ML20133N070

Monthly Operating Rept for Dec 1996 for Maine Yankee

ML20133N070
Person / Time
Site:	Maine Yankee
Issue date:	12/31/1996
From:	Stewart Bailey, Hebert J Maine Yankee
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
JRH-97-14, MN-97-12, NUDOCS 9701230151
Download: ML20133N070 (5)

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. MaineYankee RELIABLE ELECTRICITY SINCE 1972 l

329 BATH ROAD = BRUNSWICK. MAINE 04011 + (207) 798-4100 i

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l January 13,1997 i MN 12 JRH-97-14 l l UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk l Washington, DC 20555

References:

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

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

Subject:

Maine Yankee Monthly Statistical Report - December 1996

! Gentlemen:

Enclosed please find the December 1996 Monthly Statistical Report for Maine Yankee. l l

If you have any questions, please do not hesitate to contact me.

I Very truly yours, j ames R. Hebert, Manager Licensing & Engineering Support Department SJB l 1 Enclosures  !

c: Mr. Hubert Miller f Mr. J. T. Yerokun i 1

Mr. Daniel H. Dorman Mr. Patrick J. Dostie /[ h N g 1

Mr. Uldis Vanags i

i 9701230151 961231 PDR ADOCK 05000309 R PDR

l OPERATING DATA REPORT Docket No.: 50-309 Date: 14/Jan/97 -

l Completed By: S. J. BAILEY  ;

! Telephone: 207-798-4241 l

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

2. Reporting Period................................ December 1996

3. Licensed The rmal Power (HWt ) . . . . . . . . . . . . . . . . . . . . 2700  ;

l 4. Nameplate Rating (Gross HWe).................... 920 '

! 5. Design Electrical Rating (Net MWe).............. 870

6. Maximum Dependable Capacity (Gross HWe)......... 900

7. Maximum Dependable Capacity (Net HWe)........... 860

8. If Changes in capacity Ratings (Items Number 3-7)  ;

Since Last Report, Give Reasons:

NO CHANGES l

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9. Power Level to Which Restricted, if Any (Net HWe) 795

10. Reasons for Restrictions, if Any

l By NRC Confirmatory Order dated Jan. 3, 1996, Maine Yankee is l

restricted to 2440 MWt. A new computer code for Small Break LOCA j is beina evaluated at Maine Yankee to allow operation to 2700HWt l 1

THIS HONTH YEAR-TO-DLTE CUMULATIVE 1

11. Hours In Reporting Period 744.00 8,784.00 l

12. Number of Hours Reactor i j Was Critical........... 121.40 t.864.38 163,902.19 i

13. Reactor Reserve Shutdown Hours.................. _ 0.00 0.00 0.0e

14. Hours Generator On-line.. 121.40 6,565.75 159,020.30

15. Unit Reserve Shutdown l Hours.................. 0.00 0.00 0.00 l l 16. Gross Thermal Energy l Generated (HWH)........ 281,759.00 15,667,061.00 377,611,152.00 l 17. Gross Electrical Energy I Generated (HWH)........ 94,468.00 5,281,388.00 124.570,384.00 l 18. Net Electrical Energy l Generated (HWH)........ 91,116.00 5,062,917.00 119.543,416.00 l 19. Unit Service Factor...... 16.32 74.75 75.14 I

20. Unit Availabilty Factor.. 16.32 74.75 75.14

21. Unit Capacity Factor (Using HDC Net)........ 14.24 67.01 69.72

22. Unit capacity Factor (Using DER Net)........ 14.08 66.24 68.26

23. Unit Forced Outage Rate.. 83.68 21.82 8.46

24. Shutdowns Scheduled Over Next 6 Honths: NONE l

25. If Shutdown at End of Report Period, Estimated Date of Startup: 2/04/97 3

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i AVERAGE DAILY UNIT POWER LEVEL 4

FOR DECEMBER 1996 i Docket No.: 50-399 Unit Maine Yankee Date: 19/Jan/97 i

Completed By: S. J. BAILEY Telephone: 297-798-4241 Day Avg. Daily Power Level Day Avg. Daily Power Level; (MWe-Net) (MWe-Net) 1 .................... 792 16 .................... 9 1

2 .................... 778 17 .................... 3 i

j 3 .................... 681 18 .................... 9 4 .................... 769 19 .................... 9 a

s 5 .................... 772 20 .................... O 6 .................... 13 21 .................... 9

) 7 .................... 9 22 .................... 9 8 .................... 9 23 .................... 9

! 9 .................... 9 24 .................... 9 19 .................... 9 25 .................... 9 11 .................... 9 26 .................... 9 1 12 .................... 9 27 .................... 9 2 13 .................... 9 28 .................... O 14 .................... 9 29 .................... 9 1 15 .................... 9 30 .................... 9 4

31 .................... 9

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. 1 UNIT SHUTDOWNS AND POWER REDUCTIONS Docket No.: 50-309 FOR DECEMBER 1996 Unit: Haine Yankee Date: 15/Jan/97 Completed By: S. J. BAILEY Telephone: 207-798-4241 Page: 1 of 1 Number L.R. to 90.3% L.R. to 80% 06-96-15 Date [ 960124 l 961202 961205 4

Type (1) [ F h S j F l Duration (Hours) 0 0 -622.6 Reason (2)- I D [ B J D Hethod (3) l 4 4 1 1 LER # l N/A h N/A q 96-038 System Code (4) ZZ HH IA Component Code (5) ZZZZZZZZ PUMPZZ-B CKTBRK-A By NRC Confirma- Power reduction Manually offline tory Order, Maine for auxiliary due to reactor Yankee is feedwater pump, trip button and restricted to P-25B functional breaker cable sep-Cause and 2440 MWTh until a testing. The unit aration issue.

Corrective new computer code returned to 2440 Outage continued Action is evaluated to HWTh on December the rest of month allow operation 4. to review other at 2700 HWTh. cable separation issues.

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

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

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

B-Haintenance or Test 1-Manual 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.

License Examination

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t Docket No: 50-309 Unit Names Maine Yankee Date: JAN191997 Completed By: S.J. Bailey Telephone: 207-798-4241 Report Months December, 1996 '

! NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES i

I The unit operated at 2440 MWTh until December 2 when power was reduced I to 80% for auxiliary feedwater pump, P-25B functional testing. The l unit returned to 2440 MWTh on December 4 where it remained until i

December 5 when the unit was manually taken offline due to a reactor trip button and breaker cable separation issue. Outage continued the remainder of the month to review other cable separation issues.

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