ML20127E651

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Monthly Operating Repts for Apr 1985
ML20127E651
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 04/30/1985
From: Maxwell D, Scott D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
85-473, NUDOCS 8505200149
Download: ML20127E651 (28)
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. OPERATING DATA REPORT e

DOCKET NO. 050-237 DATE May 1, 1985 s'

COMPLETED BY D. C. Maxwell y

TELEPHONE (815) 942-2920 i

OPERATING STATUS d.

NOTES

^

1.

Unit Name:

Dresden II 2.

Reporting Period: April, 1985 3

Licensed Thermal Power (MWt):

2.527

4. ' Nameplate Rating (Gross MWe):

3?8 5

Design Electrical Rating (Not MWe): 794 6.

Maximum Dependable Capacity (Gross MWe): 812 7.

Maximum Dependable Capacity (Net MWe):

772 8.

If Changes occur in Capacity Ratings (items 3 Through 7) Since Last Report, Give Reasons:

i'

  • N/A 9.

Power. Level to Whi-h Restricted, if Any (Net MWe):

N/A 10.

Reasons For Restrictions, if Any:

N/A This Month Yr-to-Date Cumulative.

- 11. Hours in Reporting Period 719 2,879 131,183 12.

Number of Hours Reactor Was Critical 467.0 467.0 99,202.9 13.

Reactor Reserve Shutdown Hours 0

.0 0

14. Hours Generator On-Line 402.4 402.4 97,712.2-15 Unit Reserve Shutdown Hours 0

0 0

16. ' Gross The'rmal Energy Generated (MWH) 714,813 714,513 192,052,871 17 Gross Electrical Energy Generated (MWH) 220,800 220,800 61,442.141
18. Net Electrical Energy Generated. (MWH) 206.667-197,883 58,046,509 19 Unit Service Factor 56.0 14.0 74.5 20.

Unit Availability Factor 56.0 14.0 74.5 21.

Unit Capacity Factor (Using MDC Net) 37.2 8.9 57.3 22.

Unit Capacity Factor (Using DER Net) 36.2 e

8.7 55.7 l

23.

Unit Forced Outage Rate o

o 11.2 24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Snubber inspection 62 days (t 25%) af ter start-up.

25.

If Shut Down At End Of Report Period, Estimated Date of Startup:

N/A l

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i h5200149850430 I

R ADOCK 05000237 PDR V

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l' OPERATING DATA REPORT DOCKET NO.

050-249 DATE May 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 OPERATING STATUS NOTES 1.

Unit Name:

Dresden III 2.

Repcrting Period:

April, 1985 3

Licensed Thermal Power (MWC):

2.527 4.

Nameplate Rating (Gross MWe):

82R 5.

De:Ign Electrical Rating (Net NWe): 794 6.

Maximum Dependable Capacity (Gross MWe): 812 7.

Maximum Dependable Capacity (Net MWe):_ 773 8.

If Changes occur in Capacity Ratings (Items 3 Through 7) Since Last Report, Give Reasons:

N/A 9

Power Level to Which Restricted, if Any (Net MWe):

N/A 10.

Reasons For Restrictions, if Any:

N/A This Month Yr-to-Date Cumu.l.at ive.

11. Hours in Reporting Period 719 2.879 120,768 12.

Number of Hours Reactor Was Critical 624.1 2,683.3 95.561.3

~

13.

?nactor Reserve Shutdown Hours 0

0 0

14.

Hours Generator On-Line 622.7 2,642.4 85,814.6 15 Unit Reserve Shutdown Hours 0

0 0

~

16.

Gross Thermal Energy Genetsted (MWH) 1,315,663 6,020,472 173,077,495 17.

Gross Electrical Energy Generated (MWH) 411,684 1,920,004 56,126,981

18. Net Electrical Energy Generated.(MWH) 388,937 1,830,770 53,167,000 19 Unit Service Factor 86.6 91.8 71.1

, 20.

Unit Availability Factor 86.6 91.8 71.1 21.

Unit Capacity Factor (Using MDC Net) 70.0 82.3 57.0 22.

Unit Capacity Factor (Using DER Net) 68.1 80.1 55.4 23 Unit Forced Outage Rate 13.2 8.2 12.6 24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

N/A 25.

