ML17318A565

Monthly Operating Rept for Dec 1979

ML17318A565
Person / Time
Site:	Cook
Issue date:	01/03/1980
From:	Gillett W, Lease R, Svensson B INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML17318A564	List: ML17318A563 ML17318A565
References
NUDOCS 8001210164
Download: ML17318A565 (9)

Text

OP~~ CLXC DATA P "~ORT DOCK:-I i'0. 50-315 DAI= ~1 0 COifPI:-; =D ".v

=I =PLOy,= '~ii11 ett 51 O?=: ~II4C >IA IUS Donald C. Cook Notes December S. Llc~+ The.~ ?owe (111Y/t)t t~ Rh + (GCOSS 1089 K~M~g (Net!1iNe):

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Design 1054

6. bh"'cv Dependnble Cspoc."g (Gross MY')c T..'if'.'=um De(=a""bl C=uom {Net Ifbve}c S. IfChnn"es Oc='r in Qp='g Uh"gs (It=a Yumber S Though r } Sine= Lssc Repor Give Rwonsc

9. Powe: L=vel To Num Rcs '~ -'. If Any (Net ADVe}:

10. R~ons For P~~ns, L'A"y:

This bf onch Y::to-Dat= Cumut tive II. c>>os In Rcpoc.ing Period IZ. Nu=..oer Of Houc R ctor Ass C;;=4 557. 9 5 750.0 0

IS. Re"ctor Rac~e Shu dovvn =o-- 0 463

14. Houcs Genitor On-Ua 555.7 5 669.9 32 083.2

15. Unit Ra ~e Shutdown Hoc

16. Gross I n~ci C."."~y Cene.=!ed (YQVH) 1 723 754 Be~c"'e~ Ger". ~~ (i'I>YH) 573 090 5 867 680 2~515 1T. Gross IS, Ilec 2~M

19. Unit Servi=

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icctor Cen ' (cri'ski ) 5 3,050 5,660,137 27 997 314 75.1 "Q. Uric Aa~biL'w Fcccor 74.7 .7

~1. Unit C-mc -'fcc or {Usi ~ IIDC %~et) 71. 2 61. 9 67.

"". Unit Csaocity:"cccor (Using DCR 'e:) 61. 3 62. 0

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DOCKET NO. '0-315

UNIT DATE 1-8-80 COMPLETED 8Y W. T. Gillett TELEPHONE 616-465-5901 MONTH DAY . AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-Net) (MWe-Net) 417 1033 619 18 1044 1041. 19 1044 1043 20 1044 1043 21 1044 1045 22 1025 1042 23 1038 1044 739 1025 25 10 1044 ze 0 982 27 0 ~

12 987 '28 13 '.933 29 0.

942 30 993 31 16 833 INSTRUCTIONS On this format list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

UNIT SIIU'I'l)OlVNS ANI) I'O(VEI( REI)UNIONS I) OCKET NO. 50-315 UNIT NAhlE l)ATE T-14-80 COhlPLLTEI) IIY REI'ORT h(ONTII December 1979 616 465-5901 1 ELEI'IlONE PAGE 1 of 2

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153 791201 F 13.7 G 3 N.A. RB INSTRU While working on the rod control system to clear a <<Rod Control Ur gent Failure" alarm a wrong card was pulled, dropping the rods in that group which caused a "negative rate" reactor trip. The unit was returned to service the same day and reached lOOX power on 791202.

154 791216 S 0 B 4 N.A. ZZ ZZZZZZ Reactor power reduced to 70$ to per-form N.I.S. Incore/Excore cross cal-ibration. Power returned to 100%

791217.

155 791224 F 174.6 H 1 79-065/01T-O SE SUPORT Unit shut down and brought to cold shutdown (Mode 5) due to a signifi-cant non-conformance identified during inspection/evaluation program performed in accordance with IE Bulletin No. 79-14. Analysis in-dicated that under the condition of 3

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UNIT SIIUTI)OlVNS ANI) I'OlYEIt ItFI)VCTIONS l)OCKET NO. 50-315 UNIT NAh'IE D.C.Cook-Unit 1 l)ATE COhIPI.L'TEI) IIY vensson nEI Olt r hlON fllDecember 1979 "n

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155 (C ntinued) the design basis earthquake, the duct work on both trains of the con-tainment air recirculation system would be stressed beyond yield. The unit remained out of service at the end of the month to effect required modifications.

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Docket No.: 50-315 Unit Name: D. C. Cook Unit fl Completed By:, R. S. Lease Telephone: (616) 465-5901 Date: January 9, 1980 Page: 1 of3 MONTHLY OPERATING EXPERIENCES -- DECEMBER, 1979 Hi hli hts The Unit entered this reporting period operating at .,1005 power.

Power levels other than this are detailed in the summary.

There were 2 outages during the reporting period. These are also detailed in the summary.

Total electrical generation for the month was 573,090 Mwh.

~Sunmar 12/01/79 Power reduction for the purpose of testing Turbine valves was started at 0025 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br />. When at 95K power control rods failed to move due to a Rod Urgent Failure Alarm and the power reduction was halted.

At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> the Unit tripped from a negative rate trip caused when a card was pulled on Control Bank "A", Group 1, while trying to eliminate the problem with the Urgent Failure Alarm.

The Control Rod problem was repaired at 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br /> and the reactor returned to criticality at 2136 hours0.0247 days <br />0.593 hours <br />0.00353 weeks <br />8.12748e-4 months <br />. The Generating Unit was returned to service at 2341 hours.

