ML20091R156

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Monthly Operating Repts for May 1984
ML20091R156
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 05/31/1984
From: Schroeder B, Scott D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
84-541, NUDOCS 8406150002
Download: ML20091R156 (22)
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Text

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y ,- l OPERATING DATA REPORT DOCKET NO. 050-237

- DATE June 4, 1984 COMPLETED BY B. A. -Schrceder TELEPHONE (815) 942-2920 OPERATING' STATUS NOTES

.1. Unit Name: Dresden II

2. ' Reporting Period: May. 1984
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 Repopting Period 744' 3647 123.167
12. - ' Number of Hours Reactor Was Critical. 744 3547- 95.871.5

' 13. - Reactor Reserve Shutdown Hours 0 0 0 14.- Hours Generator On-Line 744 3625.2 94.531.2

15. . Unit Reserve Shutdown Hours 0 0 0

, 16. Gross Thermal Energy Generated (HWH) 1.828.880 8,673,686 185.368.322

17 Gross Electrical Energy Generated (MWH) 591.669 2.827.193 59.329,392
l. -18. Net Electrical Energy Generated. (MWH)' 560.443 2.6as:781 56.077.045 i 19 Unit Service Factor 100.0- 99.4 76.8 i, 20.- Unit Availability Factor. 100.0 99.4 76.8
21. - Unit Capact ty Factor (UsIng 'MDC Net) 97.6 95.5 59.0 L s22. Unit Capacity Factor (Using DER Net). 94.9 92.9 57.3 23.- Unit Forced Outage Rate 0.0 0.6 11.3 l24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duratlon of Each)
-

I June-16, 1984 for snubber inspection; September 3, 1984 for refueling.

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E' - 2 5. If Shut. Down At End Of Report Period, Estimated Date of Startup: N/A i.

.i l- 8406150002 840531 "

-R PDR ADOCK 05000237 PDR

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.;0PERATING DATA REPORT .. f ~ f, ' . ,- T d ;j

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DOCKET NO. 050-249 f

~l~ DATE June 5, 1984 I

COMPLETED BY B. A. Schroeder TELEPHONE igsg gg_79,n OPERATING STATUS NOTES

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1. -Unit Name: 'Dresden III l
2. - Reporting Perlod: May. 1984 .
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3. - Licensed Thermal Power (MWt): 2,527 -
4. Nameplate Rating (Gross MWe): 828 '

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5. _ Design Electrical Rating (Net MWe): 794 *

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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 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 3.647 112.752
12. NumLcr of Hours Reactor Was Critical 0 326.1 R1.171.1_

13 Reactor Reserve Shutdown Hours 0 0 o

14. Hours Generator On-Linc 0 0 79.861.1 l

'15 Unit Reserve Shutdown Hours 0 0 0 (

16. Gross Thermal . Energy Generated (MWH) 0 0 159,961,098
17. Gross Electrical Energy Generated'(MWH) 0 0 51,952,919
18. Net Electrical Energy Generated (MWH) -6,445 -22,401 _

49,208,183 19 Unit Service Factor 0.0 0.0 _

70.8

, 20. Unit Availability Factor 0.0 0.0 70.8

21. Unit Capacity Factor (Using MDC Net) 0.0 0.0 _,_

56.5

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22. Unit Capacity Factor (Using DER Net) 0.0 0.0 55.0 ,

23 Unit Forced Outage Rate 0.0 00 12.7 p 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): 4 N/A

25. If Shut Down At End Of Report Period, Estimated Date of Startup: July. 1984 i

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DOCKET NO. 050-237-9 UNIT NAME Dresden II -

, UNIT SHUTDOWNS AND' POWER REDUCTIONS DATE June 4. 1984 P COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920

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s REPORT HONTH May, 1984 t

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

-None - .

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9 1 2 3 4 F Forced Reason:

S Scheduled A-Equipment Failure (Explain)

Method: Exhibit G-Instructions for 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 l

D-Regulatory Restriction 4-Other (Explain) (NUREG-Ol61) j E-Operator Training & License Examination . .

} . y F-Administrative -

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l ' j G-Operational Error , -l 1 '

j _ , H-Other (Explain) I

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  • DOCKET NO. 050-249 q UNIT NAME Dryden III .'

