ML20066D712

Monthly Operating Rept for June 1981

ML20066D712
Person / Time
Site:	Cook
Issue date:	07/06/1981
From:	Gillett W INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML20066D459	List: ML20066D457 ML20066D712
References
NUDOCS 8211110524
Download: ML20066D712 (7)

Text

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O???.ATINC DATA RE? ORT

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50-316 DOCK.

NO.

7-6-81 Dn.--s-CO.st?LE TED Ey W.T. Gillett TELEPHONE 616-a'5 cC01 cFinTING STATUS N85 Donald C. Cook

2. Unir.N'se:e:

1981

2. Reponi :?sdoi:

3391

3. LI =>edTh::=:1?:wer(htW:):

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1133

4. N=:eph:: ?2d::(Cross 51We):

1100

5. Desi;:s Ele =d=1 F "2

(Nec 51We):

IIIA

6. 3'-

. := Dependshte C2p:ci:7 (Cress SIWr):

I08?

7. af axi=== rept.nd:ble C:p:ci:7 (Net 31We):

S. If Ch.=;rs Oc=r in C:paci:y R:t' ;s (1::=s Nu:nh:r 3 Threc;h 7) Since Las: Repen. Give R: sor.s:

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9. Powe-L:ve! To Whi:h R=5=i= d.If Any (Ne: MWe):

10. R= sons For R= " decs.If Any:

This Month

' Yr.4o.Da::

C = d::ive 7?O a.343 1n 6a7

!!. Hot:. s != R:por:!s;; ?:dod 714.8 2.741.3 20.aR3.a

12. Nc=b - Cf Ecu= R==orW:s Cdd=!

0 0

0

13. R::=or Rese.,e Eht::iev.:: 20 :s 711 7 2.656.4 19.696.0

14. Ect: s Cce=:cr ca.Lin, 0

0 0

15. Uni: R:se:ve Sh=:down Het.-:

2.374,202 8.657.396 62.277.n3n

16. Cross Thm..! I:::::y Ce==:=d (3:WM) 776.890 2.814,260 19.906.090

17. Cross De=:ic=1 E=c.:y Cee-=::d p.twn) 750,136 2,715,945 19,175,110 IS. Ne: Ece::i=1 En: ;y Cear:2::d C.tWE) 98.8 61.2 69.9

19. Unit Servie: F:e: r 98.8 61.?

6c.9

20. Uci: At:r.: bin:7.:::or 96.3 57.R 64.9

21. Uni: C:paci,. r::::r (Usin; >tnC Ner) 94.7 56.8 64.3

22. Unir capsci:y. :::::(Using DER Neti 1.2 1.6 13.8

23. Uni: For: d cu:: e R::,

24. Shu:do *ts scheduled Ove-Nex: 5 Mon:hs (Type. D:te.::.d Der::!on of E: chi:

5. If Sht: Down A: E.,d Of Re-cr: ? ded. Estim: red D:ce of 5:2-::p:

. 25. Units !a Tes: SI:: s IP:for to Ce==ex!:1 Open:ioni:

Tcree._s:

' Achieved INiT:A L CRIT:CALJTY INITIA L I'.ECTE:C;""Y CO?.::.:E?.C:AL 0?IRAT;ON P8i 7 r-r 8211110524 810714 PDR ADOCK 05000316 u

PDR

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-316

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UNIT 2

DATE 7-6-81 COMPLETED BY W. T. Gillett TELEPHONE 616-465-5901 MONTH June - lost DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-Net)

(MWe-Net) 1 1046 17 1073 2

1076 18 1074 3

1082 19 1075 4

1076 20 1068 5

1074 21 1077 6

1064 22 1084 7

1073 23 1079 1074 8

24 1075 1070 9

25 1065 1067 10 26 1063 11 1062 27 1068 12 295 28 1069 13 1008 29 1064 14 1055 30 1064 15 1069 31 16 1067 INSTRUCTIONS On this format list the average daily unit power level in MWe-Net for each day in the rescrting month. Ccmpute to the nearest whole megawatt.

1 DOCKETNO. 50-316 UNITSiluTDOWNS ANI) POWER REDUCTIONS UNITNAblE LC. Cook - Unit 2 DATE 7-14-81 June, 1981 COkiPLETEllilY B.A. Svensson REPORT nlONT11 TELEPilONE f 616) 465-5901

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Cause & Corsecilve No.

