ML20035E805

Monthly Operating Rept for Mar 1993 for Waterford 3

ML20035E805
Person / Time
Site:	Waterford
Issue date:	03/31/1993
From:	Alday C, Burski R ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
W3F1-93-0134, W3F1-93-134, NUDOCS 9304190273
Download: ML20035E805 (7)

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WM *>d 3 W3F1-93-0134 A4.05 PR April 15, 1993 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Subject:

Waterford 3 SES Docket No. 50-382 License No. NPF-38 Monthly Operating Report Gentlemen:

Attached is the subject monthly report which covers the operating statistics for the month of March, 1993. This report is submitted per Section 6.9.1.6 of the Waterford 3 Technical Specifications for Facility Operating License No. NPF-38.

Very truly yours, t i R.F. Burski Director Nuclear Safety RFB/TSB/ssf Attachment cc:

J.L. Milhoan, NRC Region IV D.L. Wigginton, NRC-NRR R.B. McGehee N.S. Reynolds F. Yost (Utility Data Institute, Inc.)

J.T. Wheelock (INP0 Records Center)

NRC Resident Inspectors Office Y

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e NRC MONTHLY OPERATING REPORT

SUMMARY

OF OPERATIONS t

r WATERFORD 3 MARCH 1993 i

I The unit operated at an average reactor power of 94.1% and experienced one (1) l shutdown and one (1) significant power reduction during the period.

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i PRESSURIZER SAFETY VALVE FAILURES AND CHALLENGES WATERFORD 3 During the month of March 1993, there were no pressurizer safety valve failurae f

or challenges.

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OPERATING DATA REPORT DOCKET NAME: 50-382 UNIT NAME: WATERFORD 3 i

DATE OF REPORT: APRIL, 1993 LVMPLETED BY:

C. L. ALDAY TELEPHONE: 504-739-6732 OPERATING STATUS 1.

Reporting Period: March, 1993 Gross Hours in Reporting Period: 744 I

2.

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

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3.

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

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Reasons for Restriction (if any):

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THIS MONTH YR TO DATE CUMULATIVE l

5.

Number of Hours Reactor was Critical 715.0 2,131.0 54,524.0 6.

Reactor Reserve I

Shutdown Hours l 7.

Hours Generator was On-line 711.3 2,127.3 53,723.5 8.

Unit Reserve Shutdown Hours 9.

Gross Thermal Energy Generated (MWH) 2,373,995 7,160,078 176,827,131 10.

Gross Electrical Energy Generated (MWH) 775,550 2,355,410 59,216,880 11.

Net Electrical Energy i

Generated (MWH) 741,080 2,254,758 56,426,375 12.

Reactor Service Factor 96.1 98.7 82.7 13.

Reactor Availability Factor 96.1 98.7 82.7 l

14.

Unit Service Factor 95.6 98.5 81.5 15.

Unit Availability Factor 95.6 98.5 81.5 i

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Unit Capacity Factor l

(using MDC) 92.7 97.1 79.6 17.

Unit Capacity Factor (Using DER) 90.2 94.6 77.6 18.

Unit Forced Outage Rate 4.4 1.5 3.8

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I OPERATING DATA REPORT I

DOCKET NAME: 50-382 UNIT NAME: WATERFORD 3 DATE OF REPORT: APRIL, 1993 l

COMPLETED BY:

C. L. ALDAY TELEPHONE: 504-739-6732 OPERATING DATA REPORT (Con't)

Shutdowns Scheduled over next 6 Months (type, date and duration of each):

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If Shutdown at end of report period, estimated date of startup: N/A i

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Unit in commercial Operation t

THIS MONTH YR TO DATE CUMULATIVE r

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Hours in Reporting Period 744.0 2,160.0 65,905.0 l

23.

Unit Forced Outage Hours 32.7 32.7 2,143.4 24.

Nameplate Rating (Gross MWe): 1200 25.

If Changes occur in capacity Ratings (Items Number 2 and 24) Since Last Report, Give Reasons: N/A I

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1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NAME: 50-382 I

UNIT NAME: WATERFORD 3 DATE OF REPORT: APRIL, 1993 COMPLETED BY: C. L. ALDAY TELEPHONE: 504-739-6732 MONTH MARCH DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 1060 17 1062 2

1058 18 1062 3

1045 19 1061 4

798 20 1062 5

-44 21 1061 6

463 22 1060 7

1045 23 1061 8

1050 24 1061 9

1057 25 1059 10 1062 26 1059 11 1063 27 1060 12 1063 28 1060 13 1064 29 1060 14 1061 30 1059 15 1065 31 1061 16 1063 INSTRUCTIONS on this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NUMBER: 50-382 UNIT NAME: WATERFORD 3 DATE OF REPORT: APRIL,1993 COMPLETED DY: C.L.ALDAY TELEPHONE: 504-739-6732 REPORT FOR MARCH.1993 Type Method of Shutting F = Forced Duration Down the Reactor or Cause, Comments and Number paig S = Scheduled (Hours)

Reason (1)

Reducina Power (2).

Corrective Actions 93-01 930303 F

0.0 G

5 Root Cause: Main Feedwater Pump B tripped, resulting in a Reactor Power Cutback actuation. Contributing Cause: Communication breakdown between Operations and Maintenance allowed Maintenance to work on the Feed Heater Drain Pump level controller instead of Drain Collect Tank level controller, causing an inadvertent trip of Heater Drain Pumps, resulting in reduction of Main Feedwater pump suction pressure.

93-02 930304 F

32.7 A

3 Root Cause: Coincidental failure of the uninterruptable supply for Safety Instrument Channel C and Plant Protection System Power Supply

1. 8. Neither single failure would have caused the Reactor Trip.

(1) REASON (2) METHOD Manual Equipment Failure (explain) 1 A

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Manual Scram B=

Maintenance or Test 2

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Refueling 3=

Automatic Scram Continuation from Previous Period D=

Regulatory Restriction 4

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Power Reduction E=

Operator Training and 5

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License Examination 6=

Other (explain)

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Administrative Operational Error (explain)

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Other (explain)

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