12/02/79 Power increase was stopped at 48Ã at 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br /> due to an indicated quadrant Power Tilt ratio of greater than 1.02. The quadrant Power Tilt cleared and power increase was again star ted at 1105 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.204525e-4 months <br /> with the Unit being loaded to 100Ã by 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br />.

12/04/79 Containment Recirculation Fan CEg-2 was inoperable for a 2.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period for repairs to a Test Damper.

12/08/79 Power was reduced to 85K for testing of Turbine valves.

Total time below 100% power was 5.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

>13 Circulating Water Pump failed at 0805 hours0.00932 days <br />0.224 hours <br />0.00133 weeks <br />3.063025e-4 months <br />. Temp-erature rise across the Condensers increased to greater than 23 F but less than 27 F. Tech. Spec's allow operation in this area with a failed pump but not to exceed 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

D ocket No.: 50-315 Unit Name: D. C. Cook Unit 81 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: January 9, 1980 Page: 2of3 12/08/79 34.5KV Reserve Feed Cables 12AB and 12CD were out of (Cont'd) service, one at a time, for a 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period each.

This was to allow reconnecting of Transformers 201AB and 201CD.

12/10/79 Auxiliary Feedwater Valves FMO-212 and FMO-242 were inoperable for a 10.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period for cleaning and inspection of switchgear.

12/ll/79 Power was reduced to 95K at 0015 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br />. This was to reduce the temperature rise across the Condensers to less than 23 F.

Meteorological instruments of wind speed, wind direc-tion and temperatures were removed from service for modifications. These instruments were returned to service 12/24/79.

12/13/79 Power was reduced to 85K for a period of 18.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> to remove the South half of "A" Condenser from service for checking of tube leaks.

12/16/79 Power was reduced to 704 starting at 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br />. This was to perform required Incore/Excore Nuclear Instru-mentation Cross Calibration. The Unit was reloaded to 100K power over a 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> ramp starting at 2209 hours0.0256 days <br />0.614 hours <br />0.00365 weeks <br />8.405245e-4 months <br />.

The 813 Circulating Mater Pump had been returned to service at 2142 hours0.0248 days <br />0.595 hours <br />0.00354 weeks <br />8.15031e-4 months <br /> which allowed the return to 100Ã power.

12/21/79 Vent Stack Radiation Monitor R-22 was inoperable for an 11.25 hour2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> period for repairs.

12/22/79 Power was reduced to 85% for testing of Turbine valves.

Total time below 100% power was 4.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

12/24/79 The Unit was started down and out at 1645 hours0.019 days <br />0.457 hours <br />0.00272 weeks <br />6.259225e-4 months <br />.

Reason for the outage was that the design deficiencies in the Containment Hydrogen Skimmer System had been identified. The Turbine was tripped at 1724 hours0.02 days <br />0.479 hours <br />0.00285 weeks <br />6.55982e-4 months <br /> and the Reactor tripped at 1730 hours0.02 days <br />0.481 hours <br />0.00286 weeks <br />6.58265e-4 months <br />. The Reactor Plant entered Mode 4 at 2250 hours0.026 days <br />0.625 hours <br />0.00372 weeks <br />8.56125e-4 months <br />.

12/25/79 The Reactor Plant entered Mode 5 at 1535 hours0.0178 days <br />0.426 hours <br />0.00254 weeks <br />5.840675e-4 months <br />.

The Unit remains in Mode 5 while seismic analysis and required modifications are being performed on the safety related systems.

Docket No.: 50-315 Unit Name: D. C. Cook Unit 81 Completed By: R. S. Lease Telephone: (616) 465-5901 Date: January 9, 1980 Page: 3of3 12/26/79 The 12AB 34.5KV Reserve Feed underground cables were out of service for a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> period. This was to modify the protection circuit of these cables. During this time 4KV Buses T11A and T11B were energized from the Reserve Auxiliary Power Source.

DOCKET NO. 50 - 315 UNIT NAME D. C. Cook - Unit No. 1 DATE 80 COMPLETED BY B. A. Svensson TELEPHONE 616 465-5901 PAGE 1 of MAJOR SAFETY RELATED MAINTENANCE DECEMBER, 1979 Residual heat removal cooldown flow instrument, IFI-335, was found to have weld leaks on impulse lines. Faulty welds were cut out. New coupling and nipple were installed. Required NDE was performed.

Steam generator level control system on loop 3 displayed erratic opera-tion during the testing of stop valves. The tracking and auto-manual relays of the controller were cleaned. Operation of the control system was verified through recorder traces.

Drumming area radiation monitor channel R-8 had failed low. The con-nection to the monitor was repaired and proper operation of channel R-8 was verified.

Radiation monitor channel R-22, waste liquid off-gas, had failed high.

The detector G.M. tube and associated connectors were cleaned to restore proper function.

Limit switches on the ice condenser glycol isolation valve, VCR-21, were causing a D.C. ground. The switches were disassembled and their contacts and connections were cleaned to remove the D.C. ground con-dition.

Nuclear instrumentation system source range channel N-32 failed low.

Tests performed on the system indicated the detector had failed. The source range detector was replaced and the detector's high voltage was adjusted for correct operation.

MR-50, containment dew point recorder,= blue pen failed low. All ter-minations in the recorder terminal were tightened. The mirrors were cleaned and the detectors were rebalanced. A general inspection of all wiring in the unit was performed.

l 1