ML17329A055

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Revised Monthly Operating Rept for Apr 1991 for DC Cook Unit 1
ML17329A055
Person / Time
Site: Cook American Electric Power icon.png
Issue date: 04/30/1991
From: Schimmel E
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17329A053 List:
References
NUDOCS 9106190151
Download: ML17329A055 (1)


Text

UNIT SHUTDOWNS AND POWER REIXJCTIONS REPORT KM8: April 1991 (Revised)

DOCKS'O:

UNIT NAME:

IRK:

OGMPIKTED BY:

Tl<ZZXEC5E'0-315 D.C.

COOK UNIT 1 June 5, 1991 E.C. Schhmel (616) 465-5901 MEEHOD OF SHUITING LICENSEE IXIK GABON IXNN EVENT SYSTEM QMEGNENZ CAUSE AND COERECTIVE ACTION KO NO.

DATE TYPE HOURS REASON REACTOR RE'XGEK NO.

CODE CODE PREVENT REKSRRIXCE 292 910406 S

N/A N/A zz zzzzzz Unit pcver was recb.wed to 70% RTP starting 1055 hours0.0122 days <br />0.293 hours <br />0.00174 weeks <br />4.014275e-4 months <br /> on 910406 to allow for testing of the main turbine control valves, moisture separator reheaters, and to collect data on the main transformer.

1he unit was returned to 1004 RTP on 910407 at 1723 hours0.0199 days <br />0.479 hours <br />0.00285 weeks <br />6.556015e-4 months <br /> EDT.

293 910420 S

261.5 PDR ADOCK 910605 9106190151 9

R 05000315 PDR I

1 2

F:

Forced Reason:

S:

Scheduled A:

Ectuipment Failure (Explain)

B:

Maintenance or Test C:

Refueling D:

Regulatory Restriction E:

Operator Training and Li~lamination F:

Acbninistrative G:

Operational Error (Explain)

H:

Other (Explain)

N/A 3

Method:

1:

Manual 2:

Manual Scram 3:

Automatic Scram 4:

Other (Explain)

The unit was removed fram service at 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br /> on 910420 for main transformer inspection. ~ inspection indicated arcing had occurred among several bolts and nuts installed during a 1985 transformer repair.

Ghe bolt orientation was corrected to avoid the potential for arcing.

%he unit was in Miode 5 at the end of the reporting period.

(%he unit was returned to service on 910505).

4 5

Exhibit G Instructions Exhibit I:

Same Scauze for preparation of data entry sheets for Licensee Event Report (IER) File (NUREG 0161)