Text

Monthly Operating Rept for Jan 1979
	ML17317A936
Person / Time
Site:	Cook
Issue date:	02/02/1979
From:	Gillett W; INDIANA MICHIGAN POWER CO.
To:	;
Shared Package
ML17317A935	List: ML17317A934; ML17317A936;
References
	NUDOCS 7902220027
	Download: ML17317A936 (15)
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AVERAGE DAll Y UNIT POViER LEVEL DOCK:"T NO. 50-316 UNIT D~ T-2-2-7 9 COMPLETED SY et TELEPHONE I

MONTH Januarv 1979 DAY AVERAGE DAILYPO4'ER LEVEL DAY AVERAGE DAILYPOWER LEVEL (MNe-i'i ) (MWe.Net >

1 7 17 1083 820 1080 628 19 1074 1045 20 1070 995 1059 370 1065 795 968 1084 902

75 924 10 1069 26 1008 1073 1040 1054 2S 1070 IS 1069 152 1067 15 719 1070 16 1077 INSTRUCTIONS On:his torrnat.!is: th. ave-"S "'a!i<'.n!t poli'er )e~'e! tn '..fauve.Net or each aalu in th 'vrt;nS .niinth. Ci) ttoute tu nearest v'hoie rnemivat t.

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OPERATIVG DATA REPORT DOCKET a40.

~Z9 OPERATING STATUS DATE CD>IPLETED BY TELFPHONE ~~

~> ~ T. I lett 59 01 DOnald C. Notes I. Unit Name

2. Reporting Period:

3. Licensed Thermal Power (MWt):

4.. Nameplate Rating (Gross MWe): 1133 S. Design Electrical R"ting (Net hfWe): 1100

6. hfaximum Dependable Capacity (Gross Mfwe: 1118

7. hfaximum De p endable Ca p acit-~(Net hfWe:) 082 S. If Changes Occur in Capacity Ratings (Items Number 3 Throt-". 7) Since Last Report. Give Reaesons:

9. Power Level To Which Restrict&, If Any (Net hfWe):

IO. Reasons For Restrictions, IfAny:

This h!onth Yr:to.Date Cumulative ll. Hours In Reporting Period 744 744 9504

12. Number Of Hours Reactor Was Citical 710. 5 710. 5 5941. 2

13. Reactor Reserve Shutdown Hous 0 0

14. Hours Generator On-Line

15. Unit Reserve Shutdown Hours

-w

- w>> 724 740

18. Net Electrical Energy Generated (hiWH)

19. Unit Service Factor 79. 5

20. Unit Availability Factor 79. 5

21. Unit C pacity Factor (Using hfDC Net) 86. 8 86. 8

22. Unit Capacity Factor (Using DER Net) 85. 4 67. 3

23. Unit Forced Outage Rate 7.2 7.0

24. Shutdowns Scheduled Over Next 6 hfonths (Type. Date. and D"~tion of Each I:

5. tf Shut Down At End Of Report Period. Estimated Date oi Startup:

6. Units ln Test Status tPHor to Commercial Operation): Fore""st Achieved iNlTlAL CRlilCALlTY lNlTIALELECTRlCITY CO.'LIIERCIAL OPERATlON

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DOCKET NO.

50-316 UNIT SIIUTI)O)VNS AND PO'lVER I(EDUCTIONS I)ATE 2-12-79 REPORThlONfll january, 1979 Wy I

rr =n ~ ~J Llccllscc Cause k. Cur rc<<l ivc 4 p 0p No. I)alc ~ A Ilvcnl Acllo>> Io J

Rcporl rr E~ Pfcvcnl Rc<<urrcll<<c

~ CA 45 790102 0 A N/A zz zzzzzz Reactor power reduced to 545 to re-move east main f-p turbine from service to repair leaks in the f-p turbine condenser.. Reactor power returned to 1005 790103.

46 790103 6.1 G N/A zz zzzzzz Reactor tripped manually when feed-water isolation valves to steam gen-erators 1 and 2 were inadvertently'losed.

Reactor power returned to 100K 790104.

47 790106 16.5 H 3 79-003/03L-0 Zz zzzzzz Reactor trip with safety injection actuation due to indicated "High" steam line differential pressure.

