ML022070248
| ML022070248 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, McGuire  |
| Issue date: | 07/26/2002 |
| From: | Martin R NRC/NRR/DLPM/LPD2 |
| To: | Tuckman M Duke Energy Corp |
| References | |
| TAC MB4502, TAC MB4503, TAC MB4504, TAC MB4505 | |
| Download: ML022070248 (4) | |
Text
July 26, 2002 Mr. M. S. Tuckman Executive Vice President Nuclear Generation Duke Energy Corporation 526 South Church St Charlottte, NC 28202
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 AND MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION - REVIEW OF DUKE TOPICAL REPORT DPC-NE-2009, REVISION 2 (TAC NOS. MB4502, MB4503, MB4504 AND MB4505)
Dear Mr. Tuckman:
The Nuclear Regulatory Commission is reviewing your application dated February 28, 2002, entitled Topical Report DPC-NE-2009, Revision 2 - Updates to Chapters 2, 4, and 5 and has identified a need for additional information as identified in the Enclosure. These issues were discussed with your staff on July 24, 2002. Please provide a response to this request within 45 days of receipt of this letter so that we may complete our review.
Sincerely,
/RA/
Robert E. Martin, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413, 50-414, 50-369 and 50-370
Enclosure:
Request for Additional Information cc w/encl: See next page
July 26, 2002 Mr. M. S. Tuckman Executive Vice President Nuclear Generation Duke Energy Corporation 526 South Church St Charlottte, NC 28202
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 AND MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION - REVIEW OF DUKE TOPICAL REPORT DPC-NE-2009, REVISION 2 (TAC NOS. MB4502, MB4503, MB4504 AND MB4505)
Dear Mr. Tuckman:
The Nuclear Regulatory Commission is reviewing your application dated February 28, 2002, entitled Topical Report DPC-NE-2009, Revision 2 - Updates to Chapters 2, 4, and 5 and has identified a need for additional information as identified in the Enclosure. These issues were discussed with your staff on July 24, 2002. Please provide a response to this request within 45 days of receipt of this letter so that we may complete our review.
Sincerely,
/RA/
Robert E. Martin, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413, 50-414, 50-369 and 50-370
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
PUBLIC B. Martin ACRS THuang PDII-1 Reading C. Hawes R. Haag, RII D. McCain OGC J. Nakoski C. Patel Accession Number: ML022070248 OFFICE PDII-1/PM PDII-1/PM PDII-1/LA PDII-1/SC NAME RMartin CPatel CHawes JNakoski DATE 7/25/02 7/25/02 7/25/02 7/25/02 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST APPLICABLE TO REVISIONS TO TOPICAL REPORT DPC-NE-2009, REVISION 2 CATAWBA NUCLEAR STATION, UNITS 1 AND 2 MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 DUKE ENERGY CORPORATION The staff has reviewed Duke Energy Corporationss submittal dated Febuary 28, 2002, Topical Report DPC-NE-2009, Revision 2 - Updates to Chapters 2, 4, and 5" and has identified a need for the following additional information.
1.
Section 5.3 of DPC-NE-2009, Revision 2, states that the WRB-2M critical heat flux (CHF) correlation will be used for the robust fuel assembly (RFA) design, whereas the BWU-N CHF correlation will be applied for the non-mixing vane span of the RFA fuel.
A.
Discuss the applicability of the BWU-N correlation to the RFA non-mixing vane span. The discussion should include whether the RFA fuel design is within the range of the test assemblies data base used to develop the BWU-N correlation.
The test assemblies data base parameters include the fuel diameter, pitch, hydraulic diameters, grid design (grid thickness, height, and vane design), grid spacing, and heated length.
B.
The WRB-2M correlation described in WCAP-15025-P-A, Modified WRB-2 Correlation, WRB-2M, for Predicting Critical Heat Flux in 17 x 17 Rod Bundles with Modified LPD Mixing Vane Grids, is applicable to the 17 x 17 fuel with 0.374 inch outer diameter rods and modified low pressure drop grids, with or without modified intermediate flow mixing grids. Is the WRB-2M correlation not applicable to the RFA non-mixing vane span? Why is the BWU-N correlation used?
C.
Discuss how two different correlations are applied to the different spans of a fuel assembly. Is the VIPRE-01 code programmed to automatically perform the switch in the correlations? Has verification and validation been done to ensure correctness of VIPRE-01 in the correlation switch?
2.
For the transition cores with co-existence of the RFA and Mark-BW fuel designs, Section 5.7 of Revision 2 of the report, states that a transition core departure from nucleate boiling ratio penalty for the RFA design is determined using the 8 channel RFA/Mark-BW transition core model for initial transition reload cycles, and using the 75 channel model for subsequent cycles where the RFA fuel composes greater than 80 percent of the assemblies in the core.
Explain why it is necessary to use different core models depending on whether the RFA fuel composes greater than 80 percent of the assemblies.
McGuire Nuclear Station Catawba Nuclear Station cc:
Ms. Lisa F. Vaughn Legal Department (PBO5E)
Duke Energy Corporation 422 South Church Street Charlotte, North Carolina 28201-1006 County Manager of Mecklenburg County 720 East Fourth Street Charlotte, North Carolina 28202 Mr. Michael T. Cash Regulatory Compliance Manager Duke Energy Corporation McGuire Nuclear Site 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Anne Cottingham, Esquire Winston and Strawn 1400 L Street, NW.
Washington, DC 20005 Senior Resident Inspector c/o U. S. Nuclear Regulatory Commission 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210 Dr. John M. Barry Mecklenburg County Department of Environmental Protection 700 N. Tryon Street Charlotte, North Carolina 28202 Mr. Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Licensing Duke Energy Corporation 526 South Church Street Charlotte, North Carolina 28201-1006 Elaine Wathen Lead REP Planner Division of Emergency Management 116 West Jones Street Raleigh, North Carolina 27603-1335 Mr. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745