ML20072N065
| ML20072N065 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/01/1983 |
| From: | Schroeder B, Scott D COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| 83-663, NUDOCS 8307150194 | |
| Download: ML20072N065 (24) | |
Text
_ _ _ _ _
OPERATING DATA REPORT DOCKET NO. 050-237 DATE July 1, 1983 COMPLETED BY B. A. Schrceder TELEPHONE (815) 942-2920 OPERATING STATUS NOTES 1.
Unit Name:
Dresden II 2.
Reporting Period:
June, 1983 3
Licensed Thermal Power (MWt):. 2,527 4.
Nameplate Rating (Gross MWe):
828 5.
Design Electrical Rating (Net NWe): 794 6.
Maximum Dependable Capacity (Gross MWe):
812 7
Maximum Dependable Capacity (Net MWe):
772 8.
If Changes Occur in Caoacity Ratings (Items 3 Through 7) Since Last Report, Give l
Reasons:
)
N/A 9
Power Level to Which Restricted, if Any (Net MWe):
N/A 10.
Reasons For Restrictions, if Any:
N/A l
This Month Yr-to-Date Cumulative.
11.
Hours in Reporting Period 720 4,343 115,103 12.
Number of Hours Reactor Was Critical 430.9 1,440.9 88.299.7 13 Reactor Reserve Shutdown Hours 0
0 0
14.
Hours Generator On-Line 332.s 1.307. 0 87.127.1 15.
Unit Reserve Shutdown Hours 0
0 0
16.
Gross Thermal Energy Generated (HWH) 677.761 2.559,165 168.040.674 17 Gross Electrical Energy Generated (MWH) 212,344 813,323 53.701.589 18.
Net Electrical Energy Generated.(MWH) 196.462 756.639 50.751.829 19 Unit Service Factor 46.2 30.
75.7 20.
Unit Availability Factor 46.1 30.'
75.7 21.
Unit Capacity Factor (Using MDC Net) 35.3 22.6 57.1 22.
Unit Capacity Factor (Using DER Net) 34.4 21.9 55.5 i
23 Unit Forced Outage Rate 53.1 24.5 11.5 24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
N/A 25 If Shut Down At End Of Reoort Period, Estimated Date of Startup:
7-15-83 1
i 8307150194 830701 PDR ADOCK 05000237 R
OPERATING DATA REPORT DOCKET NO.
050-249 DATE July 1, 1983 COMPLETED BY B. A. Schroeder TELEPHONE eg,q g47 797n OPERATING STATUS 1.
Unit Name:
Dresden III 2.
Reporting Period:
June, 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):
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 720 4,343 104,688 12.
Number of Hours Reactor Was Critical 674.5 4,246.3 80,637.0 13 Reactor Reserve Shutdown Hours 0
0 0
14.
Hours Generator On-Line 640.8 4,198.6 77.656
"~
15 Unit Reserve Shutdown Hours 0
0 0
16.
Gross Thermal Energy Generated (MWH) 1.257.412 9,630,547 155.892.287 17 Gross Electrical Energy Generated (MWH) 395,676 3,119,026 50.684,157 18.
Net Electrical Energy Generated.(MWH) 371,215 2.970,468 48,053,113 19 Unit Service Factor 89.0 96.7 74.2
, 20.
Unit Availability Factor 89.0 96.7 74.2 21.
Unit Capacity Factor (Using MDC Net) 66.7 88.5 59.4 22.
Unit Capacity Factor (Using DER Net) 64.9 86.1 57.8 23 Unit Forced Outage Rate 11.0 3.3 13.0 l
24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
Refueling outage commencing the latter part of October, 1983.
I 25 If Shut Down At End Of Report Period, Estimated Date of Startup:
N/A l
l
DOCKET NO. 050-237 UNIT NAME Dresden 11 UNIT SHUTDOWNS AND POWER REDUCTIONS DATE July 1.
1983 COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920 REPORT MONTil June, 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 3
83-6-3 F
21.1 A
4 Packing leak on Steam Line Test valve - repacked (reactor remained critical).
4 83-6-10 F
9.3 A
4
- 1 Turbine Control Valve found shut. Repaired.
(Reactor remained critical.)
5 83-6-!!
F 16.1 A
3 liigh vibration on main turbine.
Repaired vibration instrumenta-tion.
6 83-6-12 F
33.2 A
4
- 3 Turbine Control Intercept valve malfunction. Repaired.
(Reactor remained critical.)
