ML20129G832

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Monthly Operating Repts for June 1985
ML20129G832
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 06/30/1985
From: Maxwell D, Scott D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
85-721, NUDOCS 8507180294
Download: ML20129G832 (35)
v • d • e


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OPERATING DATA REPORT p'

DOCKET NO. 50-237 DATE July 1, 1985 COMPLETED BY D. C. Ma.well l TELEPHONE 815/942-2920

_. OPERATING STATUS l NOTES  !

1. Unit Name: Dresden II
2. Reporting Period: June, 1985 l 3 Licensed Thermal Power (MWt): 2.527
4. Nameplate Rating (Gross MWe): 828 5 Design Electrical Rating (Net MWe): 794
6. Maximum Dependable Capacity (Gross MWe): 812

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7. Maximum Dependable Capacity (Net MWe): 772 .
8. If Changes Occur in Capacity Ratings (Items 3 Through 7) Since Last Report, Give Reasons:

N/A

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.y 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 Cumulative
11. Hours in Reporting Period 720 4,343 132,647
12. Number of Hours Reactor Was Critical 591.8 1,714.6 100,450.5

~ ~ 13 Reactor Reserve Shutdown Hours 0 0 0

-- ~ 14 .

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Hours Generator On-Line 544.0 1,537.1 98,846.9 15 Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1,142,019 3,139,363 149,477,421 17 Gross Electrical Energy Generated (MWH) 357,496 986,622 62,207,963
18. Net Electrical Energy Generated.(MWH) 337,733 921,633 58,770,259

~ ~ 19 Unit Service Factor 76.6. 35.4 74.5

20. Unit Availability Factor 75.6 35.4 74.5
21. Unit Capacity Factor (Using MDC Net) 60.8 27.5 57.4
22. Unit Capacity Factor (Using DER Net) 59.1 26.7 55.8

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23 Unit Forced Outage Rate 24.4 17.6 11.3 24.- Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Snubber inspection on October 12, 1985 4 weeks. --

l 25 If Shut Down At End Of Report Period, Estimated Date of Startup: N/A e, ......:.

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. 6 8507180294 850630 .j PDR ADOCK 05000237 R PDR h"(

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OPERATING DATA REPORT DOCKET NO. 050-249 DATE July 1,1985  ;

COMPLETED BY D. C. Maxwell TELEPHONE 815/fM2-2920

_ _ _ OPERATING STATUS NOTES

1. Unit Name: Dresden III
2. Reporting Period: July 1, 1985 3 Licensed Thermal Power (NWt): 2.527 ,
4. Nameplate Rating (Gross MWe): 828  ;
5. Design Electrical Rating (Net MWe): 704
6. Maximum Dependable Capacity (Gross MWe): s19  ;

7 Maximum Dependable Capacity (Net MWe): 773 If Changes Occur in Capacity Ratings (items 3 Through 7) Since Last Report, Give 8.

Reasons:

N/A )

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(.,$90.tik+f G.@!.%9.~r.';: Miih+v ;&% %m. M?.*: w ' '. W :- : 'N  ;*" '

> . ' '1 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 Curoul.ative
11. Hours in Reporting Period 720 4,343 122,232
12. Number of Hours Reactor Was Critical 720.0 4,094.7 93,972.7

- ~ 13 Reactor Reserve Shutdown Hours 0 0 0

- ~~

~14. Hours Generator On-Line 720.0 4,022.0 87,1941.1 15 Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1,702,449 9,188,426 176,245,449 17 Gross Electrical Energy Generated (MWH) 534,570 2,915,517 57,122,494
18. Net Electrical Energy Generated.(MWH) 508,517 2,776,729 54,112,957 19 Unit Service Factor ' 100.0 92.6 71.3
20. Unit Availability Factor 100.0 92.6 71.3
21. Unit Capacity Factor (Using MDC Net) 91.4 82.7 57.3
22. Unit Capacity Factor (Using DER Net) 89.0 80.5 55.8 23 Unit Forced Outage Rate 0 6.7 12.5

~"~~ 2 4 . Shutdowns Scheduled ~0ver Ndxt 6 Months (Type, Date, and Duration of Each):

Refueling and Recirculation Piping Replacement outage - Fall of 1985 for approximately six (6) months.

25 If Shut Down At End Of Report Period, Estimated Date of Startup: N/A

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UNIQUE REPORTING REQUIREMENTS MAIN STEAM RELIEF VALVE OPERATIONS Relief valve operations during the reporting period of June, 1985 are summarized in the following table. The table includes information as to which relief valve was actuated, how it was actuated, and the circum-stances resulting in its actuation.

Valves Description Unit Reporting Period Actuated Actuations Conditions of Events 2 06-01-85 to 06-30-85 None 3 06-01-85 to 06-30-85 None i

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, COMMONWEALTH EDISON COMPANY DRESDEN STATION MAXIMUM DAILY LOAD MONTH OF JUNE, 1985 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1 2400 1,386,400 2 2400 1,437,700 3 2400 1,507,700 4 1400 1,577,900 5 1100 1,572,100 6 2400 1,559,300 7 0100 1,558,600 8 0100 1,465,000 9 0100 1,059,300 10 2400 741,100 11 2100 786,200 12 2000 795,200 13 1200 795,800 14 2400 1,276,100 15 1400 1,278,000 16- 2400 1,393,700 j 17 2400 1,574,300 l 18 1000 1,596,800 19 1200 800,400 i

20 1200 799,900 21 2000 1,284,400 i

l 22 2000 1,208,500 23 2400 1,280,300 24 2400 1,476,300 25 2400 1,571,800 26 0200 1,581,900 27 1300 1,583,100 28 1200 1,384,700 29 1300 1,370,700 l

30 2400 1,433,000 31

7 DOCKET NO. 050-237

'O UNIT NAME Dresden 11 UNIT SHUTDOWNS AND POWER REDUCTIONS DATE July 1, 1985 ,

COMPLETED BY D. C. Maxwell.

