ML16141B148
| ML16141B148 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/20/1997 |
| From: | Berkow H NRC (Affiliation Not Assigned) |
| To: | DUKE POWER CO. |
| Shared Package | |
| ML16141B151 | List: |
| References | |
| TAC-M96316, NUDOCS 9702240380 | |
| Download: ML16141B148 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 20, 1997 Mr. J. W. Hampton Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
EVALUATION OF THE THIRD TEN-YEAR INTERVAL INSERVICE INSPECTION PROGRAM PLAN REQUEST FOR RELIEF NO. 96-04, KEOWEE HYDRO STATION UNITS 1 AND 2 FOR OCONEE NUCLEAR STATION, UNIT 1 (TAC NO. M96316)
Dear Mr. Hampton:
By letter dated August 5, 1996, you submitted Request for Relief No. 96-04 from certain requirements of the American Society of Mechanical Engineers (ASME) Code,Section XI, 1989 Edition for Oconee Nuclear Station Unit 1 under the provisions of 10 CFR 50.55a(a)(3)(ii). The relief to the Code-required preservice examination is related to mechanical systems at the upgraded Keowee Hydro Station Units 1 and 2.
The upgrade of the Keowee Project was initiated in order to improve Keowee systems in response to NRC Electrical Distribution Systems Functional Inspections and Self-Initiated Technical Audits that were performed from 1992 to 1994. Several Keowee mechanical systems were upgraded to Piping Class F as a result of the Keowee Project. Upgrading Keowee mechanical systems to Piping Class F resulted in application of additional, more restrictive requirements, such as those contained in the ASME Code, Section-XI and 10 CFR Part 50, Appendix B' ASME Section XI requires retention of documentation of preservice examinations performed on mechanical systems in accordance with the applicable construction codes. Since the Keowee mechanical systems were not originally constructed under these requirements, little or no records of preservice examinations exist for these systems. In order to provide records it would be necessary to perform a new preservice examination of the affected Keowee systems and, thus, obtain the Code-required documentation.
The NRC staff has reviewed your submittal and, as described in the enclosure, concludes that the Code examination requirements are impractical for the seven Keowee systems included in Request for Relief No. 96-04, for Oconee Unit 1.
The examinations that were performed during the construction of the systems, the reliable operation of the station for the past 24 years, and the implementation of the Inservice Inspection program in November 1995 provide reasonable assurance of adequate structural integrity and safety. The staff concludes that the upgraded piping systems at the Keowee hydro station can 9702240380 970220 PDR ADOCK 05000269 P
Mr. J. W. Hampton
-2 perform adequately under the ASME Code,Section XI Class 3/Duke Piping Class F category and imposing the Code requirements on the facility would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety. Therefore, relief is granted, pursuant to 10 CFR 50.55a(a)(3)(ii) as requested.
Sincerely, r ert N. Berkow D rector roject Directorate 11-2 Division of Reactor Projects -
I/II Office of Nuclear Reactor Regulation Docket No. 50-269
Enclosure:
Safety Evaluation cc w/encl:
See next page
Mr. J.
February 20, 1997 perform adequately under the ASME Code,Section XI Class 3/Duke Piping Class F category and imposing the Code requirements on the facility would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety. Therefore, relief is granted, pursuant to 10 CFR 50.55a(a)(3)(ii) as requested.
Sincerely, Original signed by:
Herbert N. Berkow, Director Project Directorate 11-2 Division of Reactor Projects -I/II Office of Nuclear Reactor Regulation Docket No. 50-269
Enclosure:
Safety Evaluation cc w/encl:
See next page Distribution:
Docket File PUBLIC PD 11-2 Rdg.
SVarga JZwolinski HBerkow LBerry DLaBarge OGC GHill (2)
ACRS GTracy, RH EMerschoff, RH RCrlenjak, RH To receive a copy of this document, Indicate in the box:
"C" = Copy without attachment/enclosure "E" = Copy with attachment/enclosure "N" = No copy OFFICE PDII-2/PM
/£ PDII-2/L OGC PD NAME DLaBarge:
LBerry N N)
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DATE I,- / tD/97
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/97
'2N q R/97 T/97 DOCUMENT NAME: G:\\OCONEE\\0C09631.RR OFFICIAL RECORD COPY
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Duke Power Company Oconee Nuclear Station cc:
Mr. Paul R. Newton Mr. Ed Burchfield Legal Department (PB05E)
Compliance Duke Power Company Duke Power Company 422 South Church Street Oconee Nuclear Site Charlotte, North Carolina 28242-0001 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. Robert B. Borsum P. 0. Box 629 Framatome Technologies Raleigh, North Carolina 27602 Suite 525 1700 Rockville Pike Mr. G. A. Copp Rockville, Maryland 20852-1631 Licensing - EC050 Duke Power Company Manager, LIS 526 South Church Street NUS Corporation Charlotte, North Carolina 28242-0001 2650 McCormick Drive, 3rd Floor Clearwater, Florida 34619-1035 Mr. Dayne H. Brown, Director Division of Radiation Protection Senior Resident Inspector North Carolina Department of U. S. Nuclear Regulatory Commission Environment, Health and Route 2, Box 610 Natural Resources Seneca, South Carolina 29678 P. 0. Box 27687 Raleigh, North Carolina 27611-7687 Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Marietta Street, NW. Suite 2900 Atlanta, Georgia 30323 Max Batavia, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600. Bull Street Columbia, South Carolina 29201 County Supervisor of Oconee County Walhalla, South Carolina 29621