ML17164A428
| ML17164A428 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 06/28/1991 |
| From: | Butler W Office of Nuclear Reactor Regulation |
| To: | Keiser H PENNSYLVANIA POWER & LIGHT CO. |
| References | |
| TAC-65644, TAC-65645, NUDOCS 9107050055 | |
| Download: ML17164A428 (6) | |
Text
4)ocket Nos.
50-387 and 50-388 June 28, 1991 Mr. Harold W. Keiser Senior Vice President
- Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsy1vani a 18101 Dear Mr. Kei ser SUBJECT'VALUATION OF POTENTIAL COMMON-MODE FAILURE, SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1
AND 2 (TAC NOS.
65644 AND 65645)
The NRC staff has completed the review of your (the licensee's) subject evaluation and the associated information supplied.
The primary focus of the review was on the electr ical isolation between Class 1E and non-Class lE circuits.
The enclosed safety evaluation (SE) addresses each aspect of the isolation issues (Enclosure).
The staff requests that the licensee revise the FSAR to accurately describe the Susquehanna conformance with IEEE 279-1971.
This is required to meet the commitment in the licensee's resolution plan.
In a letter dated April 26, 1991, the licensee committed to perform equipment modifications and revisions to the FSAR which satisfactorily address our requests.
The adequacy of associated circuits isolation at GE plants, is a generic issue involving many plants, in addition to Susquehanna, which we will be resolving on a generic basis.
If you have any questions, please contact Jim Stewart at (301) 49-20824 or James J. Raleigh at (301) 49-21426.
Enclosure:
Safety Evaluation cc w/o enclosure:
See next page JStewart RBlough DISTRIBUTION w/o enclosure i Doc e
s ef FDI-2 Reading NRC--and-Local PDRs MO'Brien DISTRIBUTION w/enclosure a ani J
ee JRaleigh SNewberry S incere ly,
/s/
Walter R. Butler, Project Director Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
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I'i Docket Nos.
50-387 and 50-388 UNITED STATES NUCLEAR REGULATORY COMIVllSS1ON WASHINGTON, D.C. 20555 June 28, 1991 Hr. Harold H. Keiser Senior Vice President
- Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Dear Nr. Keiser
SUBJECT:
EVALUATION OF POTENTIAL COMMON-NODE FAILURE, SUSQUEHANNA STEAVi ELECTRIC STATION, UNITS 1
AND 2 (TAC NOS.
65644 AND 65645)
The NRC staff has completed the review of your (the licensee's) subject evaluation and the associated information supplied.
The primary focus of the review was on the electrical isolation between Class 1E and non-Class 1E circuits.
The enclosed safety evaluation (SE) addresses each aspect of the isolation issues (Enclosure).
The staff requests that the licensee 'revise the FSAR to accurately describe the Susquehanna conformance with IEEE 279-1971.
This is required to meet the commitment in the licensee's resolution plan.
In a letter dated April 26, 1991, the licensee committed to perform equipment modifications and revisions to the FSAR which satisfactorily address our requests.
The adequacy of associated circuits isolation at GE plants, is a generic issue involving many plants, in addition to Susquehanna, which we will be resolving on a generic basis.
If you have any questions, please contact Jim Stewart at (301) 49-20824 or James J. Raleigh at (301) 49-21426.
Enclosure:
Safety Evaluation cc w/o enclosure:
See next page Malter R. Butler, Project Director Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
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Mr. Harold W. Keiser Pennsylvania Power II Light Company Susquehanna Steam Electric Station Units 1
5 2
CC:
Jay Silberg, Esq.
Shaw, Pittman, Potts 5 Trowbridge 2300 N Street N.W.
Washington, O.C.
20037 Bryan A. Snapp, Esq.
Assistant Corporate Counsel Pennsylvania Power 5 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. J.
M. Kenny Licensing Group Supervisor Pennsylvania Power 5 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. Scott Barber Senior Resident Inspector U. S. Nuclear Regulatory Commission P.O.
Box 35 Berwick, Pennsylvania 18603-0035 Mr. Thomas M. Gerusfy, Director Bureau of Radiation Protection Resources Commonwealth of Pennsylvania P. 0.
Box 2063 Harrisburg, Pennsylvania 17120 Mr. Jesse C. Tilton, III Allegheny Elec. Cooperative, Inc.
212 Locust Street P.O.
Box 1266 Harrisburg, Pennsylvania 17108-1266 Mr. S.
B. Ungerer Joint Generation Projects Oepartment Atlantic Electric P.O.
Box 1500 1199 Black Horse Pike Pleasantvi lie, New Jersey 08232 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Mr. Harold G. Stanley Superintendent of Plant Susquehanna Steam Electric Station Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. Herbert O. Woodeshick Special Office of the President Pennsylvania Power and Light Company 1009 Fowles Avenue Berwick, Pennsylvania 18603 Mr. Robert G.
Byram Vice President-Nuclear Operations Pennsylvania Power and Light Company 2 North Ninth Street A 1 1 entown, Pennsylvania 18101
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