ML20125A412
| ML20125A412 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 09/05/1978 |
| From: | Myrabo A NORTHERN STATES POWER CO. |
| To: | |
| References | |
| NUDOCS 7809150482 | |
| Download: ML20125A412 (4) | |
Text
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NARRATIVE SIM RRY OF OPERATING EXPERIENCE l
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Docket No.
50-243 Unit Monticello 3-i Capleted by A. L. Myrabo t
Date Septenber 5,1978
!O mi August I
t' I
8/01/78 Unitofflinefrom7/29/78shutdwn. Outage extended i
due to high reactor water conductivity.
e 8/01/78 to Pwer operation.
8/08/78 i
j.
8/09/78 Reactor scram. Oscillating mechanical pressure regulator resulted in APmt high flux scram.
8/10/78 l
to Pwer operation.
8/23/78 j
8/24/78 Reactor scram. LPRM pwer supply failure resulted in APRM high flux scram.
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l 8/25/78 l
to P wer operation.
8/31/78 i
l NJrE: The unit load-follwed on 7' days in this period.
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OPERATING DATA REPORT DOCKET NO.
50-263 i
DATE 9-5-78 COMPLETED BY A. L. Myrabo TELEPHONE 612/295-5151 a
l OPERATING SI'ATUS INotes I
Monticello I
- 1. Unit Name :
i
- 2. Reporting periods AUGUST I
1
- 3. Licensed Thermal Power (MWt):
__l670 t
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- 4. Nameplate Rating (Gross MWe):
569 1
1
- 5. Design Electrical Ratina (Net MWe):
b45.4 I
i 3
- 6. Maximum Dependable Capacity (Gross MMe): __564 1
1 2
- 7. Maximum Dependable Capacity (Net MWe) e _
536 1
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- 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)_ Since Last i
Heport Give Reasonse __N/A
- 9. Power Level To Which Restricted, i f Any (Net MWe): __._N/A_
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- 10. Reasons For Restrictions. If Anys __N/A__
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This Month Yr.-to-Date Cumulative 744
_5831 62856
- 11. Hours In Reportina Period
-- 725.9 5587.9
.__ 50756.3 l
- 12. Number of Hours Reactor Was Critical l
- 13. Reactor Reserve Shutdown Hours 0.0 0.0 940.7 14 Hours Generator On-Line 709.2 5519.5
_ 49296.9 0.0 0.0 i
- 15. Unit Reserve Shutdown Hours 0.0 i
- 16. Gross Thermal Energy Generated (MWH)
-_1067938
_ 8578993-
_ 82233567 l
- 17. Gross Electrical Eneroy Generated (MWH) __359660
__2913670
__25286360
- 18. Net Electrical Energy Generated (MWH)
__341310
__2792406
__24168780
- 19. Unit Service Factor.
__ 95.3%
___ 94.7%
78.4%
- 20. Unit Availability Factor
__ 95.3%
___ 94.7%
____ 78.4%
- 21. Unit Capacity Factor (Using MDC Net)
__ 85.6%
___ 89.3%
71.7%
- 22. Unit Capacity Factor (Usino DER Net)
__ 84.1%
87.8%
70.5%
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- 23. Unit Forced Outage Rate 4.7%
3.0%
7.5%
- 24. Shutdowns Scheduled Over Next 12 Months (Type.-Date, and Duration of Each) i Refueling Outage -October 14, 1978. 40 Days _
- 25. If Shut-Down At End Of Report Period Estimated Date Of'Startups__N/A_
- 26. Units In Test Status (Prior to Commercial Operation): N/A Forecast Achieved INITIAL CRITICALITY i
'INIT!AL ELECTRICITY
= = - -
COMMERCIAL OPERATION
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AVERAGE DAILY UNIT P0nER LEVEL, i
5 DOCKET NO.
50-263-UNIT Monticello__
i DATE 9-5-78.___
1 CohPLETED BY A. L. Myrabo TELEPHONE 612/295-5151 i
I
-t MONTH AUGUST f
DAY AVERAGE DAILY PonER LEVEL DAY AVERAGE DAILY PONER LEVEL (MWe-Net)
(MWe-Net) i 1
_, 34_
17-535____-
i 2
327 18 536 3
448 19 395=
l 4
_ 470 20 493 _
5 413 21 519 l
6 467__
22
--534 7
519__ _ _
23 5 3 7_,._
8 539 24
~362_
4 9
285 25 370__
l 10 342__
26 532 11 512 27 541 12
__531_
28 532__
13 430 29 441__
=
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14 534_ ___
30 505_
i 15 527 31 475_
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__537 l-t INSTRUCTIONS
- Un this format, list the average daily unit power level in MWe-Net-for-each day in the reporting month.
Compute to the nearest whole mecawatt.
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50-263 DOCKET NO.
UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME Mtmticello DATE kmt-5 1078 COMPLETED BY A_"L Mrrabo TELEPHONE 612/295-5151 REPORT MONTH Asimiet
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Cause & Corrective b.
Date 3
3g_
g jg5 Event 5?
5-?
Attain to
- 2. E E
j5g Repors =
AC y'
Psetem Recurrena 2-
'11 8-1-78 F
17.8 A
4 LER-78-14 RB VALVDP Continuation of 7-29-78 outage. Out-age extexled due to high reactor water conducitivty.
12 8-9-78 F
9.5 H
3 N/A CC INSTRU-C Oscillating mechanical pressure reg-ulator caused APRM high flur scraan.
-13 8-13-78 S
0-H 4
N/A ZZ ZZZZZZ. Imad following per system dispatcher.
14 8-19-78 S
0
-B 4-N/A ZZ ZZZZZZ Weekly surveillance and pican.iition-l
~
ing after rod adjustment.
15 8'24-78 F
7.5 A
3 N/A IA INSTRU-E APRM high flur scram caused by LPRM power styply failure. Power supply replaced.
I' 2
3 4
F Forced Reason:
Method:
Exlubs: C. Instructions S Scheduled A-Equipment Failure f Esplaint I-Manual for Preparai6.sn of Data B-Mainte:iance of Test 2-Manual Scram.
Entry Sheets for Lseensee C.Refuefing
.L Automatic Stram.
Event Report (LERI Fde tNUREG-D-Regulatory Resirsction 4-Other t Esplain)
Oltit i E-Operator Training & Lkenw rsamination F-Adnunistrative 5
Estubit I Same S.m se G-Operationat Eeror iFsp12:,0
(*8 ~7)
Il-Other t E splano