ML20196J105

Monthly Statistical Rept for Feb 1988

ML20196J105
Person / Time
Site:	Maine Yankee
Issue date:	02/29/1988
From:	Rivard D, Whittier G Maine Yankee
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
GDW-88-54, MN-88-25, NUDOCS 8803140156
Download: ML20196J105 (5)

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Dock;t No.:

OPERATING DATA REPORT 50-309 DOto: 02/tter /CJ Completed By: D.A. divard Telephone: 207-882-6321

1. Unit Name....................................... Maine Yankee

2. Reporting Pericd................................ February 1988

3. Licensed Thermal Power (MWt).................... 2630 4 Nameplate Rating (Gross MWe)..................., 864

5. Design Electrical Ra';ing (Net MWe)............ . 825

6. Maximum Dependable Capacity (Gross MWe)......... 850

7. Maximum Dependable Capacity (Net MWe)........... 810 C. If Changes in Capacity Ratings (Items Number 3-7)

Since Last Report, Give Reasons:

• NO CHAMC55

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9., Power Lowwl to Which Restricted, if Any (Net MWe) *

10. Reasons for Restrictions, if Any:

THIS MONTH YEAR-TO-DATE CUMULATIVE

11. Hourn In Reporting Period 696.00 1.440.00

12. Number of Hours Reactor Was Critical........... 696.00 1.423.92 107.277.24

13. Reactor Reserve Shutdown Hours.................. 0.00 0.00 0.00

14. Hours Generator On-line.. 696.00 1.410.78 104.165.86

15. Unit Reserve Shutdown Hours.................. 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH)........ 1.801.731.00 3.672.882.00 230.033.213.00

17. Gross Electrical Energy

• Generated (MWH)........ 564.700.00 1.155.620.00 70.044.350.00

18. Net Electrical Energy Generated (MWH)........ 545.939.00 1.117.480.00 74.588.452.00

19. Unit Service Factor...... 100.00 97.97 77.67

20. Unit Availabilty Factor.. 100.00 97.97 77.67

21. Unit Capacity Factor (Using MDC Net)........ 96.84 95.81 70.22

22. Unit Capacity Factur (Using DER Net)........ 95.08 94.06 68.43

23. Unit Forced Outage Rate.. 0.00 2.03 7 2H_

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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8803140156 880229 PDR ADOCK 05000309 f,[' b' i

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Docket No: 50-309 Unit Name: Maine Yankee Date: 01/ MAR /88 Completed By: D.A. Rivard Telephone: 207-882-6321 4

Report Month: February , 1988 NARRATIVE

SUMMARY

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

On 3 February, power was reduced to 75% tu perform turbine valve and excess flow check valve testing, and maintenance on "B" travelling water screen.

On 4 February, power was retur.ud to 100%.

Later on 4 February, power was reduced to 49% in order to isolate a leak in the main turbine control oil system.

Repairs to the turbine control cil system were complete and power was returned to 100% on 5 February.

On 29 February, power was reduced to 91% during the recovery of a dropped CEA and then returned to 100%

At the end of the month, the unit was operating at 100% power.

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AVE. RAGE' DAILY UNIT POWER LEVEL FOR FEBRUARY 1988 Docket No.: 50-309 Unit: Maine Yankee Date: 02/ Mar /88 Completed By: D.A. Rivard Telephone: 207-882-6321 o

Day Avg. Daily Power Level Day Avg. Daily Power Leve:

(MWe-Net) (MWe-Net) 1 .................... 799 16 .................... 797 2 .................... 798 17 .................... 797 3 ,

.................... 645 18 .................... 801 4 .................... 727 19 .................... 801~

5 .................... 651 20 .................... 793 6 .................... 796 21 .................... 798 7 .................... 796 22 .................... 796 8 .................... 799 23 .................... 798 9 .................... 799 24 .................... 796 10 .................... 794 25 .................... 797 11 .................... 799 26 .................... 800 12 .................... 798 27 .................... 795 13 .................... 800 ,

28 .................... 797 14 .................... 790 29 .................... 793 15 .................... 798 1

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' NIT' SHUTDOWNS AND POWER REDUCTIONS Docket No.: 50-309

. FOR FEBRUARY 1988 Unit: Maine Yankee Date: 02/ Mar /88 Completed By: D.A. Rivard Telephone: 207-882-6321 Page: 1 of 1 Number L. R. to 75% L. R. TO 49%

Dnte 880203 880204 Type (1) S F Duration (llours) O O Raason (2) B A Msthod (3) 4 4 LER # N/A N/s System

, Code (4) HA HA Component Code (5)_. ,

VALVEX-C VALVOP-C Reduced power for Power was reduced turbine valve and to isolate a leak excess flow check in the turbine valve testing, and control oil Cause and "B" travelling system. The weld-Corrective water screen joint was repaired Action maintenance. and the unit returned to 100%

power.

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1. TYPE: 2. REASON: (cont) 4. SYSTEM CODE:

(F)orced F-Administrative Exhibit G-Instructions (S)cheduled G-Operational Error for Preparation of Data l H-Other (Explain) Entry Sheets for >

2. REASON Licensee Event Report A-Equipment Failure 3. METHOD: (LER) File (NUREG.0161)

B-Maintenance or Test 1-Manual l- C-Refueling 2-Manual Scram 5. COMPONENT CODE:

D-Regulatory Restriction 3-Automatic Scram Exhibit I-Same source E-Operator Training & 4-Other (Explain) as above.

l License Examination

. . 4 MaineYankee REttABLE ELECTAICITY FOR MAINF SINCE 1972 EDISON DRIVE . AUGUSTA, AINE 04330 .(207) 623-3521 March 8, 1988 HN-88-25 GDH-88-54 United States Nuclear Regulatory Commission Attention: Document Control Desk Hashington, 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 Haine Yankee Atomic Power Station for February, 1988.

Very truly yours, HAINE YANKEE 0)/$ AV G. D. Whittier, Manager Nuclear Engineering and Licensing GDH/pib Enclosure cc: Mr. Richard H. Hessman Mr. Hilliam T. Russell Mr. Pat Sears Mr. Cornelius F. Holden 9599L-LHO

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