LIC-95-0177, Forwards Rev 3 to Engineering Analysis EA-FC-90-062, DG Upper Temp Limits & Rev 3 to Calculation FC05916, Operating Temp Limits for DG-1 & DG-2, for EDG hot-weather Testing

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Forwards Rev 3 to Engineering Analysis EA-FC-90-062, DG Upper Temp Limits & Rev 3 to Calculation FC05916, Operating Temp Limits for DG-1 & DG-2, for EDG hot-weather Testing
ML20093D272
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 10/05/1995
From: Tira Patterson
OMAHA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20093D274 List:
References
LIC-95-0177, LIC-95-177, NUDOCS 9510130193
Download: ML20093D272 (2)


Text

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l Omaha Public Power District 444 South 16th Street Mall Omaha, Nebraska 68102-2247 402/636-2000 October 5, 1995 LIC-95-0177 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station: P1-137 Washington, D.C. 20555

References:

1. Docket No. 50-285
2. Letter from 0 PPD (W. G. Gates) to NRC (Document Control Desk) dated January 9, 1992 (LIC-91-319R)
3. Letter from 0 PPD (W. G. Gates) to NRC (Document C atrol Dc3k) dated hovember 16, 1992 (LIC-92-299)
4. Letter from OPPD (W. G. Gates) to NRC (Document Control Desk) dated October 7, 1993 (LIC-93-0251) i
5. Letter from OPPD (W. G. Gates) to NRC (Document Control Desk) dated October 26, 1994 (LIC-94-0227)

SUBJECT:

Engineering Analysis for Emergency Diesel Generator Hot-Weather Testing at Fort Calhoun Station In Reference 3, the Omaha Public Power District (0 PPD) informed the NRC that an engineering analysis related to the Emergency Diesel Generator (EDG) hot-weather testing would be provided within 90 days of completion of the hot-weather testing at the Fort Calhoun Station (FCS). References 4 and 5 extended the performance of the EDG hot-weather testing due to the mild seasonal temperatures experienced at FCS.

The EDG hot-weather testing was completed for diesel generator DG-1 on July 11, '

1995 and for DG-2 on .luly 12, 1995. Following the completion of the testing and transmittal of data, Calculation #FC05916, " Operating Temperature Limits for DG-1 and DG-2," was revised to include conclusions based on this testing. The new ambient temperature limits for the FCS emergency diesel generators are 110 F for DG-1 and 114 F for DG-2.

951013o193 951005 PDR P ADOCK 05000285 \

PDR 45 5120 Employment wt3 Equal Opportunity

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'U. S. Nuclear Regulatory Commission LIC-95-0177  !

Page 2 Attached please, find '0 PPD's ' Engineeringi Analysis EA-FC-90-062, Revision 3,

" Diesel Generator Upper Temperature Limits" and the associated Calculation

  1. FC05916,. Revision 3, for the EDG hot-weather testing. Revision 3 of Engineering Analysis EA-FC-90-062 also includes an administrative change to Section 6.9.1 l

. clarifying that the jacket water temperature is expected to be 208'F at some l point in time twenty minutes or more after a cold start, per Reference 2.

If you should have any questions, please contact me.

Sincerely, 1

'T. L. Patterson

. Division Manager Nuclear Operations 1

TLP/dll Attachments: 1. Engineering Analysis EA FC-90-062, R3 l

2. Calculation #FC05916, R3 I c: Winston & Strawn (w/o Attachments)

L. J. Callan, NRC Regional Administrator, Region IV S. D. Bloom, NRC Project Manager W. C. Walker, NRC Senior Resident Inspector (w/o Attachments) l l

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