False indication of high steam line pressure was caused by instrument lines freezing. Reactor power re-turned to 100K 790107 I': Fore<<d Reasort: hlclbod: Exhibit G - Instructions S: Scllcllulcrl A.Erluiptncnt Failure (Explain) I.hlanual for Preparation ol')ala I).hlaitttenancc or Test 2.Manual Scraln. Entry Sllcels for Ll<<cnsec C-Rc fuel inl, 3.Auloulalic Serai>>. Eve>>I Rcport (LI!R) File (NUREO ~

D.Rcl>>tlatory Rcslri<<lion 4.0tltcr (Explain) OI6I)

L'.Operator Tlalnltli,8c Lice>>sc Exanlinallon I'-Administrative (j Opcralio>>al Iitror (Iixplaitt) Exllibit I - Salne Soul<<e I I.Olllcr (Explai>>)

l)OCKET NO.

50-316 UNIT SIIUTI)O'LUNS ANI) POIVER lhEI)U(.'TIONS 1919 Sheet 2 of 2

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El EJ Cause h. Corrective Q C3 Aetio>i lo Nl). l)alc 999 I!vent Q

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Rcport 4c Eu O Prcvcol Rccurfcocc

~ C/) g CJ 48 790113 8.6 A 3 N/A HC HTEXCH Unit trip due to drop in>>A>> Con-denser vacuum caused by multiple tube failures.

49 790114 22.2 H N/A zz zzzzzz. Unit trip from 96K .power during power escalation due to main trans-former Phase 2 ground fault. Ground fault was due to ice build-up on bus support insulator causing a phase to ground flash-over. Reactor power at 100K 790115.

I 4 I': I'oiccd Rcasoll: hletllod: Exllibil G - Inslruclioos S: Sclicdulcd A Eilllipolcnl Failure (fxplaiii) I M a IIIIal fi>r Preparatii>>i ol'l)ala I).hlaiotcnaoce ur Test '2 hlaoual Scralo. Lolry Sliccls for Liccilscc

('.Ilcfuelioi) 3.Auloolalic Scfiuli ~ Event Repor I (I.I!R) I'ilc (NUI<l'.()~

D Rct,ulatoiy Rcslriclioo 4-Otller (Explain) Ol C) I )

Ii-Operator Traini>>t, k License lixantioation f.Adntinistr;itive 0 Opcraliuiial Eiror ()explain) 'Iixllibit I - Sainc Souicc I I.Oilier (I:xplabi)

Docket 50-316 Unit Name: D. C. Cook Unit 82 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: February 12, 1979 OPERATING EXPERIENCE -- JANUARY, 1979 Hi hli hts There were four full power trips on this Unit during the reporting period.

Summar 01/01/79 The South half of "B" Condenser was out of service for an 8.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for checking of tube leaks.

01/02/79 Unit loading was reduced from 100% power (1110 MWe) to 55% power (600 MWe) to remove the East Feed Pump from service. This was to inspect the Feed Pump's Condenser for tube leaks and,one leak was located.

The Feed Pump was returned to service and the Unit was reloaded to 100% power (1110 MWe). Total time span of reduced load was 16 hours1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months .

The South half of "B" Condenser was again out of service while the Feed Pump was out of service.

01/03/79 At 0915 hours the Unit was manually tripped from 100%

power when Feedwater Isolation Valves 81 and 0'2 Steam Generator were inadvertantly closed. The Reactor was returned to critical at 1322 hours0.0153 days 0.367 hours 0.00219 weeks 5.03021e-4 months and the Generator was paralleled with the system at 1523 hours0.0176 days 0.423 hours 0.00252 weeks 5.795015e-4 months the same day.

01/04/79 The Unit was loaded to 100% power (1110 MWe) by 0039 hours4.513889e-4 days 0.0108 hours 6.448413e-5 weeks 1.48395e-5 months .

The East Containment Spray System was inoperable for a 3.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for repacking of a valve.

Ol/05/79 -- Loading was reduced to 80% power (850 MWe) to remove the "A" set of low pressure heaters from service due to a suspected tube leak in the 5'4 heater. Once the set of heaters was out of service, the Unit was reloaded to 100% power (1110 MWe). Total time of reduced load was 15.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months .,

The Diesel Fire Pump was out of service for a 4.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months

~

period for routine lubrication.

Unit t

Docket No.:

Name:

Completed By:

50-316 D. C. Cook R. S. Lease Unit 82 Telephone: (616) 465-5901 Date: February 12, 1979 Page: (2) 01/06/79 The Unit. tripped from 100Ã power at 0901 hours0.0104 days 0.25 hours 0.00149 weeks 3.428305e-4 months . The initiation of trip was from a Safety Injection due to an indicated pressure difference of 100 psi between two steam leads.. The pressure difference was false and was really caused by steam pressure indication lines being frozen. The outside weather temperature was -6'F and some openings in the steam stop valve "enclosure had not been sealed. The frozen lines were known and work was underway at the time of trip to thaw them out.