UNIT SHUTDOWNS AND POWER REDUCTIONS DATE Juna 4, 1984 P COMPLETED BY B. A. Schroeder 'C TELEPHONE (815) 942-2920 . ;c ,

8t REPORT HONTE Mav. 1984 3! -

'l 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 CODE 5 . PREVENT RECURRENCE 8 83-9-30 S 744 C .1 - - -

. Main Turbine Repair. ,

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a 1 2

- 3 4 F Forced Reason: Method:

S: Scheduled A-Equipment Failure (Explain) Exhibit G-Instructions for

. 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 -

j N .x i G-Operational Error ,

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,, j M-Other (Expipin) '

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AVERAGE DAILY UNIT POWER LEVEL ,

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-.- LOCKET NO._050-237 UNIT II l.

DATE June 4, 1984 COMPLETED BY B. A. Schroeder

., TELEPHONE 815/942-2920 s

MONTH Mav. 1984 DAY

  • AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (HWe-Net) (MWe-Net) 1 779 17 780 2 778 18 777 3 783 13 763 4 783 20 714

,- 5 611 21 770 s  :

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6 712 22 764 7 767 23 771 8 770 24 764 780 780 3 25 10 771 26 770

)) 743 27 702 12 751 28 764.

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775 772 13 .

29 14 773 30 779 15 780 31 773 16 766 .

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- AVERAGE DAILY UNIT POWER LEVEL .

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_.- DOCKET NO. 050-249

- UtilT III l

DATE June 4, 1984

' COMPLETED'BY B. A..Schroeder

l. ,

. TELEPHONE 815/942-2920 s

MONTH May. 1984 i

DAY AVERAGE DAILY POWER LEVEL - DAY AVERAGE DAILY POWER LEVEL l ;- (MWe-Ilet) (MWe-Net) l L 1 0 17 0 2: 0 18 0 3 0 19 0

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0 21 0-5_

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DRESDEN UNIT 2 -

SAFETY RELAiED MAINTENANCE - MAY, 1984 NATURE OF LER OR OUTAGE HALFUNCTION EQUIPMENT HAINTENANCE NUMBER CAUSE RESULT' CORRECTIVE ACTION 2A Core Spray Preventive W.R. #33721 ---

N/A N/A Replaced both auxiliary contacts on open Suct. MO and close contactor.

1402-3A, EPN

  1. 2- 1402-3A 2-!402-25A Preventive W.R. #33699 ---

N/A N/A Replaced limitorque valve operator.

Velve U2 MOV 1501- Preventive W.R. #30971 ---

N/A N/A Relocated pushbutton station as required.

32A Frama Hoist Preventive W.R. #28620 ---

N/A N/A Replaced cable on frame hoist.

(Grapple)

RBM Channel Preventive W.R. #33911 ---

N/A N/A Replaced quad trip card for input.

  1. 7 D2 Diesel Preventive W.R. #33304 ---

N/A N/A Redirected the exhaust piping of starting Generator air motors.

U2 DG - The Preventive W.R. #34383 ---

N/A N/A Replaced leaking fuel oil filter gasket.

North Fuel '

Oil Filter

  1. 1508 Snubber Preventive W.R. #34813 ---

N/A N/A Repaired spherical bearing and adjusted (Toru:) EPN pipe clamp.

  1. 2-1501-24 Accum. 22-08 Preventive W.R. #33707 ---

N/A N/A Repacked valve.

_(F-2)

LPRM Group II Preventive W.R. #35511 ---

N/A N/A Repaired wire broken off SW S-5.

LPCI & CS Preventive W.R. #33375 ---

N/A N/A Checked tightness of bolts and replaced Valves nut found missing.

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DRESDEN UNIT 2

-SAFETY RELATED MAINTENANCE - MAY, 1984 MALFUNCTION NATURE OF LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT, CORRECTIVE ACTION 2-2599-1A Preventive W.R. #32049 ---

N/A N/A Repaired pinched air line.

EPN #2-2599-

[ 1A Preventive W.R. #33485 N/A N/A Installed missing bolts.

T HPCI System ---

MO Valves F

Preventive W.R. #33484 ---

N/A N/A Installed missing bolts.

