ML20062D237
| ML20062D237 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/09/1978 |
| From: | Mitchell D METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML20062D234 | List: |
| References | |
| NUDOCS 7811210186 | |
| Download: ML20062D237 (5) | |
Text
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OPERATING DATA REPORT Dockst No.
50-289 Date 11-09-78 Completed By n n
.m,u,.
OPERATING STATUS Telephone 215 02o 1601 M.165 1.
Unit Name:
'"hree Mile Island, Unit 1 2.
Reporting Period: October 1978 3
Licensed Themal Power (MWt):
o=w h.
Nameplate Reting (Gross MWe):
871 5
Design Electrical Rating (Net MWe):
819 6.
Max. Dependable Capacity (Gross MWe):
640 7
Max. Dependable Capacity (Net MWe):
776 8.
If Changes Occur in Capacity Ratings (Items No. 3 through 7) Since Last Report, Give Reasons:
As of 0000, 10-20-78. the unit MDC was derated to 776. This came about from the loss of MWH due to items as specified on the attached page.
9 Power Level to which Restricted. If Any (Net MWe):
10.
Reasons for Restrictions, If Any:
This Month Yr-to-Date Cumulative 7h5 7296.
36505 11.
Hours in Reporting Period 745 6081.5 29139.8 12.
No. of Hours Reactor was Critical 0
0 838.5 13.
Reactor Reserve Shutdown Hours 1h. Hours Generator On-Line Th5 599h.9 28592.h 0
0 0
15 Unit Reserve Shutdown Hours
- 16. Gross Thermal Energy Generated (MWE) 1873264.0 1h682396 70075961 17 Gross Elect. Energr Generated (MWE) o26662 4638783 23332585
- 18. Net Electrical Energy Generated (MWH) 591049 h538h38 91456817 19 Unit Service Factor 100.0 82.2 78.3 100.0 82.2 78.3 20.
Unit Availability Factor 21.
Unit Capacity Factor (Using MDC Net) 101.'
78 A ve 4 22.
Unit Capacity Factor (Using DER Net) 97.0 76.0 73.1 0.0 3.4 5.2 23 Unit Forced Outage Rate 2k.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
Refueling, 3-10-79, 6 weeks 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 INITIAL ELECTRICITY COMMERCIAL OPERATION 7611210/d es r-
-.v..
AVERAGE DAILY UNIT POWER I.EVEL Docket No.
50-289 Unit T!H-1 Date 11-09-78 Completed By D. G. Mitchell Telephone 215-929-3601 Ext. 169 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Ne')
(MWe-Net) t 787 17 797 1
e 2
792 is 800 3
797 19 796 h
792 20 796 5
791 21 797 6
791 22 793 786 23 789 7
8 799 2h
,798 793 25 799 9
797 26 791 f
10 793 27 795 11 l
791 28 801 l
12 831 787 29 13 79h 1h 790 30 15 31 791 799 800 16 l
UNIT SIIUTDOWNS AND POWER REDUCTIONS Dockst No.
50-289 Unit Name UNr.1 REPORT MONTH OCTOBER Date 11-09-78 Completed By D. G. Mitchell Telephone 215-929-1601 Ext. 160 l
Ea System Component Cause and Corrective No.
Date Type m
yl S
Ug g@
Code I8 Code 5 Action to h3
{
g 7, o g,g Prevent Recurrence d$E ENj 5
au m
None l
m I: Forced 2 eason:
3 0 - I"#*
"8 F
R Method S: Scheduled A-Equipment Failure (Explain)
- *E"*
1-Manual B-Maintenance or Test 2-Marstal Scram.
ePod M H) Mle C-Re meling 3-Automatic Scram.
~
Ven D-Regulatory Restriction 16-Other (Explain)
E-Operator Training & Licensee Examination F-Administrative 5
G-Operational Error (Explain)
Exhibit 1 - Same Source H-Other (Explain)
?
M IMUM DEPENDABLE CAPACITY DERATING The deviation between the test output of 818 We in the winter and 792 We in the summer, and the rated output has historically been classified as l
reductions in generation due to:
)
l.
Equipment losses - W leaks, cire, water / cooling tower deficiencies; steam bypass losses; moisture separator drain dumps for chemistry control, etc.
Power Oscillations Below the Licensed Power of 2535 W. This factor 2.
first became apparent in the Spring of 1975 when the NkC prohibited the peaks of the Units' natural power oscillations from exceeding the licensed 2535 W. Previously we had been attempting to maintain an T
average of 2535 WT with peaks not to exceed 2585 W
- T 3.
Unaccountable Losses - Losses which could not be justified as losses in the above two catagories.
OPE?A*I'iG SUWARY OCTOBER 1978 The Unit operated at 100% full power except for the following planned reductions.
On 10-07-78 the Unit reduced to 65% full power in order to conduct the scheduled Turbine Stop Valve Testing. The Unit returned t) 100% vithin one (1) hour.
On 10-26-78 the Unit experienced an unplanned reduction to appror h tely 85% during a plant transient lasting about fifteen (15) =inutes. The transient was initiated by the inadvertant closing of the hth and 6th stage extraction stop valves which then caused a mismatch between Reactor Power and total feedvater flov. The transient was compounded by taking r.anual control of several major Integrated Control System Stations (i.e.,
W Demand, W Pumps, Diamond Panel, Turbine) and resulted in turbine header pressure variations of 690 to 990 psig.
!&INTENANCE SUWARY There was no major safety related maintenance performed during the month.
.