If Shut Down At End Of Report Period, Estimated Date of Startup: May 2, 1985

-a==se--

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COMMON'JEALTH EDISON COMPANY DRZSDEN STATION MAXIMUM DAILY LOAD MONTH OF APRIL, 1985 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1

1200 700,800 2

0200 699,800 3

0400 698,900 4

0200 697,100 5

1000 697,000 6

1300 700,900 7

0200 699,500 8

0600 697,300 9

0200 669,100 10 1700 670,000 11 1800 668,400 12 0600 700,300 13 0100 674,400 14 2400 792,200 15 2300 1,067,100 16 2300 1,123,100 17 2400 1,178,300 18 2400 1,181,400

-19 2300 1,295,200 20 2400 1,396,000 21 0100 1,241,800 2400 1,328,100 22 2400 1,380,800 23 24 1300 1,403,200 25 0100 1,397,300 26 1300 1,415,900 27 0100 734,900 28 0100 669,600

(

29 1900 781,400 30 2400 728,900 31 i

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DOCKET NO. 050-237 UNIT NAME Drv dtn II UNIT SHUTDOWNS AND POWER REDUCTIONS DATE May 1, 1985

. COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 REPORT MONTH APRIL, 1985 METHOD OF LICENSEE CAUSE & CORRECTIVE NO.

DATE' TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO 4

(HOURS)

DOWN REACTOR 3 REPORT F CODE 4 CODES PREVEKr RECURRENCE None i

i i

1 1

1 l

1 1

i 1

2 3

4 1

F: Forced Reason:

Method:

Exhibit C-Instructions for S:

Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data 1

B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee i

C-Refueling 3-Automatic Scram Event Report (

) File D-Regulatory Restriction 4-Other (Explain)

(NUREG-0161)

E-Operator Training & License Examination F-Administrative 8

G-Operational Error H-Other (Explain) r

DOCKET NO,. 030-249

~~

UNIT NAME Drendsn Ill-UNIT SHUTDOWNS AND POWER REDUCTIONS DATE May 1, 1985 COMPLETED BY_ D. C. Maxwell TELEPHONE (815) 942-2920 REPORT MONTH APRIL, 1985 METHOD OF LICENSEE CAUSE & CORRECTIVE NO.

DATE' TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS)

DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 3

84-04-26 S

96:19 B

1 Recirculation piping measure-ments and repair feedwater heater.

(

1 I

i l

t 1

2 i

3 4

F: Forced Reason:

Method:

Exhibit G-Instructions for S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data i

B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee l

C-Refueling 3-Automatic Scram Event Report (

) File D-Regulatory Restriction 4-Other (Explain)

(NUREG-0161) l E-Operator Training & License Examination t

F-Administrative 1

G-Operational Error H-Other (Explain) t

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-237 UNIT II DATE Mav 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920

~ MONTH April, 1985 DAY AVERAGE' DAILY' POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 0

17 410 2

0 18 451 3_

0 19 s36 4

0 20 546 5

-0 21 529 6

0 22 560 7

0 23 629 8

0 24 689 i

e 9

o 25 681 10 n

26 saa

'i 1 0

27 690 12 0

28 56'6 13 0

29 694 14 98 30 675 15

-137 31

-2 16 169 1

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a -_. -,. z:--

. =- - - :. 2 : : -.

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249

-UNIT III DATE May 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 NONTH April, 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL-(MWe-Net)

(MVe-Net) 1 660 17 616 2

664 18 666 3

667 19 662 4

672 20 633 5

652 21 651 6

659 22 651 7

666 23 660 8

648 24 649 9

629 25 627 10 626 26 529 11 621 27 0

12 667 28 0

13 376 29 0

-14 548 30 0

~

~15 642 31 4

16.

626 3

4

UNIQUE REPORTING REQUIREMENTS-MAIN STEAM RELIEF VALVE OPERATION' Relief. valve operations during the reporting period of April, 1985,

are summarized in the following table. The table includes information

.as to-which relief valve was actuated, how it was actuated' and the

-circumstances.resulting in its actuation.

. Valves Pascription

. Unit.