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97 810612 F

8.3 A

3 81-026/03L-0 EB GENERA Reactor trip was due to luss of A.C.

vital power supply CRID II.

Loss of CRID II resulted in loss of power to the reactor coolant pump breaker po-sition circuit, whi'ch looked to the reactor protection system logic as if the breaker had opened. This resulted in a reactor trip signal since reactor

~power was above permissive P-8.

The failure of CRID II was due to a fail-ure of a capacitor. The failed ca-pacitor also blew an associated fuse.

A design change has been initiated to.

replace the present capacitors with a new type rated for a higher operating temperature. The unit was returned to service the same day and power in-cre'ased to 100% by 0030 on 810613.

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3 4

F: Forced Reason:

Methinl:

Enhibit G Instructiims S: Scheduled A Eignipmens Failure (Emplain) 1 -Manual for Preparation of Dala ll Maintenance of Test 2 Manual Scram.

Entiy Sheets fin I icensee C Refueling 3 Autmnatic Scram.

Event Repost (LER) File INUREG-D Regulatiny Restelclion 4 Other (Explain) 0161)

.E-Opciator Training & License Examination F-Administialive 5

G.Operallemal Es cur IExplain) lishibit I Same Somcc l'l/77)

Il Other (linplain) n

Docket No.:

50-316 Unit Name:

D. C. Cook Unit #2 Completed By:

C. E. Murphy Telephone:

(616) 465-5901 Date: July 8, 1981 Page:

1 of 2 MONTHLY OPERATING ACTIVITIES - JUNE, 1981 Highlights:

The Unit entered this reporting period escalating the Reactor Power from 88% to 95%. The Unit was being returned to power from a 68 day refueling outage. At 0220 on June 1, the reactor was at 95% power and at 1806 the Unit reached 100% power for the first time on this core.

At 1320 on June 9, the NRC Hotline and all telephone communications was discovered to be inoperable.

Communications was established by using the micro-wave phone. This was declared an " Unusual Event" at 1335 and complete communications was restored at 1445.

The Unit operated at 100% power for the remainder of this period except as detailed in the summary.

Total electrical generation for the month was 776,890 mwh.

Summary:

6-01-81 The Containment Air Particulate and Radio Gas Monitors (R-11/R-12) were inoperable for a 9.25 hour2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> period to repair the sample pump.

6-02-81 R-11/R-12 Monitors were again inoperable from 0030 to 1330 on 6-4-81 to replace the sample pump.

6-04-81 R-11/R-12 Monitors were again inoperable for a 21 hour2.430556e-4 days <br />0.00583 hours <br />3.472222e-5 weeks <br />7.9905e-6 months <br /> period to repair the Flow Meter.

6-05-81 Reactor Power was lowered to 92% for a 5.75 hour8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> period while the Main Turbine Valves were tested.

6-06-81 R-11/R-12 Monitors were inoperable for a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> period to repair the Flow Neter.

6-08-81 Circulating Water Recorder (SG-21) was inoperable for a 21 hour2.430556e-4 days <br />0.00583 hours <br />3.472222e-5 weeks <br />7.9905e-6 months <br /> period to repair the recorder.

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, 6-12-81 The Unit tripped from 100% power at 0101 due to a false indication of loss of RCS loop flow. This trip was caused by the loss of CRID II. The CRID was repaired and 100%

reactor power was reached at 0832 on 6-11-81.

6-27-81 The West ESW pump was out of service for a 4.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period to change oil, i

Docket No.:

50-316 l

Unit Name:

D. C. Cook Unit 2

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Completed By:

C. E. Murphy Telephone:

(616) 465-5901 Date: July 8, 1981 Page:

2 of 2 Summary (continued):

6-28-81 The East ESW pump was out of service for a 6.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period to change oil.

6-29-81 The ESW Radiation Monitor (R-20) was out of service for a 3.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> period to repair the clutch.

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o DOCKET NO, 50 - 316 UNITsNAME

,D. C. Cook - Unit No. 2 DATE \\

7-la-81 COMPLETED BY B. A. Svensson TELEPHONE i(616) 465-5901 PAGE 1 of 2 MAJOR SAFETY-RELATED MAINTENANCE JUNE,1981 s

M-1 Low flow on R-ll and R-12 containment air radiation monitor.