JUNE, 1985 TELEPHONE (815) 942-2920 REPORT MONTH i

HETHOD OF LICENSEE NO. DATE' TYPEl DURATION CAUSE & CORRECTIVE REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 3 85-06-09 F 119:30 A 3 85-027-0 -- --

2B MG Set problems and snubber l . (119.5) inspection, also Rx Mod switch problems caused by scram.

3 85-06-18 F 56.32 .

A 3 85-028-0 -- --

(56.5) , Rx scram because of high level in S.D.V.

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F: Forced Reason:

S: Method: Exhibit G-Instructions for

! Scheduled A-Equipment Failure (Explain) 1-Manual Freparation of Data l

B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3 -Automatic Scram D-Regulatory Restriction Event Report ( ) File 4-Other (Explain) (NUREG-0161)

E-Operator Training & License Examination .

F-Administrative i

G-Operational Error H-Other (Explain)

DOCKET NO. 050-249 UNIT NAME Dresdsn 111 UNIT SHUTDOWNS AND POWER REDUCTIONS DATE July 1, 1985- 4 COMPLETED BY D. C. Maxwell, i

TELEPHONE (815) 942-2920 REPORT MONTH JUNE, 1985 i

METHOD OF LICENSEE CAUSE & CORRECTIVE NO. DATE' TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT j ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 4

None l

j .

1 2 3 4 F: Forced Reason:

Method: Exhibit G-Instructions for S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (

D-Regulatory Restriction ) File 4-Other (Explain) (NUREG-0161)

E-Operator Training & License Examination .

F-Administrative i

G-Operational Error H-Other (Explain) (

f AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-237 UNIT II DATE July 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 MONTH JUNE, 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MVe-Net) 1 736 17 683-2 667 18 517 3 705 19 0 4 750 20 0 5 748 21 240 6 749 22 428 7 714 23 458 8 548 24 594 9 116 25 714 10 0 26 l

731 11 0 772 27 12 0 28 758 i 13 0 29 768 14 207 30 611 15 448 31 ---

16 554 I

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-249 UNIT III DATE July 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 MONTH JUNE,'1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 506 17 723 2 652 18 752 3 735 19 767 4 735 20 759 5 741 21 763 6 734 22 679 t

7 732 23 674 8 707 24 749 9 682 25 737 10 705 26 l 712 11 734 27 737 12 754 28 677 13 752 29 534 14 712 30 714 i

15 736 31 ---

16 708 l

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DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 .

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

~MSL Hi Rad Comp. Preventive W.R. #34259 ---

N/A N/A Jumpered appropriate points - correct Pt. alarms came up.

CRD Module 22-07 Corrective W.R. #38927 N/A N/A Replaced accumulator.

Inboard "B" MSIV Corrective W.R. #40237 ---

N/A N/A Changed old air cylinder and "E" and "D" Air Supply, seal rings.

A0-2-203-1B Feedwater Inboard Corrective W.R. #40271 N/A N/A Replaced seal and dish on feedwater "B" Feedcheck check valve.

2-220-58B 24/48 Bt. Bottar Preventive W.R. #40278 ---

N/A N/A Temperature external battery used to Charger pick-up relay.

U2 LPCI Relay Preventive W.R. #40335 ---

N/A N/A Picked up voltage checked.

1530-109 Local Accumulator Preventive W.R. #40368 ---

N/A N/A Replaced water filled switch.

Alarm Indicating Panel Primary Contain- Preventive W.R. #40370 ---

N/A N/A Replaced coil assembly and adjusted ment (Relay 595- relay.

105AX LPCI Sys. I 1530- Preventive W.R. #40398 ---

N/A N/A Adjusted and cleaned relay.

133 (BU) Time Dalay Relay Second Contain- Corrective W.R. #40431 ---

N/A N/A Installed new valve stem - cleaned ment Penetration valve.

D2 202-A Recirc. Preventive W.R. #40435 N/A N/A Installed blind flange.

PP Decon Flange

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 .

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" R:cire. Suc- Corrective W.R. # 40452 ---

N/A N/A Tightened bolts.

tion Line Sup-ports 202-B-M-1201/103/104/105 2A-202-W-102 & Corrective W.R. #40473 N/A N/A Tightened bolts.

106 Recirc. Pump Supports D2 Personnel Preventive W.R. #40522 ---

N/A N/A Installed new gasket.

Door

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2-203-B Recire. Preventive W.R. #40531  ; N/A N/A Installed blind flange.

PP Decon. '

D022 1600 MISC- Cort etive W.R. #40565 N/A N/A Installed new gasket and strong back MOI Personnel on inner door.

Access Hatch ,

A0-2-1601-21 Corrective W.R. #40548 ---

N/A N/A Installed new gasket.