-Reporting Period Actuated Actuations Conditions of Events 2c 04-01-85 to 04-30-85 None-3

'04-01-85 to 04-30-85 None

DRESDEN UNIT 2 SAFETY RELATED HAINTENANCE ^ - APRIL, 1985 NATURE OF LER OR OUTAGE E M CTION EQUIPMENT HAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION U2 Rx Bldg.

Preventive W.R. #28941 N/A N/A Removed and' replaced old versa valve.

Outboard Isola-tion A* Valve Accumulator Preventive W.R. #29440 N/A N/A Replaced valve internals and installed 10-27 new disc, bonnett and stem.

H2 Datector Preventive W.R. #30037 N/A N/A Tested CAM solenoid valve.

Calibration CAM Solenoid Valve Rslief Valve Preventive W.R.

  1. 30457 N/A N/A Inspected all vacuum breakers for proper Discharge Line Installation.

Vacuum Breakers, EPN #2-220-105-A-E M02-1201-2 Preventive W.R. #31079 N/A N/A Inspected and found both bulbs are good.

U2 Diesel Preventive W.R. #32130 N/A N/A Removed valve assembly and cleaned pipe.

Generator Installed new plug and bushing, body gasket, and reinstalled. valve' assembly.

Operates good.

Isolation Preventive W.R. #32222 N/A N/A Cut out and replaced valves with new ones.

Condenser Vent Valves U2 Rx Bldg. A0 Preventive W.R. #32233 N/A N/A Replaced versa valve.

Inlet Ventila-tion, EPN

  1. 2B-5741

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE.

NUMBER CAUSE RESULT CORRECTIVE ACTION Valve #2A-1341H Preventive W.R. #33024 N/A N/A Welded in new valve.

Rx R3 turn Check Preventive W.R.

  1. 33049 N/A N/A Replaced pressure seal ring.

Valva 2-1201-158 U2 HPCI Exhaust Preventive W.R. #33306 N/A N/A Replaced valve.

Drain Pot U2 Core Spray Preventive W.R.

  1. 34257 N/A N/A Adjusted packing tube stem with Molykote G M02-1402-25A paste.

D2 HPCI Room Preventive W.R.

  1. 34278 N/A N/A Replaced bearings on room cooler fan.

Cooler, EPN

  1. 2-5747 Personal and Preventive W.R.
  1. 35127 N/A N/A Greased all bearings, gears, sprockets and Equipment Door chains - oiled all bronze bushings.

CRD Hatch Close Preventive W.R. #35129 N/A N/A Closed hatch - put a light coat of grease on 0-rings.

Used same 0-rings.

Drywell Equip-Preventive W.R. #35130 N/A N/A Opened drywell equipment hatch.

ment Hatch Drywell Cover Preventive W.R.

  1. 35133 N/A N/A Removed drywell cover.

Removed 2-202-7B Valve Preventive W.R. #28734 N/A N/A Repacked valve with grafoil.

Drywell Cover Preventive W.R. #35132 N/A N/A Replaced drywell cover.

Replaced "A" Recircula-Preventive W.R. #35193 N/A N/A Rebuilt and installed seal, tion Pump, EPN

  1. 202-2A

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" Recircula-Preventive W.R. #35194 N/A N/A Removed, rebuilt and replaced seal.

tion Pump, EPN

  1. 2B-202 Recirculation Preventive W.R. #32580 N/A N/A Inspected and tightened body-bonnet, System Valves bonnet yoke, and yoke to operator boots.

"A" SBLC Relief Preventive W.R.

  1. 35436 N/A N/A Removed, replaced, and check set pressure Valve. EPN on valve.
  1. RV-ll6;A "B" SBLC Re.'ief Preventive W.R. #35437 N/A N/A Removed, replaced, and check set pressure Valve, EPN on valve.
  1. RV-1105B "A" LPCI Heat Preventive W.R. #35447 N/A N/A Removed heads for cleaning and testing.

Exchanger, EPN

  1. 2A-1503 "B" LPCI Heat Preventive W.R. #35448 N/A N/A Removed heads for cleaning and testing.

