ML041470443
| ML041470443 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 05/25/2004 |
| From: | Sean Peters NRC/NRR/DLPM/LPD2 |
| To: | Jamil D Duke Energy Corp |
| Peters S, NRR/DLPM, 415-1842 | |
| References | |
| TAC MB7014, TAC MB7015 | |
| Download: ML041470443 (4) | |
Text
May 25, 2004 Mr. D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB7014 AND MB7015)
Dear Mr. Jamil:
By letter dated November 25, 2002, as supplemented by letters dated November 13, 2003, and December 16, 2003, you submitted an application for amendment of the Technical Specifications (TS) for the Catawba Nuclear Station (Catawba), Units 1 and 2. This amendment would revise the TS for five ventilation systems and the reactor building and containment penetrations. The U. S. Nuclear Regulatory Commission technical staff has reviewed the application and has determined that additional information is required, as identified in the Enclosure.
We discussed these issues with your staff on May 24, 2004. Your staff indicated that you would attempt to provide your response at the earliest opportunity.
Please contact me at (301) 415-1842, if you have any questions on these issues.
Sincerely,
/RA/
Sean E. Peters, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414
Enclosure:
As stated cc w/encl: See next page
May 25, 2004 Mr. D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB7014 AND MB7015)
Dear Mr. Jamil:
By letter dated November 25, 2002, as supplemented by letters dated November 13, 2003, and December 16, 2003, you submitted an application for amendment of the Technical Specifications (TS) for the Catawba Nuclear Station (Catawba), Units 1 and 2. This amendment would revise the TS for five ventilation systems and the reactor building and containment penetrations. The U. S. Nuclear Regulatory Commission technical staff has reviewed the application and has determined that additional information is required, as identified in the Enclosure.
We discussed these issues with your staff on May 24, 2004. Your staff indicated that you would attempt to provide your response at the earliest opportunity.
Please contact me at (301) 415-1842, if you have any other questions on these issues.
Sincerely,
/RA/
Sean E. Peters, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION:
PUBLIC OGC DClarke MHart PDII-1 R/F ACRS SPeters LBrown SCoffin LPlisco, RII RHaag, RII EForrest ADAMS Accession: ML041470443 OFFICE PDII-1/PM PDII-1/SC NAME SPeters SCoffin DATE 5/24/04 5/25/04 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION DUKE POWER COMPANY CATAWBA NUCLEAR STATION, UNITS 1 AND 2 DOCKET NOS. 50-413 AND 50-414 The Nuclear Regulatory Commission (NRC) staff has reviewed the licensees submittal dated November 25, 2002, as supplemented by letters dated November 13, 2003, and December 16, 2003, regarding proposed changes to the Technical Specifications for five ventilation systems, and the reactor building and containment penetrations. The NRC staff has identified the following information that is needed to enable the continuation of its review.
In the Duke Power amendment request for use of mixed oxide (MOX) fuel lead test assemblies (LTAs), by letter dated September 23, 2003, you indicated that you plan to insert the 4 MOX LTAs into the Catawba Unit 1 core during Cycle 16, with Unit 2 as a backup if necessary. Considering that plan for the current license amendment which requests full implementation of an alternative source term for both units at Catawba, please evaluate all affected design basis accident dose analyses assuming that the 4 MOX LTAs are in a Catawba core. Accidents which assume release from the fuel, such as the loss of coolant accident, control rod ejection, and locked reactor coolant pump rotor are of concern for the use of MOX LTAs.
RAIs on Filter Test Criteria:
1.
In your application, you proposed changing the criteria for in-place testing of the Catawba, Unit 2 High Efficiency Particulate Air (HEPA) filters (Annulus Ventilation, Auxiliary Building Exhaust, and Fuel Building Ventilation) from 0.05% penetration to 1%
penetration and re-labeling the test criteria penetration and system bypass.
