ML20134G672

From kanterella
Jump to navigation Jump to search
Monthly Operating Rept for Jul 1985
ML20134G672
Person / Time
Site: Dresden Constellation icon.png
Issue date: 07/31/1985
From: Maxwell D, Scott D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
85-806, NUDOCS 8508280019
Download: ML20134G672 (32)
v • d • e


Text

-

, OPERATING DATA REP. ORT I

DOCKET NO. 050-237 DATE August 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden II
2. Reporting Perlod: July, 1985 -

3 Licensed Thermal Power (MWt): 2.527

4. Nameplate Rating (Gross MWe): 828
5. Design Electrleal 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 744.0 5,087.0 133,391.0
12. Number of Hours Reactor Was Critical 727.8 2,442.4 101,178.3
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 707.3 .

2,244.4 99,554.2

15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 1,709,842 4,849,205 196.287,263
17. Gross Electrical Energy Generated (MWH) 535,960 1,522,582 62,743,923
18. Net Electrical Energy Generated. (MWH) 508,863 1,430,496 59,279,122
19. Unit Service Factor 95.1 44.1 74.6
20. Unit Availability Factor 95.1 44.1 /4.0
21. Unit Capacity Factor (Using MDC Net) 88.6 36.4 57.6
22. Unit Capacity Factor (Using DER Net) 86.1 35.4 56.0
23. Unit Forced Outage Rate 4.9 14.0 11.3
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Jnubber inspection, mid-October, 1985 - weekend.

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

~

BBAe2egggegggg7 ,

11

a

, OPERATING DATA REPORT v' ,

I'

  • DOCKET NO. 050-249 DATE August 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/M2-2920 OPERATING STATUS NOTES
1. Unit Name: Dresden III
2. Reporting Period: July, 1985 3 Licensed Thermal Power (MWt): 2 527
4. Nameplate Rating (Gross MWe): gna 5 Design Electrical Rating (Net MWe): 794
6. Maximum Dependable Capacity (Gross MWe): R12 7 Maximum Dependable Capacity (Net MWe): 773
8. If Changes Occur in Capacity Ratings (items 3 Through 7) Since Last Report, Give Reasons:

N/A 9 Power Level to Which Restricted, if Any (Net MWe): N/A

10. Reasons For Restrictions, if Any: N/A This Month Yr-to-Date Cumulative,
11. Hours in Reporting Period 744.0 5,087.0 122,976.0
12. Number of Hours Reactor Was Critical 744.0 4,838.7 94,716.7
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 744.0 4,766.0 87,938.1
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (HWH) 1,687,669 10,886,095 177,943,118
17. Gross Electrical Energy Generated (HWH) 527,501 3,443,018 57,649.995
18. Net Electrical Energy Generated.(MWH) 501.551 3,278,280 54,614,510
19. Unit Service Factor 100.0 93.7 71.5
20. Unit Availability Factor 100.0 93.7 71.5
21. Unit Capacity Factor (Using MDC Net) 87.2 83.4 57.5
22. Unit Capacity Factor (Using DER Net) 84.0 81.2 55.9
23. Unit Forced Outage Rate 0.0 5.7 12.4
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Refueling and Recirculation Piping Replacement Outage - October, 1985 - for approxi-mately six (6) months.

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

i .

DOCKET NO. 050-237 UNIT NAME Dresden 11.

UNIT SHUTDOWNS AND POWER REDUCTIONS DATE August 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 REPORT MONTH JULY,.1985 METHOD OF LICENSEE ~

NO. CAUSE & CORRECTIVE DATE' TYPEI DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 5 85-07-27 F 36:45 A 3 85-031-0 -- --

Scram discharge volume high

, (36.8) level with Rx scram.

1 i

i I

1 2 ,

3 4 F: Forced Reason:

Method: Exhibit G-Instructions for l

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 8

}

e H-Other (Explain)

DOCKET NO. 050-249~

UNIT NAME Dreeden III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE August 1, 1985

, COMPLETED BY D. C. Maxwell

! TELEPHONE (815) 942-2920 REPORT MONTH JULY, 1985 l .

HETHOD OF LICENSEE

  • NO. DATE' TYPE 1 DURATION CAUSE & CORRECTIVE REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT f CODE 4 CODES PREVENT RECURRENCE

, None i

  • i i . .

