ML20128C524
| ML20128C524 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 06/30/1978 |
| From: | Mayer L, Myrabo A NORTHERN STATES POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION (ADM) |
| References | |
| NUDOCS 9212040460 | |
| Download: ML20128C524 (6) | |
Text
_ _
POR NSlp NORTNERN 5TATES POWER COMPANY MIN N E A PO Li t. MIN N E S OTA 9940t 2.)
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July 11, 1978 Director, Of fice of Managetnent Information & Program Control ii c/o Distrib ation Services Branch, DDC. ADM U S Nuclear Regulatory Commission Washington, DC 20555 Dear Sirs IDHTICELLO NUCLEAR CENERATING PIANT Docket No. 50-263 License No. DPR-22 Monthly Operating Report June 1978 Attached are two copies of the Monthly Operating Report for June, 1978 for the Monticello Nuclear Generating Plant.
l Yours very truly, h.
N L 0 Mayer, PE
,;,r Manager of Nuclear Support Services
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LDM/ak cc Director, IE-111, USNRC (1)
Director, IE, USNRC (c/o DSB) (10)
MPCA Attnt J W Ferman 781950027 1
6 9212040460 780630 PDR ADOCK 05000263 y I{(
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NARRATIVE SlMARY OF OPERATING EXPERIENCE DOCKET NO.
50-263 LNIT hbnticello 00WLETED BY A. L. Myrabo IMili July 6, 1978 bbnth June 6/1/78 Power Operation.
6/2/78 Reactor scram. hbde switch inadvertently placed in shut-down after loss of motor control center due to trip of breaker at 55% power.
6/3/78 Scheduled outage to repair top works of relief valve and to feedwater heater leaks. Nm11: Reactor was in a shutdown 6/5/78 condition prior to the start of this outage.
i 6/5/78 Reactor scram. During startup, oscillating mechanical pressure regulator caused a reactor feedwater pump trip on reactor high water level.
Restart of RFP resulted in an IIN high flux scram.
6/6/78 to Power Operation.
6/8/78 6/18/78 Reactor scram. After power reduction to 55% for load following, oscillating mechanical pressure regulator caused an APRM high flux scram.
6/9/78 to Power operation.
l 6/13/78 6/ /78 Power reduced to 65% to repair condensate feedwater pump.
6/20/78 6/21/78 to Power operation.
6/30/78 NOTE: The Unit load - followed on 12 days during this period.
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OPERATING DATA REPORT DOCKET NO.
50-263 DATE 7-6-78.___
COMPLETED BY A. L. Myrabo TELEPHONE 612/290-5151 OPERATING STATUS INotes 1
- 1. Unit Name Montienllo 1
I
- 2. Reporting periods JUNE I
I
- 3. Licensed Thermal Power (MWt):
__l670 1
1 4
Nameplate Rating (Gross MWe):
_ _ __5 6 9 I
I S. Design Electrical Rating (Net MWe):
545.4 I
l
- 6. Maximum Dependaole Capacity (Gross MWe): __564 I
I
- 7. Maximum Dependable Capacity (Net MWe):
536 l __ _
l 8
If Channes Occur in Capacity Ratings (Items Number 3 Through 1) Since Last Report, Give Reasons
__N/A 9
Power Level To Which Restricted, i f Any (Net MWe): ___N/A
- 10. Reasons For Restrictions, if Any
__N/A This Month Yr.-to-Date Cumulative
- 11. Hours in Reporting Period 720 4343 61368
- 12. Number Of Hours Reactor Was Critical
___646.5
___4196.1
__ 49364.5
- 13. Reactor Reserve Shutdown Hours 0.0 0.0 940.7
- 14. Hours Generator On-Line 630.9
___4150.7
__ 47928.1
- 15. Unit Reserve Shutdown Hours 0.0
__0.0
_0.0
- 16. Gross Thermal Energy Generated (MWH)
_ 858055
_ 6516521
_ 80171095
- 17. Gross Electrical Energy Generated (MWH) __286880
__2219320
__24592010
- 18. het Electrical Energv Generated (MWH)
__273100
__2133766
__23510140
- 19. Unit Service Factor
__ 87.6%
___ 95.6%
____ 78.1%
- 20. Unit Availability Factor
__ 87.6%
___ 95.6%
78.1%
- 21. Unit Capacity-Factor (Using MDC Net)
__ 70.8%
___ 91.7%
____ 71.5%
- 22. Unit Capacity Factor (Using DER Net)
__ 69.5%
___ 90.1%
____ 70.2%
- 23. Unit Forced Out991 Rate 5.9%
1.2%
_' 7.4%
24 Shutdowns Scheduled Over Next 12 Months (Type Date, and Duration of Each)
Refuelino Outage, October 16, 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 INITIAL ELECTRICITY COMMERCI AL OPERATION i
.=.