Even though the Safety Injection was considered false due to the frozen pressure lines, the Boron Injection Tank was allowed to flow to the core. This required returning this tank.to Chemical Specification prior to start-up.

Auxiliary Feedwater Valve FMO-232 was inoperable for a 2 hour period when it'could not be closed. The problem was traced to a broken wire and repaired.

The Reactor was returned to critical at 2226 hours0.0258 days 0.618 hours 0.00368 weeks 8.46993e-4 months .

01/07/79 The Turbine was rolled and the Generator paralleled with the system. at 0128 hours0.00148 days 0.0356 hours 2.116402e-4 weeks 4.8704e-5 months . Parallel was through only one Generator Braker A-1. The A-2 braker was un-available because of a damaged capacitor. The A-2 braker was repaired and closed at 1228 hours0.0142 days 0.341 hours 0.00203 weeks 4.67254e-4 months .

The Unit was loaded to 1005 power (1110 bWe) by 1020 hours0.0118 days 0.283 hours 0.00169 weeks 3.8811e-4 months .

The "A" set of low pressure heaters was returned to service at 2030 hours0.0235 days 0.564 hours 0.00336 weeks 7.72415e-4 months . 8 leaking tubes had'een identified and plugged in the 84 Heater.

The North half of "B" Condenser was out of service for a 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months period for checking o$ tube leaks.

Ol/08/79 The High Demand Fire Pump was out of service for a 5.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for routine lubrication.

Radiation Monitors R-31 and R-32 were out of service for a 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months period for calibration of the R-32 instru-ment.

Docket 50-316 Unit Name: D. C. Cook Unit 5'2 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: February 12, 1979 Page: (3) 01/09/79-- The South half of "A" Condenser was removed from service at 0910 hours0.0105 days 0.253 hours 0.0015 weeks 3.46255e-4 months . This remained out of service for a period of 31 hours3.587963e-4 days 0.00861 hours 5.125661e-5 weeks 1.17955e-5 months . Attempt was made to return it to service several times and each time leakage was again indicated.

The leakage was finally found.

Each Component Cooling Mater Pump was out of service for a one hour period, on a staggered basis, for routine lubrication.

01/10/79 The North Safety Injection Pump was out of service for a 4.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months period for routine lubrication followed by the South Safety .Injection Pump being out of service for a 1.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for routine lubrication.

k2 Steam Generator Stop Valve Trip Valve MRY-221 was inoperable for a 3 hour period for replacement of a leaking gasket.

The South Condensate Booster Pump=was removed from service for a motor bearing inspection.

01/11/79 The East RHR Pump was inoperable for a 4.25 hour2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months period for routine lubrication followed by the West RHR Pump inoperable for a 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months period for routine lubrication.

The Turbine Driven Auxiliary Feedwater Pump was inoper-able for a 16.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months period for repairs to the Suction Strainer.

01/12/79-- The North half of "C" Condenser was out of service for a 5 hour period for plugging of tube leaks.

The North half of "A" Condens'er was out of service for a 12.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for checking of tube leaks.

The East Centrifugal. Charging Pump was out of service for a 6.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months period for routine lubrication.

Loading was reduced to 90Ã power (1000 NMe) for testing of Turbine valves. Total time span of reduced power was 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months .

01/13/79 The Unit tripped from 100Ã power at 1005 hours0.0116 days 0.279 hours 0.00166 weeks 3.824025e-4 months as the South half of "A" Condenser was being drained. The cause of the trip was low vacuum in the Condenser due to air being'sucked in due to leaking Condenser tubes.

During the outage this Condenser was checked and 21 leaking tubes were identified and plugged.

II Docket 50-316 Unit Name: D. C. Cook Unit 82 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: February 12, 1979 Page: (4) 01/13/79-- The Reactor was returned to critical at 1659 hours0.0192 days 0.461 hours 0.00274 weeks 6.312495e-4 months and (cont.) the Unit paralleled to the system at 1839 hours0.0213 days 0.511 hours 0.00304 weeks 6.997395e-4 months . The Unit was loaded to 1005 power by 0400 hours0.00463 days 0.111 hours 6.613757e-4 weeks 1.522e-4 months January 14, 1979.

01/14/79-- The Unit again tripped from 1004 power at 0421 hours0.00487 days 0.117 hours 6.960979e-4 weeks 1.601905e-4 months .

Cause of the trip was differential relay operations on Phases 2 and 3 of the Main Transformers. The differen-tial protection operated on both the transformer protec-tion and the overall protection.