4 l

1 i

I 2 3 F: Forced 4 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)

E-Operator Training & License Examination (NUREG-0161) ,

F-Administrative 3

G-Operational Error i

H-Other (Explain) [

e

  • UNIQUE REPORTING REQUIREMENTS MAIN STEAM RELIEF VALVE OPERATIONS Relief valve operations during the reporting period of July, 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 07-01-85 to 07-31-85 None 3 07-01-85 to 07-31-85 None

, COMMONWEALTH EDISON COMPANY DRESDEN STATION i

, MAXIMUM DAILY LOAD MONTH OF JULY, 1985 HOUR MAXIMUM DAILY LOAD DAY ENDING 10i 1 2400 1,558,700 2 1900 1,537,600 3 1200 1,589,000 4 0800 1,546,600 l 5 2200 1,602,300 6 0100 1,546,300 i

7 2400 1,583,100 8 1200 1,595,600 9 0100 1,577,600 i

j 10 1500 1,586,900 11 2000 1,589,400 12 1200 1,592,800 l

i 13 2400 1,582,600 i

i 14 0100 1,548,000 15 2400 1,463,000 16 2400 1,559,800 17 1200 1,590,200 18 1200 1,588,600 19 1700 1,589,700 20 1600 1,574,100 l

21 2400 1,508,700 22 2400 1,533,200 23 2400 1,539,500 24 1500 1,564,900 25 2300 1,568,400 26 2200 1,594,500 27 0100 1,509,300 28 1400 782,900 29 1700 1,164,500 30 2400 1,009,800 31 2400 1,121,900

g.

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-237 .

UNIT II L

DATE August 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 HONTH JULY, 1985 OAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 701 17 765 2 753 18 776 3 755 750 19 4 750 20 734 5 749 21 759 6 775 22 744 7 746

  • 23 785 8 749 24 774 9 733 25 754 10 763 26 752 11 761 27 331 12 760 28 , 0 13 645 29 232 14 761 '

__ 30 538 15 760 31 636 -

16 762 i  !

i i

l L

. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249 UillT III DATE August 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920

-MONTH JULY. 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 735 17 742 2 746 18 753 3 737 19 734 4 750 20 731 5 744 21 677 6 626 22 668 7- 738 23- 696 8 735 24 708 9 742 25 717 10 754 26 717 ,

)) 715 27 747 12 747 28 727 13 742 29 601 14 393 30 325 15 514 31 334 i 16 684 i

,4e = . , , .s . . = , . - -- = <=

lljjli l e

N O ,

I t T s C e A t E e V g I r T a C h E c R s R i O d C _

d e

m r

o f

r e

P T

L U

A 5 /

8 N S N 9 O E 1 I R T

C

~

9 Y N L U U F J L E A S A I - M U /

A N E C T C I N N A U N E

N T E E N G D I A S A T E M UR R OE D D B E RM T OU A N L R E E R L Y

T E

F A 4 S E 1 C 8 N

A 2 4

N #

E T

N .

I A R.

_ M W F e O i v

E t R n U e T v A e N r P

T N C E I M I P C y I

U P r Q He E t 1 t

- a UB

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JL1Y, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION D-2 1601-63 Preventive W.R. #27281 N/A N/A Changed solenoid.

Valva Torus V:nt - SBCT .

22301-31 HPCI Corrective W.R. #28029 N/A N/A Replaced solenoid.

Trap Bypass 305-117 Preventive W.R. f32609 N/A N/A Rebuilt valves.

Accumulator

  1. 10-39 D-2 CRD J-2 Preventive W.R. #33771 N/A N/A Rebuilt valves.

(34-07)

MO 1501-38B Preventive W.R. #34847 N/A N/A Inspected - all ok.

Loc 1 Control Switch MO-2-1501-28B Preventive W.R. #36085 N/A N/A Reconnected sealtite.

LPCI Valve U-2 Rx Vent Corrective W.R. f36200 N/A N/A Repaired broken wire.

Pcnel 2252-24A Electrical Preventive W.R. #36219 N/A N/A Sealed penetration.

P:netration 202W 203-3A U-2 Corrective W.R. #36432 N/A N/A Replaced solenoid.

Terg':t Rock Solenoid 305-117 & 118 Preventive W.R. f36433 N/A N/A Rebuilt solenoid.

U-2 Scram Pilots

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMdER CAUSE RESULT CORRECTIVE ACTION U-2 HPCI Turning Preventive W.R. #36562 N/A N/A Checked circuit - found no problem.

Gerr MCC 29-7 480V Corrective W.R. #36627 N/A N/A Replaced fuses and fuse holders.

Motor Control Cantar

  • Ralay 590-123D Preventive W.R. #37558 N/A N/A Cleaned and adjusted relay.

Auxiliary U2/DG Cooling Preventive W.R. #38336 N/A N/A Tested - works properly.

Water Pump Altra End-of-Cycle 9 Preventive W.R. #38573 N/A N/A Performed repairs per procedure.

