ML20029E581

Monthly Operating Rept for Apr 1994 for Waterford 3.W/940513 Ltr

ML20029E581
Person / Time
Site:	Waterford
Issue date:	04/30/1994
From:	Becker T ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20029E580	List: ML20029E579 ML20029E581 ML20029E584
References
NUDOCS 9405190124
Download: ML20029E581 (5)

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NRC MONTHLY OPERATING REPORT

SUMMARY

OF OPERATIONS WATERFORD 3 APRIL 1994 The unit operated at an average reactor power of 17.8%, completed Refueling Outage 6, and experienced one (1) Reactor trip during the period.

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4 9405190124 940513 PDR ADOCK 05000302  :

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9

• l PRESSURIZER SAFETY VALVE FAILURES AND CHALLENGES WATERFORD 3 During the month of April 1994, there were no pressurizer safety valve failures or challenges.

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OPERATING DATA REPORT DOCKET NUMBER: 50-382 UNIT NAME: WATERFORD 3 DATE OF REPORT: MAY,1994 COMPLETED BY: T.S. BECKER TELEPHONE: 504-739-6683 OPERATING STATUS

1. Reporting Period: April,1994 Gross Hours in Reporting Period: 719

2. Currently Authorized Power Level (MWt): 3390 Maximum Dependable Capacity (Net MWe): 1075 Design Electrical Rating (Net MWe): 1104

3. Power Level to which Restricted (if any) (Net MWe): N/A

4. Reasons for Restriction (if any): N/A THIS MONTH YR TO DATE CUMULATIVE

5. Number ol' Hours Reactor was Critical r 230.4 1,741.8 62,841.8

6. Reactor Reserve Shutdown Hours 7. Hours Generator was On-line 175.0 1,686.3 61,974.5

8. Unit Reserve Shutdown Hours 9. Gross Thermal Energy Generated (MWH) 433,275 5,542,602 204,571,079

10. Gross Electrical Energy Generated (MWH) 134,980 1,807,040 68,227,820

11. Net Electrical Energy Generated (MWH) 115,949 _

1,709,542 65,019,987

12. Reactor Service Factor 32.0 60.5 83.4 ,

13. Reactor Availability Factor 32.0 60.5 83.4 i

14. Unit Service Factor 24.3 58.6 82.2

15. Unit Availability Factor 24.3 58.6 82.2

16. Unit Capacity Factor (using MDC) 15.0 55.2 80.2

17. Unit Capacity Factor (Using DER) 14.6 53.8 78.1 3

18. Unit Forced Outage Rate 10.4 1.2 3.4

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OPERATING DATA REPORT DOCKET NUMBER: 50-382 UNIT NAME: WATERFORD 3 DATE OF REPORT: MAY,1994 COMPLETED BY: T.S. BECKER TELEPHONE: 504-739-6683 OPERATING DATA REPORT (Con't) 19, Shutdowns Scheduled over next 6 Months (type, date and duration of each):

20. If Shutdown at end of report period, estimated date of startup:

21. Unit in Commercial Operation THIS MONTH YR TO DATE CUMULATIVE

22. Hours in Reporting Period 719.0 2879.0 75,384.0

23. Unit Forced Outage Hours 20.3 20.3 2,199.0

24. Nameplate Rating (Gross MWe): 1200

25. If Changes Occurin Capacity Ratings (Items Number 2 and 24) Since Last Report, Give Reasons: N/A l

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W UNIT SHUTDOWNS AND POWER REDUCTIONS ,

i DOCKET NUMBER: 50-382 ,

UNIT NAME: WATERFORD 3 DATE OF REPORT: MAY,1994 COMPLETED BY: T.S. BECKER TELEPHONE: 504-739-6683 REPORT FOR APRIL.1994 Type Method of Shutting F = Forced Duration Down the Reactor or Cause, Comments and Number Date S = Scheduled (Hours) Reason (1) R_educina Power (2) Corrective Actions 94-01 940304 S 523.7 C 4 Unit completed Refuel Outage 6 94-02 940426 F 20.3 A 3 The Reactor tripped on low pressurizer pressure which was the result of a mismatch between Reactor and Turbine power. The mismatch occurred when the Reactor Power Cutback System actuated as a result of a failed relay.

The cause of the mismatch in power is still under investigation.

(1) REASON (2) METHOD '

A= Equipment Failure (explain) 1= Manual B= Maintenance or Test 2= Manual Scram C= Refueling 3= Automatic Scram D= Regulatory Restriction 4= Continuation from Previous Period E= Operator Training and 5= Power Reduction License Examination 6= Other(explain)

F= Administrative G= Operational Error (explain)

H= Other(explain)

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