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Category:MONTHLY OPERATING ANALYSIS REPORT
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[Table view] Category:TEXT-SAFETY REPORT
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l l MAINE YANKEE NUCLEAR POWER STATION
) MONT}lLY STATISTICAL REPORT 78-10 l FOR Tile MONTil 0F OCTOBER,1978 i
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OPERATING DATA REPORT 4
2 DOCKET NO. 50-309
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DATE 7R1110 I C051PLETED BY RR Siogren TELEPllONE r6171 %6-9011 x2281-i OPERATING STATUS hiaine Ynnkee N"I'*
f 1. Unit Name:
4 2. Reporting Period: October 1978 l
2630 Time change during the
- 3. Licensed Thermal Power ($1Wt):
- 4. Nameplate Rating (Gross 51We):
864 month of October
- 825
- 5. Design Electrical Rating (Net 51We): .
~n> 0 i 6. Slaximum Dependable Capacity (Gross $1We):
S10 j 7. 51aximum Dependable Capacity (Net SIWE);
' 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons:
i As a result of changing the licensed Thermal power from 2440 MWt to 2630 htWt items y 4, 5, 6 and 7 have changed as shown.
- 9. Power Level To which Restricted If Any (Net $1We): 864 MWe approximately 97"o Because of the maximum allowable steam flow through
- 10. Reasons For Restrictions,1f Any:
the L. P. Turbine.
This 31onth Yr.-to Daie Cumulatise i1. flours in Reporting Period 7 i ti 7 290 742 6,0b2.43 43,591.23
- 12. Number Of Ilours Reactor Was Critical 0 0 0
- 13. Reactor Reserve Shutdown llours
- 14. Flours Generator On Line 700.32 5,917.19 , 42;075.19 0 0 o
- 15. Unit Reserve Shutdown flours 1,620,530 13,284,912 87,726,718 .
- 16. Gross Thermal Energy Generated (51Wil) 550,350 4,406,500 28,644,670
- 17. Gross Electrical Energy Generated ($1WH) _
524, M " 4,156,699 27,119,970
- 18. Net Electrical Energy Generated (51WH) 81 1 '
94 80.3
- 19. Unit Senice Factor
- 20. Unit Availability Factor 94 81.1 80.3
- 21. Unit Capacity Factor (Using 51DC Net) 86.9 74.6 66 85.3 72.1 65.4
- 22. Unit Capacity Factor (Using DER Net) 0 4.6 3.6
- 23. Unit Forced Outage Rate
- 24. Shutdowns Scheduled Oser Next 6 Stonths (Type.1) ate.and Duration of Each):
- 25. If Shut Down At End Of Report Period. Estimated Date of Startup:
- 26. Units in Test Status (Prior to Commercial Operation): Forecast Achiewd INITIAL CRITICALITY
, INITIA L ELECTRICITY C05151ERCI A L OPER ATION (9/77)
AVERAGE DAILY UNIT POWER LEVEL DOCKET No. 50-309 UNIT blaine Yankee DATE 'S1110 CONtPLET ED BY R.ht. Sj gren TELEP110NE (617) 366-9011 x2261 510NTil October 1978 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (31We-Net) ($1We Net) 592 g7 756 g
594 801 3 g 593 804 3 39 593 813 4 20 83 820 5 21 821 6 22
/
291 821
\ 7 33 I'72 824 8 24
' 4 827 9 25 10 26 766 826 !
!I 27 770 826 12 33 825 13 784 29 799 825 14 30 82.5 15 3; 794 16 INSTRUCTIONS On this forrnat. list the average daily unit power level in h!We Net for each day in the reporting month. Compute to the nearest whole megawatt.
(9/77 )
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DOCKET NO. so_309 UNIT Maine Yankee DATE 781110 COMPLETED llY R.M. Sj gren TELEP110NE (617) 366-9011 x2281 REPORT MONTil October 1978 SUSNARY OF OPERATING EXPERIENCES At the beginning of this month the plant was operating ats 69% due to the i failure of one of the half-capacity main transformers at the end of August .
The remaining transformer was uprated to allow s69% output while preparations were made to borrow and install a spare transformer.
l On October 5, the plant was taken off-line to tie in the borrowed transformer. l After about a 2-day outage the plant returned to power, now utilizing both I transformers.
Power escalation was maintained slow and additional Physics Testing was performed at N 93%. This was equivalent to the old license power level of 1 2440 MWth.
On October 17 breaker problems on the 345 KY distribution system necessitated i a load reduction to N68%. Following correction of this problem, the plant l again escalated power and at 1100 hrs. on October 21 the plant was stabilized at 864 MWe gross. This related tos97% reactor power. The limit of 864 MWe is based on the loading limit for the low pressure turbine blading. Evaluations are presently being conducted to cetermine if additional loading is possible.
The plant remained at this power level for the remainder of the month.
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DOCKET NO. 90 ;no UNIT SilUlDOWNS AND POWER REDUCTIONS Maine i,inkee UNIT NAM E DATE 'R1110 COMPLETED !!Y R M. Sincren REPORT MONTil October 1978 TELEPIIONE (617) 3h6'-9011 x 22S1 t.
= c, = -,,"5 c
No. E. f$ ! ? 5N C"5CC I*C "'
bl $4 Cause & Correctise Dat e s 53 0 53* il "l Action to ce cc Report u mo j CU Prevent Recurrence s a :3 6,
3-78-4 10-5-78 S 44.68 11 1 NA EB TRANS Scheduled shutdown to tie in the to " borrowed" main trans former.
10-7-78 4
L.ll. 10-17-78 F 7.25 11 1 NA EA CKTBKR 345 KV breaker problems external l to 685 to Maine Yankee.
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i I 2 3 4 F: Forced Reason : Method: Exhibit G - Inst ructio+is S: Sched uled A-Eq:ipment Failure (Explain) 1 -Manual for Preparation of Data
, B-Maintenance or Test 2. Manual Scram. Entry Sheets for Licensee C-Refueling 3- Automatic Scram. Event Report (1.E R) File (NtlREG-D-Regulatory Restriction 4-Other ( Explain) 01611 E-Operator Training & License Examination F-Ad minist rative 5 G-Operational Eiior (lixplain t Exhibit I - Same Source
, l'1/77) 11-O:her ( E xplair ;
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