LPRM Replacement U2 Rx Scrams Preventive W.R. #38802 N/A N/A Installed and removed jumpers to prevent unwanted scrams when fuel is removed from LPRM 08-17D, # '

Corrective W.R. #38988 N/A N/A APRM 6 o e ted lead to computer.

2-1540-3A AP Preventive W.R. #40529 N/A N/A Checked controller.

Controller "A" LPCI Heat Exchanger "B" LPCI Heat Preventive W.R. #40530 --

N/A N/A Checked controller.

Exchanger AP Controller Tr. 26,27 and 29 Preventive W.R. #40875 N/A N/A Installed ground wire.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Core Spray Preventive W.R. #40962 N/A N/A Cleaned and cycled torque' switch.

1402-25B Penni 902-37 Preventive W.R. #41020 N/A N/A Replaced power cables.

MSIV's I.B. and Preventive W.R. f41136' N/A N/A Jumpers installed and removed 0.B. RPS Fuses CRD D-8 Corrective W.R. f41142 N/A N/A Installed valves.

2-1601-55 Valve Co:rective W.R. f41857 N/A N/A Replaced solenoid valve.

HPCI Level Preventive W.R. #41912 ---

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

Switch Rx Level Trans. Preventive W.R. #41931 N/A N/A Inspected - no repairs made.

LT-2-263-61 U-2 MOV 7507A Preventive W.R. #42072 N/A N/A Inspection performed.

U-2 MOV 7505A Preventive W.R. #42074 ---

N/A N/A Inspection performed.

U-2 MOV 1501-21E Preventive W.R. #42077 N/A N/A Inspection performed.

U-2 MOV-1501-32E Preventive W.R. #42088 N/A N/A Inspection performed.

U-2-MOV-1501- Preventive W.R. #42089 N/A N/A Inspection performed.

11B U-2 MOV-1501-3B Preventive W.R. #42090 N/A N/A Inspection performed.

U-2 MOV-1501-3A Preventive W.R. f42093 N/A N/A Inspection performed.

U-2 MOV-1501-27A Preventive W.R. f42095 N/A N/A Inspection performed.

U-2 MOV 1501-28E Preventive W.R. f42096 N/A N/A Inspection performed.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION U-2 MOV-1402-25E Preventive W.R. #42098 ---

N/A N/A Inspection performed.

U-2 MOV-1402-24B Preventive W.R. #42099 ---

N/A N/A Inspection performed. .

U-2 MOV-1402-25A Preventive W.R. #42100 N/A N/A Inspection performed.

U-2 MOV-2301-35 Preventive W.R. #42111 N/A N/A Inspection performed.

U-2 MOV-1201-3 Preventive W.R. #42112 N/A N/A Inspection performed.

U-2 MOV-1201-2 Preventive W.R. #42113 N/A N/A Inspection performed.

U-2 MOV-202-5B Preventive W.R. #42115 N/A N/A Inspection performed.

U-2 MOV-202-5A Preventive W.R. #42116 ---

N/A N/A Inspection performed.

MO 2-1001-1B Preventive W.R. #42491 ---

N/A N/A Inspection performed.

220-44 Recircu- Corrective W.R. #42534 ---

N/A N/A Rebuilt vaive and replaced coil.

lation System Sample Isolation Valva HPCI Turbine Preventive W.R. #42587 N/A N/A Cleaned limits.

Turning Gear Engag: ment Switch LS3 M-2 CRD (46-07) Preventive W.R. #42620 N/A N/A Tested - all ok.

Rod Sclect Preventive W.R. #42624 ---

N/A N/A Vacuumed display panel.

Matrix U-2 Grapple Preventive W.R. #42650 N/A N/A Removed and replaced track Track Switches switches.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2-1501-21B Corrective W.R. #42659 ---

N/A N/A Replaced auxiliary contact.

Valva R: lays 590-112A, Preventive W.R. #42866 N/A N/A Installed and removed blocks.

B,C and D MO-1402-4B Preventive W.R. #43102 ---

N/A N/A Replaced motor.

HPCI Inlet Corrective W.R. #43103 ---

N/A N/A Replaced solenoid.

Drain Pot 2A Trap Bypass Valve Line 2-1012A Corrective W.R. #43113 ---

N/A N/A Installed bolt.

Ch:ck Valve Preventive W.R. #43133 ---

N/A N/A Removed and cleaned check valve.

  1. 2-263-2-33 Ch ck Valve Preventive W.R. #43134 ---

N/A N/A Removed and cleaned check valve.

  1. 2-263-2-31N Ch ck Valve Preventive W.R. #43135 ---

N/A N/A Cleaned check valve.

