ML20132G837

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Monthly Operating Rept for Jul 1985
ML20132G837
Person / Time
Site: Maine Yankee
Issue date: 07/31/1985
From: Taylor J, Whittier G
Maine Yankee
To:
NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
5873L-RMN, GDW-85-215, MN-85-147, NUDOCS 8510010637
Download: ML20132G837 (5)


Text

.

s Docket No. 50-309 Date 850a05 OPERATING DATA REPORT Completed By T.R. Anderson Telephcne 207-992-6321

'1.

Unit Name................. Maine Yankee f2. Reporting Period.......... July, 1985 3.

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

2630 4.

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

864 5.

Design Electrical Rating (Net MW2).......

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 Repert, 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 744 5,087.00
12. Number of Hours Reacter Was Critical 726.73 5,025.23 90,325.77
13. Reactcr Recerve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 723.95 4,997.75 G7,707.45
15. Unit Re;crve Shutdown Hours 0.00 0.00 0.00
16. Grass Thcrmal Energy Generated (MWH) 1,652,480.00 12,276,715.00 197,585,629.00
17. Grces Electrical Energy Generated 1MWH) 534.290.00-4,035,720.00 64,759,000.00 le. Net Electrical Energy Generated (MWH) 514,840.00 3,940,332.00 61,772,224.00

,19.

Unit Service Factor 97.31 98.25 78.62

20. Unit Availability Facter 97.31 98.25 79.46 I21. Unit Capacity Factor (Using MDC Net).

85.43 95.63 70.28

22. Unit Capacity Factor j

(Using DER Net) 83.88 93.39 63.39 l23. Unit Forced Outage Rate 2.69 1.01 6.93 l24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duraticn):

An eight week refueling shutdown is scheduled to start August 17, 1985.-

7'c) # !

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

126. Units in Test Status (Pri or to Commercial Operation):

~

Ferocast Achieved JJ Ccm..m r c i a-1 0 p e r o"s. cn 8510010637 850731

//

Initial Criticality Initial Electricity PDR ADOCK 05000309 R

PDR

N AVERAGE DAILY UNIT POWER LEVEL Docket No. 50--309 Unit Maine Yankee Date 850805 Completed By T.R. Anderson Telephone 207-882-6321 MONTH July, 1985 Day Average Daily Pcwer Level Day Average Daily Power Level (MWe-Net)

(MWe-Net) 1 476 16......................

707 2.......................

179 17......................

713 3.......................

704 18......................

709 4.......................

772 19......................

709 5.......................

773 20......................

704 6.......................

770 21......................

702 7.......................

766

'22......................

695 8.......................

760 23......................

696 9.......................

756 24......................

693 10......................

760 25......................

688 11......................

748 26......................

683 1m......................

7.v.,

n7......................

68m

~

13......................

734 29......................

671 14.......................

733 29......................

672 20......................

/eu 0

0......................

667 94 LL*

U1.......................

Q R E8 i

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=

J UNIT SHUTDOWNS AND POWER REDUCTIONS Docket No.

50-309 Unit Maine Yanfeee Date 850805 Completed By T.R. Anderson Telephone 207-G92-6321 1

Report Month July. 1995 No.

~

3-85-8 l

!____________________l

_ - - = = - = - - - - -

Date 850701 l

I l

Type (1)

F i

_=

e Durati on (He s) 20.05 l

l

=

a e

i Rs ason (2)

H

- ___ l i

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Me thod (3) 3 i _ _- -

LER #

85-007

=-___

System Code (4):

HH l

l

~

Com,anent INSTRU-R Code (5)

!-While calibrating l

l S/G #3 Feed Flow I

l Recorder,a technician:

l

' inadvertently j

-l.

j Causa and

! generated a loss of !

i-Corrective

flow signal, which Action resulted in a l-1 turbine trip.

l

~!

Reacto~r tripped on loss of load.

l l

I i

l

            • t**********************************************************************t*

1.

F: Forced-2.-Reason:

3. Method:

S:Gcheduling A-Equipment Failure 1-Manual B-Maintenance or Test-2-Manual Scram l

j C-Refueling 3-Automatic Scram 4.

Exhibit G-Instructions D-Regulatory Restriction 4-Other (Explain)

[

for Freparation of Data E-Operator Training &

Entry Sheets ~for License. Examination-4 l

Licensee Event Report F-Admi n i strat_i ve.

5.

Exhibit I-(LER) ' Fi l e (NUREG. 0161 ) -

G-Operational Error Same. Source

(_

  • H-Other (Exclain)

.'t3 Docket No.

50-300 Unit Maine Yankee Date 850805 Completed by J.M. Taylor Telephone 207-982-6321 Report Month July 1995

SUMMARY

QE OPERATING EXPERIENCES At.the beginning,of the month the plant was operating at 95% power and continuing To coastdown.

On' 1 July, the reactor tripped due to a turbine trip.

While calibrating the

  1. 3 Steam Generator Feed Flow Recorder, an I&C technician accidentally generated a loss of flow signal, which resulted in a turbine trip.

On 2 July, the generator was phased to the grid and power was increased to 69%.

On 3 July, power reached 93% and To coastdown continued to the end of the month.

4 i

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O

-4 EDISON DRIVE MAIRE HARHEE ATOMICPRL1/ERCORIPARUe avous1a, ualne osaas I

w (207) 623-3521 e

%e August 9, 1985 MN-85-147 GDW-85-215 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 (Docket No. 50-309)

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

Subject:

Maine Yankee Monthly Statistical Report

Dear Sir:

Enclosed you will find the Monthly St,(~tistical Report for the Maine Yankee Atomic Power Station for July,1985.

Very truly yours, MAINE YANKEE ATOMIC POWER COWANY bW G. D. Whittier Manager, Nuclear Engineering & Licensing GDW/bjp Enclosures cc: Mr. Edward J. Butcher, Jr.

Dr. Thomas E. Murley Mr. ' Corr.elius Holden

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5873L-RW