ML20099H834

Submits Addl Info Re Diesel Generator Commitments,Per a Ungaro Request.Until 850426 Delivery of Equipment for Design Mod,Diesel Will Be Accelerated Automatically within 10 Period to Synchronous Speed & Machine Loaded Slowly

ML20099H834
Person / Time
Site:	Fermi
Issue date:	03/15/1985
From:	Earle O DETROIT EDISON CO.
To:	Lynch M Office of Nuclear Reactor Regulation
References
NE-85-0462, NE-85-462, NUDOCS 8503190506
Download: ML20099H834 (3)

Text

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CNBIR3lf Fermi 2 Edison iGIE*r c.v..

, arch 15, 1,85 NE-85-0462 Mr. M. D. Lynch Licensing Project Manager Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C.

20555

Reference:

(1)

Fermi 2 NRC Docket No. 50-341 (2)

Detroit Edison to NRC Letter,

" Clarification of Diesel Generator Commitments", NE-85-0459, dated March 14, 1985

Subject:

Transmittal of Additional Information Relative to Diesel Generator Commitments As committed in our telecon earlier on this date, the following information is provided in response to the requests made by Mr. A. Ungaro after review of Reference (2):

o The estimated delivery date for the equipment needed in the design modification to permit slow starting the diesels is April 26, 1985.

Until the modification is implemented, the slow start procedure will not be used.

Until that time, the diesel will be accelerated auto-matically within the le second time period to synchronous speed and then the machine will be loaded slowly per the manufacturer's recommendations.

During surveillance testing due to a loss of offsite o

power or a loss of a diesel, the other remaining diesel generetors will not be synchronized with the electrical grid under conditions of grid instability to assure plant safety is not degraded.

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Mr. M. D. Lynch March 15, 1985 NE-85-0462 Page 2 Please direct any questions to me at (313) 586-4211.

Sincerely,

/

f-O. K. Earle Supervisor - Licensing cc:

Mr.

P. M. Byron Mr. M. D. Lynch Mr. A. Ungaro USNRC Document Control Desk Washington, D.C. 20555

Mr. M. D. Lynch March 15, 1985 NE-85-0462 Page 3 bcc:

Approval Control F. E. Agosti L. P. Bregni W. F. Colbert O. K. Earle W. J. Fahrner J. R. Green W. R. Holland W. H. Jens R. S. Lenart P. A. Marquardt J. W. Nyquist A. Papadopoulos T. D. Phillips L. J. Simpkin G. M. Trahey A. E. Wegele O. K. Earle (Bethesda Office)

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