ML20147B627
| ML20147B627 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 12/11/1978 |
| From: | Sjogren R Maine Yankee |
| To: | |
| Shared Package | |
| ML20147B626 | List: |
| References | |
| NUDOCS 7812150357 | |
| Download: ML20147B627 (4) | |
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MAINE YANKEE NUCLEAR P0h'ER STATION MONTilLY STATISTICAL REPORT 78-11 FOR Tile MONTil 0F NOVEMBER, 1978 i
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OPERATING DATA REPGRT DOCKET NO.
50-309 DATE Maine Yankee COMPLETED BY 781211 TELEPil0NE (6171 366 9011 X2281 OPERATING STATUS
- 1. Unit Name:
Maine Yankee Notes November, 1978
- 2. Reporting Period:
2630
- 3. Licensed Thermal Power (MWt):
864
- 4. Nameplate Rating (Gross MWe):
825
- 5. Design Electrical Rating (Net MWe):
0"
- 6. Maximum Dependable Capacity (Gross MWe):
810 7 Maximum Dependable Capacity (Net MWe):
i
- 8. If Changes Occur in Capacity Ratings (items Number 3 Through 7) Since Last Report, Give Reasons:
- 9. Power Level To Which Restricted,1f Any (Net MWe):
864 MWe approximatelv 97"t,
- 10. Reasons For Restrictions. lf Any:._.!!ccause of the maximum allowable steam flow throuch the L.P. Turbinc.
This Month Yr..to.Date Cumulatise 720 8,016
- 11. If ours in Reporting Period
- 12. Number Of flours Reactor Was Critical 713.2 6,775.63 44,304.43 0
0 0
- 13. Reactor Reserve Shutdown llours
- 14. Ilours Generator on.Line 710.55 6,627.74 42',785.74
- 15. Unit Reserse Shutdown flours 0
0 0
- 16. Gross Thermal Energy Generated (MWil) 1,776,292 15,061,204 89,503,010
- 17. Gross Electrical Energy Generated (MWil) 600,400,,
5,006,900 29,245,070
- 18. Net Electrical Energy Generated (MWil) 573.485 4.760.184 27,693,455
- 19. Unit Service Factor 98.7 82.7 80.6
- 20. Unit Availability Factor 98.7 82.7 68.4, 80.6
- 21. Unit Capacity Factor (Using MDC Net) 98.3 76.8
- 22. Unit Capacity Factor (Using DER Net) 96.5 74.3 65.8 1.3 4.3 3.6
- 23. Unit Forced Outage Rate
- 24. Shutdowns Scheduled Over Next 6 Months 87ype. Date,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 Achieved INITIAL CRITICALITY g
INITIA L ELECTRICITY COMMERCIAL OPERATION (9/77) w T
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. ED-309 UNIT Maine Yankee 781211 DATE CONIPLETED By R.M. Siocren TELEPHONE (617) 3b6-9011 X2281 h!ONTil November, 1978 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY P0hER LEVEL (MWe Net)
(ywe.Neg) 824 I
826 g7 2
u25 18 822 826 820 3
39 4
_.ti2 6 20 828 5
822 819 21 6
822 826 22 822
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7 23 8
704 24 823 9
813 824 25 826 826 10 11 823 27 828 700 505 12 28 823 526 13 29 14 824 827 30 823 15 3
16 823 INSTRUCTIONS On this format,hst the average daily unit power levelin MWe Net for each day in the repornng month. Compute to the nearest whole megawatt.
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DOCKET NO.
50-309 UNIT Maine Yankee DATE 781211 COMPLETED BY
_R.M.
Sjogren TELEP110NE (617) 366-9011 X2281 REPORT MONTil November 1978 SUSBIARY OF OPERATING EXPERIENCES At the beginning of the month, the plant was operating at s97% reactor power limited by the 864 MWe maximum load permitted on the low pressure turbine blading. On November 8 and 9 a load reduction to 80% was performed to repair a steam leak on the "A" MSR manway gasket and to repair the divider plate in the "C" MSR.
On November 12 and again on November 27, load reductions to 80% were required to plug two leaking condenser tubes in the "A" waterbox and one tube in the "B" waterbox.
During routine surveillance testing of the RPS system on November 28, a problem developed in the "AC" logic matrix which caused a plant trip f rcm 97% power. All systems responded normally to the trip and the plant was back at full load by 22:20 hrs. on the following day.
Investigations are still underway to determine the actual cause of the trip.
The plant remained at essentially full load for the remainder of.the month.
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DOCKET NO.
50-309 UNIT SilUTDOWNS AND POWER REDUCTIONS UNIT NAME Maine Yankee DATE 781211 R.M.
Sjogren REPORT MONT11 November 1978 COMPLETED BY TELEPilONE (617) 366-9011 X2281
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3 A
Licensee h
L Cause & Corrective No.
Date g.
3:
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jg5 Event
{g 9-3 Action to f
5 g =!
Report :
mO 8'
Prevent Recurrence H
e o
6 L.R.
11/8/78 F
39.33 A
1 NA HF IITEXCII-A Steam leak on the "A" MSR manway.and to 80%
thru divider plate gasket leak on the "C" 11/9/78 MSR L.R.
to 80% 11/12/78 F
19.50 A
1 NA HF
!!TEXCll-D Condenser tube leak in the "A" water-box--Tube plugged.
L.R.
11/27/78 to 80% 11/28/78 F
9.83 A
1 NA HF IITEXCll-D Condenser tube leak in the "B" water-box--Tube plugged.
4-78-4 11/28/78 11/29/78 F
9.45 A
3 NA IA IMSTRO-X Trip' caused by problem in the RPS logic matrix - Investigation is continuing.
I 2
3 4
F: Forced Reason :
Method :
Exhibit G - Instructions S: Sched uleil A-Equipment Failure (Explain) 1 -Man ual for Preparation of Data B-Maintenance of Test 2-Manual Scram.
Entry Sheets for Licensee C-Refueling 3-Automatic Se am.
Event Report (1 ER) File tNUREG-D-Regulatory Restriction 4-Ot her (Explain) 0161)
E-Operator Training & License Examination 4
F-Administrative 5
G-Operational Error I Explain)
Exhibit I - Same Source t'J/77)
II.Other ( E xplain )
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