ML20126H637

Monthly Operating Rept for Mar 1985

ML20126H637
Person / Time
Site:	Maine Yankee
Issue date:	03/31/1985
From:	Embry K, Whittier G Maine Yankee
To:	Hatfield R NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
5386L-RMN, GDW-85-103, MN-85-66, NUDOCS 8506100374
Download: ML20126H637 (6)

Text

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' Docket No.:50-309

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OPERATING: DATA. REPORT Completed By?K.L. Embry 5;

Date 850405

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. Telephone 207-882-6321 L1. UnitrName....'.............' Maine Yanken-(2.jReporting Period.......... March 1985 r

cf3.zlicensed..ThermalLPower '(MWt).............

2630 "f4.fNameplate Rating '(Gross MWe).............

864 z

549Desi~gn< Electrical Rating (Net MWe).......

825 3 6> Ma>(i mum !Dependabl e L Capaci ty (Gross MWe).. 850 l7;fMaximum? Dependable Capacity.(NetcMWe).... 810' "8.fIfjChanges Occur'in Capacity-Ratings.(Items Number 3-7)

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

S9.JPower Lovel~to: Which. Restricted,.If'Any (Net.MWe)

10.( Reasons Lf or Rest ri cti on s, If Any......

THIS MONTH YR;-TO-DATE

. CUMULATIVE fil. f Hours in Reporting - Period 744.00 2,160.00

-12.'c-NumberEof Hours Reactor

' Wss Cri tical 736.40 2,152.40 87,452.94'

'13.cReactor Reserve Shutdown

= Hours 0.00:

0.00 0.00-x14'.fHours GeneratorfOn-Line 727.80' 2,143.80

'84,853.50

15. Unit?Reserye" Shutdown Hoursi O.00 0.00 0.00 s16. Gross?ThermalfEnergy

' Generated ~(MWH)

,1,817,501.00

~.17.. Gross El ectri cal - Energy

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5,242,580.007 190,551,494.00

/" Generated'(MWH) 607,410.00' 1,752,710.00 62,425,990.001 218.; Net. Electrical' Energy r

-Generated'(MWH) 587,079.00 1,692,952.00 59,524,844.00 119.1 Unit Service Factor 97.82 99.25 78.11 l20;_' Unit AOailability. Factor 97.82 99.25:

78.'97 Y21... Uni t Capaci ty = Factor -

(Using MDC' Net) 97.42 96.76 69.62 J22(funit-Capacity Factor

-(Using. DER-Net)-

95.65 95.00 67.72

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23.' Unit Forcedz out' age Rate-2.18 0.75 7.11 6524.; Shutdowns ~ Scheduled!Over Next 6 Months (Type, Date, and Duration):

An1eight1 week refueling shutdown-is scheduled to start

. August 17,=1985.

25. 'If 1 Shutdown -a_t - End : of Repor t.. Peri od, Estimated Data-of Startup:_________

' 26... Uni ts in Test Status. (Pri or to Commercial' Operation):

p Forecast Achieved b

Initial Criticality

Initial 1 Electricity L

CommercialfDperation C

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AVERAGE DAILY UNIT POWER LEVEL

' Docket No. 50-309 Unit Maine Yankee

-Date 850405 Completed By K.

L.

Embry Telephone 207-882-6321 MONTH. March 1985 Day Average Laily Power Level Day Average Daily Power Level (MWe-Net)

(MWe-Net) 1;......................

853

,1'7......................

852 2.......................

851 18......................

851

.3.......................

853 19......................

852 4.......................

853 20......................

737 5.......................

850 21......................

849

.6.-.

851 22......................

673 7.......................

826 23......................

831 S.......................

776 24......................

851 9.......................

541 25......................

852 10.......................

220 26......................

851 11......................

323 27......................

850

.12......................

814 28......................

852 13......................

848 29......................

850 14......................

850 30......................

851 15......................

851 31......................