7 83-6-17 F
61.1 A
1 Nitrogen leakage into drywell containment. Repaired.
8 83-6-20 F
24 1.4 A
3 Fire in main generator / excitor slip ring area - undergoing repairs remainder of month.
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)
E-Operator Training & License Examination F-Administrative a
G-Operational Error H-Other (Explain)
DOCKET NO. 050-249 UNIT NAME nrordon TTT UNIT SHUTDOWNS AND POWER REDUCTIONS DATE July 1, 1983 COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920 REPORT MONTH June, 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 CODES PREVENT RECURRENCE 3
83-6-1 F
12.2 A
3 Failed Feedwater Regulating valve - repaired.
4 83-6-4 F
13.8 A
3 Loss of main generator field.
Repaired protective system for generator.
5 83-6-6 F
23.1 G
3 MSIV's went closed. Jumpers not properly installed.
6 83-6-23 F
10.9 B
3 Reactor scrammed on low water level due to "C" feed pump being tripped during breaker testing. Breaker trip wiring being checked for possible wiring error.
7 83-6-29 F
19.3 H
3 While surveillance testing of a pressure switch on the MSL's was being performed a different pressure switch dropped out because of vibration and scrammed the Rx.
d 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)
E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Explain)
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-237 UillT II DATE July 1, 1983 COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920 MONTH June, 1983 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1 754 17 198 2
726 18 0
3 10 19 0
4 464 20 322 5
619 21 0
6 732 22 0
7 776 23 0
8 774 24 o
9 782 25 0
l 10 227 26 0
11 118 27 0
12 21 28 0
l 13 144 29 0
14 474 30 0
15 565 31 16 694
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249 UNIT III DATE July 1, 1983 1
COMPLETED BY B. A. Schroeder TELEPHONE (815) 942-2920 MONTH June, 1983 DAY AVERAGE DAILY POWER LEVEL DNr AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1 668 17 711 2
215 18 696 3
557 19 695 4
155 20 717 5
447 21 635 6
466 22 677 7
48 23 358 8
4 16 24 384 9
333 25 494 10 445 26 655 11 525 27 718 12 681 28 701 13 723 29 307 14 711 30 292 15 716 31 16 702 1
~
DRESDEM UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 MSIV Preventive W.R. # 21949 N/A N/A Repacked valve and lubricated guides EPN 2-203-1B and stem.
Torus Hatches Preventive W.R. #26057 N/A N/A Removed and installed gaskets.
2-220-47 Head Preventive W.R. #26970 N/A N/A Tightened bolts and diaphgram.
Vent EPN 2-220-47 2A S/D Cooling Preventive W.R. //26844 N/A N/A Tested breaker.
Pump Isolation Preventive W.R. #26841 N/A N/A Adjusted packing.
Condenser Drain Valve EPN 2-1301-31
& 32 2B Electro-Preventive W.R. #25797 N/A N/A Replaced Electromatic pilot valve.
matic EPN 2-203B Unit 2 MSIV Preventive W.R. #24631 N/A N/A Removed and tested operator.
203-2C EPN 2-203-2C CRD Return Preventive W.R. #26837 N/A N/A Adjusted packing.
Line Valve EPN 2-0309-94 D-2 MSIV-1-D Preventive W.R. #27134 N/A N/A Replaced gasket on Air Operator.
EPN 2-203-ID CRD F-1 (22-03: Preventive W.R. #27074 N/A N/A Bench tested valve, w
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE FIALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION HPCI Gland Preventive W.R. #25227 N/A N/A Replaced breaker and operating mechanism.
Seal Exh.
Breaker CRD D-2 Preventive W.R. #26947 N/A N/A Replaced Solenoid valve.
Unit 2 HPCI Preventive W.R. #27332 N/A N/A Adjusted Limit switch.
Turning Gear Unit 2 ID MSIV Preventive W.R. #27193 N/A N/A Replaced and adjusted Limit switch.
EPN 2-203-ID Torus Vacuum Preventive W.R. #25166 N/A N/A Removed and reinstalled cover and disc.
Breaker Vacuum Breaker Preventive W.R. #26786 N/A N/A Inspected and adjusted vacuum breaker.
2-1601-33D Vacuum Breaker Preventive W.R. #26781 N/A N/A Inspected and adjusted vacuum breaker.
Vccuum Breaker Preventive W.R. #26779 N/A N/A Inspected and adjusted vacuum breaker.
Vac tum Breaker Preventive W.R. #26782 N/A N/A Inspected and adjusted vacuum breaker.
