ML20128C524

Monthly Operating Rept for June 1978 for Monticello Nuclear Generating Plant

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

_ _

NSlp POR NORTNERN 5TATES POWER COMPANY MIN N E A PO Li t. MIN N E S OTA 9940t 2.)

h4 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 .y [j,[ J f 9, 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{(

R png

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.

l l

l l

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__ ____

10 ___ 533 ___ __ 26 ___ _ 539__ _

11 .-

441 ___ 27 _____535__ _______

12 542 __

__. 28 _ _ 537_ _______

13 ____ ___460___ 29 __ __534_ ____

14 ___ _ ___296_______ _ 30 ___ _537___ ___

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 bbnticello UNIT N AME DATE _ "' 6 - 7 A OMERD W A_f__ M60 ,

f REPORT MONTH Jtric TELEPHONE 617/7Q9-5191

• r

=

- ,. =u- '%,

-, g s4 Licensee jg g Cauw A corretieve N.. Date  :-

.3= 4 ,3 5 5 Event s f-? Act.on s..

2E :E j ;f g Repori = S'7 s 5 '" Present Reicurrente 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 *  !

s

- E E jg

\" DJ8e i 3$

=

4 jEi[5 5 Liu nsee Event

,E q, $%

E-3 Cauw & Corre(seve Asinon su jgg H

E E Report : 3 'v1 v:

,j - Presen Resurrente 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 2

repair. .

+

' ~ ~

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 4

C.Refueline .i. Autom iic Stram. Esent Report I LE RI File (W REG. +

D-Rc;ulaisir> Restristion 4 Othe: (Explaml Oleil l l 1 Operator Trainin;1 Eisenw ITamination 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. ) 1 b

z k

, ,- r .