ML15239A313
| ML15239A313 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/03/1995 |
| From: | Berkow H Office of Nuclear Reactor Regulation |
| To: | Hampton J DUKE POWER CO. |
| Shared Package | |
| ML15239A315 | List: |
| References | |
| TAC-M88210, NUDOCS 9501260065 | |
| Download: ML15239A313 (3) | |
Text
Mr. J. W. Hampton Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 2 AND 3 - SECOND TEN-YEAR INTERVAL INSERVICE INSPECTION REQUEST FOR RELIEF NO. 93-12 (TAC NO. M88210)
Dear Mr. Hampton:
By letter dated November 15, 1993, Duke Power Company submitted Request for Relief No. 93-12 from certain ASME Code requirements that you determined to be impractical to perform at Oconee Nuglear Station, Unit 3, during the second 10-year interval inservice inspection.
Relief is requested from the requirements of IWA-4400 to perform a system hydrostatic pressure test after repairs by welding on the system pressure boundary of the emergency condenser cooling water (ECCW) system. Performance of the Code-required testing would disable the ECCW system for all three units, and would require extensive piping modifications. As alternative testing, you proposed surface examinations of the welds, visual examinations when the system is at normal operating pressure, and a test to verify the system's flow path. Additional information was provided in a letter dated February 9, 1994, and the request was expanded to include Oconee Unit 2 in a letter dated July 7, 1994.
The NRC staff, with technical assistance from its contractor, the Idaho National Engineering Laboratory, has reviewed and evaluated the November 15, 1993, request and the supplemental submittals. The staff has concluded that certain requirements of the Code are impractical and that pursuant to 10 CFR 50.55a(g)(6)(i), relief may be granted as requested by Request for Relief 93-12. The staff has also concluded that your proposed alternative examination of the welds will provide reasonable assurance of the structural reliability of the ECCW system. The staff's evaluation and conclusions are contained in the enclosed Safety Evaluation. This relief is authorized by law and will not endanger life or property or the common defense and security, and is otherwise in the public interest, given due consideration to the burden that could result if the requirements were imposed on your facility.
Sincerely, Original signed by:
Herbert N. Berkow, Director Project Directorate 11-3 Division of Reactor Projects - 'I/II Office of Nuclear Reactor Regulation Docket Nos. 50-270, 50-287 DISTRIBUTION:
JZwolinski D-Do-cFet-F --1e LWiens
Enclosure:
Safety Evaluation PUBLIC LBerry PDII-3 R/F OGC, 0-15 B18 cc w/enclosure:
See next page SVarga ACRS (4), TWF HBerkow EMerschoff, RII RSpessard, 0-9 A2 JLieberman, 0-7 H5 EJordan, T-4 D18 GHill (2), T-5 C23 OC/LFDCB T-9 E1O GTracy, 0-17 G21 DOCUMENT NAME: G:\\OCONEE\\RR9312.LTR 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 LA:PD23:DRPE E
PM:PD23:DRP E hD:PD23:,1~y1 E
OGC NAME LBerry LWiens:cw H4kL er DATE 1,/-1494 0ji1/9/,
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9501260065 950103 N1 PDR ADOCK 050002700 Ga PDR01
,VptRE~j 4 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. J. W. Hampton January 3, 1995 Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 2 AND 3 - SECOND TEN-YEAR INTERVAL INSERVICE INSPECTION REQUEST FOR RELIEF NO. 93-12 (TAC NO. M88210)
Dear Mr. Hampton:
By letter dated November 15, 1993, Duke Power Company submitted Request for Relief No. 93-12 from certain ASME Code requirements that you determined to be impractical to perform at Oconee Nuclear Station, Unit 3, during the second 10-year interval inservice inspection. Relief is requested from the requirements of IWA-4400 to perform a system hydrostatic pressure test after repairs by welding on the system pressure boundary of the emergency condenser cooling water (ECCW) system. Performance of the Code-required testing would disable the ECCW system for all three units, and would require extensive piping modifications. As alternative testing, you proposed surface examinations of the welds, visual examinations when the system is at normal operating pressure, and a test to verify the system's flow path. Additional information was provided in a letter dated February 9, 1994, and the request was expanded to include Oconee Unit 2 in a letter dated July 7, 1994.
The NRC staff, with technical assistance from its contractor, the Idaho National Engineering Laboratory, has reviewed and evaluated the November 15, 1993, request and the supplemental submittals. The staff has concluded that certain requirements of the Code are impractical and that pursuant to 10 CFR 50.55a(g)(6)(i), relief may be granted as requested by Request for Relief 93-12. The staff has also concluded that your proposed alternative examination of the welds will provide reasonable assurance of the structural reliability of the ECCW system. The staff's evaluation and conclusions are contained in the enclosed Safety Evaluation. This relief is authorized by law and will not endanger life or property or the common defense and security, and is otherwise in the public interest, given due consideration to the burden that could result if the requirements were imposed on your facility.
- ncerely, erbert N. erkow, Director Project Directorate 11-3 Division of Reactor Projects -
I/II Office of Nuclear Reactor Regulation Docket Nos. 50-270, 50-287
Enclosure:
Safety Evaluation cc w/enclosure: See next page
Mr. J. W. Hampton Duke Power Company Oconee Nuclear Station cc:
A. V. Carr, Esquire Mr. Ed Burchfield Duke Power Company Compliance 422 South Church Street Duke Power Company Charlotte, North Carolina 28242-0001 Oconee Nuclear Site P. 0. Box 1439 J. Michael McGarry, III, Esquire Seneca, South Carolina 29679 Winston and Strawn 1400 L Street, NW.
Ms. Karen E. Long Washington, DC 20005 Assistant Attorney General North Carolina Department of Mr. Robert B. Borsum Justice Babcock & Wilcox P. 0. Box 629 Nuclear Power Division Raleigh, North Carolina 27602 Suite 525 1700 Rockville Pike Mr. G. A. Copp Rockville, Maryland 20852 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 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