Purge Valve D2 "C" Electro- Corrective W.R. #40649 ---

N/A N/A Replaced cracked nipple.

matic Valve 103 Clean-up Line Preventive W.R. #40667 ---

N/A N/A Clamp removed.

1201 Support 1201-M-101 Pratt Vent Valves Corrective W.R. #40689 ---

N/A N/A Installed new torque factors - attached 2-1601-23 MOD proc.

Pratt Vent Valve Preventive W.R. #40690 ---

N/A N/A Stacked and installed keystock.

2-1601-56 t

p DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 .

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Pratt Vent Valve Corrective W.R. #40691 N/A N/A Replaced bolts, stacked and torqued.

2-1601-22 Pratt Vent Valve Preventive W.R. #40692 ---

N/A N/A Replaced screws, welded keystock.

2-1601-21 Pratt Vent Valve Preventive W.R. #40693 N/A N/A Replaced bolts, welded keystock.

2-1601-20B Pratt-Vent Valve Preventive W.R. #40694 N/A N/A Replaced bolts, welded keystock.

2-1601-20A Pratt Vent Valve Corrective W.R. #40695 N/A N/A Changed bolts and torqued - installed 2-1601-63 keystock.

Pratt Vent Valve Preventive W.R. #40696 N/A N/A Changed bolts and torqued - installed 2-1601-60 keystock.

Pratt Vent Valve Corrective W.R. #40697 ---

N/A N/A Valve was not exposed - torqued.

2-1601-24 M0-2-1501-3A Preventive W.R. #40717 ---

N/A N/A Everything ok.

CCSW Vault Preventive W.R. #40738 ---

N/A N/A Installed strongback on door.

Strongback Door CCSW Vault Floor Corrective W.R. #40752 ---

N/A N/A Unplugged drain.

Drain U2 D/G Cooling Corrective W.R. #40763 N/A N/A Tightened support nut and pipe.

H.O. Discharge U2 Bustie Preventive W.R. #40784 N/A N/A Installed and removed jumpers.

Breakers

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2B Squib Valve Preventive W.R. #40890 ---

N/A N/A Replaced squib valve.

2-1106B Constant Spring Preventive W.R. #40925 N/A N/A Moved and replaced spring hanger -

Hanger cleaned valve.

D/W Air Sample Corrective W.R. #40934 ---

N/A N/A Cleaned valve.

Valve A02-8501-1A D/W Sample Valve Corrective W.R. #40935 ---

N/A N/A Cleaned valve.

A02-9206A 2A D/G Starting Preventive W.R. #40961 ---

N/A N/A Replaced switch.

Air Comp.

U2 Emergency Corrective W.R. #40983 ---

N/A N/A Replaced line and union on pipe.

Diesel Generator Panel 902-36 Preventive W.R. #41021 ---

N/A N/A Replaced all power cables.

U2 305-111 Corrective W.R. #41060 ---

N/A N/A Replaced ring.

Accumulator 50-39 N-10 Bellows Seal Corrective W.R. #41121 ---

N/A N/A Drilled, re-cut and rebent tubing Penetration into place.

X-107A Refuel Platform Corrective W.R. #41123 N/A N/A Adjusted limits.

4KV Breaker 2302 Corrective W.R. #41131 ---

N/A N/A Replaced SBM switch.

Beam Brace on Preventive W.R. #41135 ---

N/A N/A Replaced I-Beam, replaced D/W air lines.

Line 2-1201-8"

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DRESDEN UNIT 2-SAFETY RELATED MAINTENANCE - JUNE, 1985 ,

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Torus Aerial Corrective W.R. #41152 N/A N/A Spot cleaned and painted.

Paint Fuel Assembly Preventive W.R. #41180 ---

N/A N/A Removed and drilled stud - re-tapped hole, 2-2001-3 Valve Corrective W.R. #41182 N/A N/A Replaced broken oiler.

Main Steam Line Preventive W.R. #41186 N/A N/A Stroke tested snubber.

3001A Weld

  1. 8X-3 D2 Startup Hydro Preventive W.R. #41188 ---

N/A N/A Calibrated gauge.

Refuel Grapple Corrective W.R. #41190 ---

N/A N/A Installed new air and hose fittings.

U2 Scram Valves Preventive W.R. #41191 ---

N/A N/A Sprayed and exercized micro switch CU2-0305-126 and boots.

127 125VDC Ground Corrective W.R. #41221 ----

N/A N/A Cleaned relay.

Valve #2-5499- Corrective W.R. #41281 N/A N/A Cleaned valve.

71B SPM #21, 2-750- Preventive W.R. #41290 ---

N/A N/A No problems found.

lA APRM Channel #3 Preventive W.R. #41302 N/A N/A Replaced burnt-out light bulb.

LPCI 2B-1503 Corrective W.R. #41341 N/A N/A "Non-Safety" related.

Heat Exchanger Snubbers (3) Preventive W..R. #41371 ---

N/A N/A Disassembled snubbers for inspection.

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DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Main Steam Line Preventive W.R. #41450 ---

N/A N/A Indications removed.

3001D, Weld

  1. 20-K14 LPCI Line 1504 Preventive W.R. #41647 N/A N/A Removed and installed pipe clamp.

Snubber Clamp 1527 Accumulator Corrective W.R. #41658 ---

N/A N/A Replaced CRD accumulator - replaced

  1. 26-03 0-ring.

