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Monthly Operating Rept for May 1981
	ML20066D522
Person / Time
Site:	Cook
Issue date:	06/08/1981
From:	Tetzlaff A; INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	;
Shared Package
ML20066D479	List: ML20066D476; ML20066D495; ML20066D522;
References
	NUDOCS 8211110381
	Download: ML20066D522 (6)
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DGCKET NO. 50-316 UNIT 2 '

DATE 6-4-81 CO..?LETED EY A. L. Tetzlaff TELE? HONE 616-465-5901 P.ONTH l'a v 1981 DAY AVER /.GE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-Net)

(MWe-Net) 1 1/

2 13 3

19 '

4 20 5

21 15 6

?.?.

395 7

23 110 8

24 443 9

25 453 10 25 587 11 27 676 12 2S 781 29 868 13 14 30 393 15 31 779 15 INSTRUCTIONS Cn this format list the average daily unit power level in MWe-Net for each cay in the reporting con:h.

Cc.T. cute to the nearest whcie negawatt.

UNITSilUTDOWNS AND POWER REDUCTIONS DOCKET No. 50-316 UNIT NAME D.C. Cook - Unit 2.

DATE 6-11-81 f4ay, 1981 COMPLETEI) fly B.A. Svensson ILEPORT MONTil T El.EPilONE (616) 465-5901 PAGE 1 of 2 w.

E E

,$g 3

$ Ej Licensee

[ t, f,

Cause & Concesive No.

1) ate g

Eg s

.3 s 5 Event g,?

g3 Atilon to fE 5

j gg g Repor: #

mU U

Prevent Recunence F

g 6

93 810314 S

492.5 B&C 1

N.A.

ZZ ZZZZZZ The unit was removed for Cycle II - III Cont'd refueling outage on 810314.

Following completion of the outage work and low power physics testing the unit was re-turned to service on 810521 at 1230 hours0.0142 days 0.342 hours 0.00203 weeks 4.68015e-4 months . The total length of the outage was 1643.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

94 810521 F

10.5 A

3 N.A.

CH INSTRU Reactor /Terbine trip due to Low-Low le' vel in No. 3 Steam Generator.

Feed-water regulating valve, FRV-230, failed closed due to solenoid valve failure. Solenoid valve was repaired.

95 810523 F

15.8 A

2 N.A.

HA PIPEXX Turbine tripped manually due to con-trol oil line break at instrument con-nt-tion on the east control fluid pump discricrge pipe.

Piping weld repaired.

NDE performed on weld repair and sim-ilar welds on all three control fluid pumps.

I 2

3 4

1: Fmeed Reason:

Method:

Exhible G. Instructions S: Scheduleil A Eiluipment failnie(Explain) 1 Manual for Preparation of Data ll4taintenance ni Test 2 ManualSeram.

Ensiy Sheets for I icensee C Refueling 3 Automatic Scram.

Event Repost (1 ER) File INUREG-D Itegulatory Restriclion Other (E xplain) 0161)

E Ope:atos Daining & License lixaminailun F-Administiative 5

G.Operailonal Esior IExplain) lishibit I. Saine Somee P)/77)

Il Olher (Explain) 6

50-316 UNITSilUTl) OWNS ANI) POWER REDUCTIONS DOCKET NO.

UNIT NAhlE D.C. Cook - Unit 2 -

DATE 6-11-81 May, 1981 COMPLETED llY B.A. Svensson HEPORT A10NTil TELErilONE (616) 465-5901 PAGE 2 of 2 E

E

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[

IJctlisce

(*t, Causc & Cussective No.

Dale g;

3g

,gte Evens gj

n. 3 Action in

$E rE j ;f, g Repurl #

mO H

Prevent Recurrence 5

96 810530 F

8.6 H

3 N.A.

HA XXXXXX Reactor / Turbine trip. Trip occurred' while filling west F.P. Turbine Lube Oil Filter (west side). A drop in lube oil pressure occurred which tripped the W.F.P. Turbine. The Re-actor trip was due to low-Low level in No. 2 Steam Generator caused by the decrease in feedwater flow.

The reason for the drop in lube oil pres-sure could not be determined and is still under investigation.

l 2

3 4

F: Fmceti lleason:

Method:

Exhible G. Instructions S: Schettuical A.Espiipment Failuse(Explain)

-I Manual for Preparation of Data 11 Maintenance niTest

2. Manual Scram.

Entiy Sheets fm 1.icensee C Refueling 3 Automatic Scram.

