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Category:MONTHLY OPERATING ANALYSIS REPORT
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[Table view] Category:TEXT-SAFETY REPORT
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n l_, MAY 7 1935 Docket No. 50-309 Date 850503 OPERATING DATA REPORT Completed By K.L. Embry Telephone 207-882-6321
- 1. Unit Name................. Maine Yankee
- 2. Reporting Period..........Aoril 1985
- 3. Licensed Thermal Power (MWt)............. 2630
- 4. Nameplate Rating (Gross MWe)............. 864
- 5. Design-Electrical Rating (Net MWe)....... 825
- 6. Maximum Dependable Capacity (Gross MWe).. 850
- 7. Maximum Dependable. Capacity (Net MWe).... 810
- 8. If Change's 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-Restr.ictions, If Any......
THIS MONTH YR.-TO-DATE CUMULATIVE
- 11. Hours in Reporting Period 719.00 2,879.00
- 12. Number of Hours Reactor Was Critical 711.70' 2,864.10 88,164.64
- 13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
- 14. Hours Generator On-Line 711.70 2,855.50 85,565.20
- 15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
- 16. Gross Thermal Energy Generated (MWH) 1,846,778.00 7,089,358.00 192,398,272.00
- 17. Gross Electrical Energy Generated (MWH) 619,120.00 2,371,830.00 '63,045,110.00
- 18. Net Electrical Energy Generated (MWH) 599,235.00 2,292,187.00 60,124,079.00
- 19. Unit Service Factor 98.98 99.18 78.25
- 20. Unit Availability Factor 98.98 99.18 79.10
- 21. Unit-Capacity Factor (Using MDC Net) 102.89 98.29 69.84
- 22. Unit Capacity Factor (Using DER Net) 101.02 96.51 67.94
- 23. Unit Forced Outage Rate 1.02 0.82 7.07
- 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration):
An eight week refueling shutdown is scheduled to start August 17, 1905.
- 25. If Shutdown at End of Report Period, Estimated Date of Startup: 1 May 85
- 26. Units in Test Status (Prior to Commercial Operation):
Forecast Achieved Initial Criticality ________ ________
g Initial Electricity _ _ _ _ _ _ _ ___ ________ ;
Commercial Operation _ _ __ _ _ _ ________ l 8507180002 850430 PDR ADOCK 05000309 R (,9 G - >
AVERAGE DAILY UNIT POWER LEVEL Docket No. 50-309 Unit Maine Yankee Date 850503 Completed By K. L. Embry Telephone 207-882-6321 MONTH Aoril 1985 Day Average Daily Power Level Day Average Daily Power Level (MWe-Net) (MWe-Net) 1 ...................... 853 16...................... 852 2....................... 849 17...................... 851 3....................... 853 19...................... 853 4....................... 852 19...................... 850 5....................... 849 20...................... 851 6....................... 853 21...................... 851 7....................... 852 22...................... 853 8....................... 774 23...................... 853 9....................... 666 24...................... 850 10...................... 836 25...................... 852 11...................... 851 26...................... 851 12...................... 852 27...................... 852 13...................... .852 28..........,............ 816 14...................... 850 29...................... 851 15...................... 852 30...................... 588 Instructions:
On This Format, List the Average Daily Unit Power Level in MWm-Net for Each Day in the Reporting Month. Compute to the Nearest Whole Megewatt.
- - .
- UNIT SHUTDOWNS AND POWER REDUCTIONS Docket No. 50-309 Unit Maine Yankee Date 850503 Completed By K.L. Embry Telephone 207-882-6321 Report Month April 1985 No. LR to 70% ! LR to 63% ! 2-85-8 Date ! 850408 I 850409 i 850430
_ - - - -_ _l - - - - - - . - - . _ - - _ - -I -
l -
! l Type (1) i F l F i F
___=- .______l --
1 .- - - - - - -
! ! I Duration (Hrs)! O O l 7.3
-- i _ - - _ - --
__i -- - ----- __
Rpason(2) 1 B B l H
^
! l---
! _ - _ __ _ _ _ = = - - - - _ _ _
Mathod(3) : N/A i N/A i 3
-I s : 1 LER # I N/A : N/A 85-003-00
=_ _--
=__.______________ _ _ _ _ . ___ . .__ _ _ _ . _=-
l l 1 System Code (4)I HH ! HH ! HH
==- _- i_____- = - - _. = j _= -l- - - - - - ____
l . .
Component i HTEXCH-D HTEXCH-D ! INSTRU-T Code (5) I i 1
____ ._____-- I . - - - -
i l l
! Reduced power i Reduced power to IWhile working on the I to unplug the "A" ! repair faulty l P-2C low suction I Circ Water Amertap ! valve positioner ont pressure trip I screen. Completed i HD-A-180. l contact, a technician Cause and ! Turbine Valve Testing! Icaused an inadvertant Corrective land Excess Flow Checkt llow suction pressure Action ! Valve Testing. I ! signal which tripped
- i i the Turbine. The 1 l reactor tripped i ! l on Loss of Load.
l l l
. I i i
! l
- 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
p Docket No. 50-309 Unit Maine Yankee Date 850503 Completed by K.L. Embrv Telephone 207-882-6321 Report Month Aoril 1985
SUMMARY
OF OPERATING EXPERIENCES At the beginning of the month the plant was at 100% power.
On 8 April, power was reduced to 80% due to a plugged Amertap screen on-the "A" waterbox.-The "A" screen was cleaned and all waterboxes were backflushed. Turbine Valve Testing and Excess Flow Check Valve Testing were also completed.
On 9 April, only a few hours after 100% power was achieved, power was reduced to 63% to repair a faulty positioner on HD-A-180. A power level of.63% was selected to prevent excessive vibrations in the Heater Drain Tank high level dump line.
On 10 April, the plant was at 100% power.
On 30 April, power was reduced to 95% in order to replace 3 blown generator Exciter Fuses.
On 30 April, while at 95% power, a reactor trip occurred on a loss of load. While working on the P-2C low' suction pressure trip contact, a technician caused an inadvertant low pressure signal which tripped the turbine.
The p'lant was at 0% power for the remainder of the month.
4 I
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EDISC N DRIVE MAIRE HARHFE ATOMICPOWERCOMPARUe ava uSra, u><nE oaa3s
[; (207) 623-3521 9
May 6, 1985 MN-85-86 GDW-85-133 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. DPR-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 April, 1985.
Very truly yours, MAINE YAM (EE AT0pIC POWER COM3ANY
})//WW G. D. Whittier, Manager Nuclear Engineering and Licensing GDW/bjp Enclosures cc: Mr. James R. Miller Dr. Thomas E. Murley Mr. Cornelius Holden I
i 5619L-RMN J