1501-28A and Preventive W.R. #41719 ---

N/A N/A Removed drain line and flange and 1501-27A conrected 4" compressor discharge pipe.

IRM Channel #12 Preventive W.R. #41768 ---

N/A N/A Installed tubing sleeve.

SRM #22 Preventive W.R. #41769 ---

N/A N/A Replaced extension cable and guard.

2-1402-17B Core Corrective W.R. #41827 ---

N/A N/A Installed pipe cap.

Spray PP CST Drain Valve FT-2-1461A Core Preventive W.R. #41907 ---

N/A N/A Inspected - no repairs.

Spray Flow Trans.

FT-2-1461B Core Preventive W.R. #41908 ---

N/A N/A Inspected - no repairs.

Spray Flow Trans.

PT-2-1460B Core Preventive W.R. #41910 ---

N/A N/A Inspected - no repairs.

Spray Pressure Trans.

LPCI Flow Trans. Preventive W.R. #41920 ---

N/A N/A Inspected - no repairs made.

FT-2-1542A

N DRESDEN UNIT 2-SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT- NATURE OF MAINTENANCE' NUMBER- CAUSE RESULT CORRECTIVE ACTION LPCI-Flow Trans. Preventive W.R.-#41921 ~ N/A N/A1 Checked and cleaned trans.

FT-2-1542B FT-2-1549B LPCI Preventive'W.R. #41923 N/A N/A Replaced bolts and cleaned trans.

Flow Trans.

2-1601, 33A-33B Corrective W.R. #42158 N/A N/A Replaced rubber' seat and cleaned.

"Torua to D/W Vacuum Breaker 2-1601, 33A-33B Corrective W.R. #42159 ---

N/A N/A Replaced seat and cleaned.

Torus to D/W Vacuum Breaker 2-1601-32C and D Corrective W.R. #42160 --

N/A N/A Replaced seats and 0-rings.

Torus D/W Vacuum Breakers Rod Select Timer Preventive W.R. #42293 N/A N/A Installed new timer.

LPRM 2A 16-33 Preventive W.R. #42340 N/A N/A Replaced light.

Hanger in HPCI Corrective W.R. #42359 N/A N/A Turned clamp and re-tightened.

Room 2-1705-8A Rx Preventive W.R. #42385 N/A N/A Cleaned contacts.

Bldg. Vent Rad Monitor CRD L5 Preventive W.R. #42399 N/A N/A Removed and replaced support steel, rings and drive.

.L 2-202-5 Preventive W.R. #42429 N/A_ N/A Installed and removed test rig.

2-2202-6 Rack Preventive W.R. #42430 ---

N/A N/A ' Installed and removed test rig. i

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 -

-4 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION U2 RPS Relays Preventive W.R. #42462 N/A N/A Restored relays.

590-112A,B,C,D Walds #8-2 and 3 Preventive W.R. #42538 ---

N/A N/A Welds ground.

ISI Condenser Class 2 756-101B Power Preventive W.R. #42561 ---

N/A N/A Rebuilt relay.

Range Monitor Relay 2-1501-3A Preventive W.R. #42567 N/A N/A Adjusted spring pack retainer nut.

FT-2-1551A LPCI Preventive W.R. d41924 N/A N/A Inspected - no repairs made.

Flow Trans.

FT-2-1551B LPCI Preventive W.R. #41925 N/A N/A Inspected - no repairs made.

Flow Trans.

LT-2-1641-5A Preventive W.R. #41926 N/A N/A Inspected - no repairs made.

Torus Level Trans.

PT-2-1625 D/W Preventive W.R. #41928 N/A N/A Inspected - no repairs made.

Pressure Trans.

Snubbers (2) Corrective W.R. #41948 N/A N/A Installed flat washers.

SRM Shorting Preventive W.R. #41977 N/A N/A Installed jumpers.

Links ATWS Rosemount Preventive W.R. #41983 ---

N/A N/A Replaced plugs.

Trans.

2-305-129 HCU Preventive W.R. #42024 ---

N/A N/A Replaced level selector.

14-15 High Water Alarm

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 -

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2-1507B-U2 MOV Preventive.W.R. #42071 ---

N/A N/A Inspected valve.

2-7505B MOV Preventive W.R. #42073 N/A N/A Inspected valve.

2-7504B U2 MOV Preventive W.R. #40275 N/A N/A Inspected valve.

Accumulator 14-51 Corrective W.R. #42082 N/A N/A Replaced accumulator.

U2 MOV 1501-21A Preventive W.R. #42084 N/A N/A Inspection performed.

U2 MOV 1402-38B Preventive W.R. #42085 ---

N/A N/A Inspection performed.

U2 MOV 1501-32A Preventive W.R. #42091 N/A N/A Inspection performed.

U2 MOV 1501-11A Preventive W.R. #42092 ---

N/A N/A Inspected - installed splices.

U2 MOV 1301-3 Preventive W.R. #42107 N/A N/A Inspection performed.

U2 MOV 1301-2 Preventive W.R. #42108 N/A N/A Inspection performed.

U2 MOV 1301-4 Preventive W.R. #42117 N/A N/A Inspected and installed splices.

U2 MOV 1001-1A Preventive W.R. #42120 N/A N/A Inspection performed.

D2 Turbine Gen. Preventive W.R. #35316 N/A N/A Overhauled generator.

