ML20073E433

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Monthly Operating Repts for Mar 1983
ML20073E433
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 04/04/1983
From: Schroeder B
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20073E421 List:
References
NUDOCS 8304150138
Download: ML20073E433 (22)
v • d • e


Text

. _ _ _ _ _ _ _ _ _ _ _ _ _

OPERATING DATA REPORT DOCKET NO. 050-237

. DATE April 4, 1983 COMPLETED BY B. A. Schrceder TELEPHONE (815) 942-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden II
2. Reporting Period: March, 1983 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 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 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 744 2160 112920
12. Number of Hours Reactor Was Critical 0 168.33 87027.18 13 Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 0 168.13 82988.37 15 Unit Rese.rve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 0 227,620 165,709,129 17 Gross Electrical Energy Generated (MWH) 0 69769 52,958,035
18. Net Electrical Energy Generated.(MWH) -2,903 56.766 50,053,956 19 Unit Service Factor 0 7.78 73.49
20. Unit Availability Factor 0 7.78 73.49
21. Unit Capacity Factor (Using MDC Net) 0 3.4 57.42 l
22. Unit Capacity Factor (Using DER Net) 0 3.3 55.83 23 Unit Forced Outage Rate 0 0 11.64
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: 4/11/83 8304150138 830404 PDR ADOCK 05000237 R PDR l

l

l OPERATING DATA REPORT l

j DOCKET NO. 050-249 l

l i DATE April 4, 1983 a COMPLETED BY B. A. Schroeder '

1 TELEPHONE mun gg 79h i 1 OPERATING STATUS j NOTES l 1. Unit Name: Dresden III l 2. Reporting Period: March, 1983 3 Licensed Thermal Power (MWt): 2.527 i 4. Nameplate Rating (Gross MWe): 828 i 5 Design Electrical Rating (Net MWe): 794 j 6. Maximum Dependable Capacity (Gross MWe): 812 i 7. Maximum Dependable Capacity (Net MWe): 773 i 8. If Changes Occur in Capacity Ratings (Items 3 Through 7) Since Last Report, Give l Reasons:

1 N/A l 4

1 9 Power Level to Which Restricted, If Any (Net MWe): N/A j 10. Reasons For Restrictions, if Any: N/A

?

This Month Yr-to-Date Cumulative.

I

11. Hours in Reporting Period 744 2160 102,505
12. Number of Hours Reactor Was Critical 701.82 1364.77 77 no7.a7 1 13 Reactor Reserve Shutdown Hours 0 0 o j 14. Hours Generator On-Line 692.52 2094.75 75.552.72

} 15 Unit Reserve Shutdown Hours 0 0 0 j 16. Gross Thermal Energy Generated (MWH) 1.597,185 4.895.56 L 151.161.295 17 Gross Electrical Energy Generated (MWH) 516,080 1.603.013 50.255.077

) 18. Net Electrical Energy Generated.(MWH) 492,387 1.532.237 46.614,882 1

! 19 Unit Service Factor 93.08 96.78 73.71 1 j

, 20. Unit Availability Factor 93.08 96.78 73.71

21. Unit Capacity Factor (Using MOC Net) 85.62 91.77 58.83 l 22. Unit Capacity Factor (Using DER Net) 83.35 89.34 57.27 i
23 Unit Forced Outage Rate 6.92 3.02 13.21 1
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: N/A i

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DOCKET NO. 050-237 UNIT NAME Dresden II UNIT SHUTDOWNS AND POWER REDUCTIONS DATE 4-4-83 COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920 REPORT MONTH MARCH, 1983 6

METHOD OF LICENSEE CAUSE & CORRECTIVE NO. DATE TYPEI DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO

. (HOURS) DOWN REACTOR 3 REPORT # CODE 4 CODES PREVENT RECURRENCE i

1 83-1-8 S 744 C 3 -- -- --

Refueling and Turbine overhaul outage.

i 1 2 3 4 l F: Forced Reason: Method: Exhibit G-Instructions for l S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data i

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

~

, E-Operator Training & License Examination

F-Administrative G-Operational Error .

