RC-06-0196, Special Report (Spr) 2006-005
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| ML063050168 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 10/27/2006 |
| From: | Archie J South Carolina Electric & Gas Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| RC-06-0196, SPR 2006-005 | |
| Download: ML063050168 (2) | |
Similar Documents at Summer | |
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Category:Letter type:RC
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Summer Unit 1 Steam Generator Nozzle to Safe End Dissimilar Metal Weld Inspection Requirements2012-07-31031 July 2012 Attachment 5 - Westinghouse LTR-PAFM-12-86 Flaw Tolerance Evaluation to Support Re-Categorization of V.C. 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C. Summer - ECCS Evaluation Model Revisions Report, Addresses the Effect of Using a Finer Break Spectrum2006-11-15015 November 2006 V. C. Summer - ECCS Evaluation Model Revisions Report, Addresses the Effect of Using a Finer Break Spectrum RC-06-0196, Special Report (Spr) 2006-0052006-10-27027 October 2006 Special Report (Spr) 2006-005 RC-05-0076, Operating License, Special Report (Spr 2005-001)2005-05-19019 May 2005 Operating License, Special Report (Spr 2005-001) ML0727008492005-01-31031 January 2005 Caldon Experience in Nuclear Feedwater Flow Measurement ML0406307712004-02-25025 February 2004 Transmittal of Semi-Annual Fitness-for-Duty Report for Period Ending December 31, 2003 2022-02-18 |
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Jeffrey B. Archie Vice President, Nuclear Operations 803.345.4214 A SCANA COMPANY October 27, 2006 RC-06-0196 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Dear Sir or Madam:
Subject:
VIRGIL C. SUMMER NUCLEAR STATION (VCSNS)DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 SPECIAL REPORT (SPR) 2006-005 South Carolina Electric & Gas Company is submitting this Special Report pursuant to the requirements of Technical Specifications 6.9.2 and Fire Protection Procedure (FPP)-024, Enclosure 6.1.1. The report is providing information on a transient that occurred on October 15, 2006 which led to the fire suppression system at VCSNS being declared inoperable for a period of approximately 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 19 minutes.Following a start of the Electric Fire Pump at 0239 hours0.00277 days <br />0.0664 hours <br />3.95172e-4 weeks <br />9.09395e-5 months <br /> for a scheduled system test, the fire service header pressure was observed to drop. Test personnel attempted to secure the pump with the Stop Button; however, when the button was released both the Electric Fire Pump and the associated Diesel Fire Pump started on the low pressure condition.
The start of both pumps, with a partially depressurized line, caused a pressure transient in the system. Operations personnel responding to the transient secured both of the fire pumps at 0245 hours0.00284 days <br />0.0681 hours <br />4.050926e-4 weeks <br />9.32225e-5 months <br />.Investigation found minor damage to several plant fire suppression systems and that the initial transient had occurred because of a major break in the underground yard fire service pipe supplying the Warehouse A & B sprinkler systems. The damaged portion of fire service piping was isolated and the system returned to service (system piping re-pressurized and both pumps restored to operable status) at 0504 hours0.00583 days <br />0.14 hours <br />8.333333e-4 weeks <br />1.91772e-4 months <br />.Damaged portions of the plant fire suppression systems were provided with compensatory measures, repaired, and restored to operable status on October 16 and 17 in accordance with FPP-024. The damaged section of underground pipe supplying the warehouses was repaired and returned to service on October 20.SCE&G I Virgil C. Summer Nuclear Station -P. 0. Box 88
- Jenkinsville, South Carolina 29065 o T (803) 345.5209
- www.scana.com Document Control Desk RC-06-0196 Page 2 of 2 Should you have any questions, please call Mr. Robert Sweet at (803) 345-4080 at your convenience.
SVe y yours,/ rey B. WArchsi CJM/JBA/cm
- c. K. B. Marsh S. A. Byrne N. S. Cams J. H. Hamilton R. J. White W. D. Travers R. E. Martin K. M. Sutton NRC Resident Inspector INPO Records Center NSRC CER (C-06-3392)
File (818.08)DMS (RC-06-0196)
NUCLEAR EXCELLENCE
-A SUMMER TRADITION!