ML20092C791

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Forwards Revised Monthly Operating Repts for Jan-Oct,1983, Due to High Pressure Turbine Blading Removal & Subsequent Reduction in Max Dependable Capacity
ML20092C791
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 06/14/1984
From: William Jones, Matthews T
OMAHA PUBLIC POWER DISTRICT
To: Deyoung R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20092C793 List:
References
LIC-84-172, NUDOCS 8406210325
Download: ML20092C791 (1)


Text

r m-Omaha Public Power District 1623 Harney Omaha, Nebraska 68102 402/536 4000 June 14, 1984  :

LIC-84-172 Mr. Richard C. DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Reference:

Docke t No. 50-285

Dear Mr. DeYoung:

Revised Operating Data Reports for January - October, 1983 In December, 1982, the first stage blading of the high pressure turbine of the Omaha Public Power District's Fort Calhoun Station failed. Subsequent to this failure, the blading was removed.

This removal effectively reduced the station's maximum dependable capacity (gross MWe and net MWe) from design values of 501 and 478, respectively, to 461 and 438, respectively.

The decision to utilize the reduced values was not made until October, 1983. However, in order to accurately reflect operating conditions between January and October, 1983, it was necessary to perform revised calculations for these months. The changes to the attached Operating Data Report pages are denoted by vertical black lines in the right-hand margin.

It should be noted that all calculations performed af ter October, 1983 have utilized the revised values. These pages are therefore being provided to achieve consistency between the pre-October and post-October, 1983 monthly operating reports.

Singerely,

\ 'lA (ukb!)M B406210325 840614 W. C.{ Jones PDR ADOCK 05000285 Division Manager R PDR Production Operations WCJ/DJM:jmm Attachments cc: NRC Regional Office Office of Management & Program Analysis (2)

Mr. R. R. Mills - Combustion Engineering Mr. T. F. Polk - Westinghouse Nuclear Safety Analysis Center INPO Records Center NRC File ][ [8f i cs sin Employment with Equal Opportunity Male / Female l[I 4

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