Exchanger, EPN

  1. 2B-1503 East Torus Man-Preventive W.R. #35449 N/A N/A Replaced gasket and closed hatch.

way East Torus Man-Preventive W.R. #35450 N/A N/A Opened east torus manway and secured in way open position.

West Torus Man-Preventive W.R. #35452 N/A N/A Opened west torus manway and secured in way open position.

Main Steam Line Preventive W.R. #35459 N/A N/A Removed and installed main steam line plugs.

Plugs

DRESDEN' UNIT 2 n

j

/

SAFETY RELATED MAINTENANCE - APRIL,1985 NATURE OF LER OR OUTAGE M CTION EQUIPMENT MAINTENANCE NUMBEK CAUSE RESULT CORRECTIVE ACTION CRD Support Preventive W.R. #35464 N/A N/A Removed and replaced support steel after Steel ed CRD replacement.

IRM's Preventive W.R. #15285 N/A-N/A Replaced high gain voltage pre-amplifiers 3

IRM/APRM's Torus to Dry-Preventive W.R. #29776 N/A N/A Inspected drywell to turus vacuum breaker wall vacuum 2-1601-33D.

Braaker, EPN

  1. 2-1601-33D M02-2301-10 Preventive W.R. #31077 N/A N/A Troubleshooted valve circuitry.

Local Station HPCI Turbine Preventive W.R. #32900 N/A N/A Checked HPCI turbine drain pots.

Drain Pot Drain to GSLO, EPN

  1. R02-2301-63C Reactor Head Preventive W.R. #35134 N/A N/A Removed Rx head dryer and separator.

Removed-Reactor Head Preventive W.R. #35135 N/A N/A Installed Rx head dryer and separator.

Replaced 4

Safety Valves, Preventive W.R. #35470 N/A N/A Installed and removed gags on 8 safety EPN #2-203 valves.

i HPCI Oil Tank, Preventive W.R. #35488 N/A N/A Removed piping for Q.C. inspection.

'EPN #2-2302 Reinstalled with new flex-gaskets.

Safety Valve A, Preventive W.R. #35493 N/A N/A Removed and installed valves.

EPN #2-203-A

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE. -~ APRIL, 1985-NATURE OF-LER OR OUTAGE MALFUNCTION

' EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Safety Valve B, Preventive W.R. #35494 N/A N/A Removed and replaced valves.

EPN #2-202-B Safety Valve C, Preventive W.R. #35495 N/A N/A Removed and installed safety valves.

EPN #2-203-C Safety Valve D, Preventive W.R. #35496 N/A N/A Removed and replaced valve.

EPN #2-203-D D2 Racircula-Preventive W.R. #35564 N/A N/A Checked grease in limitorque and yoke tion Piping bolts for tightness.

Suction Valve, EPN #2-M0-202-4B D2 Recircula-Preventive W.R. #35565 N/A N/A Checked grease in limitorque and yoke tion Piping bolts for tightness.

Suction Valve D2 Recircula-Preventive W.R.

  1. 35566 N/A N/A Checked grease in limitorque and yoke tion Piping bolts for tightness.

Discharge Valve, EPN #2-M0202-5B D2 Rx Insula-Preventive W.R. #36191 N/A N/A Installed vent lines and Rx head insula-tion and Vent tion.

Lines D2 Rx Shield Preventive W.R. #36194 N/A N/A Removed Rx shield blocks.

Blocks Electrical Pene~ Preventive W.R. #36220 N/A N/A Removed valve bonnet and free-up valve tration 202F stem.

DRESDEN UNIT 2

SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE WWCTION EQUIPMENT' HAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION U2 Suppression Preventive W.R. #36340 N/A N/A Replaced door on recorder 2-1640-200B.

Pool Temp.

Rscorder, EPN

  1. 2-1640-200B U2 125V Preventive W.R. #36438 N/A N/A Hooked-up discharge test.

Batteries U2 24/48 Top B Preventive W.R. #36593 N/A N/A Adjusted voltage.

Battery Charger Shutdown Coolin ; Preventive W.R. #36686 N/A N/A Installed motor and checked Amps.

Discharge Valve U2 CRD Drift Preventive W.R. #36715 N/A N/A Probe repaired during CRD overhaul.