  1. 263-2-31W SBGT "A" Train Corrective W.R. #43144 ---

N/A N/A Replaced filters.

Demister SBGT "B" Train Preventive W.R. #43145 ---

N/A N/A Installed new filters.

Demister IRM #13 Corrective W.R. #43162 ---

N/A N/A Replaced pre-regulator.

S condary Preventive W.R. #43175 N/A N/A Adjusted magnets and door operator.

Containment Interlock Doors MOV 1402-38B Corrective W.R. #43210 ---

N/A N/A Replaced snubber.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1984 LER OR OUTAGE MALFUNCTION EQUIPMENT _

NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 1601-63 Valve Corrective W.R. #43216 ---

N/A N/A Rebuilt air operator piston.

CRD 22-03 (F-1) Corrective W.R. #26864 ---

N/A N/A CRD rod select switch adjusted. ,

D-2A MSIV (In Corrective W.R. #43220 ---

N/A N/A Replaced air cylinder, E & 0 rings.

Board) '

D-2D MSIV (In Corrective W.R. #43221 N/A N/A Replaced air cylinder, E & 0 rings.

Board)

RPS 590-112 Preventive W.R. #43228 ---

N/A N/A Installed fluke and brush recorder.

R lays 287-1GB ADS Preventive W.L. #43268 ---

N/A N/A Replaced and adjusted time delay relay.

Tims Delay Relay LPRM #48-49C Preventive W.R. #43270 N/A N/A Adjusted voltage.

Pow r Supply 287-124B ADS Preventive W.R. #43294 N/A N/A Checked - found no problem.

Tima Delay Rnlay U-2 125V Battery Preventive W.R. #43296 ---

N/A N/A Adjusted charger.

Charger 2 U-2 250V Battery Preventive W.R. #43297 ---

N/A N/A Adjusted charger.

Charger 2 A0 224-44 Valve Corrective W.R. #43299 ---

N/A N/A Installed new diaphragm.

LPCI 2-1501-25A Preventive W.R. #43308 ---

N/A N/A Replaced 0-ring and cover gasket.

Check Valve

. o DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 261-37A Target Preventive W.R. #43318 ---

N/A N/A Replaced micro switch.

Rock Position Light (0 pen) .

APRM K-23 Relays Preventive W.R. #43344 ---

N/A N/A Replaced relays.

2A CCSW Loop Preventive W.R. #43357 ---

N/A N/A Performed static pressure adjustment.

Flow Transmitter U-2 Diesel Gene- Corrective W.R. #43364 ---

N/A N/A Pad welded - cut 2 gaskets.

rator Cooling M20 Pump 263-102D Jet Preventive W.R. #43384 ---

N/A N/A Calibrated per procedure.

Pump #16 Indica-tion 2-203-2B MSIV Corrective W.R. #43389 ---

N/A N/A Replaced U-cups and piston cylinder.

U-2 CCSW PP Corrective W.R. #43456 ---

N/A N/A Opened drain and operated valve.

Vault Floor Drain 2-3702 RBCCW Preventive W.R. #43478 ---

N/A N/A Adjusted limits.

Supply to Dry-well D-2 Clean-ups Preventive W.R. #43505 N/A N/A Filled grease cups.

2-1402-25A Preventive W.R. #43522 N/A N/A Cleaned limitorque.

LPCI 2-MO-1501- Preventive W.R. #43523 N/A N/A Inspected - all ok.

3A LPCI 2-M02-1501- Preventive W.R. #43524 N/A N/A Cleaned and repaired valve and housings.

3B

  • DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION
  • EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2-M02-3706 Preventive W.R. #43525 N/A N/A Cleaned and replaced grease.

LPCI Shell By- Preventive W.R. #43528 N/A N/A Lubed stem and tightened. packing. ,

pass MO-2-1501-11A Limitorques Preventive W.R. #43531 N/A N/A Removed grease zirk fittings, installed pipe plugs.

2-AO-203-2A Preventive W.R. #43537 N/A N/A Replaced block and E-rings.

MSIV 2-AO-203-2D Preventive W.R. #43538 ---

N/A N/A Replaced block.

MSIV MOV 1501-3A Corrective W.R. #43599 N/A N/A Correct E.Q. deficiencies.

Accumulator Preventive W.R. #43683 ---

N/A N/A Tightened fittings and bolts.

38-15 D-2 MO-1501-3A Preventive W.R. #43691 N/A N/A Greased and replaced gaskets.

HPCI Temperature Preventive W.R. #43694 ---

N/A N/A Hooked unistrut hanger to conduit.

Switches for Rupture Disc.

HPCI Temperature Preventive W.R. #43695 N/A- N/A Installed new fitting.