TS 5.5.11a states that this value will be the penetration and system bypass when tested in accordance with Regulatory Guide (RG) 1.52, Revision 2 and ANSI N510-1980 at the flow rate specified... The purpose of the test is to verify the integrity of the HEPA filter assembly to assure that there are no gaps or pathways that allow the effluent to circumvent the filter media either around the media or through the media. RG 1.52, Revision 2 specifies a criteria of 0.05% for bypass flow during in place testing which has been attainable by Catawba in the past and by most other licensees. Please provide a justification for non-compliance with the NRC staff position expressed in the regulatory guide. A discussion of the significance of the in-place leak test is provided in ANSI N510-1975 Appendix B. Section B-2 pertains to HEPA filters.
2.
The NRC staff has a similar question with respect to the carbon adsorber filters. You proposed changing the criteria for in-place testing the Catawba, Unit 2 carbon adsorber filters (Annulus Ventilation, Auxiliary Building Exhaust, and Fuel Building Ventilation) from 0.05% penetration to 1% penetration and re-labeling the test criteria penetration and system bypass. TS 5.5.11b states that this value will be the penetration and system bypass when tested in accordance with Regulatory Guide 1.52, Revision 2 and ANSI N510-1980 at the flow rate specified... The purpose of the test is to verify the integrity of the carbon adsorber filter assembly to assure that there are no gaps or pathways that allow the effluent to circumvent the filter media either around the media or through the media. The RG specifies a criteria of 0.05% for bypass flow during in place testing which has been attainable by Catawba and most other licensees in the past.
Please provide a justification for non-compliance with the NRC staff position expressed in the RG 1.52, Revision 2. A discussion of the significance of in-place leak test is provided in ANSI N510-1975 Appendix B. Section B-3 pertains to carbon adsorbers.
3.
You also proposed to change the flow rate for the Auxiliary Building Filtered Exhaust from 30,000 cfm to 60,000 cfm and to note that this flow rate is for two fans. The NRC staff understands that each filter will be tested individually and that the flow through the filter assuming a single failure of the other train would be approximately 37,000 cfm.
Since a single failure would be the potential condition during a design basis accident, please provide justification for testing the filter at a flow rate of 30,000 cfm instead of the expected flow rate of 37,000 cfm. This question applies to in-place testing of both the HEPA and carbon adsorber filters.
Catawba Nuclear Station cc:
Lee Keller, Manager Regulatory Compliance Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Ms. Lisa F. Vaughn Duke Energy Corporation Mail Code - PB05E 422 South Church Street P.O. Box 1244 Charlotte, North Carolina 28201-1244 Anne Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, DC 20005 North Carolina Municipal Power Agency Number 1 1427 Meadowwood Boulevard P. O. Box 29513 Raleigh, North Carolina 27626 County Manager of York County York County Courthouse York, South Carolina 29745 Piedmont Municipal Power Agency 121 Village Drive Greer, South Carolina 29651 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 NCEM REP Program Manager 4713 Mail Service Center Raleigh, North Carolina 27699-4713 North Carolina Electric Membership Corp.
P. O. Box 27306 Raleigh, North Carolina 27611 Senior Resident Inspector U. S. Nuclear Regulatory Commission 4830 Concord Road York, South Carolina 29745 Henry Porter, Assistant Director Division of Waste Management Bureau of Land and Waste Management Dept. of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. R. L. Gill, Jr., Manager Nuclear Regulatory Issues and Industry Affairs Duke Energy Corporation 526 South Church Street Mail Stop EC05P Charlotte, North Carolina 28202 Saluda River Electric P. O. Box 929 Laurens, South Carolina 29360 Mr. Peter R. Harden, IV, Vice President Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210 Mary Olson Director of the Southeast Office Nuclear Information and Resource Service 729 Haywood Road, 1-A P. O. Box 7586 Asheville, North Carolina 28802
Catawba Nuclear Station cc:
Mr. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Richard M. Fry, Director Division of Radiation Protection N. C. Dept. of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721