ML073520251
| ML073520251 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/07/2008 |
| From: | Olshan L NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | Duke Power Co |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| TAC MD3721, TAC MD3722, TAC MD3723, TAC MD3724, TAC MD3725, TAC MD3726 | |
| Download: ML073520251 (4) | |
Text
January 7, 2008 LICENSEE:
DUKE POWER COMPANY LLC (DUKE)
FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE)
SUBJECT:
SUMMARY
OF DECEMBER 6, 2007, MEETING TO DISCUSS STATUS OF TORNADO AND HIGH-ENERGY LINE BREAK (HELB) EFFORTS (TAC NOS.
MD3721, MD3722, MD3723, MD3724, MD3725, AND MD3726)
On December 6, 2007, the U.S. Nuclear Regulatory Commission (NRC) staff met with Duke (the licensee) to discuss the status of the Oconee tornado/HELB efforts. The handouts provided by the licensee during the meeting are available in the Agencywide Documents Access and Management System under accession number ML073410063. Enclosed is a list of the meeting attendees.
During the meeting the licensee proposed, and intends to commit, to install main steamline isolation valves (MSIVs) and to use these MSIVs in the strategies for mitigating tornados and HELBs. The licensee stated that the single failure criteria would not apply to these MSIVs because they will not be required for core protection, which is consistent with the current licensing basis for Oconee. The NRC staff stated that it would have to consult with other members of the NRC staff, and that a conference call with the licensee may be required, before the NRC staff could agree that the single failure criteria does not apply to these MSIVs.
The licensee proposed to install the MSIVs on Unit 1 in fall 2012, on Unit 2 in fall 2014, and on Unit 3 in fall 2013. The NRC staff stated that this schedule appeared to be reasonable.
The licensee stated that preliminary results from the TORMIS methodology are near the acceptance criteria. The NRC staff stated that it has not approved any previous use of TORMIS in which the results did not meet the acceptance criteria; however, if the licensee provided adequate justification, the NRC staff might approve, with extensive review, the use of TORMIS at Oconee even though the results did not meet the acceptance criteria.
/RA by RJervey/
Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encl: See next page
January 7, 2008 LICENSEE:
DUKE POWER COMPANY LLC (DUKE)
FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE)
SUBJECT:
SUMMARY
OF DECEMBER 6, 2007, MEETING TO DISCUSS STATUS OF TORNADO AND HIGH-ENERGY LINE BREAK (HELB) EFFORTS (TAC NOS.
MD3721, MD3722, MD3723, MD3724, MD3725, AND MD3726)
On December 6, 2007, the U.S. Nuclear Regulatory Commission (NRC) staff met with Duke (the licensee) to discuss the status of the Oconee tornado/HELB efforts. The handouts provided by the licensee during the meeting are available in the Agencywide Documents Access and Management System under accession number ML073410063. Enclosed is a list of the meeting attendees.
During the meeting the licensee proposed, and intends to commit, to install main steamline isolation valves (MSIVs) and to use these MSIVs in the strategies for mitigating tornados and HELBs. The licensee stated that the single failure criteria would not apply to these MSIVs because they will not be required for core protection, which is consistent with the current licensing basis for Oconee. The NRC staff stated that it would have to consult with other members of the NRC staff, and that a conference call with the licensee may be required, before the NRC staff could agree that the single failure criteria does not apply to these MSIVs.
The licensee proposed to install the MSIVs on Unit 1 in fall 2012, on Unit 2 in fall 2014, and on Unit 3 in fall 2013. The NRC staff stated that this schedule appeared to be reasonable.
The licensee stated that preliminary results from the TORMIS methodology are near the acceptance criteria. The NRC staff stated that it has not approved any previous use of TORMIS in which the results did not meet the acceptance criteria; however, if the licensee provided adequate justification, the NRC staff might approve, with extensive review, the use of TORMIS at Oconee even though the results did not meet the acceptance criteria.
/RA by RJervey/
Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encl: See next page Distribution:
PUBLIC J. Tatum, NRO RidsAcrsAcnwMailCenter LPL2-1 R/F RidsNrrDorl (TMcGinty)
RidsRgn2MailCenter (JMoorman)
RidsNrrDorlLpl2-1 (EMarinos)
D. Harrison, NRR T. Liu, NRR RidsNrrPMLOlshan (hard copy)
K. Manoly, NRR S. Campbell, EDO Rgn II RidsNrrLAMOBrien (hard copy)
R. Carroll, Rgn II RidsOgcRp D. Rich, Rgn II Accession Number: ML073520251 OFFICE NRR/LPL2-1/PM NRR/LPL3-1/LA NRR/LPL2-1/LA NRR/LPL2-1/A-BC NAME RJervey for LOlshan:nc BTully MOBrien JStang DATE 1/7/08 1/2/08 1 /3 /08 1/7/08 OFFICIAL RECORD COPY
MEETING ATTENDEES FROM DECEMBER 6, 2007, MEETING WITH DUKE POWER COMPANY LLC (DUKE)
TO DISCUSS THE STATUS OF THE OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3, TORNADO AND HIGH-ENERGY LINE BREAK EFFORTS NRC DUKE J. Tatum M. Glover T. McGinty J. Sumpter D. Harrison R. Freudenberger K. Manoly J. Fisicaro L. Olshan A. Park R. Carroll (by phone)
T. Brown J. Moorman (by phone)
S. Newman D. Rich (by phone)
G. McAninch Enclosure
Oconee Nuclear Station, Units 1, 2, and 3 cc:
Mr. Bruce H. Hamilton Vice President, Oconee Site Duke Power Company LLC 7800 Rochester Highway Seneca, SC 29672 Ms. Lisa F. Vaughn Associate General Counsel and Managing Attorney Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, North Carolina 28202 Manager, LIS NUS Corporation 2650 McCormick Dr., 3rd Floor Clearwater, FL 34619-1035 Senior Resident Inspector U.S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, SC 29672 Mr. Henry Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Dept. of Health and Env. Control 2600 Bull St.
Columbia, SC 29201-1708 Mr. Michael A. Schoppman Framatome ANP 1911 North Ft. Myer Dr.
Suite 705 Rosslyn, VA 22209 Mr. B. G. Davenport Regulatory Compliance Manager Oconee Nuclear Site Duke Energy Corporation ON03RC 7800 Rochester Highway Seneca, SC 29672 Mr. Leonard G. Green Assistant Attorney General NC Department of Justice P.O. Box 629 Raleigh, NC 27602 Mr. R. L. Gill, Jr.
Manager - Nuclear Regulatory Issues and Industry Affairs Duke Power Company LLC 526 S. Church St.
Mail Stop EC05P Charlotte, NC 28202 Division of Radiation Protection NC Dept of Environment, Health, & Natural Resources 3825 Barrett Dr.
Raleigh, NC 27609-7721 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, NC 28210 Mr. Henry Barron Group Vice President, Nuclear Generation and Chief Nuclear Officer P.O. Box 1006-EC07H Charlotte, NC 28201-1006 Mr. Charles Brinkman Director, Washington Operations Westinghouse Electric Company 12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Ms. Kathryn B. Nolan Senior Counsel Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, NC 28202