H-Other (Explain)

DOCKET NO. 050-249 UNIT NAME Dresden III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE 4-4-83 COMPLETED BY B. A. Schroeder.

TELEPHONE (815) 942-2920 REPORT MONTH MARCH, 1983 METHOD OF LICENSEE CAUSE & CORRECTIVE NO. DATE TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT # CODE 4 CODE 5 PREVENT RECURRENCE 2 83-3-4 F 51.5 H I -- -- --

Due to snubber failures on Unit 2 Steam lines, Unit 3 was shutdown to determine if same problems exist. No problems identified.

i 4

i 1

l 1 2 3 4 I

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

E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Explain)

_s i AVERAGE DAILY UNIT POWER LEVEL .

! ./  !

3 I DOCKET NO. 050-237

) i i i

UNIT II 1 .

i . j j DATE A Pril 4, 1983

^

COMPLETED BY B. A. Schroeder 1

TELEPHONE (815) 942-2920 i

! MONTH March. 1983 , ,

i i DAY '

AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL

! (HWe-Net) (MWe-Net) 1 0 17 o 2 0 18 0 i .,_ _

0 0

$ 3 19 1

4 0 20 0 1

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0 21 0 i.t'w l -

5 .

6 0 22 0 l

4 0

f' 7 , 23 0

0 8- 0 24 t

s 0 25 0 9 .

o' 0

! 10 26 4

)) O 27 0 i -

0 28 0 12 0

i . 13 29 0 t

14 0 30 ,

0 15' 0 -

31 0 16 0

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j AVERAGE DAILY UtilT POWER LEVEL ,

DOCKET NO. 050-249 1

i I

.i  ! UlliT III ,

l i i' DATE April 4, 1983

i COMPLETED BY B. A. Schroeder ,

i 4

j TELEPHONE (815) 942-2920

'I i

N HONTH March, 1983 .

I '\ DAY AVERAGE DAILY POWER LEVEL D5Y\ AVERAGE DAILY POWER LEVEL I

Ns N (HWe-Net) (HWe-Net)

I 797' 17 668

~

2 804 18 669 l 3 776 19 658

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i ,. 4 462 20 17 L.

5 0 21 777 4

37 22 761 l '~ 6 l'

1 7

489 23 79I i 8- 642 24 788 k 662 25 789 9

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10 669 26 794' 669 11 27 708

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12 668 28 784 667

, -13 29 776

'f I 666 14 30 ,

785 5

j 15- .

31 786 16 667 _ . _

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DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE FUNGION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 480V Breaker Preventive W.R. #203B9 N/A N/A Completed inspection.

at Bus 48 for MCC28-1 480V Breaker at Preventive W.R. #20391 ---

N/A N/A Completed inspection.

Bus 28 for MCC28-3 480V Breaker Preventive W.R. #20393 ---

N/A N/A Completed inspection.

at-Bus 28 for Bus Tie 28-29 ,

480V Breaker Preventive W.R. #20394 ---

N/A N/A Completed inspection.

Bus Mainfeed Bus 29 480V Breaker Preventive W.R. #20395 ---

N/A N/A Completed inspection, at Bus 29 Bus Tie 29-28 480V Breaker Preventive W.R. #20398 ---

N/A N/A Completed inspection, at Bus 29 for MCC29-3 D2 Seal Purge Preventive W.R. #21834 ---

N/A N/A Removed valve - tested valve (lifted at Relay Valve 1255). Valve lifted within Specs.

2-203-B Elec- Preventive W.R. #23064 ---

N/A N/A Work performed in drywell Unit 2. Welded tromatic Relief reducer to 3/8 pipe per procedure.

HPCI Check Preventive W.R. #23100' ---

N/A N/A Disassembled valve for inspection and Valve , reassembled using old gasket.