Switch for Rup-ture Disc.

LPRM 5B 48-17 Preventive W.R. #43699 N/A N/A Checked - everything ok.

2A LPCI Hx Preventive W.R. #43763 N/A N/A Tightened bolt covers.

FT2-1542-A "A" Preventive W.R. #43765 N/A N/A Cleared sensing lines.

CCSW Loop Flow Indicator

v. .

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATimE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION RBM #7 Preventive W.R. #43767 N/A N/A Replaced meter.

+

HPCl Auxiliary Preventive W.R. #43770 ---

N/A N/A Tested - all ok. Found no problem.. ,

Oil Pump 125 VDC Bus 2B1 Preventive W.R. #43781- N/A N/A Repaired broken insulation.

Cir. 14 LPRM 24-17A Preventive W.R. #43784 N/A N/A Checked and found no problem.LPRM 16-41A Preventive W.R. #43787 N/A N/A Replaced transistor and LPRM card.LPRM 48-41A Preventive W.R. #43788 N/A N/A Placed switch in calibration position.LPRM 32-57A Preventive W.R. f43790 N/A N/A Set high per procedure.

FT2-1542A CCSW Preventive W.R. #43792 ---

N/A N/A Unclogged line.

Flow Trans-mitter LPRM 40-41C Preventive W.R. #43795 N/A N/A Replaced light bulb.

Bypass Light LPRM 56-41A Preventive W.R. #43796 ---

N/A N/A Replaced LPRM amp. board.

Downscale Light LPRM 16-17B Preventive W.R. #43797 N/A N/A Replaced LPRM amp. board.

Downscale Light LPRM 40-41B Preventive W.R. #43798 N/A N/A Repaired pin on socket.

Downscale Light LPRM 56-41C Preventive W.R. #43799 N/A N/A Replaced LPRM amp. board.

Downscale Light I

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUS?. RESULT CORRECTIVE ACTION LPRM 40-57C Preventive W.R. #43800 N/A N/A Checked and found no problem.

Down:cale Light LPRM 48-17D Preventive W.R. #43802 ---

N/A N/A Adjusted per procedure.

Downscale Trip LPRM 16-17D Preventive W.R. #43803 N/A N/A Adjusted low per procedure.

Downscale Trip LPRM 32-33D Preventive W.R. #43804 N/A N/A Adjusted low per procedure.

Downscale Trip LPRM 08-49A Preventive W.R. #43806 ---

N/A N/A Replaced amp. card.

Downscale Light LPRM 32-25D Preventive W.R. #43807 N/A N/A Checked and found no problem.

Downscale Light LPRM 40-57B Preventive W.R. #43808 N/A N/A Repaired contacts in bulb socket.

Downscale Light Containment Preventive W.R. #43809 ---

N/A N/A Replaced resistors and tightened screws.

Atmosphere Pres-sure Switches APRM 6 Cabinet, Preventive W.R. #43822 ---

N/A N/A Adjusted zero balance.LPRM 08-33B LPRM 24-33D Preventive W.R. #43823 N/A N/A Adjusted zero balance.

(APRM 6)LPRM 24-17B Preventive W.R. #43824 ---

N/A N/A Adjusted zero balance.

(APR't 6)LPRM 40-49D Preventive W.R. #43826 N/A N/A Adjusted zero balance.

(APRM 6)

. ._ ~

r ,

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

~ '

MO-1501-3A Preventive W.R. #43827 N/A N/A Changed setting and cycled valve.

MO-1501-3B Preventive W.R. #43828 N/A N/A Changed setting. .

LPRM U-2, Preventive W.R. #43843 N/A N/A Reset alarm.32-25A

  • RE2-1733A Rad Preventive W.R. #43865 N/A N/A Calibrated per' procedure.

III Offgas Moni-tor 203-1D MSIV Preventive W.R. #43912 N/A N/A Changed connection.

HPCI Oil Filter Corrective W.R. #43914 N/A N/A Cleaned filter segments.

"B" 24/28V Battery Preventive W.R. #43931 N/A N/A Cut and installed plywood.

Racks CRD 34-23, J-6 Corrective W.R. #43959 N/A N/A Replaced valve disc.

U-2 2358 HPCI Preventive W.R. #43962 N/A N/A Checked - found no problem.

Flow Indicator SRM #23 Preventive W.R. #43974 N/A N/A Checked - found no problem.

M02-1301-2 Preventive W.R. #43985 N/A N/A Tightened packing gland follower.

Rx Vessel Low- Preventive W.R. #44180 N/A N/A Replaced valve manifold.

Lew Water Level ECCS Yarway A02-1301-17 Preventive W.R. #44240 N/A N/A Tightened packing gland.