F LPCI System I MO Valves s

Preventive W.R. #33788 N/A N/A Installed missing bolts.

j HPCI 10 Valve E

Preventive W.R. #33789 N/A N/A Installed missing bolts.

r HPCI 35 Valve ---

Preventive W.R. #33389 N/A N/A' Installed missing bolts.

h Valve MO 2- ---

p 3702 N/A N/A Installed missing bolts.

h LPCI SD Valve Preventive W.R. #33787 ---

M0 Cover r

N/A N/A Installed new valves on test taps.

5 Turbine ist Preventive Jf.R. #3'2983 ---

[ Stage Pres-sure Sw. By-F

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pass, EPN #

PS-504-A,B, i C,D e

N/A N/A Checked the value of electronic component

[ IRM Voltage Preventive W.R. #33267 ---

Preamp C-31 parts (C-31) for proper capacitance.

e Check, EPN #

E VP2-762A-H r HPCI 2301-3 Preventive W.R. #31541 ---

N/A N/A Made temporary repair of steam leak on pipe union. Will be replaced by next outage.

[ Valve Drain Pot F

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A c s DRESDEN UNIT 3 SAFETY RELAiED MAINTENANCE - MAY, 1984 MALFUNCTION NATURE OF LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE- ~ RESULT CORRECTIVE ACTION A0 3-203-lC Preventive W.R. #34361 ---

N/A N/A Tightened fittings - no leaks.

(MSIV)

D3 Reactor Preventive W.R. #27915 ---

N/A N/A Replaced separator-dryer head insulation Head and vent lines.

Preventive W.R. #27833 N/A N/A Removed, rebuilt and replaced recirculation 3B Recire. ---

PP, EPN #3- piping seal, t 202-3B CRD Hatch Preventive W.R. #27832 N/A N/A Closed CRD hatch.

U3 Grapple Preventive W.R. #33705 N/A N/A Tightened loose connection of break coil.

Rx Drain, EPN Preventive W.R. #34195 ---

N/A N/A Tightened packing, lubricated stem.

, #3-220-65 -

Preventive W.R. #33872 N/A N/A Vented pump and replaced pipe cap.

3A Recirc. ---

PP, EPN # 3-202-A "B" SBLC Preventive W.R. #33734 ---

N/A N/A Reused packing and installed naval brass 3

Pump, EPN # bushings.

D3-Il02-B CRD 22-19 Preventive W.R. #34244 ---

N/A N/A Replaced missing key.

Charging W:ter Valve-113 Preventive W.R. #27878 ---

N/h N/A Installed drywell cover and shield blocks.

D3 Rx D/W Cover

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DRESDEN UNIT 3 SAFETY RELAiED MAINTENANCE - MAY, 1984 l

MALFUNCTION NATURE 0.F LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION N/A N/A Installed and removed safety valve gags D3 Safety Preventive'.W.R. #27887 ---

Valvas Target (required during hydro) and replaced Rock, EPN # target rock gasket.

3-203 Preventive W.R. #33573 ---

N/A N/A Reinstalled pump discharge flange.

U3 B Core Spray Pump Discharge, EPN #3-1402-28B D*, CRD Snub- Preventive W.R. #31572 '--- N/A N/A Replaced five snubbers on CRD scram discharge line.

bers 4UI,402, 409,411,415 Diesel Preventive W.R. #32941 ---

N/A N/A Replaced both air start motors.

Generator l

Preventive W.R. #30047 N/A N/A Replaced mechanical seal on pump.

l 3C LPCI PP, ---

! EPN #3C-1502 Preventive W.R. #28615 N/A N/A Replaced cable on frame hoist.

Frame Hoist (Grapple)

D3 Main Steam Preventive W.R. #27882 ---

N/A N/A Removed and installed main steam line plugs.

Line Plugs Preventive W.R. #33354 N/A N/A Rebuilt versa valve.

"A" Valve Rx. ---

b1dg. Supply '

Air Isolation -

Valve, EPN #

D3 "A" 5742

r- .. 1 DRESDEN UNIT 3 SAFETY RELAiED MAINTENANCE - MAY, 1984 F= ,

MALFUNCTION NATURE OF LER OR OUTAGE EQUIPMEtTT EMINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" Valve Rx. Preventive W.R. #33355 ---

N/A N/A Rebuilt versa valve.

Bldg. Supply Air Ieolation Volve, EPN #

D3 "B" 5742 Accumulator Preventive W.R. #33618 ---

N/A N/A Tightened and repacked star valve bonnet.

