ML052850385
| ML052850385 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 09/29/2005 |
| From: | Rosalyn Jones Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TSC 2003-03 | |
| Download: ML052850385 (4) | |
Text
RONALD A JONES Duke Vice President MPowere
.Oconee Nuclear Site Duke Power ONOI VP / 7800 Rochester Hwy.
Seneca, SC 29672 864 885 3158 864 885 3564 fax September 29, 2005 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Subject:
Oconee Nuclear Station Docket Nos. 50-269, -270, and -287 Withdrawal of License Amendment Request for Reactor Building Auxiliary Cooler Isolation Circuitry, Technical Specification 3.3.29 Technical Specification Change (TSC) Number 2003-06 On August 26, 2004, Duke Energy Corporation (Duke) submitted a License Amendment Request (LAR) regarding an addition to the Technical Specifications (TS) for new TS 3.3.29, Reactor Building Auxiliary Cooler (RBAC) Isolation Circuitry. This circuitry isolates non-safety portions of the Low Pressure Service Water (LPSW) system piping inside containment that supply the RBACs to eliminate potentially damaging waterhammers. This modification is one of several being implemented in support of resolving GL 96-06 issues.
During modification design and scoping, Duke adopted the conservative position that this circuitry aids in the mitigation of a loss of offsite power (LOOP) event, thereby meeting the definition of 'primary success path' as defined by criterion 3 of 10 CFR 50.36.
Criterion 3 of 10 CFR 50.36 is defined as follows:
A structure, system, or component (SSC) that is part of the primary success path and which functions or actuates to mitigate a Design Basis Accident or Transient that either assumes the failure of or presents a challenge to the integrity of a fission product barrier.
The primary success path for LOOP mitigation is the Emergency Power System as defined in UFSAR Chapter 15. The RBAC Isolation circuitry provides waterhammer prevention mitigation. Waterhammer events are not DBA discussed in UFSAR Chapter 6 or 15.
Therefore, the circuitry does not J
www. dukepower. corn
U. S. Nuclear Regulatory Commission September 29, 2005 Page 2 meet criterion 3 of 10CFR50.36 as defined above.
As a result, Duke requests that TSC 2003-06 be withdrawn.
Please address any questions to B. G. Davenport at (864) 885-3044.
Very r ly Yours, R.
ones Site ice President Oconee Nuclear Station
U. S. Nuclear Regulatory Commission September 29, 2005 Page 3 xc:
W. D. Travers U. S. Nuclear Regulatory Commission Regional Administrator, Region II Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, GA 30303 L. N. Olshan, NRC Project Manager (ONS)
U. S. Nuclear Regulatory Commission Mail Stop 0-14H25 Washington, DC 20555-0001 S. Peters, NRC Project Manager U. S. Nuclear Regulatory Commission Mail Stop 0-14H25 Washington, DC 20555-0001 M. C. Shannon Senior Resident Inspector (ONS)
U. S. Nuclear Regulatory Commission Oconee Nuclear Site H. Porter, Director Division of Radioactive Waste Management Bureau of Land & Waste Management Department of Health & Environmental Control 2600 Bull Street Columbia, SC 29201
U. S. Nuclear Regulatory Commission September 29, 2005 Page 4 R. A. Jones, being duly sworn, states that he is Vice President, Oconee Nuclear Site, Duke Energy Corporation, that he is authorized on the part of said Company to sign and file with the U. S. Nuclear Regulatory Commission this revision to the Facility Operating License Nos. DPR-38, DPR-47, DPR-55; and that all the statements and matters set forth herein are true and correct to the best of his knowledge.
R.
e We, ice President Oco e clear Site brbed and sworn to before me this 4 L
day of 5 Ws 1,2005 Notary Public My Commission Expires:
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