ML15238A069
| ML15238A069 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/19/1995 |
| From: | Wiens L NRC (Affiliation Not Assigned) |
| To: | Hampton J DUKE POWER CO. |
| References | |
| NUDOCS 9504240270 | |
| Download: ML15238A069 (3) | |
Text
Mr. J. W. Hampton April 19, 1990 "Vice President, Ocon Site iy ke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
MODIFICATION OF THE OCONEE ANTICIPATED TRANSIENT WITHOUT SCRAM (ATWS) DESIGN
Dear Mr. Hampton:
In a letter dated April 4, 1995, you informed us of an inadvertent material change in the design description of the Oconee ATWS Mitigation Systems Actuation Circuitry. The change resulted from the replacement of pressure switches in the Anticipatory Reactor Trip System (ARTS), such that the ARTS and the ATWS pressure switches were made by the same manufacturer. Your Final Design Description and our Safety Evaluation Report both stated that the sensors used for the~ATWS systems were from diverse manufacturers.
As stated in your letter, we did not require the ATWS system sensors to be of diverse manufacture from the ARTS. -Therefore, your design for the ATWS system continues to be acceptable. If you have any questions regarding this matter, contact me at (301) 415-1495.
Sincerely, Original signed by:
Herbert N. Berkow for:
L. A. Wiens, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects-I/II Office of Nuclear Reactor.Regulation Docket Nos. 50-.269, -:50-270, and 50-287 cc:
See next page DISTRIBUTION CDbicke t-F-ie PUBLIC PD22 Reading F le S. Varga J. Zwolinski OGC ACRS (4)
R. Crlenjak, RfI E. Merschoff, RII 9504240270 950419 PDR ADOCK 05000269 P
- See previous concurrencefr DOCUMENT NAME:, G: \\OCONEE\\ATWS.REV 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 I*LA:PD22:DRPE I E I*PM:PD DPD2 rt/ DR NAME ILBerry ILWiens:dt HBer u JWe DATE 4/14/95 4/14/95 14/
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/95.
OFFICIAL RECORD COPY
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2055-0)001 April 19, 1995 Mr. J. W. Hampton Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
MODIFICATION OF THE OCONEE ANTICIPATED TRANSIENT WITHOUT SCRAM (ATWS) DESIGN
Dear Mr. Hampton:
In a letter dated April 4, 1995, you informed us of an inadvertent material change in the design description of the Oconee ATWS Mitigation Systems Actuation Circuitry. The change resulted from the replacement of pressure switches in the Anticipatory Reactor Trip System (ARTS), such that the ARTS and the ATWS pressure switches were made by the same manufacturer. Your Final Design Description and our Safety Evaluation Report both stated that the sensors used for the ATWS systems were from diverse manufacturers.
As stated in your letter, we did not require the ATWS system sensors to be of diverse manufacture from the ARTS. Therefore, your design for the ATWS system continues to be acceptable. If you have any questions regarding this matter, contact me at (301) 415-1495.
S' cerely, A. Wiens, Senior Project anager Project Directorate 11-2 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc:
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 B&W Nuclear Technologies P. 0. Box 629.
Suite 525 Raleigh, North Carolina 27602 1700 Rockville Pike Rockville, Maryland 20852-1631 Mr. G. A. Copp Licensing - ECO50 Manager, LIS Duke Power Company NUS Corporation 526 South Church Street 2650 McCormick Drive, 3rd Floor Charlotte, North Carolina 28242-0001 Clearwater, Florida 34619-1035 Dayne H. Brown, Director Senior Resident Inspector Division of Radiation Protection U. S. Nuclear Regulatory Commission North Carolina Department of Route 2, Box 610 Environment, Health and Seneca, South Carolina 29678 Natural Resources P. 0. Box 27687 Regional Administrator, Region II Raleigh, North Carolina 27611-7687 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