At this time, weather conditions were extremely poor due to high winds and blowing snow. Investigation found that a 765 KV support insulation on the Phase 2 Main Transformer had flashed over. There was a build up of ice in this area. The flash over area only required clean up and this was accomplished by 0100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months January 15, 1979.

Ol/15/79 The West Component Cooling Water Pump was out of service for a 6 hour period for routine lubrication.

The North half of "A" Condenser was out of service for a 9 hour period for checking of tube leaks.

The Reactor had been returned to critical at 1325 hours0.0153 days 0.368 hours 0.00219 weeks 5.041625e-4 months January 14, 1979.

The Unit was paralleled to 'the system at 0235 hours0.00272 days 0.0653 hours 3.885582e-4 weeks 8.94175e-5 months and loaded to 1005 power (1110 MWe) by 2400 hours0.0278 days 0.667 hours 0.00397 weeks 9.132e-4 months .

01/16/79 The North Control Room Air Conditioning Unit was out of service for a 9.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for rerouting of air lines.

82T Circulating Water Pump was returned to service.

This pump had been out of service since December 30, 1978 and rebuilt.

01/19/79 -- Loading was reduced to 90/ power (1000 MWe) for testing of Turbine Yalves. Total time span of reduced power 5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

01/21/79 The Southwest Steam Coil in the left reheater started showing indication of leakage. The heating steam was valved off the Southwest coils of both reheaters at 0930 hours0.0108 days 0.258 hours 0.00154 weeks 3.53865e-4 months .

Docket 50-316 Unit Name: D. C. Cook Unit ¹2 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: February 12, 1979 Page: (5) 01/21/79 Radiation Monitors R-11 and R-12 were inoperable for (cont.) 36 minutes for replacement of paper.

As the South half of "A" Condenser was being drained for leak inspection, Condenser Vacuum dropped by 2.5 inches Hg. and electrical load sagged by 60 Mw. Two Condenser tubes were plugged. One acted like total severence. The vacuum'ecovered and the Condenser half was returned to service. Total Condenser outage time 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months .

01/23/79 Loading of the Unit was reduced to 905 power (980 MWe) for removal of the "A" set of high pressure heaters.

Reason suspected tube leaks in the ¹5 heater.

01/24/79 The "AB" Emergency Diesel Generator was inoperable for a 15.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months period for repair to cooling water check valve ESW-143.

01/26/79 Unit loading increased to 1005 power (1110 MWe).

The !'A" set of high pressure heaters remain out of service.

Unit load was reduced to 90'A power (980 MWe) for testing of Turbine valves. Total time span of reduced load 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

Ol/27/79 The South Condensate Booster Pump was returned to service. What started as a motor bearing inspection ended up as a motor replacement.

The "A" set of High Pressure heaters was returned to service. Tube leaks were plugged in both the 5 and 6 heaters.

All motor operated Auxiliary Feedwater Valves were removed from service, one. at a time, for inspection of electrical connections and checking of tightness of terminals.

V DOCKET NO. 50 - 316 UNIT NAME D. C. Cook - Unit No. 2 DATE 2- 2-79 COMPLETED BY B. A. Svensson TELEPHONE 616 465-5901 I

MAJOR SAFETY-RELATED MAINTENANCE JANUARY, 1979 M-1 IM0-211, East containment spray discharge valve would not close. The termination at the torque switch failed and was repaired. Retest was satisfactory.

FMO-232 auxiliary feed valve, would not shut from control room. A broken wire to the torque switch was replaced. Retest was satisfactory.

M-3 Seal leakage on P3 boric acid transfer pump. Replaced mechanical seal and had pump retested.

CSI-1 The low and low-l.ow rod insertion limit alarms for Rod Banks C and D were received while the "rods were in their correct positions'. The Bank D insertion alarms were the result of the pulse to analog converter improper operation. The pulser was manually pulsed to the correct rod position. The high limit of the Bank C rod insertion limit-computer had drifted high. The high limit of the instrument was adjusted for the correct value.

CSI-2 During the performance of 2 THP 4030 STP.145, Train 8 Logic Channel Surveillance Test, the logic for steam generator high high water level loop 3 failed to test as required. The universal logic board R214 was replaced in the Train B Solid State Protection System. The logic was retested and verified operable.

C&I-3 The permissive status lights P-6, P-7, P-S, P-10 and P-13 were illumi-nated without the solid state protection system requiring these outputs.

The problem was determined as a failure of Z7 on universal logic card A214. The logic board was replaced and the Train B system logic was verified by performing surveillance test 2 THP 4030 STP.145.

ML17317A936

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