DRESDEN UNIT 2

  • f SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION X-Area Temp. Preventive W.R. #254'39 ---

N/A N/A Calibrated and installed.new Temp. SW.

SW's 261-16A and 261-16D Icolation Preventive W.R. #25653 ---

N/A N/A Put valve motor operator into manual and Condanger opened valve with manual hand wheel.

1301-3 '

250V Battery Preventive W.R. #25313 ---

N/A N/A Checked voltage - 262.0 volts. OK.

125V Battery Preventive W.R. #25312 ---

N/A N/A Checked voltage - 13QD volts. Raised'

, float voltage .5 volts to 130.5 - OK.

  1. 3 Diesel Preventive W.R. #25942 ---

N/A N/A Performed quarterly inspection per G:nerator DMP 6600-6 for E.M.D.

Unit 3 Diesel Preventive W.R. #25829 ---

N/A N/A Replaced 9 filters.

APRM Chi LPRM Preventive W.R. #25179 ---

N/A N/A Completed DIP 700-15&l3. Found LPRM 40-41 A stable and reading good.

'LPRM 48-17D Preventive W.R. #24795 ---

N/A N/A LPRM gain adjusted. Is now reading in APRM Chi Spec. Completed DIP 700-13&l5.

Unit 3 CRD 4-14 Preventive W.R. #25986 N/A N/A Adjusted stem (bottom) one thread down (30-55) for more pressure on seat.

Unit 3 Flow Preventive W.R. #25395 N/A N/A Recalibrated RBM #8 flow convertor.

Converters Looks good.

Acoustic Moni- : Preventive W.R. #25605 ---

N/A N/A Recalibrated the threshold voltage on tor 4G and 4H Acoustic monitor 4G and 4H.

Electromatic & Preventive W.R. # 12021 ---

U/A N/A Firestop material and vermasco. Discon-Torus Test nected all cables.

2-

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 Isola- Preventive W.R. #23138 ---

N/A N/A Repacked valve using Grafoil packing.

tion Condenser Test Connection 2-1301-1-606

'. Unit 2 Fuel Preventive W.R. #23286 ---

N/A N/A Installed new gaskets on the outer fuel Pool Gates pool as requested.

APRM/RBM Trip Preventive W.R. #23292 ---

N/A N/A Installed new pushbuttons.

L: vel Push-buttons HPCI Room Preventive W.R. #23606 ---

N/A N/A Removed both covers, cleaned cooler and Cooler tested cooler for leaks.- found no leaks.

Replaced covers.

D2 Isolation Preventive W.R. #24346 ---

N/A N/A Welded in valve.

Condenser Sample Valve Refuel Grapple Preventive W.R. #24502 ---

N/A N/A Installed Temp. 480V feed. Removed track switches and entered in Jumper Log 1-10-83.

Back to normal 2-5-83.

Raactor Manual Preventive W.R. #246108 ---

N/A N/A Replaced switches.

Control Isolation Preventive W.R. #24641 ---

N/A N/A Removed glasses and cleaned. Reinstalled Condenser Vent glasses. Inspected gasket (rubber) -

& Drain Line found OK.

Sight Glass ,

  1. 2 Diecel Preventive W.R. #24675 ---

3/A N/A Quarterly, semiannual and yearly inspec-

Gen 2rator tions done on #2 diesel generator.

(c,a J

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF MAI, FUNCTION LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION D2 Low Fluid Preventive W.R. #249d4 ---

N/A N/A Filled snubber reservoirs.on 2,3,4,5,7,8, on Torus Base- 9,12,13,15 and 16. Replaced zerk fittings ment Snubber on 3, 7 and 8.

-Icolation Preventive W.R. #24972 --

N/A N/A Inspected gasket - surface OK. Reinstalled Condenser Man- cover.

way Hatch 250V Battery Preventive W.R. #25049 ---

N/A N/A Cleaned five batteries, greased and torqued.

Torus Drain Preventive W.R. #25086 ---

N/A N/A ' Removed bonnet top of valve. Installed new Valve . 1,acking and moly-coat threads on stem.

