ML080720624
| ML080720624 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 03/13/2008 |
| From: | Siva Lingam NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | Christian D Virginia Electric & Power Co (VEPCO) |
| Lingam, Siva NRR/DORL 415-1564 | |
| References | |
| TAC MD5877, TAC MD5878 | |
| Download: ML080720624 (5) | |
Text
March 13, 2008 Mr. David A. Christian President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
SURRY POWER STATION, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING THE PROPOSAL TO INCREASE MAXIMUM SERVICE WATER TEMPERATURE LIMIT (TAC NOS. MD5877 AND MD5878)
Dear Mr. Christian:
By letter dated June 25, 2007, Virginia Electric and Power Company (the licensee) proposed technical specification (TS) changes to increase the maximum service water temperature limit from 95 °F to 100 °F for Surry Power Station, Unit Nos. 1 and 2. By letter dated November 14, 2007, the licensee provided responses to the Nuclear Regulatory Commission (NRC) staffs RAI. After reviewing these RAI responses, the NRC staff has determined that additional information is required to complete its evaluation.
The NRC staffs RAI is enclosed. The licensee is required to provide a response to the RAI within 30 days.
Sincerely,
/RA/
Siva P. Lingam, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-280 and 50-281
Enclosure:
RAI cc w/encl: See next page
- transmitted by memo dated OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/DSS/SBPB/BC NRR/LPL2-1/BC NAME SLingam MO=Brien DHarrison MWong DATE 3/11/08 3/13/08 3/6/08*
3/13/08
Enclosure REQUEST FOR ADDITIONAL INFORMATION REGARDING REVISION OF TECHNICAL SPECIFICATION TO INCREASE MAXIMUM SERVICE WATER TEMPERATURE LIMIT SURRY POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-280 AND 50-281 By application dated June 25, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML071840169), Virginia Electric and Power Company (the licensee) proposed a license amendment to change Surry Power Station, Unit Nos. 1 and 2 Technical Specifications (TSs). The proposed change increases the maximum service water temperature limit from 95 °F to 100 °F. By letter dated November 14, 2007 (ADAMS Accession Number ML073190271), the licensee provided responses to the Nuclear Regulatory Commission (NRC) staffs request for additional information (RAI). After reviewing these RAI responses, the NRC staff has determined that additional information is required to complete its evaluation.
To complete our review of the proposed TS changes, the NRC staff requests the licensees response to the following:
- 1.
The licensee stated in the license amendment request (Reference 1) and again in the response to RAI 1.a (Reference 2) that the component cooling water heat exchanger (CCHX) outlet temperature was constrained to 120 °F and that this is the same temperature that was used in the evaluations with a maximum service water (SW) temperature of 95 °F. The NRC staff is unable to verify that 120 °F was used as the CCHX outlet temperature for cooling component cooling water system safety-related loads. Please provide the technical basis for the 120 °F CCHX outlet temperature being acceptable for all design/licensing basis conditions.
- 2.
Updated Final Safety Analysis Report (UFSAR) Section 9.4.1.1.1, Component Cooling Water System, (Reference 3) states in part: Each heat exchanger is also capable of removing half of the heat load occurring four hours after a shutdown of one unit under conditions representing the maximum allowable cooldown rate. Is this still accurate with an SW temperature of 100 ºF? Please provide the technical basis.
- 3.
The response to RAI 4 (Reference 2) states that.... for a maximum SW temperature of 100 ºF, the diesel jacket outlet water temperature will not exceed 200 ºF.... with no explanation of how this temperature was determined. Please provide the technical basis for the diesel jacket outlet water temperature not exceeding 200 ºF.
References:
- 1. Letter from Gerald T. Bischof, Virginia Electric and Power Company, to U.S. Nuclear Regulatory Commission, Virginia Electric and Power Company, Surry Power Station Units 1 and 2, Proposed License Amendment Request, Increased Maximum Service Water Temperature Limit, dated June 25, 2007 (ADAMS Accession Number ML071840169).
- 2. Letter from Gerald T. Bischof, Virginia Electric and Power Company, to U.S. Nuclear Regulatory Commission, Virginia Electric and Power Company, Surry Power Station Units 1 and 2, Proposed License Amendment Request, Increased Maximum Service Water Temperature Limit, Request for Additional Information, dated November 14, 2007 (ADAMS Accession Number ML073190271).
- 3. Surry Power Station Updated Final Safety Analysis Report, Revision 39, September 27, 2007.
Surry Power Station, Units 1 & 2 cc:
Mr. David A. Christian President and Chief Nuclear Officer Virginia Electrical and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Ms. Lillian M. Cuoco, Esq.
Senior Counsel Dominion Resources Services, Inc.
Building 475, 5th Floor Rope Ferry Road Waterford, Connecticut 06385 Mr. Donald E. Jernigan Site Vice President Surry Power Station Virginia Electric and Power Company 5570 Hog Island Road Surry, Virginia 23883-0315 Senior Resident Inspector Surry Power Station U. S. Nuclear Regulatory Commission 5850 Hog Island Road Surry, Virginia 23883 Chairman Board of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23218 Dr. Robert B. Stroube, MD, MPH State Health Commissioner Office of the Commissioner Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Mr. Chris L. Funderburk, Director Nuclear Licensing & Operations Support Dominion Resources Services, Inc.
Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711