2-5600-6000 2-202-7A Valve Preventive W.R. #28735 N/A N/A Cleaned stems and tightened flats.

1601-32 and 33A-F Preventive W.R. #30016 N/A N/A Replaced sealtite.

Pilot Sol for Preventive W.R. #34709 ---

N/A N/A Replaced solenoid valve.

A02-220-45

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Scra; Discharge Preventive W.R. #34913 N/A N/A Replaced solenoid.

Vol. Vents and Drain Air Sol.

2-0302-20B 2-2301 HPCI Preventive W.R. #35762 ---

N/A N/A Replacked and floated couplings.

Turbine 2-203-3B Electro- Preventive W.R. #35453 ---

N/A N/A Removed blind flange and installed.

matic Relief Valvn 2-MO-202-5A Preventive W.R. #35568 ---

N/A N/A Checked for grease and tightness.

Recire. PP Discharge Valve 2-220 Rx Preventive W.R. #36776 ---

N/A N/A Replaced hose.

Head Vents U2 ID MSIV Preventive W.R. #36917 ---

N/A N/A Replaced switches.

SRM Z1 Preventive W.R. #37015 ---

N/A N/A Checked and found no problems.LPRM 24-09A Preventive W.R. #37420 N/A N/A Completed DIS 700-21 and DIP 700-13.

(APRM 3)

Rx Head T/C's Preventive W.R. #37541 ---

N/A N/A Removed and installed T/C's.

HPCI Turbine Preventive W.R. #29237 N/A N/A Repaired control box cover - reinstalled 2-2302 conduit rebuilt valves.

305-117 Accumu- Preventive W.R. #32606 N/A N/A Rebuilt valves.

lator 26-07 Accumulator Preventive W.R. #32607 N/A N/A Rebuilt valves.

22-47, 305-117

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Ac*cumulator Preventive W.R. #32608 N/A N/A Rebuilt valves.

26-47, 305-117 CRD 34-39 Preventive W.R. #33749 ---

N/A N/A Rebuilt solenoids.

502-203-2A-0 Preventive W.R. #34730 ---

N/A N/A Replaced solenoids sealed conduit.

MSIV Solenoid Valves 502-203-1A-0 Preventive W.R. #34731 ---

N/A N/A Repaired cable and conduit.

MSIV Solenoid Valves U2 "B" ATWS Preventive W.R. #34837 N/A N/A Replaced inverter cooling fan.

Invertor Leak Test CRD's Preventive W.R. #35466 ---

N/A N/A Tested - found ok.

Auto Blowdown Preventive W.R. #36760 ---

N/A N/A Rebuilt relays.

System HFA (Slave 1-8)

Relays U2 HPCI MSL Preventive W.R. #37382 ---

N/A N/A Replaced indicator light limit switch.

Indo Light Main Steam Preventive W.R. #37677 ---

N/A N/A Replaced coils and adjusted relays.

Isolating Control 2-1601-20A Preventive W.R. #38342 ---

N/A N/A Tightened connection and put locktite on threads.

HPCI 2-2301 4 Preventive W.R. 38372 ---

N/A N/A Jumpers removed.

and 5 Valve Control Rod Corrective W.R. #38747 N/A N/A Removed and installed CRD's per Drives procedure.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 .

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Prissure Preventive W.R. #39090 ---

N/A N/A Tested - found no problem.

Sensors ECCS Relays Preventive W.R. #39092 N/A N/A Installed blocks and removed wires.LPRM 08-33B Preventive W.R. #39256 ---

N/A N/A No problems found.

Off-Gas Log Rad Preventive W.R. #40488 N/A Monitor 1733A N/A Replaced and calibrated log rad monitor.

A0-2-2599-3A Preventive W.R. #40532 ---

N/A N/A Tightened-up loose fittings.

250VDC Battery Corrective W.R. #40602 N/A Charger 2 N/A Adjusted float and equalized voltage.

Snubbers (12) Preventive W.R. $40655 N/A N/A Removed and replaced snubbers.

"F" Safety Valve Corrective W.R. #40758 ---

N/A N/A Replaced nipple.

2-203-F Snubbers (8) Preventive W.R. #40768 N/A N/A Replaced snubbers.

Snubbers (11) Corrective W.R. #40769 ---

N/A N/A Replaced snubbers.

Mechanical Corrective W.R. #40849 ---

N/A N/A Tested and replaced snubbers.

Snubbers (11)

RPS Relay EPA Preventive W.R. #40915 ---

N/A N/A Adjusted breaker.

2A-2 2-203-3B Preventive W.R. #41003 ---

N/A N/A Installed new sealtite, wires, lugs and Electromatic splices.

CUB. 2302 Bus Preventive W.R. #41179 N/A N/A 23-23-1 Tie Reconnected tie breaker.

Breaker

m DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - J UNE, 1985 -

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Dk'EDS Isolation Corrective W.R. #41239 N/A Valve A0-2-2001- N/A Replaced solenoid valve.

5 DLTDS Isolation Corrective W.R. #41287 ---

N/A Valve A0-2-2001- '

N/A Replaced solenoid valve.

5 and 6 2-1403-104B Corrective W.R. #41353 ---

N/A N/A Adjusted relay contacts.

Care Spray Relay 1430-106B Core Corrective W.R. #41354 ---

N/A N/A Adjusted relay contacts.

Spray HFA Relay U2 1502-18B Corrective W.R. #41388 MOV N/A N/A Pulled breaker per procedure.