Isolation Con- Corrective W.R. #44241 ---

N/A N/A Tightened all nuts on flange.

denser 2-1302

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

~

Isolation Corrective W.R. #44242 N/A N/A Tightened all nuts.

Condrnser CRD 30-7, H-2 Corrective W.R. #44305 N/A N/A Replaced accumulator.

LPCI Logic Dp Preventive W.R. #44363- N/A N/A Checked - found no problem.

Switch 261-34D Manual Valves Corrective W.R. #44396 ---

N/A N/A Replaced manual valves.

2-2301-56 & 57 U-2 Torus Level Preventive W.R. #44400 N/A N/A Repaired transmitter.

Indicator Accumulator J-6 Preventive W.R. #44400 N/A N/A Installed and removed jumper.

RBM Drive Flow Preventive W.R. #44478 N/A N/A Performed procedure to adjust flow.

Converters 2A DG-Statt A/C Preventive W.R. #44534 N/A N/A Adjusted switch.

Pressure Switch 263-73A & B 2/3 Preventive W.R. #44707 N/A N/A Adjusted setpoint.

Core Height Setpoint RBM #7 Preventive W.R. #44756 N/A N/A Replaced quad trip card.

APRM #4 Preventive W.R. #44762 ---

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

RBM #7 Preventive W.R. #44886 N/A N/A Replaced meter and calibrated.

Torus Water Preventive W.R. #44892 N/A N/A- Calibrated recorders.

Temperature Rec.

2-1640-200 A & E

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2C Control Valve Preventive W.R. #44973 ---

N/A N/A Replaced limit switch.

cnd/or Test Circuit .

2A Diesel Preventive W.R. #45292 ---

N/A N/A Adjusted switch.

Dies:1 Generator Comp.

1501-3B MOV Corrective W.R. #45298 N/A N/A Replaced potentiometer.

MOV 2-1501-3B Preventive W.R. #45331 ---

N/A N/A Adjusted feedback.

1501-28A and Preventive W.R. #38819 ---

N/A N/A Reinstalled drain pipe, flange and 1501-27A installed 2 new gaskets.

Dryw ll Equip- Corrective W.R. #38866 ---

N/A N/A Replaced valve handle and nut.

mint Pene. 200B 24/48 VDC 2A Preventive W.R. #41113 ---

N/A N/A Performed inspections.

Bottom Charger Refuel Platform Corrective W.R. #41987 ---

N/A N/A Replaced cable and wired bolts.

Main Steam Line Preventive W.R. #43025 N/A N/A Performed Inspections.

SRV Pipe Support A-D System Mark I Supports Preventive W.R. #43091 ---

N/A N/A Performed all inspections.

(Torus Attach.

Piping)

  1. 2 Diesel Preventive W.R. #43155 N/A N/A Performed inspection.

G:nerator CRD 18-47, E-12 Corrective W.R. #44529 ---

N/A N/A Replaced 0-rings and valve disc.

, - o ..

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JULY,,1985 LER OR' OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

! HCU.14-39 Corrective W.R. #44899 N/A N/A Replaced 0-rings'and valve disc.

Accur.ulator ' Corrective W.R. #45016 N/A N/A Replaced accumulator. .

31 (J-8)

SRM/IRM Pos. Preventive'W.R. #45283- -- . N/A N/A Replaced detector select switch.

- Switch 902-5/ '

702-301 Rx Manual Con- Preventive W.R,. #45285 ---

N/A N/A Replaced relay.

trol Relay 101 CRD L-8 Scram Corrective W.R. #45494 ---

N/A N/A Adjusted scram inlet valve stroke.

- Inlet Valve CRD J-7 (34-23) Corrective W.R. #45552 N/A N/A Changed diaph. - found nothing wrong.

CRD 34-23 Scram Corrective W.R. #45620 N/A N/A Replaced valve disc.

Out. Valve .

CRD J-6, 126 Corrective W.R. #45688 ---

N/A. N/A_ Replaced valve and 0-rings.

Valve _

I

=

  • e DRESDEN UNIT 2/3 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

~

UPS Buttery Preventive W.R. #38775 ---

N/A N/A Cleaned timer - checked ok.

Chr_rgsr (250V)

Rx Building Preventive W.R. #40857 ---

N/A N/A Readjusted jumper pin placement.

Crrne Rossmount Preventive W.R. #42355 ---

N/A N/A Corrected jumper pin placement.

Xmitter Amp.

  1. 73084-12 Rostmount Cali- Corrective W.R. #42424 ---

N/A N/A Removed hold tag - destroyed unit.

brator Card R: fuel Floor Preventive W.R. #43274 ---

N/A N/A Replaced micro switch.