  1. 50-31, EPN #

3-0305-111 i "B" LPCI Hx., Preventive W.R. #34447 N/A N/A Removed and replaced head on "B" LPCI Hx.

EPN #3-1501-3B LPCI Testable Preventi re W.R. #34033 ---

N/A N/A Rebuilt air operator on check valve.

Chrck, EPN #

3-1501-25A Pipe Hangers Preventive W.R. #34193 ---

N/A N/A Replaced missing U-bolts on pipe hanger, on 2" Pipe HPCI Valve Preventive W.R. #34198 ---

N/A N/A Tightened packing and lubricated stem.

3-2301-4 41 Snubber / Preventive W.R. #31960 ---

N/A N/A Ground pipe clamp to provide clearance Pipe Clamp for snubber.

3A Recirc. Preventive W.R. #34192 N/A' N/A Reconnected pipe hanger.

Pump # 1 Seal C vity Drain A0 3-203-1B Preventive W.R. #34360 ---

N/A N/A Tightened titting and union.

(MSIV)

DRESDEN UNIT 3 *

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SAFETY RELAiED HAINTENANCE - MAY, 1984 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION LPCI hoom Preventive W.R. #34356 N/A N/A Replaced service water inlet valve.

.Coolar West Servics Water Inlet Valve, EPN #3-3933- '

503B A0 3-220-44 Preventive W.R. #34358 ---

N/A N/A Tightened packing.

Root Velve, Preventive W.R. #34200 ---

N/A N/A Tightened union.

EPN #3-263- .

1-210 .

A0 3-220-46 Preventive W.R. #34683 ---

N/A N/A Installed new air diaphragm and air regulator.

HPCI Pumps- Preventive W.R. #27827 ---

N/A N/A Repacked coupling.

Coup. HPCI Turbin:-Coup.

3-202-5A-5B Preventive W.R. #33221 ---

N/A N/A Inspected condition of grease, replaced 3-202-4A-4B worn bearings and seals. 'Also replaced grease as needed.

3 "B" LPCI Preventive W.R. #32737 ---

N/A N/A Disassembled valve for internal inspec-H st Exchan- tion, lapped seat and reassembled, ger Dic-chstge Valve, EPN #MO 1501-3B Core Spray, Preventive W.R. #33333 ---

N/A N/A Disassembled valve for internal inspec-EPN #3-1402- tion.and reassembled. Internals ok.

8A

. . . j DRESDEN UNIT 3 i

SAFETY RELATED MAINTENANCE - MAY, 1984  !

HATURE OF LER OR OUTAGE HALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT  !

CORRECTIVE ACTION HPCI Stop Preventive W.R. #33552 --

N/A . N/A Replaced old hose with new flex ho,se.

Velva High Side Drain 3-2301-65, EPN #3-2301-65 Steam Leak Preventive W.R. #34600 N/A N/A Tightened union - upstream of A0-3-2301-31.

t LPCI 22B Preventive W.R. #34201 N/A N/A Adjusted packing and lube stem.

Valve, EPN

  1. 34201 '

D3 CRD Sup- Preventive W.R. #27854 --

N/A N/A Removed CRD support steel.

port Steel D3 MSIV, Preventive W.R. #27912 -

N/A N/A Cleaned and lubed stem. No packing needed.

EPN #3-203-IA Torus Medium Preventive W.R. #24207 N/A N/A Rearranged piping and valve per sketch using Renge Level existing parts to permit proper operation.

Trrn mitter Low Tep, EPN

  1. LT3-1626 3-101-IA, Preventive W.R. #20102 N/A N/A Repacked valve per work package.

EPN #3-1001-IA MO 1301-1 Preventive W.R. #27425 --

N/A N/A Performed internal inspection of the valve limitorque operator. Replaced grease as needed.

D3 MSIV Preventive W.R. #27911 N/A N/A Cleaned and lubed stem. No packing needed.

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.4 DRESDEN UNIT- 3 1'

T SAFETY RELATED MAINTENANCE - MAY,1984

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y NATURE OF LER OR OUTAGE N ION EQUIPMENT MAINTENANCE NUMBER LCAUSE RESULT CORRECTIVE ACTION .j Tergst Rock Preventive W.R. f,27834 'N/A N/A Installed and removed blank flanges. I Elcetromatic ,

D3 );

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D3 MSIV, EPN Preventive W.R. #27908 N/A N/A Tightened packing and cleaned stem.