A0 8501-1A Torue Preventive W.R. #41407 Sample Valve N/A N/A Tested - works correctly.

902-3 Refuel Grapple Corrective W.R. #41413 ---

N/A N/A Tested and replaced limits.

A0-2-9206A Corrective W.R. #41432 Valve N/A N/A Replaced solenoid valve.

A0-2-9206-B Corrective W.R. #41438 N/A N/A Replaced solenoid valve.

U2 MOV 1501-22A Preventive W.R. #41504 N/A N/A Repaired sealtite U2 A0V 2001-3 Preventive W.R. #41656 N/A N/A Changed grounded limit switch.

Core Spray Preventive W.R. #41909 N/A N/A Inspected per procedure.

Pressure Trans.

PT-2-1460A

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE- JUNE, 1985

  • LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION LS'2-2351A HPCI Preventive W.R. #41911 Level Switch N/A N/.\ Inspected switch.

LT-2-1641-5B Preventive W.R. #41927 Torus Level N/A N/A Inspected - no repairs made.

Trans.

PT-2-1641-6A Preventive W.R. #41929 D/W Pressure N/A N/A Replaced plug and inspected.

Trans.

PT-2-1641-6B D/W Preventive W.R. #41930 Pressure Trans.

N/A N/A Inspected and replaced plug.

PT-2-647A Rx Preventive W.R. #41932 Pressure Trans. N/A N/A Inspected - no repairs made.

PT-2-647B Rx Preventive W.R. #41933 Pressure Trans.

N/A N/A Inspected - no repairs made.

PT-2-662 Rx Preventive W.R. #41934 Pressure Trans.

N/A N/A Inspected per procedure.

2-1501-27B U2 Preventive W.R. #42097 MOV N/A N/A Performed E.Q. Inspection.

U2 MOV-220-2 Preventive W.R. #42109 N/A N/A Performed E.Q. inspection.

U2 MOV-1301-1 Preventive W.R. #42118 N/A N/A Installed hoses, switches and harness.

Reactor Manual Preventive W.R. #42252 Control Timer N/A N/A Lubricated and checked timing.

U2 5747 HPCI Preventive W.R. #42290 Room Cooler N/A N/A Replaced motor.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 -

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CRb EG Preventive W.R. #42351 ---

N/A N/A Installed drive and support steel.

D2 300 CRD L-4 Corrective W.R. #42381 ---

N/A N/A Installed drive and support steel.

Control Blade Preventive W.R. #42395 ---

N/A N/A Freed drive installed GE blade.

U2 ROD E-1 Preventive W.R. #42415 ---

N/A N/A Replaced pushbutton switch.

Select Push-button CRD J-6 Corrective W.R. #42428 N/A N/A Replaced CRD, support steel and drive.

RWCU Aux. PP Preventive W.R. #42464 N/A N/A Lifted leads.

U2 HPCI Root Corrective W.R. #42480 N/A Valve PSH 2355 N/A Repaired and replaced nipple.

1601-32E Torus Corrective W.R. #42622 N/A to D/W Vacuum N/A Removed arc strikes.

Breaker Piping 1601-33A Torus Corrective W.R. #42623 N/A to D/W Vacuum N/A Removed arc strikes.

Breaker Piping Snubbers (4) Preventive W.R. #42617 ---

N/A N/A Replaced 4 snubbers.

"A" Main Steam Line 2 "B" RPS MG Preventive W.R. #42625 N/A Set N/A Took over loads from spare breaker.

1601-20A Pratt Corrective W.R. #42635 N/A Vent Valve N/A Replaced one-half copper line.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 201601-32 and 12 Preventive W.R. #42636 N/A N/A Performed procedure.

Torus to D/W Vacuum Breakers 125VDC Battery Preventive W.R. #42688 N/A Charg:r 2 N/A Adjusted float and equalizer.

"A" Main Steam Preventive W.R. #42705 ---

N/A N/A Replaced clamp.

Line Support Clamp MOV 202-5A Corrective W.R. #42845 N/A N/A Installed grease relief.

MOV 2-202-5B Corrective W.R. #42846 ---

N/A N/A Installed grease relief.

MOV 1301-1 Preventive W.R. #42847 ---

N/A N/A Installed grease relief.

MOV 1301-4 Preventive W.R. #42848 ---

N/A N/A Installed grease relief.

MOV 2-1001-1A Corrective W.R. #42849 N/A N/A Installed grease relief.

MOV 1001-1B Corrective W.R. #42850 ---

N/A N/A Installed grease relief.

2-203-3D "D" Corrective W.R. #42915 ---

N/A N/A Assembled coupling.

Electromatic U2 Diesel Gen. Preventive W.R. #42918 N/A N/A Inserted new blocking.

2-2302 HPCI Corrective W.R. #42921 N/A N/A Installed gasket and sealtite.

Booster Pump 2-1501-3B Preventive W.R. #42971 N/A N/A Adjusted spring pack.

MO 2-1201-3 Corrective W.R. #42980 N/A Valve N/A Replaced shaft and 3 gaskets.

I DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1985

  • LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2-220-63A Valve Preventive W.R. #42995 N/A N/A Adjusted packing.

2-202-7B Valve Preventive W.R. #42996 ---

N/A N/A Adjusted packing.

M0 2-1001-5B Preventive W.R. #43008 ---

N/A N/A Adjusted packing.