Intirlock Door LPRM Ion Chamber Preventive W.R. #44276 ---

N/A N/A Replaced diode VB2 Powar Supply H2 Monitoring Preventive W.R. #43730 ---

N/A N/A Replaced oxygen cell.

System Panels 2-2252-81 (A and B) 3-2253-81 (A and B)

LPRM Amp. Boards Preventive W.R. #43922 ---

N/A N/A Repaired card.

Accromag Comp. Preventive W.R. #44003 N/A N/A Replaced capacitor.

Isolation Card OTS 3 31 Preventive W.R. #44218 ---

N/A N/A Ca?.Lbrated and certified.

Standby Gas Preventive W.R. #44449 ---

N/A N/A Installed and removed 4 gauges and Treatment Sys. calibrated.

Flow Restricting Orifice

7 * .

k N c O a I r T l C e A u f

E V m I

T o C

r f

E R d R e O v C o m

e r

t n

i a

P T

L 5 U N S A

8 /

9 O E N 1 I R T

, C Y N L U U F 3 J L E

/ A S A 2 - P U /

A N E C T C I N N A U N E

N T E E N G D I A S A T E M UR R OE D D B -

E RM -

T OU -

A N T

R E E R L Y

T 0 E

F A 4 9

S E C 8 N 4 A 4 N 4 E #

T N .

I A R.

M W F e O i v

E t R n U e T v A e N r P

)

s T ee gr N aa E rp M oS P t(

I U S Q s E lk ec ua FR

~ .

DRESDEN UNIT 3 - -

SAFETY RELATED MAINTENANCE - JULY, 1985.

LER OR OUTAGE MALFUNCTION l EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Preventive W.R. #37685 In:tr. Isolation ---

N/A N/A Replaced instrument isolation valve.

Valv:n for PS3-263-55D HPCI Pump Corrective W.R. #38344 N/A N/A Made new gaskets and tightened joints.

Syzt:n 24-48V Top B Corrective W.R. #40903 N/A N/A Adjusted voltage.

Bank Battery Charg:r HPCI Batteries Preventive W.R. #41899 N/A N/A Cleaned.

24-48 Top B, Preventive W.R. #41954 N/A N/A Adjusted float voltage.

Top A and Bot.

B Battery Charger Rod Movement Preventive W.R. #42019 N/A N/A Checked - all ok.

Control Timer Switch HPCI Supp. Pool Preventive W.R. #42432 ---

N/A N/A Reinstalled bolt that had fallen out.

Suction Valve 3-2301-35 ANN 903-3, D-13 Preventive W.R. #42973 ---

N/A N/A Replaced micro switch and lugs.

U-3 250V Battery Preventive W.R. #43292 N/A N/A Adjusted charger.

Chargsr #3 CC3W Flow Trans- Preventive W.R. #43354 N/A N/A Calibrated and checked - looks good.

citter 125 iDC Cround Preventive W.R. #43371 ---

N/A N/A Trouble shot and repaired ground.

.* e DRESDEN' UNIT 3 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION MOV 3-1001-1A Preventive W.R. #43411 N/A N/A Performed EQ inspection.

MOV 3-1001-1 Preventive W.R. #43414 N/A N/A Performed EQ inspection. .

MOV 3-2301-35 Preventive W.R. #43421 N/A N/A Performed EQ inspection.

MOV 3-1501-11A Preventive W.R. #43441 N/A N/A Performed EQ inspection.

MOV 3-1501-3B Preventive W.R. f43443 N/A N/A Performed EQ inspection.

MOV 3-1501-11B Preventive W.R. f43444 N/A N/A Performed EQ inspection.

MOV 3-1501-32B Preventive W.R. #43445 N/A N/A Performed EQ inspection.

SRM #23-750-1B Preventive W.R. #43464 N/A N/A Replaced transistors.

Rx Level Trans. Preventive W.R. #43529 N/A N/A Performed EQ inspection.

LT 3-263-61 Drywell Pressure Preventive W.R. f43532 N/A N/A Replaced switch.

Switch PS3-1628A LPRM 2B 16-33 Preventive W.R. #43574 N/A N/A Performed inspection.

D-2 Limitorques Preventive W.R. f43634 N/A N/A Removed grease zerks - installed pipe plugs.

3-M0-3706 Preventive W.R. f43710 N/A N/A Inspected - all ok.

Exxon Fuel Preventive W.R. f43812 N/A N/A Inspected - all ok.

Storage Canister RBM #7 Preventive W.R. #43813 N/A N/A Performed procedura.

RBM #8 Preventive W.R. f43920 N/A N/A Recalibrated.

