ML19257A511
| ML19257A511 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 12/27/1979 |
| From: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| To: | Gammill W Office of Nuclear Reactor Regulation |
| References | |
| TAC-13148, NUDOCS 8001040533 | |
| Download: ML19257A511 (2) | |
Text
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GLNeR AL OFFICE b1 P. O. BOX 499 COLUMBUS NeBR ASKA 66601 4
4 Nebraska Publ.ic Power Distr. t ic retsa o~c c402> s.4..s.1 December 27, 1979 Office of Nuclear Reactor Regulation Atta: William Ga= mill, Acting Assistant Director Division of Operating Reactors, Projects U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Station Electrical Distribution System Voltage Cooper Nuclear Station NRC Docket No. 50-298, DPR-46
Reference:
- 1) Letter from W. Ga= mill to All Power Reactor Licensees Dated August 8,1979, " Adequacy of Station Electric Distribution Systems Voltages"
- 2) Letter from J. Pilant to W. Gammill Dated October 8,1979, same subject
Dear Mr. Ga= mill:
Reference 1 requested Nebraska Public Power District to submit a voltage drop analysis for Cooper Nuclear Station, and Reference 2 informed the NRC of the expected submittal date.
Attached is the completed " Voltage Drop Analysis Computations" conducted in accordance with the NRC guide-lines contained in Reference 1.
The analysis indicates the following:
1.
The offsite power system and the onsite distribution system for Cooper Nuclear Station is of sufficient capacity and capability to automatically start as well as operate all required safety loads within their voltage ratings in the event of:
2.
The electrical power syst ms for Cooper Nuclear Station do not have any potential for any events or conditions which could result in the simultaneous or consequential loss of both required circuits to the offsite network in violation of GDC-17 in this regard.
The NRC requested that testing be performed to provide additional verifi-cation of the adequacy of the station electrical distributien system.
Testing methods are prescutly being studied in light of the f avorable analytical results. A description of the method used to perform this verification will be provided approximately May 30, 1980.
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//O 1685 027 sco1 cu 31
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. William Gamt11 December 27, 1979 Page 2 If you have any questions relative to the enclosed analysis, please do not hesitate to contact ne.
Very truly yours, Origind ?!;W Uy:
JAY R PilMI Jay M. Pilant Director of Licensing and Quality Assurance 3pyj g Attach =ent bec:
L. C. Lessor w/2 copies of analysis J. W. Hagge-w/l copy of analysis J. R. Philbrick w/o analysis NRC Distribution w/o analysis e
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