LIC-97-0149, Monthly Operating Rept for Aug 1997 for Fort Calhoun Station Unit 1

Monthly Operating Rept for Aug 1997 for Fort Calhoun Station Unit 1

ML20210U934
Person / Time
Site:	Fort Calhoun
Issue date:	08/31/1997
From:	Edwards M, Gambhir S OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LIC-97-0149, LIC-97-149, NUDOCS 9709220170
Download: ML20210U934 (5)

Text

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Omaha Public PowerDistnct 444 South 16th Street Mall Omaha NE 68102-2247 September 12, 1997 LIC-97-0149 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station P1-137 Washington. D.C. 20555

Reference:

Docket No. 50-285

SUBJECT:

August 1997 Monthly Operating Report (HOR)

Enclosed please find the August MOR for Fort Calhoun Station (FCS) Unit No. 1 as required by FCS Technical Specification 5.9.1. Revised Operating Data Reports (ODR) for the months of June and July 1997 are also enclosed. These ODRs were revised to correct a transcription error in which the hours in the reporting period were inadvertently substituted for the hours that the reactor was critical.

If you should have any questions, please contact me.

Sincerely.

4 h

S. k. Gambhir Division Manager -

, Engineering & Operations Support l SKG/mle b g Enclosu: es c: Winston & Strawn

. E. W. Merschoff. NRC Regional Administrator Region IV L. R. Wharton, NRC Project Manager W. C. Walker. NRC Senior Resident Inspector R. J. Simon. Westinghouse INPO Records Center 9709220170 970831 DR ADOCKOSOOg5  !(( i}lj\!}{\[

                                                                ..J O U T) 45.5124                                                                         Employment with Equal Opportunty

4 ATTACHMENT I OPERATING DATA REPORT DOCKET NO. 50-285 UNIT NAME FORT CALHOUN STATION DATE SEPTEMBER 3. 1997 COMPLETED BY M. L EDWARDS TELEPHONE (402) 533-6929 REPORT PERIOD: August 1997

1. Design Electrical Rating (Mwe-Net): 478

2. Maximum Dependable Capacity (Mwe-Net): 478 OPERATING STATUS THIS MONTH YR-TO-DATE CUMULATIVE

3. Number of Hours Reactor was Critical: 744.0 5343.0 166034.6

4. Number of Hours Generator was On-line: 744.0 5290.4 164158.2

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 338413.4 2486592.9 69472714.2 t

ATTACHMENT 11 DOCKET NO. 50-285_- UNIT SHUTDOWNS U'41T NAME forLCalhoun DATE September _3 _1997 - REPORT MONTH AugusL199Z COMPLETED BY !LL._ Edwards _ TELEPHONE (40ZL533-6929_ No. Date Type. Duration .Reasont "..-MethodfofJ Cause & Corrective J(Hours)- Shutting? JAction to'- F:' Forced-.. .

                                                                                                                                             ' Prevent" Recurrence-Sf-Scheduled                                       'Down Reactor2 -

None (1) (2) Reason: Method: A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Lv..tinuation E-Operator Training / License Examination 5-Other (Explain) F-Administrative G-Operational Error (Explain) H-Other (Explain) OPERATIONS SUMMMY: The Fort Calhnun Station (FCS) operated at a nominal 100% power until August 12, 1997. at 1924 hours. At this time. reactor power was reduced to 70% due to a calculational concern which resulted in conservatively declaring the inoperability of the Axial Power Distribution Trip Units on "A and "D" channels of the reactor protection system. Operability of A and ~D channels was restored on August 14. 1997 at 0413 hours and a power ascension to 100% began. The reactor reached 100% power on August 15. 1997 at 0615 hours. Reactor power remained at 100% until. August 26. Inverter (EE-8H) bypass switch. Repairs to the switch were completed 1997 at 1215 hours when a shutdown was commenced due to the failure of "A on August 26. 1997 at 2359 hours; the shutdown was stopped at 22% power and a power ascension to 100% began. The reactor reached 100% power on August 28. 1997 at 2100 hours and remained there through the end of August 1997. During the month of August 1997. no power operated relief valves (PORV) or primary system safety valve challenges. or failures occurred.

ATTACHMENT I OPERATING DATA REPORT DOCKET NO. 50-285 UNIT NAME FORT CALHOUN STATION DATE SEPTEMBER 3. 1997 COMPLETED BY M. L. EDWARDS TELEPHONE (402) 533-6929 REPORT PERIOD: June 1997 ** REVISED **

1. Design Electrical Rating (Mwe-Net): 478

2. Maximum Dependable Capacity (Mwe-Net): 478 OPERATING STATUS THIS MONTH YR TO DATE CUMULATIVE

3. Number of Hours Reactor was Critical: 720.0 3855.0 164546.6 l

4. Number of Hours Generator was On-line: 720.0 3802.4 162670.2

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 344878.4 1797154.1 68783275.4

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ATTACHMENT I OPERATING DATA REPORT DOCKET NO. 50-285 UNIT NAME FORT CALHOUN STATION DATE SEPTEMBER 3. 1997 COMPLETED BY M. L. EDWARDS TELEPHONE (402) 533-6929 REPORT PERIOD: July 1997 ** REVISED **

1. Design Electrical Rating (Mwe-Net): 478

2. Maximum Dependable Capacity (Mwe-Net): 478 OPERATING STATUS THIS MONTH YR T0 DATE CUMULATIVE

3. Number of Hours Reactor was Critical: 744.0 4599.0 165290.6 l

4. Number of Hours Generator was On-line: 744.0 4546.4 163414.2

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 351025.4 2148179.5 69134300.8

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