Replaced pump. Tested satisfactorily.

M-2 IM0-270, north safety injection pump discharge cross-connect would not open and indicated a ground. Replaced motor and adjusted torque switch.

Valve tested satisfactorily.

M-3 ICM-250, boron injection tank discharge isolation valve would not open from control room.

Increased torque switch setting.

Valve retested satisfactorily.

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M-4 CD diesel jacket water expansion tank float controlled regulating valve, QT-132 was not working.

Float was replace,d. Valve tested satisfactorily.

C&I-l SG-018, containment air temperature recorder failed. The recorder servo-motor and selector switch asserably were replaced and the recorder re-turned to service.

C&I-2 When control rods for Bank D control were stepped in, Control Bank C also started to move in' prior to the overlap point. The' problem was traced to the overlap decoder board. The circuit board was replaced, the counter was reset and clocked to the proper count.

C&I-3 Annunciator 10, drop 17, power range lower detector high flux deviation auto defeat was received.

Each power range channel was defeated on an individual basis to isolate the channel. The alarm, however, failed to clear.

The averagirg circuit had failed. The card was removed and am-plifiers AIY and AZY were replaced. A function test verified the circuit's operability. The unit's calibration was performed and returned to normal operation.

C&I-4 The power actuation setpoint of the APDMS was previously calibrated for 85%. The NIS indicated 88.5% and the APDMS had not actuated. The test power supply meter indication was found reading 0.35 volts low. The actuation bistables were recalibrated to the correct values.

C&I-5 The inlet and outlet valves for DSR-301 and DSR-302 R-19 monitors were open but low flow was observed.

Rotometers and regulators No. 1 and No. 2 were removed.

The tube and diaphragm on No. 1 were replaced with spares.

, The regulator diaphragm on No. 2 was also replaced. The instruments were installed-and functionally tested.

C&I-6 Steam Generatdr No. 3 flow to Radiation Monitor Channel R-19 ceased. The blockage in the line was cleared and normal flow to R-19 was established.

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DOCKET NO.

50 - 316 UNIT NAME D. C. Cook - Unit No. 2 DATE 7-14-81 COMPLETED BY B. A. Svensson TELEPHONE (616) 465-5901 PAGE 2 of 2

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MAJOR SAFETY-RELATED MAINTENANCE JUNE, 1981 C&I-7 During the Unit 2 trip, FM0-201 and FM0-204 did not close as required.

The problem was traced to a switch on BY breaker ' A' which transmits a signal to the solid state protection system for feedwater isolation.

The failed switch was replaced and a functional test was performed to

. verify normal operation.

C&I-8 Annunciator 10, drop 17, lower detector high flux deviation was alarming with normally low quad power tilt ratio.

Replacement of a defective averaging circuit card operational amplifier cleared the spurious alarm.

C&I-9 While performing a surveillance test procedure on bus load shedding relays, a General Electric Company Model NGV-13B Relay, 27-2-T21B for bus T21B, was found with its contacts uelded together. A new NGV relay was installed, calibrated and proper operation was verified.

C&I-10 Rod position indication system for control rod D4 of control bank D in-dicated 14 steps from the demand position. Movement of control rod D4 was verified through primary coil voltage measurements. The signal con-ditioning module was adjusted for correct operation.

-C&I-11 Annunciator 2, drop 22, CAS fire detection operating alarm failed to function during surveillance test. The problem was traced to a failed annunciator card. The annunciator card was replaced and the alarm was functionally tested.

C&I-12 Main turbine stop valve B, train B, had a broken proximity switch bracket.

While the unit was in the ' trip' mode for stop valve testing the bracket was replaced.

The proximity switch operation was verified to be correct.

C&I-13 CFI-419, east RHR heat exchanger component cooling water discharge flow indication was determined to be out of specification. The instrument loop was recalibrated and. correct flow indication was verified.

C&I-14 Steam Generators No. 1 and No. 2 blowdown radiation monitor R-19 was receiving no flow through its rotometer, DFI-311. The~rotometer was dis-assembled and cleaned, and a leaking swagelok fitting was replaced to restore proper flow to R-19.

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