ML15112A267
| ML15112A267 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/07/1998 |
| From: | Labarge D NRC (Affiliation Not Assigned) |
| To: | Mccollum W DUKE POWER CO. |
| References | |
| GL-96-06, GL-96-6, TAC-M96840, TAC-M96841, TAC-M96842, NUDOCS 9810090413 | |
| Download: ML15112A267 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20545001 October 7, 1998 p
Mr. W. R. McCollum Vice President, Oconee Site Duke Energy Corporation P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - RESPONSE TO GENERIC LETTER 96-06 FOR OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (TAC NOS. M96840, M96841, AND M96942)
Dear Mr. McCollum:
Duke Energy Corporation (DEC/the licensee) responded to Generic Letter (GL) 96-06, "Assurance of Equipment Operability and Containment Integrity During Design-Basis Accident Conditions," by letters dated January 28, April 15, June 30, and August 1, 1997, and May 28, and September 22, 1998. The submittals address the issues of waterhammer, two-phase flow, and thermally induced pressurization of piping runs penetrating the containment for the Oconee Nuclear Station, Units 1, 2, and 3.
In the January 28, 1997, submittal, DEC indicated that 28 piping penetrations (total for all three units) and one piping segment in the decay heat drop line of each unit were susceptible to thermally induced pressurization. In the June 30, 1997, submittal, DEC indicated that, as a long-term resolution to this issue for the containment penetrations, relief valves, check valves, insulation, or other devices would be installed. In order to complete our review of the submittals, the staff requests that DEC provide a specific description of the modifications to these piping segments. If the modifications involve heat transfer and/or structural analyses of the pipe segments, the following information for these segments is needed.
- Provide the applicable design criteria for the piping and the valves. Include the required load combinations.
- Provide a drawing of the piping run between the isolation valves. Include the lengths and thicknesses of the piping segments and the type and thickness of the insulation.
- Provide the maximum-calculated temperature and pressure for the pipe run. Describe, in detail, the method used to calculate these pressure and temperature values. This should include a discussion of the heat transfer model used in the analysis and the basis for the heat transfer coefficients used in the analysis.
PDR ADOCK 05000269 P
PDR MC K*O 22
W.
October 7, 1998 As discussed with your staff, please provide this information by December 31, 1998.
Sincerely, Original signed by:
David E. LaBarge, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page Distribution:
Docket File DLaBarge PUBLIC OGC PD 11-2 Rdg.
ACRS JZwolinski LPlisco, RII G. Hammer COgle, RII K. Manoly B. Wetzel DOCUMENT NAME: G:\\OCONEE\\OCO96841.RAI To receive a copy of this document, indicate in the box: "C" = Copy without attachment/enclosure "E" = Copy with attachm ntlenclosure "N" = No copy OFFICE PDII' PDll-21p k Pp1,
NAME DLErge:cn LBerry 1 81r DATE tDl 1 98
/798' 1 /198
-OFFICIAL RECORD COPY
W. R. McCollum
-2 As discussed with your staff, please provide this information by December 31, 1998.
Sincerely, David E. LaBarge, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects - III Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page
Oconee Nuclear Station cc:
Mr. Paul R. Newton Mr. J. E. Burchfield Legal Department (PBO5E)
Compliance Manager Duke Energy Corporation Duke Energy Corporation 422 South Church Street Oconee Nuclear Site Charlotte, North Carolina 28201-1006 P. 0. Box 1439 Seneca, South Carolina 29679 J. Michael McGarry, III, Esquire Winston and Strawn Ms. Karen E. Long 1400 L Street, NW.
Assistant Attorney General Washington, DC 20005 North Carolina Department of Justice Mr. Rick N. Edwards P. 0. Box 629 Framatome Technologies Raleigh, North Carolina 27602 Suite 525 1700 Rockville Pike L. A. Keller Rockville, Maryland 20852-1631 Manager - Nuclear Regulatory Licensing Manager, LIS Duke Energy Corporation NUS Corporation 526 South Church Street 2650 McCormick Drive, 3rd Floor Charlotte, North Carolina 28201-1006 Clearwater, Florida 34619-1035 Mr. Richard M. Fry, Director Senior Resident Inspector Division of Radiation Protection U. S. Nuclear Regulatory North Carolina Department of Commission Environment, Health, and 7812B Rochester Highway Natural Resources Seneca, South Carolina 29672 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Regional Administrator, Region II U. S. Nuclear Regulatory Commission Mr. Steven P. Shaver Atlanta Federal Center Senior Sales Engineer 61 Forsyth Street, S.W., Suite 23T85 Westinghouse Electric Company Atlanta, Georgia 30303 5929 Carnegie Blvd.
Suite 500 Virgil R. Autry, Director Charlotte, North Carolina 28209 Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 County Supervisor of Oconee County Walhalla, South Carolina 29621