MO 2-1501-22B Preventive W.R. #43009 '

N/A N/A Adjusted packing.

MO 2-1501-22A Preventive W.R. #43010 ---

N/A N/A Adjusted packing.

MO 2-1001-5A Preventive W.R. #43011 ---

N/A N/A Adjusted packing.

Valva 2-1301-505 Preventive W.R. #43012 ---

N/A N/A Adjusted packing.

MO 2-1301-2 Preventive W.R. #43013 ---

N/A N/A Adjusted packing.

A0-2-220-44 Preventive W.R. #43014 Valva N/A N/A Adjusted packing.

MO 2-2301-4 Corrective W.R. #43015 Valve N/A N/A Adjusted packing.

2-202-5A Valve Preventive W.R. #43017 ---

N/A N/A Adjusted packing.

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - JUNE, 1985 -

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

  1. 3' Diesel Preventive W.R. #40262 N/A N/A Inspection performed.

Generator LPRM IC-16-49 Preventive W.R. #41231 N/A N/A Investigated - found no problem.

LPRM 32-25-D Preventive W.R. #41249 N/A N/A Inspected - no problem.

(GR-ll)LPRM 48-41C Preventive W.R. #41250 N/A N/A Inspected - all looks ok.

MM f 6 'LPRM 16-49B Preventive W.R. #41252 ---

N/A N/A Inspected - found no problem.

LPRM 3B40-41 Preventive W.R. #41271 N/A N/A Inspected - all ok.

APRM 2 LPRM 5A40-25 Preventive W.R. #41272 N/A N/A Inspected - all ok.

APRM 3 LPRM 6A40-09 Preventive W.R. #41273 ---

N/A N/A Inspected - all ok.

APRM 1 CRD 38-23 Corrective W.R. #41316 N/A N/A Tightened packing follower.

3-261-30A-D MSL Preventive W.R. #41318 N/A Low Pressure N/A Checked calibration.

Switch SRM #22 Preventive W.R. #41320 N/A N/A Cleared and tightened ground connec-tion.

IRM #12 Preventive W.R. #41330 N/A N/A Found no problem.

PS-3261-30A-D Preventive W.R. #41339 N/A Main Steam Line N/A Installed new switch.

Low Pressure

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE JUNE, 1985 .

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION .

3-0305-126 CRD Corrective W.R. #41368 N/A N/A Adjusted stem coupling.

E-9 Scram Inlet Valva RM3-750-1C Preventive W.R. #41399 N/A N/A Exercized discriminator pot.

SRM #22 Torus Level Preventive W.R. #41592 N/A N/A Alarm Re-calibrated torus level instru-ments.

D3 HPCI A/C Preventive W.R. #41714 N/A Cooling Water PP N/A Tightened packing gland.

LPRM ID 16-49 Preventive W.R. #41759 N/A N/A Tested - looks good.

LPRM 4B 40-33 Preventive W.R. #41760 N/A N/A Tested - looks good.

LPRM 4D 40-33 Preventive W.R. #41785 N/A N/A Tested - looks good.

LPRM 3A 48-33 Preventive W.R. #41786 GRI N/A N/A Checked - found no problem.

C-RPS Yarway Preventive W.R. #41787 N/A N/A Tested - found no problem.

LPRM 6C 40-09 Preventive W.R. #41826 ---

N/A N/A Tested - looks good.

3-2304-14C D3 Corrective W.R. #41848 ---

N/A N/A Re-installed and tightened nut.

HPCI Pipe Restraint LPRM 6D 32-09 Preventive W.R. #41890 ---

N/A N/A Tested - found no problem.

ATWS Rosemount Preventive W.R. #41981 N/A N/A Installed stainless steel plugs.

Trans.

i SRM #22 Preventive W.R. #41995 N/A N/A Checked - looks good.

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - JUNE, 1985 LER OR OUTAGE MALFUNCTION EQUIPMELT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Accumulator Corrective W.R. #42194 14-43 N/A N/A Changed accumulator.

RBM #8 Preventive W.R. #42302 ---

N/A N/A Replaced I.C. G4 and Ql.

RBM #8 Preventive W.R. #42314 ---

N/A N/A Re-set setpoint.

Rod Block Moni- Preventive W.R. #42404 N/A N/A tor #7 Performed DIS 700-8 Rev. 9.

LPRM Meter on Preventive W.R. #42405 903-5 Panel for N/A N/A Replaced relay card.16-17C D/W Equipment Preventive W.R. #42581 Hatch N/A N/A Closed hatch.

D/U Equipment Preventive W.R. #42582 Hatch N/A N/A Removed hatch.

APRM #4 Preventive W.R. #42616 N/A N/A Replaced relay.

3C CCSW Pump Preventive W.R. #42670 ---

N/A N/A Replaced FT-3-1542B.

3-1501-44C CCSW Preventive W.R. #42685 Pump N/A N/A Overhauled pump.

APRM/RBM Flow Preventive W.R. #42739 Converters N/A N/A Calibrated flow converters.

LPRM 2B 24-41 Preventive W.R. #42782 ---

N/A N/A Tested - looks good.

LPRM 6C 32-09 Preventive W.R. #42793 ---

N/A N/A Tested - looks good.

LPRM 3D 32-33 Preventive W.R. #42794 N/A N/A Tested - looks good.

N .

