ML20137U114

Monthly Operating Rept for Nov 1985

ML20137U114
Person / Time
Site:	Maine Yankee
Issue date:	11/30/1985
From:	Amaral G, Mcgrath R, Whittier G Maine Yankee
To:	Hartfield R NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
GDW-85-304, MN-85-204, NUDOCS 8602190056
Download: ML20137U114 (6)

Text

r Docket No. 50-309 Date 851205 OPERATING. DATA REPORT Completed By G.G. Amaral Telephone 207-882-6321

1. Unit Name................. Maine Yankee 2.' Reporting Period.......... November, 1985

3. Licensed Thermal Power (MWt)............. 2630

4. Nameplate Rating (Gross MWe)............. 864

5. Design Siectrical Rating - (Net MWe) . . . . . . . 825

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

7. Maximum Dependable Capacity (Net MWe).... 810

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

Since Last Report, Give Reasons:.....

.9. Power Level to Which Restricted, If Any (Net MWe) .__ _ _ _ _

10. Reasons for Restrictions, If Any......

THIS MONTH YR.-TO-DATE ' CUMULATIVE

11. Hours in Reporting Period 720 8,016.00

12. Number of Hours Reactor Was Critical 693.36 6,293.18 91,593.72

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 676.23 6,190.93 88,900.63

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1,556,212.00 14,798,082.00 200,106,996.00

17. Gross Electrical Energy Generated (MWH) 528,490.00 4,922,880.00 65,596,160.00

18. Net Electrical Energy Generated (MWH) 504,892.00 4,739,713.00 62,571,605.00

19. Unit Service Factor 93.92 77.23 77.65

20. Unit Availability Factor 93.92 77.23 78.46

21. Unit Capacity Factor (Using MDC Net) 86.57 73.00 69.34

. 22. Unit Capacity Factor (Using DER' Net) 85.00 71.67 67.48

23. Unit Forced Outage Rate 2.23 1.94 6.91

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

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

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

Forecast Achieved Initial Criticality j fh )ghf Initial Electricity. _ ___ ________

Commercial Operation ___ __

____ p 8602190056 851130 PDR R

ADOCK 05000309 PDR I[(

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AVERAGE' DAILY UNIT PCWER LEVEL Docket'No.-50-309 Unit Maine Yankee Date 851205 Completed By G.G. Amaral Telephone 207-882-6321 MONTH November, 1985 ,

Day Average Daily Power Level Day Average Daily Power Level (MWe-Net) (MWe-Net) 1 ...................... 664 16...................... 736 2....................... 771 17......................- .825 3....................... 811 18.....~................ . 835 4.......................- 815 19...................... 837 5....................... 800 20...................... 838 6....................... 361 21....................... 836 7......................., 402 22...................... 765 8....................... 697 23...................... O 9....................... 772 24...................... 259 10...................... 772 25...................... 450 11...................... 779 26...................... 622 12...................... 799 27...................... 705 13...................... 797 28...................... 832 14...................... 807 29...................... 834 15...................... 783 30...................... 833 i

"I i

I b__m___ _____$_. $ _'_ i_ _2_E _ E N'U .* _l _ __.. _I" Y_.' [ 2_ E'Y__._Y^__________2_'_

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{ Docket;No. :50-309' g Lunit Maine. Yankee ,

, :Date 851205 ,

Completedi by RA McGrath ,

e Telephone 207-882-6321

~

Report-Month. ' November lire ,

h is

SUMMARY

QE OPERATING EXPERIENCES l'

}At~the beginning;of the month the plant-was at 76% power.

i' On.4 November pcwer was increased to 96%.

4-

} From 4 to 6 November,_four small load reductions were made due to High 4: Stator. Gas Delta Temperature (dT) in-the Main Generator. Power was stabilized at'81% power L On 6. November at 1128,'the Reactor tripped from 81% power on Loss of Load.

!- This was caused by the f ailure of the -Turbine Driven Feed Pump -Recirc.

l' Valve' Controller.

1

[ On 7 November at 0255, the Unit was Phased-to-Grid and a powWr. increase was

i. etarted. >

1

l. On 8 November at 2200, the Unit was at 90% power. ,

) By 15 November at 1600, the Unit Power was stabilized at 97%.

l l -On 15 November at 2036, Unit Power was reduced to 75% to clean the. ,

. Condenser Waterboxes. This was due to cavitation indicated in one >

l Circulating Water Pump i-On 17 November at 1900, the Unit Power was stabilized at 97%.