Isolation Preventive W.R. #25171 N/A N/A Removed cover. Stored wood.

Condenser 2-2099-323 Preventive W.R. #25176 ---

N/A N/A Installed new packing (Grafoil) (3) with HD Spray Drain moly G on stem (threads).

Valva A & B LPCI Preventive W.R. #25194 ---

N/A N/A Ground welds 16-11 and 16-14 for ISI in Loopwelds order to perform a UT.

Inboard "A" Preventive W.R. #25246 ---

N/A N/A Installed new seat ring assembly.

Fcedwater Chk.

Unit 2 Diesel Preventive W.R. #25293 ---

N/A N/A Removed heads and cleaned tubes. Replaced Generator heads.

Unit 2C Safety Preventive W.R. #25475 ---

N/A N/A Replaced rupture disk in valve with new Valve -

8" rupture disc Stores #580A30.

Unit 2 Fuel Preventive W.R. #25495 ---

N/A N/A Replaced spring - spring bent and going Grapple past stop. Operates OK.

..h e' ' -+a *8- - -f

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 -

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 Diesel Preventive W.R. #258'97 ---

N/A N/A Replaced 2 air motors. Cleaned air line Generator lubricator and refilled with 20W oil.

LLRT Valve Preventive W.R. #25703 ---

N/A N/A Tightened down on packing and also lubed 2-1299-006 stem with moly G.

Unit 2 Target Preventive W.R. #24516 ---

N/A N/A Took valve #159 apart. Reset pilot to Rock Pilot 1135 psi as requested.

Valve LPCI M02-1501- Preventive W.R. #25913 -- . N/A N/A Got valve off of seat. Exercised con-SC tactor. Cycled 3 times.

Unit 2 Inter- Preventive W.R. #25895 ---

N/A N/A Adjusted door closure.

lock Door D2 Low Fluid Preventive W.R. #24905 ---

N/A N/A Used zerk to fill snubber ONLY. Removed Isolation zerk and put back original plug.

Condenser Pipeway Wide Range Preventive W.R. #24183 ---

N/A N/A Removed and tested flow. OK.

Level Xmitter Instr. Check Valve R circ. PP Preventive W.R. #24185 ---

N/A N/A Removed and tested flow check. Flow check Stal Instr. tested within Specs.

Chtck Valve R:cire. PP PreventiveW.R.#2418f ---

N/A N/A Tested flow check. Flow check tested within Seal Instr. , Specs.

Check Valve

, s

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 24/48 Bottom Preventive W.R. #25742 ---

N/A N/A Adjusted voltage to proper. setting.

West Battery Charger 2A-125V Preventive W.R. #25778 ---

N/A N/A Adjusted voltage to proper setting.

Battery Charger 2A 250V DC Preventive W.R. #25744 ---

N/A N/A Made float voltage adjustment. Adjusted B:ttery .and checked AMP from charger. Checked Charger out OK.

Refuel Grapple Preventive W.R. #25440 --

N/A N/A Replaced spring in switch.

125V Batteries Preventive W.R. #23622 ---

N/A N/A Readings are within Spec. using temp.

conversion chart at 770F. SG would be 121b.

Rafuel Plat- Preventive W.R. #25335 ---

N/A N/A Replaced rate card and repaired coupling form on tack.

Unit 2 Grapple Preventive W.R. #23879 ---

N/A N/A Replaced control cable and cable rollers.

2-220-5 & 6 Preventive W.R. #21596 ---

N/A N/A Repacked with Grafoil packing and lubed stem and packing with N500.

480 Volt Preventive W.R. #20390 ---

N/A N/A Completed inspection.

Br:aker at Bus 28 for MCC 28-2 480 Volt Preventive W.R. #20392 ---

N/A N/A Completed inspection.

Breaker at Bus 28 - Main i Feed Bus 28 4'

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE E FUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 480 Volt Preventive W.R. #20396 ---

N/A N/A Completed inspection.

