ML20091R156

Monthly Operating Repts for May 1984

ML20091R156
Person / Time
Site:	Dresden
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)

Text

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i-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.

l' i

E'

- 2 5.

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

N/A i.

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.;0PERATING DATA REPORT

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T DOCKET NO.

050-249 f

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DATE June 5, 1984 I

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

(.

1. -Unit Name: 'Dresden III l

2. - Reporting Perlod:

May. 1984 2I!

3. - Licensed Thermal Power (MWt):

2,527 4.

Nameplate Rating (Gross MWe):

828

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5. _ Design Electrical Rating (Net MWe): 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 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 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 COMPLETED BY B. A. Schroeder P

TELEPHONE (815) 942-2920

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REPORT HONTH May, 1984 s

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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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

{

C-Refueling

.3-Automatic Scram

' Event Report (

) File l

D-Regulatory Restriction 4-Other (Explain)

(NUREG-Ol61) j E-Operator Training & License Examination.

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y F-Administrative

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G-Operational Error,

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j H-Other (Explain)

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g DOCKET NO. 050-249

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q UNIT NAME Dryden III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE Juna 4, 1984 COMPLETED BY B. A. Schroeder

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TELEPHONE (815) 942-2920

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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

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. Main Turbine Repair.

7 a

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 (

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

(NUREG-0161)

E-Operator Training & License Examination F-Administrative N

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G-Operational Error

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AVERAGE DAILY UNIT POWER LEVEL

(i-. i 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 3

780 25 10 771 26 770

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743 27 702 12 751 28 764.

775 29 772

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13 14 773 30 779 15 780 31 773 16 766

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DOCKET NO. 050-249

- UtilT III 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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5_

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0 7

0 23 0

8

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25 0

10

'O 26 0-1 11 0

27 0

12

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28 0

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33 0

29 0

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- 30 0

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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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- I DRESDEN UNIT 2

-SAFETY RELATED MAINTENANCE - MAY, 1984 MALFUNCTION NATURE OF LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE

RESULT, CORRECTIVE ACTION N/A N/A Repaired pinched air line.

2-2599-1A Preventive W.R. #32049 EPN #2-2599-

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1A N/A N/A Installed missing bolts.

T HPCI System Preventive W.R. #33485 MO Valves F

N/A N/A Installed missing bolts.

F LPCI System Preventive W.R. #33484 I

MO Valves sj HPCI 10 Valve Preventive W.R. #33788 N/A N/A Installed missing bolts.

E N/A N/A Installed missing bolts.

HPCI 35 Valve Preventive W.R. #33789 r

N/A N/A' Installed missing bolts.

h Valve MO 2-Preventive W.R. #33389 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

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Stage Pres-sure Sw. By-F pass, EPN #

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PS-504-A,B, i

C,D e

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

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IRM Voltage Preventive W.R. #33267 parts (C-31) for proper capacitance.

Preamp C-31 Check, EPN #

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VP2-762A-H N/A N/A Made temporary repair of steam leak on pipe r

HPCI 2301-3 Preventive W.R. #31541 union. Will be replaced by next outage.

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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 and vent lines.

Head N/A N/A Removed, rebuilt and replaced recirculation 3B Recire.

Preventive W.R. #27833 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.

1. 3-220-65 3A Recirc.

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

PP, EPN # 3-202-A 3 "B" SBLC Preventive W.R. #33734 N/A N/A Reused packing and installed naval brass bushings.

Pump, EPN #

D3-Il02-B N/A N/A Replaced missing key.

CRD 22-19 Preventive W.R. #34244 Charging W:ter Valve-113 N/h N/A Installed drywell cover and shield blocks.

D3 Rx D/W Preventive W.R. #27878 Cover

r DRESDEN UNIT 3 SAFETY RELAiED MAINTENANCE - MAY, 1984 l

MALFUNCTION NATURE 0.F LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION D3 Safety Preventive'.W.R. #27887 N/A N/A Installed and removed safety valve gags (required during hydro) and replaced Valvas Target target rock gasket.

Rock, EPN #

3-203 U3 B Core Preventive W.R. #33573 N/A N/A Reinstalled pump discharge flange.

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

Diesel Preventive W.R. #32941 Generator l 3C LPCI PP, Preventive W.R. #30047 N/A N/A Replaced mechanical seal on pump.

l

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

(Grapple)

D3 Main Steam Preventive W.R. #27882 N/A N/A Removed and installed main steam line plugs.

Line Plugs "A" Valve Rx.

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

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 N/A N/A Replaced missing U-bolts on pipe hanger, Pipe Hangers Preventive W.R. #34193 on 2" Pipe N/A N/A Tightened packing and lubricated stem.

HPCI Valve Preventive W.R. #34198 3-2301-4 N/A N/A Ground pipe clamp to provide clearance 41 Snubber /

Preventive W.R. #31960 for snubber.

Pipe Clamp 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 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.

N/A N/A Disassembled valve for internal inspec-3 "B" LPCI Preventive W.R. #32737 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.

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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

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Tergst Rock Preventive W.R. f,27834

'N/A N/A Installed and removed blank flanges.

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.

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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 N' A -

Adjusted packing, cleaned and lubed stem.

D3 MSIV, EPN Preventive. W.R. #27906

'N/A

/

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 Jm.

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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 #3-1402-6A-F

-t: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

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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 f

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'l DRESDEN UNIT 1/3 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.

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

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Genarctor annual inspections. Also inspected switch gear and breaker per procedures.

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e DRESDEN UNIT 2/3

,I SAFETY RELATED MAINTENANCE-MAY, 1984 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.

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I Quad Cities Preventive W.R. #33767 N/A N/A Rebuilt and tested (Quad Cities) spare main 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

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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 i

819 MWe and operated continuously throughout the entire 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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\\j Dresden Nuclear Power Station COmm0mW9alth Edison f

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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 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