I j' On 22 November at 1900, a power reduction at 8.5% per hour to shutdown was commenced to repair RPS'RTD's.

On 22 November at 2224, the Reactor tripped due to the failure of the

Turbine Generator Control System.

f, -

i On 24 November at 0243, the Unit was Phased-to-Grid and a power increase to j- 55% was started.

! On 26 November at 0242, Unit Power was stabilized at 75%.

1

['- On 26 November at 2030, a load reduction from 77% to 55% power was completed-to-remove the Turbine Driven-Main Feed Pump from service due to problems with its Recirc' Valve Controller. .

i On 27 November at 2045, Unit Power was stabilized.at 97%.

. t i- .Th3 plant was at'97% power for the remainder of the month.  !

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UNIT SHUTDOWNS AND POWER REDUCTIONS Page 1 of 2 Decket No. 50-309 Unit Maine Yankee Date 851205 Completed By R.S. McGrath Telephone- 207-882-6321 R port Month November.- 1985 No. I 5-85-9 i LR to 75%  ! 6-85 .

l  !  !

Date 1 851106 I 851115 1 851122

____ _l___ __ -__l_____ __________l___ -_________

l i i Type (1)  ! F  ! F I F f I

=;__=== _--= --

Duration (Hrs)! 15.5 i O I 28.3

__________ __!__ =- - _ - -- ._ l -- _ -= l - --- -

l  ! I Ratson (2) I A  ! B  ! A Msthod(3) * '

! 1 1 3

________== 1 -

-_ ___I _- ____I _______________

l LER # I 85-016 i N/A I 85-0~19

- ___ _l -

- _l______________ -

_I____= ____________

l i I Syctem Code (4)I CH I HH  ! HA

= l I _

___________I__ -_________

! I I Component i INSTRU-C  ! HTEXCH-D  ! INSTRU-C Code (5) i I I

__ __ l - - - - -____ _

- I. --

_________ l l l I I Reactor Trip due to I Load Reduction to i Reactor Trip due to I failure of the  ! clean the Condenser  ! failure of the iTurbine Driven Main  ! Waterboxes.  ! Turbine Generator i Feed Pump Recirc I IController. Component Ccuse and i Valve Controller. I I replaced prior to Corrective i I I start up.

Action i I I I I I I I I I I  !

I I I 4

1. F: Forced 2. Reasons 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) t

UNIT SHUTDOWNS AND POWER REDUCTIONS Page 2.of 2 Docket No. 50-309 Unit Maine Yankee Date 851205 Completed By R.S. McGrath Telephone 207-882-6321 RLport Month November. 1985 No. I LR to 55% 1 J a

l - __i - - - - - - ______

i i i Dste 1 851126 I I

_________  ! _ __ _ - _____l_______ _ -.-____l_______ = _ _ _ _

Type ( 1) I S  ! I i .

• _ a I == ______

! I I Duration (Hrs)! O  ! I

_ _ - - I _ - ___! -- - - - - - - I

-!  ! I-

-Ranson (2)  ! B  !  !

_a____ ____ ' _- -______

!  ! -I M thod(3) I 1 1 1

-____-- I -

!___,________________!_____= _ ____

l l I LER #  ! N/A I I I____ _-- _ _ _ . _ l __ _ -- - - - - -

1 == _

l i I Syetem Code (4)! CH I I

__________- _I___ ____ ____ I___ _____ ____I ___ __ __

l l l Component  ! INSTRU-C I  !

Code (5) l I I

______________l -

--_______________l___ ___________!________________ =

I Power reduction to I 1

! shutdown the Turbine I i i Driven Mair, Feed l I I Pump. I I Ccuse and I  !  !

Corrective  ! I I Action i I I I I I I I  !

I 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) v

o t

EDISON DRIVE MAME HARtiEE lAT0mmPOWERComPARUe nuouSrx, us!NE o<336 gj (207) 623-3521 MO December 12, 1985 MN 85-204 GDW-85-304.

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 No. OPR-36 (Dockt:t 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 Novenber,1985.

Very truly yours, MAINE YANKEE ATOMIC POWER COWANY bh G. D. Whittier, Manager Nuclear Engineering & Licensing GDW/bjp Enclosures cc: Mr. Ashock Thadani Dr. Thomas E. Murley Mr. Cornelius Holden American Nuclear Insurers

' I 6792L-AJP