Breaker at Bus 29 For MCC 29-7 480 Volt Preventive W.R. #20397 ---

N/A N/A Overhauled per DMP 7300-4.

Breaker at Bus 29 for MCC 29-2 l 480 Volt Preventive W.R. #20399 ---

N/A N/A Completed inspection.

Breaker Bus 29 for MCC's 29-l 4

and 29-4 Unit 2 Rx Mode Preventive W.R. #20713 N/A N/A Installed new mode switch with update.

Switch -

HPCI Draw Pot Preventive W.R. #21814 ---

N/A N/A Found trap plugged - cleaned trap and Trap rebuilt. Installed trap back in line.

D-2 SBLC Preventive W.R. #21844 ---

N/A N/A After test fire - old valves removed and replaced with new valves and parts.

-D-2 CRD Support Preventive W.R. #21899 ---

N/A N/A Removed steel 1-15-83. Installed steel Steal 2-26-83.

Unit 2 HPCI Preventive W.R. #22008 ---

N/A N/A Relocated seal and tightened to float.

Sump Pump' Unit 2 DC Preventive W.R. #22021 N/A N/A Inspection completed.

Motors Unit 2 24/48V Preventive W.R. #22022 ---

N/A N/A Completed battery discharge test per Bitteries S.P. 83-1-4. Back to normal service at this time.

} DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 125V Preventive W.R. #22023 ---

N/A N/A Completed 125V battery discharge test Bitteries per S.P. 83-1-2. Battery now back to normal service.

Unit 2 250V Preventive W.R. #22024 ---

N/A N/A Disconnected batteries. Tested batteries, B;tteries '

reconnected and returned to service.

Unit 2 HFA Preventive W.R. #22025 ---

N/A N/A Cleaned and inspected all Unit 2 HFA R71ryn relays per DMP 500-2, Rev. 2.

R: circ. PP Preventive W.R. #24186 ---

N/A N/A Removed and tested flow check. Flow Sr:a1 Instr. check tested within Specs.

Ch:ck Valve L12-263-101, Preventive W.R. #24632 ---

N/A N/A Calibrated LT2-263-61 and LT 2-263-101-LI LT2-263-61 2-263-112.

2A LPCI Heat Preventive W.R. #24650 ---

N/A N/A Replaced heads and piping.

Exchanger IRM #12 Preventive W.R. #24760 ---

N/A N/A Performed DIS 700-4 for IRM # 12 only.

Unit 2 Reactor Preventive W.R. #25024 ---

N/A N/A Jumpers removed - Jumper Log cleared.

Scrams RPS Rolays Preventive W.R. #25215 ---

N/A N/A Jumpers removed - Jumper Log cleared.

590ll2-A,B,C,D Rod Permissive Preventive W.R. #25228 ---

N/A N/A Jumpers removed - Jumper Log cleared.

R31ay Accum. 58-23 Preventive W.R. #25428 ---

N/A N/A Took valve apart and found lower seat to 104 V:1ve be wedged under disc. Managed to force back down. Valve will now close.

7

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION HPCI Main PP Preventive W.R. #25115 ---

N/A N/A Replaced 2 nuts and adjusted packing.

Drrin Valve S2f:ty-Related Preventive W.R. #25477 ---

N/A N/A Inspected breaker settings per package.

Motor Operated Velves HPCI Room Preventive W.R. #25511 ---

N/A N/A Completed rerouting of conduit for Coolar contractor's work in Unit 2 HPCI Room.

Turbin3 Ex- Preventive W.R. #25541 ---

N/A N/A Corrected wiring error as per 12E2789A.

change Press. Tested switch and relay operation as per Switch DIS 2300-9.

Solenoid Wall Preventive W.R. #25555 ---

N/A N/A Screws were too long, bottoming out.

Bracket Put washers under screws and bracket tightened-up securely.

D2 D/G Low Preventive W.R. #25600 ---

N/A N/A Bench calibrated new switch and installed.

