U-602252, Revised Unit Shutdown & Power Reductions for Dec 1993

Revised Unit Shutdown & Power Reductions for Dec 1993

ML20063G203
Person / Time
Site:	Clinton
Issue date:	12/31/1993
From:	Hollon M ILLINOIS POWER CO.
To:
Shared Package
ML20063G187	List: ML20063G182 ML20063G197 U-602252, Revised Unit Shutdown & Power Reductions for Dec 1993
References
U-602252, NUDOCS 9402150358
Download: ML20063G203 (2)

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Attachment 2 to U-602252~

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D*04 UNIT SHUTDOWNS AND POWER REDUCTIONS 1

@$ DOCKET NO. 50-461 M UNIT Clinton 1

' 3 53 DATE 01/31/94- ,

@O COMPLETED BY M. C. Hollon-rnA TELEPHONE (217) 935-8881 X3537 A CD REPORT MONTH December 1993 04 (A

• METHOD OF oO TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR CORRECTIVE XHP - NO. DATE S: SCHEDULED (HOURS) REASON (1) REDUCINC POWER (2) ACTIONS / COMMENTS w  ;

93-05 930926 S 139.8 C 4: Plant shutdown Fourth Refueling Outage continued from (RF-4) continued and previous plant startup in R ""A reporting progress. '

period 931206 F 60.1 A:The "B" turbine driven 2: Plant at 5% Restored all three reactor feedwater pump reactor power feedwater pumps to (TDRFP) tripped during when manual service prior to plant glant startup while the A" TDRFP was decoupled scram inserted restart and reactor criticality at 0752 for overspeed testing on 12/9/93 and the "C" motor driven feedwater pump was out-of-service to repair an oil leak.

931209 S 22.4 C and H: 4: Plant already. Continued plant startup Continued scheduled shutdown, after achieving reactor refueling outage continued plant criticality; startup activities startup after - s nehronized to grid at after restoration of restoration of -0 17 on 12/10/93 feedwater. pumps feedwater pumps.RF-4 completed.

and reactor

criticality 93-06 931210 S- 3.5 B- 4: Turbine Turbine off-line testing ~

generator completed and generator taken off-line was respchronIzed to to perform the grid.

testing, reactor remained-critical

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Attachment 2 ' ~

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UNIT SHUTDOWNS AND POWER REDUCTIONS '.

DOCKET NO. 50-461 UNIT Clinton 1 DATE 01/31/94 COMPLETED BY M. C. Hollon TELEPHONE (217) 935-8881 X3537 REPORT MONTH December 1993 -

METHOD OF TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR CORRECTIVE NO. DATE S: SCHEDULED (HOURS) REASON (1) REDUCING POWER (2) ACTIONS / COMMENTS 93-07 931220 F 194.9 Ato and B: While attempting 1 and 2: The valve controller was swap from the "A Power was properly adjusted; Steam Jet Air Ejector reduced from additional guidance has (SJAE) to the "B" SJAE, 100% to 60% been incorporated into operation of an improperly by reducing the operation procedure calibrated valve reactor and the Off-Gas system controller led to the loss recirculation was repaired. Th'e of the "B" SJAE/Off-Gas flow and plant was restarted by train and subsequent loss inserting normal procedures and of condenser vacuum. control rods. was spchronized to the A manual scram grid at 1403 on was initiated 12/28/93.

at 60% power due to the continued decrease in vacuum.

(1) Reason A-Equipment Failure (explain), B-Maintenance.or Test, C-Refueling, D-Regulatory Restriction, E-Operator Training & License Examination, F-Administrative, G-Operational Error (explain),

H-Other (explain)

(2) Method 1-Manual, 2-Manual Scram, 3-Automatic Scram, 4-Other.(explain)

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