  1. 3-203-2A t

D3 MSIV, EPN ~ Preventive W.R.'#27907 --

-N/A N/A Adjusted packing and lubed stem. [

  1. 3-203-2B 1, J

D3 MSIV, EPN Preventive W.R. #27909 N/A .N/A Adjusted packing, cleaned and lubed stem.

  1. 3-203-ID l. '

6 D3 MSIV, EPN Preventive W.R. #27905 --

~N/A N/A Adjusted packing, cleaned and lubed stem. a

  1. 3-203-2D D3 MSIV, EPN Preventive. W.R. #27906 'N/A N'/A - Adjusted packing, cleaned and lubed stem.
  1. 3-203-2C 3-220-1 Main Preventive W.R. #27886 N/A N/A Adjusted packing and lubed stem.

Steam Line Drain, EPN

  1. M03-220-1 3-220-2 Main Preventive W.R. #27885 --

N/A

  • N/A Adjusted packing and lubed stem.

Steam Line -

Drain, EPN

  1. 3-220-2 Recire. Preventive W.R. #31335 --

N/A N/A Replaced all the cap screws and used lock-Cross Tie tite.

Bypasa MO-202-9A, EPN

  1. 3-202-9A

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DRESDEN UNIT ' '3 '

4 SAFETY RELATED MAINTENANCE L- MAY,1984 [

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. hi NATURE OF .LER OR OUTAGE- MALFUNCTION EQUIPMENT MAINTENANCE. NUMBER CAUSE RESULT CORRECTIVE ACTION 3-1402-6A Preventive W.R. #20098 N/A N/A Repacked valve.; y.

Cora Spray '

. Manual Iso-ictica Valve i:

EPN #3-1402-  !.

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t D3 MSIV, EPN Preventive W.R..#27910 N/A N/A Adjusted packing'and lubed stem.

  1. 3-203-lC l'

MSIV T/Cs Preventive W.R. #30316 N/A N/A Disconnected and. reconnected MSIVs T/Cs.

Remov:d and Conn cted L-for Ecfuel Outegs MO 3-1501-3B Preventive W.R. #32455 N/A N/A Found wrong blub in socked. Replaced with i proper bulb - now works properly.

U3 IRM i15, Preventive W.R. #34450 N/A N/A Replaced detector.

EPN #RE3-760B 7 3-1402-90 Preventive W.R. f34339 U/A N/A Applied PST sealant and' tightened fittings.

cod A0 1402-9A <

IB MSIV Preventive W.R. #34472 --

N/A N/A Replaced switch for light indication.

U3 250V Preventive W.R. #34929 --

N/A N/A Adjusted charger and voltmeter. [

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DRESDEN UNIT 3 ~[

SAFETY RELATED MAINTENANCE - MAY, 1984 NATURE OF LER OR OUTAGE N UNMION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION ,

3B Cora Preventive W.R. #19281 N/A N/A Replaced maglock limit switch.

Sprcy Test Check Valve, '

EPN #3-1402-Ca U3 LPCI Sys- Preventive W.R. #27748 N/A N/A Inspected and replaced MOV contactors per j tem MOV Con- (Also includes slave DMP 7300-5. t tectors, work packages #1 thru j

28)  !

I SDV Hi Level Preventive W.R. #34101 N/A N/A Investigated 1/2 scram problem. Found SW l Switch internals misaligned - repaired.  ;

k Relief Valve Preventive W.R. #30317 ---

N/A N/A Removed and reinstalled flow sensors to j Flow Sensors permit other work to be performed, j

'J3 Torus to Preventive W.R. #30597 ---

N/A N/A Removed and replaced covers.

Drywell Vrcuum LPCI cnd Preventive W.R. #33376 ---

N/A N/A Rep 1.ced and tightened missing bolts and CS Velves nuts.

MO 2301-49, Preventive W.R. #33547 ---

h/A N/A Removed and replaced broken wheel.

EPN #3-M02301-49 fI

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..m DRESDEN UNIT 1/3 *

. 'l SAFETY RELATED MAINTENANCE - MAY, 1984 ,

f NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION i D2/3 Diesel Preventive W.R. #33692 N/A N/A Removed and replaced manhole cover.