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 24/48 Volt Preventive W.R. f43932 N/A N/A Installed plywood to gap.

Battrry Racks I-Inch Orifice Corrective W.R. #44249 N/A N/A Cleaned orifice and installed new Down Stream of gaskets.

3-2301-28, A0 Valve 63B 3-1501-38B Valve Preventive W.R. #44313 --

N/A N/A Cleaned all parts of valve.

"A" R circula- Corrective W.R. #44433 N/A N/A Replaced flange.

tion Pump Suc-tion Decon Flange 125 VDC System Preventive W.R. #44460 N/A N/A Dried and cleaned switch.

U-3 HPCI A0 Corrective W.R. f44465 N/A N/A Replaced separator.

2301-7 Air Filter A0V 220-47 Corrective W.R. #44481 N/A N/A Replaced diaphragm.

MOV 1001-1A Preventive W.R. #44488 N/A N/A Installed grease relief valve.

3-1201-1A Decon Corrective W.R. f44491 N/A N/A Cleaned flange and installed new Flangs gasket.

PS 3-505C Instr. Corrective W.R. #44515 N/A N/A Installed rings and tightened nuts.

Isolation Valve 3-203-2D MSIV Corrective W.R. d44522 N/A N/A Repaired air cylinder.

Rx Scram Levei Preventive W.R. f44543 N/A N/A Calibrated reactor level yarways.

Switches

1 DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - JULY, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 3-202-7A Valve Corrective W.R. f44560 N/A N/A Replaced bolts and Limitorque.

U-3 Diesel Corrective W.R. f44589 N/A N/A Replaced regulator.

Gen retor Strrting Air Regulator REM #7 Preventive V.R. f44630 N/A N/A Replaced nip card and calibrated.

Dryvell High Preventive W.R. #44873 N/A N/A Replaced pressure switch and calibrated.

Pressure Switch 3-1628-B U-3 Diesel Oil Preventive W.R. #44894 N/A N/A Tested - found no problem.

Tx1 Pump Strcanline had Preventive W.R. #45066 N/A N/A Calibrated - found no problem.

Monitor 3-1705-2D Accurulator Corrective W.R. #44902 N/A N/A Installed new accumulator. .

18-11 (E-3) 3A SBLC Pump Corrective W.R. #45240 N/A N/A Cleaned pump.

3C CCSW PP Preventive W.R. #45347 N/A N/A Replaced coil and window splices.

Break r Snubber #45 and Preventive W.R. f45427 N/A N/A Swapped rear adapters with each other.

f46 Accumulator H-ll Preventive W.R. #45771 ---

N/A N/A Inspected and cleaned accumulator.

M132/HV-17 Preventive W.R. #43246 ---

N/A N/A Tested - all ok.

Spring Hanger LPRM 3C 40-25

r

(

[ct .

i e

SUMMARY

OF OPERATING EXPERIENCE UNIT TWO JULY, 1985 07-01-85 to 07-29-85 Unit 2 entered the month operating at a power level of 680 MWe and operated until 1753 hours0.0203 days <br />0.487 hours <br />0.0029 weeks <br />6.670165e-4 months <br /> of July 27th when a Rx automatic scram occurred because of high level in the SDV. The Rx was made critical on July 28th, at 1006 hours0.0116 days <br />0.279 hours <br />0.00166 weeks <br />3.82783e-4 months <br /> and the unit was placed in service at 0638 hours0.00738 days <br />0.177 hours <br />0.00105 weeks <br />2.42759e-4 months <br /> of July 19th.

07-29-85 to 07-31-85 The unit operated the remainder of the month steadily increasing power to a level of 686 MWe with a capacity factor of 86.36% and an availability factor of 95.06%.

l _: o ,

e_ -

SUMMARY

OF OPERATING EXPERIENCE UNIT THREE JULY, 1983 07-01-85 to 07-31-85 Unit 3 operated continuously the entire month of July, 1985 (with normal power reductions for week-end surveillances) and on the 30th and 31st of the month a problem developed with the "A" recircula-tion pump which necessitated single loop operation.

The unit reached a power level of 797 MWe with a capacity factor of 85.15% and an availability of 100%.

t ,

l L

a Commonwealth Edison

. Dresden Nuclear Power Station R.R. 01 Morris, Illinois 60450 Telephone 815/942-2920 August 1, 1985 DJS LTR: 85-806 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.

Sincerely, D.bl. Scott Station Manager Dresden Nuclear Power Station 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.

Comptro11er's Office P1P Coordinator INPO Records Center File /NRC Op. Data j File / Numerical ,

  1. I l
Retrieved from "https://kanterella.com/w/index.php?title=ML20134G672&oldid=2873971"