Alarm F6 Bus 29 C Dry-Preventive W.R. #36733 N/A N/A Replaced coil and adjusted relay.

well Blower Trip Relay Bus 28 C Dry-Preventive W.R. #36734 N/A N/A Replaced coil and adjusted relay.

well Blower Trip Relay Local Control Preventive W.R.'#36981 N/A N/A Found wire clip in way causing bulb P.B.,

EPN inability to screw in.

Moved clip.

  1. 1402-25A Indication Con-Preventive W.R. #36982 N/A N/A Replaced light bulb.

trol, EPN #MO-1501-22B Snubbers (11)

Preventive W.R. #37126 N/A N/A Removed and replaced snubbers for func-tional testing.

~,

DRESDEN UNIT 2

SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Snubbers (4)

Preventive W.R. #37128 N/A N/A Removed and replaced snubbers for func-tional testing.

D2 Isolation Preventive'W.R. #37342 N/A N/A Removed and replaced manway cover for Condenser, EPN inspection.

  1. 2-1300 D2 Isolation Preventive W.R. #37343 N/A N/A Removed and installed playwood cover on Condenser isolation condenser discharge pipe.

Isolation Preventive W.R. #37535 N/A N/A Tightened handwheel and placed spring pin-Valve back into hole in shaft.

(Slipped out.)

Drywell Equip.

Preventive W.R. #37705 N/A N/A Removed and replaced old oiler.

Drain Recirc.

Valve 2-2001-4 Torus Temp.

Preventive W.R. #38014 N/A N/A Replaced door on recorder 2-1640-200A.

Recorder, EPN

  1. TR2-1640-200A Flange On Line Preventive W.R.
  1. 38045

'N/A N/A Tightened flange and replaced gasket.

  1. 2-2306-24 Auxiliary Preventive W.R. #38046 N/A N/A Adjusted and repacked auxiliary cooling Cooling Piping pump.

2-2301-57 2-2301-81 Preventive W.R.

  1. 38047 N/A N/A Adjusted and repacked valve.

Drywell Equip.

Preventive W.R. #38196 N/A N/A Replaced.sb}cns4oid.

Sump Isolation

. D i % ~,',

Valve, EPN t

'b

  1. AO-2-2001-6 T

M

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - APRIL, 1985 UATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Isolation Preventivg W.R.

  1. 38214 N/A N/A Performed surface preparation and coating Condanser in U2 isolation condenser.

MO Valve LPCI Preventive W.R. #38389 N/A N/A Installed pipe and pipe cap.

System, EPN

  1. 2-1501-3A Torus Preventive W.R. #38429 N/A N/A Performed surface preparation and coating in Unit 2 torus.

HPCI GSLO Cond.

Preventiw W.R. #38481 N/A N/A Repaired loose handle.

Exhauster Breaker Scram Air Dump Preventive W.R. #38531 N/A N/A Inspected retainer and relay.

Both looked System Relay, ok.

EPN #R12R2 of 2RB-190 Rx Level Con-Preventive W.R. #38532 N/A N/A Replaced nipple.

trol Pressure Transmitter, EPN #PI2-647B Rx Pressure Preventive W.R. #38533 N/A N/A Replaced nipple.

Transmitter, EPN #PI2-654 LPCI #350 Preventive W.R.

  1. 38534 N/A N/A Replaced nipple.

Permissive Pres sure Switch, EPN #263-52 A &

B

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - AJ'RIL, 1985 NATURE OF LER OR OUTAGE UNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Rx Pressure Preventive W.R. #38535 N/A N/A Replaced nipple.

600 psi Scram Bypass Switch, EPN #263-51A &

B Sustained High Preventive W.R. #38536 N/A N/A Replaced nipple.

Rx Pressure Switch (ECCS),

  • EPN #263-53A,B, C,D Decon Flange A Preventive W.R.
  1. 38754 N/A N/A Removed flange and installed decon equipment.

Decon Flange B Preventive W.R. #38755 N/A N/A Removed flange and installed decon equipment.

Wide Ranbe Preventive W.R. #38760

-J N/A N/A Calibrated transmitter.