Fuel Storage Tank i

V:rca Valves Preventive W.R. #33691 ---

N/A N/A Rebuilt versa valves. (Valves returned to j Stores.) j l

IRM Detector Preventive W.R. #34526 N/A N/A Removed kinks from IRM and installed new  !

thermal sleeve.

l U2/3 Diesel Preventive W.R. #27711 N/A N/A Installed exhaust screen inspection port.

Generctor, EPN #2/3-660C Tcrgat Rock Preventive W.R. #27836 N/A N/A Removed, rebuilt and replaced target rock Pilct Valve, pilot valve. .

EPN #2/3- '

2-3A i 1

2/3 Rx Bldg. Preventive W.R. #33523 N/A N/A Adjusted and replaced operator.

Interlock Outcid2 Door i, TN-9 Cesk Preventive W.R. #32714 N/A N/A Gaskets changed and all leak tests per-formed.

2/3 250V Preventive W.R. #34930 ---

N/A N/A Adjusted charger and voltmeter. t Chnrg r i

2/3 Diesel Preventive W.R. #32861 N/A N/A Performed quarterly, semi-annual and [

Genarctor annual inspections. Also inspected switch  !

gear and breaker per procedures.

I

  • e DRESDEN UNIT 2/3 '

SAFETY RELATED MAINTENANCE- MAY, 1984 ,I 1

NATURE OF LER OR OUTAGE M ION '

EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION TN-9 Fuel Preventive W.R. #29859 N/A N/A Performed preventive maintenance work. l Shipment Also performed required preliminary testing  !

Caik of cask in accordance with Transnuclear test !

procedure E-4/01.  !

Elcctromatic Preventive W.R. #31129 ---

N/A N/A Rebuilt spare assembly with parts supplied Pilst Stem from manufacturer. Checked for proper A Dick clearences. [

Quad Cities Preventive W.R. #33767 ---

N/A N/A Rebuilt and tested (Quad Cities) spare main I Rx Safaty steam relief valve.

Valva S/N BK6252 Quad Cities Preventive W.R. #33772 N/A N/A Rebuilt and tested (Quad Cities) spare main Rx Spare steam relief valve.

Saf ty Valve {

S/N BK6294  !

Quad Cities Preventive W.R. #33765 ---

N/A N/A Rebuilt and tested (Quad Cities) spare main Spara Rx steam relief valve.

Saf;ty Valve S/N BK7164 I

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t SUlttARY OF OPERATING EXPERIENCE-i; UNIT TWO f

MAY, 1984 ,

I l 1 i

05-01 to 05-31 . Unit 2 entered the month operating at a power level of 819 MWe and operated continuously throughout the entire i month-(with normal power reductions on weekends for i surveillances), reaching a power level of 826 MWe with a capacity factor of 95.36 and an availability of 100%.

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SUMMARY

OF OPERATING EXPERIENCE UNIT THREE MAY, 1984 05-01 to 05-31~ Unit 3 remained shutdown and off-line the entire period.

Work on the main turbine - (H.P. rotor) continues. Lathe work is now in progress. Other work includes repair of the stationary elements.

The unit ic expected to return to service sometime mid-July, 1984.

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=-.

f/ COmm0mW9alth Edison oA ' a \j Dresden Nuclear Power Station

(% , R.R. #1 Morris,lHinois 00460 Telephone 415/942-2920 June 4,1984 DJS LTR: 84-541 Director, Office of Inspection and Enforcement' United States Nuclear _ Regulatory Commission Washington, DC_ 20555 ,

l Attention: Document Control Desk j

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,

//)

D. . Scott Station S2perintendent Dresden Nuclear Power Station DJS: BAS:hjb Enclosure cca Region III, Regulatory Operations, U.S. NRC Chief, Division Nuclear Safety, State of IL U.S. NRC, Document Management Branch Nuclear Licensing Administrator Nuc. Sta. Div. Vice Pres.

Manager, Tech. Serv. Nuc. Sta.

Tech. Staff EA On-Site NRC Inspector Sta. Nuc. Eng. Dept.

Comptro11er's Office PIP Coordinator INPO Records Center File /NRC Op. Data '

File / Numerical If L

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