ML17053B851
| ML17053B851 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 08/07/1980 |
| From: | Roman T NIAGARA MOHAWK POWER CORP. |
| To: | |
| Shared Package | |
| ML17053B852 | List: |
| References | |
| NUDOCS 8008180408 | |
| Download: ML17053B851 (8) | |
Text
NIAG MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION UNIT //1 NARRATIVE OF OPERATING EXPERIENCE JULY 1980 The station operated with a monthly availability factor of 51.2% and a net design electrical capacity factor of 43.0%.
During the entire month //15 Reactor Recirculation Pump was out of service and isolated due to mechanical problems.
Availability/capacity factor losses were due to the following:
On July 12 the unit was removed from service when results of the main trans-former oil analysis indicated an excessive amount of dissolved gases in the oil.
During the ensuing two (2) week outage, exhaustive testing'as performed which revealed a problem in 'the ground shield of Phase 3.
This situation was corrected by isolating the ground'hield.
The transformer was then determined, through further testing, to be acceptable for service.
During the same two week outage, the manual and automatic scrams required by NRC IE Bulletin 80-17 were performed;" as well as other various maintenance items.
On July 26 start-up commenced,.but the'eactor scrammed on IRM high flux.
Subsequently, the unit was restarted and placed in service.
Capacity factor loss throughout the month was also due to condenser delta-T limitations and condenser hotwell temperature limitations.
CLASS I WORK ELECTRICAL MAINT. JULY 1980
//4170 Spent fuel pool -'eplaced solenoid coil.
//4960 Reactor bldg. closed loop cooling pump
!/13 checked breaker, found no problem.
CLASS I WORK INSTRUMENT & CONTROL JULY 1980
//4095 Inst. reg.
to C.R.D. F.C.V.
replaced diaphram.
//3576 L.P.R.M.36-33B detector shorted.
t CLASS I WORK MAINTENANCE JULY 1980
//3724 !/12 shutdown cooling vent valves 374
& 326 replaced vent valves.
//3785 Repaired restraint 51-H12-14.
//3789 Revised restraint 201-2-R40-14.
f/3784 Revised restraint 44-SC-1-14.
//3723
//12 shutdown cooling flow control valve replaced gasket
& packed valve.
//4958 Changed CRD suction strainer.
//3973 Changed
//12 CRD filters.
//4827 CRD 30-43 repaired foot valve.
84831 F.W. flow control valve repaired crack in pipe.
//4819 Emerg.
cond. vent isolation valve //0501 repacked.
//4943 //121 electromatic relief valve replaced.
//4953 CRD accumulator 42-35 replaced charging fitting.
//4954 CRD accumulator 34-03 replaced charging fitting.
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OPERATlNiG DATAREPORT OPERATI!v'G ST.TLtS nit Name.'r r v
s
~ POINT UNIT Pl
- 2. Reportiii Period:
- 3. Licensed Thermal Power (lffVt):
- 4. Nameplate Rating (Gross!ifWe):
- 5. Design Electrical Rating (Net iifNe):
..,..;,t....,
<<.):63a 6la Notes DOCKET NO.
DATC 0~1980 TELEPHONE (33 '~~2110
. ext.
1383 S. IfChanges Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons:
- 9. Power Level To IVhich Restricted, IfAny (Net ibfNe):
IO. Reasons For Restrictions. IfAny:
Il. Iiours In Fcporting Period
- 12. i%umber Of Hours Reactor >Vas Critical
- 13. Reactor Reserve Sliutdown Hours
- 14. Hours Generator On Linc
- 15. Unit Reserve Shutdovvn Hours
- 16. Gross Thermal Energy Generated (M'LVH)
- 17. Gross Electrical Energy Generated (i~fNH)
IS. Net Elcctrica! Energy Generated
( iffVH)
- 19. Unit Service Factor
- 20. Unit AvailabilityFactor
- 21. Unit Capacity Facior (Using i~fDC Net)
- 22. L'nit Capacity Factor IUsing DER Net)
- 23. Uiiit Forced Outa e Rate
- 24. Sliutdowns Scheduled Over Nest 6 ilfonths This month Yr.-to-Date' 111.0 4 590.7 0
4 4
0 2'I~.Q P 623 566.0 tType. Date. at d Dur'tio:i of Each',:
Cumuia t ive 94 223.0 69 943.4 12,204.2 67'15.2 20.2 34 988 671.0 71.'4 71.4 0.9 7.2
- 25. IfSliut Doivn At Eiid Of Report Period. Estimated Date of Startup:
- 26. Units ln Test Status (I'riorto Commercial Operation):
Forecast Achieved INITIA'LCRITICALITY lNITIAL ELCCTR ICITY COiIMERCIAL Ol'CRATION
I
UNITSHUTDOWNS AND POWER REDUCTIONS REPORT MONT)I JUI.Y 1980 DOCKET No.
UNITNhhlE COhlPLETED BY
- ext. 1383 No.
Date C
tlaK a-I 1
Vl tJ fft A>>
a c Hcc u~
e:
~ t/)
l5 Liccnscc Event Report >
E~
U EIa cn G o
p Q
CI E ~
Cause h. Corrcctivc Action lu Prevent Recurrence 80-17 07/12/80 351. 7 A
Main Output Transformer Failure (High Explosive Gas Content) 80-18
,07/26/80 11 A
IRM High Flux Scram (mechanical Pressure Regulator Failure)
I F: Forced
. S: Scheduled Reason:
A.Equipment Failure (Explain)
B.hlaintenance or Test C-Refueling D.Regulatory Restriction L.Operator Training8c Liccnsc Examination F-Administrative G.Operational Error (Explain)
I I Ot)icr (Explain) hlethod:
I -hianual 2.Manual Scratn.
3-Automatic Scram.
4-Other (Explain)
Exhibit G ~ Instructions for Preparation oi'ata Entry Sheets for Licensee Event Report (LER) File (NUREG.
OI6l )
Exhibit I - Satttc Source
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- ~l AVERAGE 1)AILYUNITPOWEII LEl'EL DOCKET NO.
50-220 DATE COMPLETED GY T IJ.
Roman TELEPIIOYE ext.
1383 hIONTH DAY AVERAGE DAILYPOWER LEVEL LtlWe.Net)
DAY AVERAGE DAILYPOWER LEVEL (hllVc-Net )
0 17 IS
!9 20 0
0 0
0 10 12 13 15 16 0
0 23 26
'l$
30 3l 0
0 0
0 297 421 507
.551 548 INSTRUCTION5 On this fort>>at. Itst the a<era c daily unit power level i>> M't't'c-Yct for each day in tire"rc)>> rtrri r>>.>>rtl>. (:t>>>>p>>tc to the nearest ivlw>le rnecaivatt.
(I)/7 g )
r
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