Viatran, EPN

  1. LT2-263A & B ATWAS Topaz Preventive W.R.
  1. 38829 N/A N/A Relamped power light with like for like Static Inverter replacement.

"B" D2 Hx Head Preventive W.R. #38911 N/A N/A Removed insulation and vent lines Insulation and Vent Lines West Torus Preventive W.R. #39002 N/A N/A Piping chargers removed to facilitate Level Indica-draining torus.

tion

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - UNIT 2 NATURE OF LER OR OUTAGE FUNCTION f'

EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRE TIVE ACTION W:st Torus Preventive W.R. #39003 N/A N/A Reconnected torus drain piping and hangers Level Indica-associated with torus level indications tion piping system.

ad O

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE-NUMBER CAUSE RESULT CORRECTIVZ ACTION

.ASCO Solenoid Preventive.W.R. #25447 N/A N/A Rebuilt D8, G3, C3 and G7.

Tightened -

Valves fitting on all others.

M03-1402-24C Preventive W.R. #29397 N/A N/A Installed new green lens cover.

Local Control Sta.

Turbine Stop Preventive W.R. #29664 N/A N/A.

Adjusted limit on #2 stop valve.

Valves CRD 38-47 123 Preventive W.R. #33776 N/A N/A Replaced,123 valve with like for like.

Valve Refuel Grapple Preventive W.R.

  1. 33847 N/A N/A Replaced monorail hoist cable.

Personnel Preventive W.R. #33954 N/A N/A Installed and removed strongback on inner Access Door personnel door.

CRD Accumulator Preventive W.R. #34129

-J N/A N/A Tightened loose air fittings.

50-15 Scram Pilot Preventive W.R. #35904 N/A N/A-Rebuilt solenoids.

Solenoid 10-23 Scram Pilot Preventive W.R. #35905 N/A N/A Rebuilt solenoid.

Solenoid 14-23 Scram Pilot Preventive W.R. #35906 N/A N/A Rebuilt solenoid.

Solenoid 26-59 Scram Solenoid Preventive W.R. #35907 N/A N/A Rebuilt solenoid.

10-51

DRESDEN UNIT 3

SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE E N CTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Scram Pilot Preventive W.R. #35908 N/A N/A Rebuilt solenoid.

Solenoid 06-19 Scram Pilot Preventivd W.R. #35909 N/A N/A Rebuilt solenoid.

Solenoid 14-11 Scram Pilot Preventive W.R. #35910 N/A N/A Rebuilt solenoid.

Solenoid 26-03 Accumulator Preventive W.R.

  1. 35914 N/A N/A Rebuilt solenoid.
  1. 06-39 Motor Control Preventive W.R. #36252 N/A N/A Replaced light bult and fully screwed Valve Local it into socket.

Station CRD ASCO Preventive W.R. #37041 N/A N/A Tightened all fittings.

Solenoid CRD ASCO Preventive W.R. #37044 N/A N/A Rebuilt solenoids.

Solenoids CRD ASCO Preventive W.R. #37048 N/A N/A Rebuilt solenoids.

Solenoids CRD ASCO Preventive W.R. #37049 N/A N/A Rebuilt solenoids.

Solenoids CRD ASCO Preventive W.R.

  1. 37050 N/A N/A Rebuilt solenoids.

Solenoids CRD ASCO Preventive W.R. #37051 N/A N/A Rebuilt solenoids.

Solenoids t

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE N M ION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CRD ASCO Preventive W.R. #37052 N/A N/A Rebuilt solenoids.

Solanoids CRD ASCO

' Preventive W.R. #37054 N/A N/A Rebuilt solenoids.

Solenoids CRD ASCO Preventivd W.R. #37057 N/A N/A Tightened all fittings.

Solenoids M03-2301-35 Preventive W.R. #37297 N/A N/A Replaced light bulb.

Local Ind.

M03-1001-2B Preventive W.R. #37298 N/A' N/A Replaced light bulb.

ASCO Solenoid Corrective W.R.

  1. 25468 N/A N/A Overhauled ASCO valves on CRD accumu-Valves (117 &

lators.

118)

U3 Turbine Corrective W.R. #27775

' --J N/A N/A Replaced limit switches on #1, #3 and Valves

  1. 4 C.I.V.'s.

