ML20136G884

Monthly Operating Rept for Oct 1985

ML20136G884
Person / Time
Site:	Maine Yankee
Issue date:	10/31/1985
From:	Amaral G, Whittier G Maine Yankee
To:	Hartfield R NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
6667L-AJP, 6667L-AJP9, GDW-85-289, MN-85-195, NUDOCS 8601080640
Download: ML20136G884 (6)

Text

{{#Wiki_filter:,. _ _ Docket No. 50-309 Date 851115 OPERATING DATA REPORT Completed By G.G. Amaral Telephone 207-B82-6321 1. Unit Name................. Maine Yankee , 2. Reporting Period.......... October, 1985

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

2630

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

864 t 5. Design Electrical Rating (Net MWe)....... 825

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

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

810 ! 8. If Changes Occur.in Capaci.ty~ Ratings (Items Number 3-7) Since Last Report, Give Reasons:..... l

9. Power Level to Which Pestricted, If Any (Net MWe) 1 10. Reasons for RestrictfEns,-If Any......

3 a THIS MONTH YR.-TO-DATE CUMULATIVE

11. Hours in Reporting Period 745 7,296.00 l

12. Number of Hours Reactor Was Critical 191.81 5,599.82 90,900.36 i

j

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00'

~14. Hours Generator On-Line 135.23 5,514.70 88,224.40

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 196,078.00 13,241,870.00 198,550,784.00 j

17. Gross Electrical Energy Generated (MWH) 63,760.00 4,394,390.00 65,067,670.00

18. Not Electrical Energy Generated (MWH) 59,900.00 4,234,821.00 62,066,713.00

19. Unit Service Factor 18.15 75.59 77.55

20. Unit Availability Factor 18.15 75.59 78.36 l

21. Unit Capacity Factor (Using MDC Net) 9.93 71.66 69.23

22. Unit Capacity Factor (Using DER Net) 9.75 70.36 67.37

23. Unit Forced Outage Rate 29.14 1.90 6.95

~

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration):

8601080640 851031 PDR ADOCK 05000309- - PDR R

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

26. Units in. Test Status (Prior to Commerczal Operation):

Forecast Achieved Initial Criticality @ y{ Initial Electricity Commercial Operation

-? - ~ - - - - - UNIT SHUTDOWNS AND POWER REDUCTIONS Page 1 of 2 Docket No. 50-309 Unit Maine Yankee Date 851107 Completed By G.G. Amaral Telephone 207-882-6321 R port Month October, 1985 No. 1-85-9 2-85-9 3-85-9 = - - - --{___ Dato I 851023 851024 l 851025 I I =_I I i Typo (1) l F F I F _. = l - l I Durction(Hrs): 9.4 26.8 i 14.1 - i l 1 Raccon(2) l A A A l l i M2thod(3) 1 3 1 1 1 3 = -_____e i______- _e l i I LER # I 85-015 N/A 85-016 - - - i i __i - .s -- l i Syntam Code (4)1 CH I CB i CD .-= I .a I I Component VALVEX-G PUMPXX-B VALVEX-D Cada (5) I i e i I i Plant Trip due to ! Manual Shutdown of i Plant Trip due to I Low Steam Generator ! plant to repair the Iclosure of #1 Excess llevel, which occurredi Backstop Device on i Flow Check Valve. I while attempting to I

1. 2 RCP.

I Cause attributed to Cause and i maintain Steam I lprocedural inadequacy Corrective Generator Level I ! and personnel error Action ,1 manually. '!during installation I lof the rupture disk. 1 -l i I I I 1 1. F Forced

2. Reason:

3. Method:

S Scheduling A-Equipment Failure 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling ~3-Automatic Scram

4. Exhibit G-Instructions D-Regulatory Restriction 4-Other (Explain) for Preparation of Data E-Operator Training &

Entry Sheets for License Examination Licensee Event Report F-Administrative 5. Exhibit I-(LER) File (NUREG.0161) G-Operational Error Same Source

• H-Other (Explain)

~ M UNIT SHUTDOWNS AND POWER REDUCTIONS Page 2 of 2 Docket No. 50-309 Unit Maine Yankee Date 851105 Completed By G.G. Amaral Telephone 207-882-6321 R:; port Month October. 1985 No. 4-85-9 i - -==- = = ____ l Dsta l 851026

