ML20149G457

Monthly Operating Rept for Jan 1988

ML20149G457
Person / Time
Site:	Maine Yankee
Issue date:	01/31/1988
From:	Rivard D, Whittier G Maine Yankee
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
9599L-LMO, GDW-88-33, MN-88-15, NUDOCS 8802180270
Download: ML20149G457 (5)

Text

OPERATING DATA REPORT D ckot N2.s 50-309 Dcto:

08/Fcb/88 Completed By:

D.A.

Rivard Telephone 207-882-6321 1.

Unit Name.......................................

Maine Yankee 2.

Reporting Period................................

January 1988 3.

Licensed Thermal Power (MWt)....................

2630 4.

Nameplate Rating (Gross MWe)....................

864 5.

Design Electrical Rating (Net NWe)..............

825 6.

Maximum Dependable Capacity (Gross MWe).........

850 7.

Maximum Dependable Capacity (Net MWe)...........

810 8.

If Changes in Capacity Ratings (Items Number 3-7)

Since Last Report, Give Reasons:

NO CHANGES 9.

Power Level to Which Restricted, if Any (Net MWe) _

10. Reasons for Restrictions, if Any:

THIS MONTH YEAR-TO-DATE CUMULATIVE

11. Hours In Reporting Period 744.00 744.00

12. Number of Hours Reactor Wan Critical...........

727.92 727.92 106.581.24

13. Reactor Reserve Shutdown Hours..................

0.00 0.00 0.00

14. Hours Generator On-line.,

714.78 714.78 103.469.86

15. Unit Reserve Shutdown Hours..................

0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH)........

1.871.151.00 1.871.151.00 236.231.482.00

17. Gross Electrical Energy Generated (MWH)........

590.920.00 590.920.00 77.479.650.00

18. Net Electrical Energy a

Generated (MWH)........

571.541.00 571.541.00 74.042.513.00

19. Unit Service Factor......

96.07 96.07 77.55

20. Unit Availabilty Factor..

___,9h_. 07-96.07 77.55_

21. Unit Capacity Factor (Using MDC Net)........

94.84 94.84 70.08

22. Unit Capacity Factor (Using DER Net)........

93.12 93.12 68.29

23. Unit Forced Outage Rate..

3.92_

3.92 7.29

24. Shutdowns Scheduled Over Next 6 Months:

NONE

25. If Shutdown at End of Report Period, Estimated Date of Startup:

N/A

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DockGt No 50-309 Unit Name Maine Yanka2 Date:

01 Feb 88 Completed By:

D.A.

Rivard Telephone 207-882-6001 Report Month: January, 1988 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES At the beginning of the month, the unit was at 100% power.

On 5 January, the reactor automatically tripped on loss of load.

t On 6 January, the unit was phased to the grid.

The unit reached 100% power on 7 January.

On 19 January, power was reduced temporarily to 99.5% during the recovery of a dropped CEA.

On 27 January, power was reduced to approximately 99% to allow the implementation of a new calorimetric algorithm in the plant 3

computer.

Power was returned to 100% on 28 January.

The unit was at 100% power at the end of the month.

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AVERAGE DAILY UNIT POWER LEVEL FOR JANUARY 1988 Docket No.:

50-309 Unit:

Maine Yankee Date:

01/Feb/88 Completed By:

D.A.

Rivard Telephone 207-882-6321 n="

Avg. Daily Power Level Day Avg. Daily Power Level (MWe-Net)

(MWe-Net) 806 16 803 2

807 17 804 3

803 18 803 4

806 19 804 5

95 20 804 6

428 21 806 7

802 22 800 8

804 23 806 i

I 9

805 24 806 10 803 25 805 11 801 26 806 12 803 27 800 13 802 28 798 14 804 29 797 15 803 30 798 31 798 i

0

UNIT SHUTDOWNS AND POWER REDUCTIONS Dockot No.:

50-309 FOR JANUARY 1908 Unit M ina Ycnkoa Date:

01/Feb/88 Completed By:

D.A.

Rivard Telephone:

207-882-6321 Page 1 of 1 i

Number 26-88-10 uate 880105 F

Duration (Hours) 29.2 Reason (2)

A Method (0) 3 LER #

88-001 System Code (4)

HH Component Code (5)

INSTRU-E Failed drain tank level switch tripped heater drain tank pump Cause and causing trip of Corrective turbine feed pump, Action which trips main generator. Reactor tripped on loss of load. Level switch was repaired.

i 1.

TYPE:

2.

REASON: (cont) 4.

SYSTEM CODE:

(F)orced F-Admit :i str ati ve Exhibit G-Instructions (S)cheduled G-Operational Error for PreparrU an of Date H-Other (Explain)

Entry SheEL. for 2.

REASON Licensee Event Report A-Equipment Failure O.

METHOD:

(LER) File (NUREG.0161)

B-Maintenance or Test 1-Manual C-Refueling 2-Manual Scram 5.

COMPONENT CODE:

D-Regulatory Restriction 0-Automatic Scram Exhibit I-Same source E-Op er at or Training &

4-Other (Ex pl ai n) as above.

License Examination i

1

MaineVankee i

=EUaKE ELECMCov FOR VA NE SiNCE W2 EotSCN DRIVE. AUGUSTA MAINE 04330. ROD 623 3521 i

i February-11, 1988 HN-88-15 G0H-88-33 i

United States Nuclear Regulatory Commission Attention: Document Control Desk I

Washington, D. C.

20555

References:

(a) License No. DPR-36 (Docket No. 50-309)

(b) NUREG-0020, Licensed Operating Reactors Status Summary Report

Subject:

Maine Yankee Monthly Statistical Report Gentlemen:

Enclosed you will find the Monthly Statistical Report for the Maine Yankee Atomic Power Station for January, 1988.

Very truly yours, MAINE YANKEE

. S dh 12Vf f

G. D. Whittier, Manager i

Nuclear Engineering and Licensing GDH/pib Enclosure cc: Mr. Richard H. Hessman Mr. William T. Russell Mr. Pat Sears Hr. Cornelius F. Holden i

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6 9599L-LHO

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