4*
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.
50-263-UNIT Monticello__
DATE 7-6-78_
COMPLETED BY A. L. Myrabo TELEPHONE 612/295-5151 j
MONTH ___
JUNE DAY AVERACE DAILY FONER LEVEL DAY AVERAGE DAILY POWEH LEVEL (MWe-Net)
(MWe-Net) 1 530____
l7 337 2
35___
l8
_326__
3
-4_
19 321__
4
- 4 __ _ _
20 335___
5 124 21 408__
6
_405_
22 518______
1 495 _ __
23 533 8
1 4 2__ ___
24
_413___
9
___ _____424_______
25 447__
539__
10 533 26 11 441 27
_____535__
28 537_
12 542 13
___460___
29
__534_
30
_537___
14
___ _ ___296_______
15 309 31 l6
__327__
INSTRUCTIONS On this format. list the average daily unit power level in MWe-Net for each day in the reporting month.
Compute to the neares t whole menawatt.
DOCKET NO.
50-263 UNITSHUTDOWNS AND POWER REDL*CTIONS UNIT N AME bbnticello DATE _ "' 6 - 7 A OMERD W A_f__ M60 f
REPORT MONTH Jtric TELEPHONE 617/7Q9-5191
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=u-Cauw A corretieve g
s4 Licensee jg g
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4
,3 5 5 Event S'7 f-?
Act.on s..
N..
Date s
5 '"
Present Reicurrente 2E
- E j ;f g Repori =
s 5
4*
6-2-78 F.
19.5 G
2
- N/A ZZ ZZZZZZZ Moce switch inadvertently placed in shutdown.
5 6-2-78 S
49.7 B
4 N/A CC VALVEX Outage taken to repair 'D' relief valve top works and..xdwater heater
~
leaks.
NOIE: Reactor was in shutdown mode prior to the start of this oute-
' age.
I 6
6-5-78 F
10.0 11 3
N/A CC INSTRU-C Oscillating mechanical pressure reg-ulator caused reactor feedwater ptmp trip. - Restart of ptaip resulted l in IRM high flux scrun.
I 3
4 F forceJ Reawn -
Method:
Eslutna G - Instrucisons 5 Schcotiled A-Equipmen Failure t E splaini
!41anaal for Preparati no of Data Batainienance of Test 2-Wnual Scrain.
Entr3 Sheets t'er Licemce C-Refueling 3 Autonutic Siram.
Esen Repost iLER) Fde iWREG-D-Rc;ufatory Resirs,; tion J Oshes t Esplaint O l e.I l 1 -Operaior Teaining & I atenw F unmiaison F-Admarmtrati.e 5
G-Operational Fir.is iF spla:.i Esh:t>is ! Sane S.nsrce s'8 ~~ l li-Ot he r i E splair.1 R
- ' Reflects correction to yearly sequence ntspber.
+
UNIT SliUTDOWNS AND POhER REDUCTIONS DOCKET NO.
'50-263 UNIT N AME Monticello DATE _ 7-6-78 t
COMPLETED BY A. L. Mrrabo 1
REPORT MONTH Jtme TELEPHONE 612/295/5151 F
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E jg j [55 Liu nsee
,E q, Cauw & Corre(seve
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DJ8e i
3$
4 Ei Event 3 'v1 E-3 Asinon su
- E E
jgg Report :
H
,j -
Presen Resurrente v:
6 7
6-8-78 F
10.0 H
3 N/A CC INSTRU-C Oscillating mechanical pressure reg-ulator caused high flux APRM scram at 55% power.
8 6-14-78 F.
O B
4.
N/A 01 PlNPXX-B Condensate feedwater pump high vibra-tion. Power mduction to 65% to repair.
2
+
~
9.
6-24-78 S
0
-4
~
N/A ZZ ZZZZZZZZ Pre-conditioning after rod adjust-ment.
l 1
t l
I i
i i
3 3
4 F F.irced Reaum:
Method Estuhn G - Instructions
< 5,heduled A.Eqaspment FailureiEsplain!
!-Man:ssi for Preparation of Data B-Maintenance of Test 2 Manual Scrain.
Entry Sheets s'er Liensee C.Refueline
.i. Autom iic Stram.
Esent Report I LE RI File (W REG.
4
+
l D-Rc;ulaisir> Restristion 4 Othe: (Explaml Oleil l 1 Operator Trainin;1 Eisenw ITamination l
F-AJnumsiraisw 5
G-Operational Eirus ti spf a:.0
' Esh:bn I ; Same S..urse i s ~~ l iI-Ot her i E splair. )
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