ML062400423
| ML062400423 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/28/2006 |
| From: | Scott Shaeffer NRC/RGN-II/DRP/RPB2 |
| To: | |
| References | |
| 2-2006-0003 | |
| Download: ML062400423 (1) | |
Text
Morning Report Date: AUG 28, 2006 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II Licensee/Facility:
Notification:
2-2006-0003 08/28/2006 MR Number:
SOUTHERN NUCLEAR OPERATING CO., INC.
[1] W-4-LP, [2] W-4-LP Date:
Vogtle Call from SRI Waynesboro, Georgia 050-00424 050-00425 Dockets:
UNIT 2 REACTOR TRIP DUE TO LOSS OF REACTOR COOLANT PUMP
Subject:
This Morning Report provides information concerning a Unit 2 reactor trip that occurred on August 27, 2006. While operating at 99.7% of full rated thermal power, the number 4 reactor coolant pump (RCP) tripped. Since the reactor was operating above the P-8 setpoint, an automatic reactor trip was generated on single reactor coolant system (RCS) loop low flow. Auxiliary feedwater (AFW) automatically started on steam generator low-low level as expected. The reactor was stabilized and is currently being maintained in Mode 3 (Hot Standby) using AFW and condenser steam dumps.
The licensee is conducting troubleshooting to determine the cause of the RCP number 4 trip. If the licensee determines that the RCP motor must be replaced, the unit will likely be taken to Mode 5 (Cold Shutdown) to facilitate the repair which would be in excess of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
Discussion:
Contact:
Email:
Phone No:
Org:
SHAEFFER, SCOTT M SMS@nrc.gov (404) 562-4520 R2