MSL Log Rad Modification W.R.

N/A N/A Installed new type time delay kit on Monitor Spare,

  1. 34944 the spare MSL log rad monitor'.

EPN #3-1705-2 (A-D)

HPCI Turning Preventive W.R. #37611 N/A N/A Investigated HPCI turning gear signal-Gear Lights light - nothing wrong.LPRM 48-25A Preventive W.R. #37153 N/A N/A Investigated signal lights on LPRM 48-25A - nothing wrong.

Drywell Equip.

Preventive W.R. #37915 N/A N/A Adjusted limit switch.

DR Isol., EPN

  1. V-2001-5

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q DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE E M CTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION M03-1501-3B Preventive W.R. #37964 N/A N/A

_ Installed new relay.

y LPCI Heat Ex-Preventive W.R. #38278 N/A N/A Replaced cap screw on limit cover, changer Tube Installed nipple and end cap.

Discharge Vuve EPN #M03-1501-3A M03-1501-3A Preventiva W.R. #38322 N/A N/A Adjusted open limit and closed limit.

Oper. Red Light U3 HPCI Room Preventive W.R. #38478 N/A N/A Cleaned and adjusted switch.

Cooler Fan LPRM 3B 40-41 Preventive W.R. #38691 N/A N/A Performed plateau on LPRM 40-41B.

APRM Channel #2 LPRM 38-32-33 Preventive W.R. #38868 N/A N/A Performed plateau on LPRM 32-33.LPRM 16-33B Preventive W.R. #39037 N/A N/A Performed plateau on LPRM 16-33B.

HPCI M02301-36 Preventive W.R. #39247 N/A N/A Replaced light cocket.

2/3 Local Lamp Indicatoi LPCI 1501-19 Preventive W.R. #39249 N/A N/A Replaced bulb.

M.0. Local 2/3 Lamp Indicators CRD 14-07, Preventive W.R. #39424 N/A N/A Replaced the valve bonnet gasket.

EPH #3-0305-113 LPRM Module Preventive W.R. #39552 N/A N/A Replaced Q8 transistor on board.

Board m.

DRESDEN UNIT 3

SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CRD J-7 Preventive W.R.'#39556 N/A N/A Removed, inspected and rebuilt scram pilot solenoid valves.

LPRM 32-35 D Preventive W.R. #39641 N/A N/A Performed plateau on LPRM 32-35.

(CP2) 3B LPCI/ Core Preventive W.R. #39651 N/A N/A Replaced main stationary and movable Spray Room contacts. Also replaced 3 auxiliary Cooler switches.

14-07 D2 CRD Preventive W.R. #39815 N/A N/A Adjusted stem on A0 126 valve.

U3, EPN #CV3-0305-126 CRD Accumulator Preventive W.R. #39851 N/A N/A Adjusted valve stem.

18-07 E2 125VDC Battery Preventive W.R. #39960 Charger #3A N/A N/A Repaired face of annunciator exchange with white touch-up paint.

250VDC Battery Preventive W.R.

  1. 40069 N/A N/A Adjusted float and egalize settings on charger.

SBLC "A" PP Preventive W.R. #40150 N/A N/A Cleaned out' cavity /of boron.

Packing 125VDC Battery Preventive W.R. #40214

.N/A N/A Adjusted float voltage.

Racks 24/48V Battery Preventive W.R. #40354 N/A N/A Repositioned and adjusted end brackets Racks on all 4 batteries.

U3 250VDC Preventive W.R. #40802 N/A N/A Replaced blown capacitors and bus bars.

Charger

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v DRESDEN UNIT-2/3 SAFETY RELATED MAINTENANCE '- APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Circle Seal Preventive W.R. #40231 N/A N/A Rebuilt the circle seal control regulator.

Control Regu-lator Standby Diesel Preventive W.R. #41993 N/A N/A Rebuilt diesel air start motor.

Engina Air Start Motors Diesel Genera-Preventive W.R. #42004 N/A N/A Rebuilt diesel air start motor.

tor Air Start Motors Diesel Genera-Preventive W.R. #42008 N/A N/A Rebuilt diesel air start motor.

tor Air Start Motor Spare U2/3 CRD Preventive W.R. #42371 N/A N/A Rebuilt spare CRD.