850 16......................

852

. Instructions:

On This Format, List the Average Daily UniL Power Level in MW3-Nst for Each Day in the Reporting Month. Compute to the Nearest Wholo Megawatt.

.a UNIT SHUTDOWNS AND POWER REDUCTIONS e

Docket No.

50-309 Unit Maine Yankee Date 850405 Completed By K.L.

Embry Telephone 207-982-6321 R:: port Month March 1985 No.

LR to 70%

1-85-S-LR to 80%

.s

. __ - - - - - - = -

Date 850309 050310.

850320 l

Typ3(1)

F F

F Durati on (Hrs) !

O 16.2 O

Reason (2)

B H

B

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-------------------- l Mathod (3) 4 2

l 4

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LER #

N/A 85-002-00 N/A System Code (4)!

HH HH I

HH Component HTEXCH-D HTEXCH-D HTEXCH-D Code-(5)

Reduced power

! Manual Turbine trip i Reduced power for maintenance

! and manual Reactor !to inspect Condenser lof Heater Drain tank ! trip initiated due waterbox A.

! level control valve ! to high Condenser i

Cause and HD-A-1BO, and to differential Corrective inspect Condenser pressure.

l Action waterboxes.

.1.

FsForced 2.

Reason:

3. Method:

SsScheduling 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 E:: amination Licensee Event Report F-Administrative 5.

Exhibit I-(LER) File (NUREG.0161)

G-Operational Error Same Source

• H-Other (Explain)

• Error in procedure used to restore an out of service waterbox.

UNIT SHUTDOWNS AND POWER REDUCTIONS-Docket No.

50-309 Unit Maine Yankee Date 850405 Completed By M.L.

Embrv Telephone 207-882-6321

~Rrport Month March 1985 No.

LR-to 60%

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_____i________

=

Date 850322 i

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Typo (1) 1 F

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. - - - -=-_

I Durati on (Hrs) :

0 I

___ __ ______i.

Reason (2) 1 B

Method (3) 4 I

______._ __ ___i________ __ _______ __

,LER #-

N/A l

l i

System Code (4)I HH

__=

Component HTEXCH-X 1

I Code (5)

I 1

________.__l Reduced power

'l for maintenance

!af Heater Drain tank i level control valve !

Cause and HD-A-1GO.

I Corrective i

Action l

1 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.Oi61)

G-Operational Error Same Source H-Other (Explain)

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.e Docket No.

50-309 Unit Maine Yankee Date 850405 Completed by K.L._ Embrv Telephone 207-882-6321 Report Month March 1985

SUMMARY

DE OPERATING EXPERIENCES At the beginning of the month the plant was at 100% power.

On 8 March power was reduced to 70% to perform maintenance on the Heater Drain Collection Tank level control valve, HD-A-180, and to inspect Condenser water boxes.

On 10 March a manual Turbine trip and a manual Reactor trip were initiated due to high Condenser dif f erential pressure.

Later on 10 March a plant startup and power escalation began.

On 12' March the plant was at 100% power.

On 20. March power was reduced to 80% inorder to remove the Condenser waterbox A from service for inspection and tube plugging.

On 21 March the plant was at 100% power.

On C2 March power was reduced to 60% inorder to remove HD-A-180 from sarvice for repair.

On :1 arch 23 the plant was at 100% power.

,The plant was at 100% power for the remainder of the month.

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EDISCN DRIVE MAME HARHEE ATOMloPOWER00MPARUe nuousrx. uxuus oas3s Cf (207)sc3-3521 O

April 9, 1985 MN-85-66 GDW-85-103 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 Statistical Report for the Maine Yankee Atomic Power Station for March, 1985.

Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY bbN G. D. Whittier, Manager Nuclear Engineering and Licensing GDW/bjp Enclosures cc: Mr. James R. Miller Dr. Thomas E. Murley Mr. Cornelius Holden

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5386L-RMN