ML15218A148
| ML15218A148 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 08/28/1997 |
| From: | Berkow H NRC (Affiliation Not Assigned) |
| To: | Mccollum W DUKE POWER CO. |
| Shared Package | |
| ML15218A149 | List: |
| References | |
| TAC-M99018, NUDOCS 9709020127 | |
| Download: ML15218A148 (3) | |
Text
Mr. W. R. McCollum August 28, 1997 Vice President, Oconee,
Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
REQUEST FOR RELIEF NO. 97-03 HIGH PRESSURE INJECTION PUMP 3A RECIRCULATION LINE WELD REPAIR - OCONEE NUCLEAR STATION, UNIT NO. 3 (TAC NO. M99018)
Dear Mr. McCollum:
By letter dated June 17, 1997, Duke Power Company (licensee) requested relief from the radiographic examination requirement of the 1992 ASME Code,Section III, for a weld in the High Pressure Injection Pump 3A minimum recirculation orifice assembly for Oconee Nuclear Station, Unit No. 3. The staff finds the proposed request for relief to be acceptable, and has provided its evaluation in the enclosed Safety Evaluation.
The staff has determined that your proposed alternative of an ultrasonic examination of the weld is a reliable volumetric examination but suffers from a drawback of missing shallow surface flaws due to the near-field effect of the ultrasonic transducer. However, your proposal to perform a surface examination using liquid penetrant, combined with the ultrasonic examination of the weld, provides an acceptable level of quality and safety.
Therefore, your request for relief to perform ultrasonic and liquid penetrant examinations in lieu of the Code-required radiographic examination of Weld No. 3-HPI-262-45 on the orifice assembly is authorized, pursuant to 10 CFR 50.55a(a)(3)(i).
Sincerely, ORIGINAL SIGNED BY V. NERSES FOR:
Herbert N. Berkow, Director Project Directorate 11-2 flivi~inn of Reator ProjectsI/I Office of Nuclear Reactor Regulation O
Docket No. 50-287 00NO I
Enclosure:
Safety Evaluation alU cc w/encl: See next page 0
Distribution:
Docket File PPatnaik OGC 1o PUBLIC HBerkow ACRS PD 11-2 Rdg.
LBe ry JJohnson, R11 BBoger La arge SShaeffer, RI1 THarris (e-mail TLH3-SEir To receive a copy of this document, indicate in the box:
NuCopy without attachment/enclosure "E"
Copy with attachentlenclosure "NE No copy OFFICE PM:P)I- ;
LA:PDII-2 G OG D:P 1-2 NAME DLAB E:cn LBER)RY H'E K DATE 9
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)OC0JMENT I ME G;\\OCONEE\\OCO99018.LTR OFFICIAL RECORD COPY
UNITED STATES NUCLEAR REGULATORY COMMISSION Z
WASHINGTON, D.C. 20555-0001 August 28, 1997.
Mr. W. R. McCollum Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
REQUEST FOR RELIEF NO. 97-03 HIGH PRESSURE INJECTION PUMP 3A RECIRCULATION LINE WELD REPAIR - OCONEE NUCLEAR STATION, UNIT NO. 3 (TAC NO. M99018)
Dear Mr. McCollum:
By letter dated June 17, 1997, Duke Power Company (licensee) requested relief from the radiographic examination requirement of the 1992 ASME Code,Section III, for a weld in the High Pressure Injection Pump 3A minimum recirculation orifice assembly for Oconee Nuclear Station, Unit No. 3. The staff finds the proposed request for relief to be acceptable, and has provided its evaluation in the enclosed Safety Evaluation.
The staff has determined that your proposed alternative of an ultrasonic examination of the weld is a reliable volumetric examination but suffers from a drawback of missing shallow surface flaws due to the near-field effect of the ultrasonic transducer. However, your proposal to perform a surface examination using liquid penetrant, combined with the ultrasonic examination of the weld, provides an acceptable level of quality and safety.
Therefore, your request for relief to perform ultrasonic and liquid penetrant examinations in lieu of the Code-required radiographic examination of Weld No. 3-HPI-262-45 on the orifice assembly is authorized, pursuant to 10 CFR 50.55a(a)(3)(i).
Sincerely, Herbert N. Berkow, Director Project Directorate 11-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50-287
Enclosure:
Safety Evaluation cc w/encl: See next page
Oconee Nuclear Station cc:
Mr. Paul R. Newton Mr. J. E. Burchfield Legal Department (PBO5E)
Compliance Manager 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, Ill, 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 - ECO50 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. Richard Fry, 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 Region1a AdministatrL, regin I
U. S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth Street, S.W., Suite 23T85 Atlanta, Georgia 30303 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