Accumulators Spare U2/3 CRD Preventive W.R. #42372 N/A N/A Rebuilt spare CRD.

Accumulators Quad's Safety Preventive W.R. #40608 N/A N/A Tested Q.C. MSL safety valve.

Valve Spare Quad's Safety Preventive W.R. #40609 N/A N/A Tested Q.C. MSL safety valve.

Valve Spare Quad's Safety Preventive W.R. #40610 N/A N/A Tested Q.C. MSL safety valve.

Y Valve Spare Quad's Safety Preventive W.R. #40611 N/A N/A Tested Q.C. MSL safety valve.

Valve Spare

DRESDEN UNIT 2/3 SAFETY RELATED MAINTENANCE - APRIL, 1985 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION ARM Sansor Preventive W.R. #42318 N/A N/A Recalibrated spare ARM sensor convertor.

Convertor 2/3 SUGT System Corrective W.R. #42889 N/A N/A Replaced position indicator.

A & B Crosstie Valve #2/3 7509 2/3 SBGT Outlet Corrective W.R. #42890 N/A N/A Replaced position indicator.

Valve #2/3 7506 B

SBGT Outlet Valve #2/3 7506A i

-- c.-

a..

SUMMARY

OF OPERATING. EXPERIENCE UNIT TWO APRIL, 1985 04-01 to'04 The Unit-2' refueling outage continued until 0438 hours0.00507 days <br />0.122 hours <br />7.242063e-4 weeks <br />1.66659e-4 months <br /> of April 14th..The vessel internals were re-installed, the Rx head was re-positioned and CRD's were time'd and functionally' tested. The Rx criticality checks were completed on April 10th.-

04-14 to 04 'The Rx was made' critical (prior to coming on line) at.

0258 hours0.00299 days <br />0.0717 hours <br />4.265873e-4 weeks <br />9.8169e-5 months <br /> of April 13th and the turbine was placed in.

service at 0438 hours0.00507 days <br />0.122 hours <br />7.242063e-4 weeks <br />1.66659e-4 months <br /> of April-14th. Normal low power

testing of the'new fuel and all the CRD's was completed by April 17th. 'The unit load was steadily increased-during the remainder of the month (except for normal weekend surveillances), reaching a power level of 757 MWe.. The capacity factor for the month was 55.96%

and availability was 55.96%.

m-

+-

'J. ; : #.

SUMMARY

OF OPERATING EXPERIENCE-UNIT THREE APRIL; 1985

~04-01 to 04 Unit 3 entered the month operating at a power level of 695 MWe and operated continuously-(with' normal:

power reductions for weekend surveillances) until April 26th at 2241 hours0.0259 days <br />0.623 hours <br />0.00371 weeks <br />8.527005e-4 months <br /> when it was taken off-line to take measurements of the recirculating piping (in preparation for th'e fall-1985 recirculation pipe replacement) and to repair the feedwater heaters. The unit was off-line during the remainder of the month.

Capacity factor for the month was 68.82% and the availability was 86.60%.

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- CN Commonwealth Edison

[

~* '

O

) Dresden Nucleir Power St:ti:n

'~

c-R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 May 1, 1985 DJS LTR:

85-47'3 Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission-Washington, DC 20555 Attention: Document Control Desk 4

Dear Sir:

Enclosed, please find Dresden Station's operating, data for last month. This information is supplied to your office per the instruc-tions set forth in Regulatory Guide 1.16.

Sincerely, k S.h D. - J. Scott fStationManager Dresden Nuclear Power Station DJS:DCM:hjb Enclosure L

cc: Region III, Regulatory Operations, U.S. NRC E

Chief, Division Nuclear Safety, State of IL U.S. NRC, Document Management Branch Nuclear Licensing Administrator Nuclear Fuel Services Manager Nuc. Sta. Div. Vice Pres.

Manager, Tech. Nuc. Sta.

Tech. Staff AE On-Site NRC Inspector

.Sta. Nuc. Eng. Dept.

Comptroller's Office PIP Coordinator INPO Records Center File /NRC Op. Data File / Numerical f\\

gi

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