==, 1 l I Typ](1) F I I__ --_==______ l l Duretion(Hrs)i 10.8 l l - l - i_____ __ l R::non (2) 1 A I i I = - - _- ,= M:;thod (3) 3 i a l l l LER # 85-016 i I i i Syatcm Code (4): CD i = - - _ i i Component i VALVEX-D Cada (5) I I _ _ _ _ _ _ _ _ = _ - I - - _ _ ____l - - - - - - Plant Trip due to l l ! closure of #3 Excess i Flow Check Valve. l I i Cause attributed to i Cruze and ! procedural inadequacy! Corrective l and personnel error l' l Action !during installation o! l the rupture disk. 1 I l l l i i I I i l i I 1. F: Forced 2. Reason:

3. Method:

S: Scheduling A-Equipment Failure 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram

4. Exhibit G-Instructions D-Regulatory Restriction 4-Other (Explain) for Preparation of Data E-Operator Training &

Entry Sheets for License Examination Licensee Event Report F-Administrative 5. Exhibit I-(LER) File (NUREG.0161) G-Operational Error Same Source

• H-Other (Explain)

-. ~... -. -. - - - -.. - -.. / AVERAGE DAILY UNIT POWER LEVEL Docket No. 50-309 Unit Maine Yankee Date 851107 Completed By G.G. Amaral Telephone 207-882-6321 MONTH October, 1985 Day Average Daily Power Level Day Average Daily Power Level (MWe-Net) (MWe-Net) 1 0 16...................... 0 2....................... O 17...................... 0 3....................... O 18...................... O 4....................... O 19...................... 0 5....................... 0 20...................... O 6....................... O 21...................... O 7....................... O 22...................... 0 8....................... 0 23...................... O 9....................... O 24....................;. 10 10...................... O 25...................... 24 11...................... O 26...................... 128 12...................... O 27...................... 148 13...................... O 28...................... 370 14...................... O 29...................... 456 15...................... 0 30...................... 682 31....................... 676 f i e O g .y g g g g. g v.- *. * - r - Wr-P t'-

's t .~ Docket No. 50-309 Unit Maine Yankee Date 851107 Completed by G.G. Amaral Telephcne 207-882-6321 ( Raport Month October 1985

SUMMARY

OF OPERATING EXPERIENCEE At the beginning of the month the plant was in a Refueling Shutdown. Sttrtup, scheduled for 15 October, was delayed for Functional Testing of instrumentation and repair of a leak in the Primary Component Cooling system. On 22 October at 0752, the Reactor was made critical and' Low Power Physics ~ Testing was begun. On 23 October at 2040, the Reactor tripped on Low Level in the #3 Steam G:nerator. On 24 October at 0603, the-Unit was Phased-to-Grid for the first time since the 1985 Refueling Outage began. On 24 October at 1000, the Unit was removed from the Grid and the Reactor chutdown to make repairs to the #2 Reactor Coolant Pump Backstop Device. On 25 October at 1248, the Unit was Phased-to-Grid and a power increase was started. On 25 October at 1723, the Reactor and Unit tripped from 25% power when a Rupture Disk failed, allowing the #1 Excess Flow Check Valve to close. On 26 October at 0730, the Unit'was Phased-to-Grid and power increased to 30%. On 26 October at 2302, While soaking at 30% power, the Reactor and Unit tripped when a Rupture Disk failed, allowing the #3 Excess Flow Check Valve to close. On 27 October at 0850, the Unit was Phased-to-Grid and a power increase was otarted. On~2G October at 0640, power was stabilized at 48% for Power Range Physics Tcsting. On 29 October at 1840, a power increase from 48% to maximum was started. On 31 October at 0356, a load reduction from 90% power was started due to a Turbine Load Rejection. The #2 Governor Valve closed unexpectantily from 58% open to 14% open, and the #4 Governor went fully closed from 10% open. Power stabilized at 76%. Tho plant was at 76% power the remainder of the month.

O e EDISON DRIVE MAIRE HARHEE ATOMICPOWERCOMPARUe avausra. ualne o<sas '%([j (207) 623-3521 November 15, 1985 MN-85-195 GDW-85-289 Office of Resource Management United States Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Mr. Richard A. Hartfield, Chief Management Information Branch

References:

(a) License Nc. DPR-36 (Docket No. 50-309) (b) NUREG-0020, Licensed Operating Reactors Status Summary Report

Subject:

Maine Yankee Montnly Statistical Report Gentlemen: Enclosed you will find the Monthly Statistical Report for the Maine Yankee Atomic Power Station for October,1985. Very truly yours, MAINE YANKEE ATOMIC POWER C0f43ANY kbN G. D. Whittier, Manager Nuclear Engineering & Licensing GDW/bjp Enclosures cc: Mr. Edward J. Butcher, Jr. Dr. Thomas E. Murley Mr. Cornelius Holden I sA Y l .\\, 6667L-AJP ..}}