Cooling H 2O Functionally tested for proper operation.

Pr:ss. S.W. ,

ATWS Relay Preventive W.R. #25680 ---

N/A N/A Cleaned relay contacts with burnishing K105A tool.

ATWS Rtlay Preventive W.R. #25681 ---

N/A N/A Cleaned contacts.

K105B 24/48 Bottom Preventive W.R.'#25741 N/A N/A Adjusted valve to proper setting.

Erst Brttery Chnrger .

2A 125V Battery Preventive W.R. #25774 ---

N/A N/A Replaced control board and adjusted.

Chrrger i

r-DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 .

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 A0 2301- Preventive W.R. #25846 ---

N/A N/A Could not find problem or any leaking.

31 Rod Movement Preventive W.R. #25880 ---

N/A N/A Adjusted control switch stop screw.

C.S. Operates OK.

Accumulator Preventive W.R. #25855 ---

N/A N/A Removed valve, rebuilt and reinstalled.

  1. 30-15 (H-4 )

Snubber Sup- Preventive W.R. #25924 ---

N/A N/A PT of attachment weld, porting Attach-ment Snubb:r Preventive W.R. #25925 ---

N/A N/A Replaced cotter pin as requested.

2A-5606-53 24/48/ Batter Preventive W.R. #25930 ---

N/A N/A All panel meters agree with fluke readiness.

Bottom and Bot-tom B Charger and at B Top Chrrgers

'#2 125V Battery Preventive W.R. #25931 ---

N/A N/A Float voltage 130.3, equalize voltage 135.3.

Charger 125V Battery Preventive W.R. #25941 ---

N/A N/A Using calibrated fluke, meassured 131 volts Cherger #2 at battery charger. Panel meter read 131.

29-7 Fred Preventive W.R. #25977 N/A N/A Installed a jumper on Bus 28, back compart-Braaker ment T.B. B-Y 11 & 12, 24/48 Volt Preventive W.R. #26013 ---

N/A N/A Performed test and replaced bad cells.

IBittery I.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENA"CE NUMBER CAUSE RESULT CORRECTIVE ACTION HCU J-10 Preventive W.R. #26020 ---

N/A N/A Replaced bonnet bolt as requested.

(34-39)

CRD H-2 Preventive W.R. #26035 ---

N/A N/A Replaced solenoid.

(30-07)

Rnfuel Grapple Preventive W.R. #26508 ---

N/A N/A Replaced track switch and adjusted limits.

On SBLC Pipe Preventive W.R. #26079 ---

N/A N/A Removed union nut, cleaned threads and Union After tightened union.

Flow Gauge IRM #13 Drive Preventive W.R. #26108 ---

N/A N/A Opened detector drive tube. Bottom cylinder Mount ,

has about 4-6 oz, of water in it. dripping out bottom bearing-bushing. Seal looks good. Water not coming from Reactor.

CRD B-12 Rod Preventive W.R. #26179 ---

N/A N/A Replaced B-12 rod select switch. Paper Select Switch work to follow per QA and QC.

GR 2 & 3 Scram Preventive W.R. #26184 ---

N/A N/A Adjusted 590-122B time delay relay to R::et Time 12 seconds.

Delay Relay

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DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - MARCH, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 3 Torus to Preventive W.R. #25896 ---

N/A N/A Replaced Solenoid.

Rx Bldg. Relief Velve Refu21 Grapple Preventive W.R. #25613 ---

N/A N/A Replaced sationary and movable contacts.

3C Main Steam Preventive W.R. #25389 ---

N/A N/A Recalibrated switch indicator.

Line Flow Disp.

Michr.nical Preventive W.R. #24706 ---

N/A N/A Disconnected and. tested as requested.

Snubb:rs Unit 3 CRD J-15 Preventive W.R. #25380 ---

N/A N/A Adjusted valve stem 1/8" longer.