Event Report II.ER) File INDREG-D Regulaiosy Resiniction

-l-Other (Explain) 0161) li Opciator Training & License Examinallon F-Ailminisisative 5

G Operational Esior li!xplain)

'Eshibit I Same Somce C1/77)

Il Other (Explain)

]

o Docket No.:

50-316 Unit Name:

D. C. Cook Unit 2 Completed By:

C. E. Murphy Telephone:

(616) 465-59.01 Date: June-10, 1981 Page:

1 of 1 4

MONTHLY OPERATING EXPERIENCES--MAY,1981 -

.H_i_ghlights :

The Unit entered this reporting period in Mode 5.

Preparations were in progress to return the Unit to operating status from a 68 day Refueling Outage.

Filling of the Reactor Coolant System was started at 1926 on May 5, and heatup at 1026 on May 6.

A Unit cooldown was initiated at 1944 on May 12, to repair a leaking loop Seal Drain Valve on one of the Pressurizer Safety Valves.

Repairs were completed on the drain valve and plant heatup restarted. The reactor was made critical at 0603 May 18, and Low Power Physics Testing was started at this time.

The Unit was initially paralleled with the system at 1230 on May 21. Several trips were encountered during the startup.

These were brought about due to steam generator levels.

At the close of this reporting period, the Unit is at 88% power and at 2315 on May 31, an increase to 95%

power was commenced.

Total electrical generation for the month was 139,660 mwh.

Summary:

5/01/81 The CD Emergency Diesel Generator was inoperable for a 9.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period for Maintenance to repair valve ESW-162.

5/07/81 R 25/R 26 The Vent Stack Monitors were inoperable for a 3.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months period 5/27/81 HV-AES-1 Fan was inoperable for a 5.75 hour8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months period to change a rollamatic filter.

5/28/81 The Turbine Driven Auxiliary' Feed Pump was inoperable for a 4.25 hour2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months period to repair a steam trap.

J

~

DOCKET NO.

50 - 316 UNIT NAME D. C. Cook - Unit No. 2 DATE 6-11-81 COMPLETED BY B. A. Svensson TELEPHONE (616) 465-5901 PAGE 1 of 1 MAJOR SAFETY-RELATED MAINTENANCE MAY, 1981 M-1 The nitrogen containment isolation check valve to the reactor coolant drain tank, N-160, was leaking by.

Lapped the valve seat and disc.

M-2 Sections of the containment divider barrier seal material were found to have cracks. Approximately 35 linear feet of the rubber seal was re-placed and reinspected.

M-3 Main steam lead No. 2 pressure instrument root valve, MPP-221V1, had a packing leak.

One packing stand bolt was broken.

Replaced the valve.

M;1 Steam generator blowdown regulating valves, DRV-311, DRV-312, DRV-321, DRV-322, DRV-331, DRV-332, DRV-341 and DRV-342 were leaking by.

Re-placed the plug, stem, cage and seat in each valve.

Reassembled valves with new gaskets and repacked valves. All valves were tested.

M-5 Plugged tubes in No.1 and No. 4 steam generators adjacent to the tube lane blocking devices.

M-6 No. 3 steam generator stop valve dump valve, MRV-231, was leaking by.

Machined the valve seats and lapped the seat.

Had the valve tested.

M-7 Volume control tank safety valve, SV-53, was leaking by.

Replaced the

~

seat o-ring and tested the valve.

M-8 Safety valve, SV-104E, on the east RHR header had a leak due to a crack at the toe of a weld just upstream of the valve.

Replaced the pipe nipple and flange at the inlet of the safety valve. Had the necessary NDE performed and completed a hydrostatic test.

M-9 Letdown isolation valve, QRV-112, had a body-to-bonnet leak.

Replaced gasket, added and adjusted packing and replaced actuator diaphragm.

Had valve tested.

M-10 The north safety injectio'n pump failed to meet discharge pressure re-quirements during a performance test.

Replaced the pump rotating assembly, mechanical seals and gasket.

Had the pump retested.

M-ll Steam generator blowdown containment isolation valve, DCR-320, had a bent stem.

Replaced valve stem and gaskets.

Repacked valve and in-stalled a new stem to actuator coupling.

Had the valve tested.

C&I-l WFA-930, non-essential service water flow indication to No. 3 upper con-tainment ventilation unit indicated full scale independent of valve po-sition.

The circuit board of the transmitter required replacement. The transmitter was recalibrated and returned to service.

.

ML20066D522

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