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7 DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - JUNE, 1985 -

LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 3-2301-7 HPCI Corrective W.R. #42818 N/A N/A Added 4 rings of packing.

Injection Test-able Check Valve LPRM 08-25D Preventive W.R. #40000

^

N/A N/A Checked and found ok.LPRM 40-41C Preventive W.R. #40469 N/A N/A Tested and checked - all looks good.

Ck. 3 LPRM 16-33D Preventive W.R. #40938 N/A N/A Disc. and tested - all ok.

PS-3-505C EHC Preventive W.R. #42001 N/A N/A Tested - looks good.

Low Pressure Switch LPRM 16-49-D Preventive W.R. #42621 N/A N/A Changed connecter on plant side cable.

Channel #1 LPRM 3C 48-41 Preventive W.R. #43048 N/A N/A Tested - found no problem.

LPRM IC 16-49 Preventive W.R. #43049 N/A N/A Burned off wisker tested - no problem.

LPRM 4D 32-25 Preventive W.R. #43080 N/A N/A Burned off wisker tested - no problem.

LPRM IB 32-49 Preventive W.R. #43081 N/A N/A Tested - all ok.

3B-1503 LPCI/ Corrective W.R. #43100 ---

N/A N/A Replaced top and bottom cover gasket.

CCSW Heat Exchanger 3B-1503 LPCI/ Corrective W.R. #43108 N/A N/A Jacked plate back to original position.

CCSW Heat Exchanger 1501-44C Cont. Preventive W.R. #43147 N/A Cooling Service N/A Inspected - all ok.

Water PP.

t DRESDEN UNIT 3 ~

SAFETY RELATED MAINTENANCE - JUNE, 1985

  • LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION LPRM 3B 32-33 Preventive N.R. #43189 N/A N/A Tested - all ok.

M312/VH-17 Preventive W.R. #43246 Spring Hanger N/A N/A Burnt-off wisker - all ok.

LPRM SC 40-25

DRESDEN UNIT 2/3 SAFETY RELATED MAINTENANCE - JUNE, 1985

  • LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" SBGT Logic Preventive W.R. #36722 N/A N/A Replaced coil and adjusted relay.

(Slave 1-11) 2-203-3B Corrective W.R. #35444 N/A Electromatic N/A Reconditioned valve.

R311=f Valve Standby Diesel Corrective W.R. #41994 N/A N/A Rebuilt air start motor.

Engine Air Start Motor 2/3-7503B Preventive W.R. #42175 N/A N/A Inspected heater.

Electric Heaters Standby Gas Preventive W.R. #43309 ---

N/A N/A Everything ok.

Crosstie Damper SDV Level Preventive W.R. #43470 N/A N/A Replaced heater and sensor assembly.

Switches 2/3 Diesel Preventive W.R. #44175 --

N/A N/A Inspection performed.

Gdnerator

fl .

SUMMARY

OF OPERATING EXPERIENCE

. UNIT TWO JUNE, 1985

'06-01'to 06-14 Unit 2 entered the month operating at a power level of 765 MWe and operated until 1105 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.204525e-4 months <br /> of June 9th, when the unit was manually taken off-line because of 2B MG Set problems. At 1332 hours0.0154 days <br />0.37 hours <br />0.0022 weeks <br />5.06826e-4 months <br /> the Rx automatically scrammed because of Mode switch problems. While the unit was off- -

line, the main steam line' snubbers were inspected. The Rx was made critical at 0450 of June 13th, and the unit was placed on-line at 1035 hours0.012 days <br />0.288 hours <br />0.00171 weeks <br />3.938175e-4 months <br /> of June 14th.

06-14 to 06-21 The unit operated continuously, reaching a power level of 776 MWe..until 2113 hours0.0245 days <br />0.587 hours <br />0.00349 weeks <br />8.039965e-4 months <br /> of June 18th, when the unit was manually taken off-line because of EHC problems. On June 19th, at 0233 hours0.0027 days <br />0.0647 hours <br />3.852513e-4 weeks <br />8.86565e-5 months <br />, the Rx automatically scrammed because of high level in the SDV. The Rx was made critical on-June 20th at 1928 hours0.0223 days <br />0.536 hours <br />0.00319 weeks <br />7.33604e-4 months <br /> and the unit was placed in ser-vice at 0545 hours0.00631 days <br />0.151 hours <br />9.011243e-4 weeks <br />2.073725e-4 months <br /> of June 21st.

06-21 to 06-30 The unit operated continuously the remainder of the month, reaching a power level of 680 MWe with a capacity factor of 59.57% and an availability of 75.55%.

SUMMARY

OF OPERATING EXPERIENCE UNIT THREE JUNE, 1985 06-01 to 06-30 Unit 3 operated continuously the entire month of June,

-1985 (with normal power reductions for weekend surveil-lances) reaching a power level of 803 MWe with a capacity factor of 89.21% and an availability of 100%.

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Commonwealth Edison I --

R.R. #1

\ . > ) Dresden Nucle r Power St: tion Morris, Illinois 60450 Telephone 815/942-2920 July 1, 1985 DJS LTR: 85-721 Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555

Attention
Document Control Desk

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.

i Sincerely,

} s

.fD.J. Scott 4

Station Manager Dresden Nuclear Power Station i

DJS:DCM:hjb

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

. 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 A.E.

On-Site NRC Inspector Sta. Nuc. Eng. Dept.

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

'Ii

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