(34-59)

LPRM 16-14-B Preventive W.R. #24751 ---

N/A N/A Completed DIP 700-13 and 700-15 LPRM and APRM CH5 electronic. Looks good.LPRM 16-49C Preventive W.R. #24693 ---

N/A N/A Completed DIP 700-13 and 700-15.

(GPI)LPRM 32-57B Preventive W.R. #25038 ---

N/A N/A Completed DIP 700-13 & 15. Found LPRM 32-57B steady.

Unit 3 SBLC Preventive W.R. #25517 ---

N/A N/A Settings were set too low on suction and H rt Trace discharge line thermostats.

Unit 3 LPCI Preventive W.R. #25775 ---

N/A N/A Replaced aux. contact on closing con-

"D" Pump Suc- -

tactor with like for like replacement.

tion 3-1501-5D Unit 3 DG Preventive W.R. #25743 ---

N/A N/A Replaced 2 ea. air start motors reg.

valve and 9 filters in North bank.

Unit 3 Torus Preventive W.R. #25776 ---

N/A N/A Cleaned contacts on torque switch.

Spray Valve Replaced intermittent aux, contact with 3-1501-18A like for like replacement.

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - MARCH, 1983 -

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Drywell Pres- Preventive W.R. #25037 ---

N/A N/A Found power supply on system bad, sure Controller Replaced.

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DRESDEN UNIT 2/3 SAFETY RELATED MAINTENANCE - MARCH, 1983 .

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Spire Diesel / Preventive L'.R. #25964 ---

N/A N/A Rebuilt per instruction - 4 air start Air Start Motor motors.

GE Power Supply Preventive W.R. #24461 ---

N/A N/A Performed calibration on power supply j;20VDC and adjusted the R4's for j; 20VDC.

Diesel Air Preventive W.R. #25749 ---

N/A N/A S/N RCF 27449 found one slight burn.

Start Motors S/N 140290 found too much grease and (Spare) oil. Cleaned out and reassembled.

Spare Diesel Preventive W.R. #25877 ---

N/A N/A Took both air start motors apart and Air Stcrt found them to be OK.

Motors 2/3 250 VDC Preventive W.R. #25745 ---

N/A N/A Adjusted voltages to proper settings.

Bittery Charger 2/3 Diesel Preventive W.R. #25706 ---

N/A N/A Freed-up valve.

G:nerator Sp:re Feedwater Preventive W.R. #17791 ---

N/A N/A Rebuilt valve, installed pins and bushing.

Check Valve Spare Electro- Preventive W.R. #22881 ---

N/A N/A Rebuilt spare electromatic, matic Spare Versa Preventive W.R. #25297 ---

N/A N/A Repaired versa valve. Installed valve.

Valve i

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SUMMARY

OF OPERATING EXPERIENCE UNIT TWO MARCH, 1983 3-1 to 3-31 Unit Two was shutdown for the entire month for its scheduled refueling and equipment out o.. Major work included Torus painting, CRD replacements, a:.d H.P. Turbine overhaul.

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SUNMARY OF OPERATING EXPERIENCE UNIT THREE
MARCH, 1983 i

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3-1 to 3-4 Unit Three entered the month operating at a power level of i

! 834 MWe and operated until the 4th when a normal shutdown of i

the unit was conducted for snubber inspection.

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During the Unit Two refueling outage it was noted that several.

f snubbers on the main steam lines were inoperative. Inspection of the identical snubbers on Unit Three was conducted. Each of the Unit Three snubbers was visually inspected and stroked for l operability. }kt problems noted.

i 3-4 to 3-20 Following the inspection of snubbers, a normal unit startup was commenced with the unit coming on-line by the evening of the 6th.

However, problems were experienced with one of the three Low i

1 Pressure Heater strings and power was restricted to 700 MWe.

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Erosion of a small portion of the Heater shell was to blame, i

3-20 to 3-31 With the repair of the Heater string the unit reached a power level of 831 MWe. The final results for the month of March was j a capacity factor of 83.37% and an availability of 93.08%.

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