |
07/29/2004 |
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| From: |
Carroll R
NRC/RGN-II/DRP/RPB1 |
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| To: |
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| References |
|---|
| MR-II-04-0009 |
| Download: ML042110451 (1) |
|
Text
Morning Report Date: JUL 29, 2004 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II Licensee/Facility:
Notification:
2-2004-0009 07/29/2004 MR Number:
DUKE ENERGY CORP.
[1] B&W-L-LP, [2] B&W-L-LP, [3] B&W-L-LP Date:
Oconee Call from Licensee Seneca, South Carolina 050-00269 050-00270 050-00287 Dockets:
PLANT SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS - OCONEE UNITS 1,2, AND 3
Subject:
This is an update to the 10 CFR 50.72 notification dated July 28, 2004, regarding loss of the switchyard (SWYD) 125 VDC battery chargers, which resulted in the initiation of a Technical Specification (TS) 3.0.3 required shutdown of all three Oconee units. Preliminary investigation indicates that rain water intrusion caused a fault in an AC power transfer switch, causing the loss of both AC sources to the switchyard 125 VDC battery chargers. The licensee promptly initiated additional actions to prevent a loss of offsite power.
The TS 3.0.3 required Unit shutdowns were terminated at approximately 12:05 p.m. after: (1) the fault was isolated; (2) both AC battery charger sources were restored; and (3) SWYD battery cell voltages were returned to their minimum TS required limits. The licensee is currently performing a root cause investigation. Information indicates that the emergency power systems remained operable during the incident.
Regional Action: The resident inspectors responded to the site and continue to monitor the licensee's recovery actions and investigation of the event. Region II plans to conduct additional detailed inspection of the licensee's activities and corrective actions.
Discussion:
Contact:
Email:
Phone No:
Org:
CARROLL, ROBERT E REC1@nrc.gov (404) 562-4511 R2