2-1601-32D Vacuum Breaker Preventive W.R. #26785 N/A N/A Inspected and adju ted vacuum breaker.
2-1601-33C M02-1601-61 Preventive W.R. #27077 N/A N/A Repacked valve.
Valve EPN MO-2-1601-61 Vacuum Breaker Preventive W.R. #26783 N/A N/A Inspected and adjusted vacuum breaker.
2-1601-33A Pipe Hanger Preventive W.R. #26512 N/A N/A Replaced missing hanger nut.
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION D-2 Rx Head Preventive W.R. #21937 N/A N/A Replaced Rx head.
Core Spray Preventive W.R. #26740 N/A N/A Tightened union.
Check Valve EPN 2-1402-9A Inctrument Preventive W.R. #26922 N/A N/A Repaired handle to insure valve operation.
Isolation Valve Handle Steam Line Preventive W.R. #26756 N/A N/A Adjusted wipe on Limit switch. Operating Drain Valve ok.
220-1 Accum. 58-23 Preventive W.R. #27092 N/A N/A Removed and replaced broken tubing.
Pilot Air Line Unit 2 West Preventive W.R. #26680 N/A N/A West manway opened.
Torus Manway Equipment Preventive W.R. #26055 N/A N/A Equipment hatch closed.
Hatch 2C-MSIV-U2 Preventive W.R. #27170 N/A N/A Rebuilt Air Operator cylinder and EPN 2-203-2C U-cups.
Unit 2 Torus /
Preventive W.R. #21658 N/A N/A Performed Lift Force test.
Drywell Vacuum Breakers Discharge Iso-Preventive W.R. #25514 N/A N/A Tightened packing.
lation Valves' EPN 2001-105 &
106
-~
DRESDEN UNIT 2 SAFETY RELATED 11AINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MAI. FUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Torus to Dry-Preventive W.R. #24820 N/A N/A Removed and replaced disc and stem, well Vacuum Breaker EPN 2-1601-32C Torus Vacuum Preventive W.R. #25165 N/A N/A Removed and replaced counter weight arm.
Breaker EPN 1601-33B MO 2-3706 Preventive W.R. #24164 N/A N/A Replaced valve operator.
EPN 2-3706 Unit 2 CRD Preventive W.R. #26710 N/A N/A Tightened CRD flanges found leaking per Systems work request.
EPN 300 CRD (Spare Preventive W.R. #21898 N/A N/A Leak test drives for CRD replacement.
Drives)
Class 2 Welds Preventive W.R. #23013 N/A N/A Prepared welds for ISI P.T. inspection.
2A MSIV Test Preventive W.R. #27331 N/A N/A Replaced switch contact block.
Switch D-2 Feedwater Preventive W.R. #27056 N/A N/A Dismantled and cleaned internals of Check Valve valve.
EPN 2-220-58A Main Steam Preventive W.R. # 26733 N/A N/A Repaired broken drain line.
Safety Valve EPN SV-2-203-4A Unit 2 East Preventive W.R. #24817 N/A N/A Closed East torus manway.
Torus Manway i.,.......
DRESDEN UNIT 2 SAFETY RELATED IIAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT I!AINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION MO 2-202-7A Preventive W.R. #24170 N/A N/A Replaced valve operator.
EPN 2-202-7A MO 2-202-7B Preventive W.R. #24168 N/A N/A Replaced valve operator.
EPN 2-202-7B CRD Hatch Preventive W.R. #27073 N/A N/A Opened and closed hatch.
Unit 2 West Preventive W.R. #26887 N/A N/A Opened and closed West torus hatch.
Torus Hatch CRD S/N #8 Preventive W.R. #27180 N/A N/A Replaced internal and external seal rings.
Rafuel Grapple Preventive W.R. #26304 N/A N/A Installed new gasket.
Unit 2 TIP Preventive W.R. #22004 N/A N/A Removed and installed pipe plugs.
Indexers Refuel Hi Rad Preventive W.R. #27076 N/A N/A Replaced relay.
Trip EPN 1705-105 MSIV Air Preventive W.R. #27109 N/A N/A Installed new air cylinder and piston Cylinder seal.
EPN 2-203-IC Target Rock Preventive W.R. #27228 N/A N/A Removed and installed gasket on pilot Bellows Leak adjustment cap.
Press Switch D2 Feedwater Preventive W.R. #27055 N/A N/A Cleaned valve.
Check Valve EPN 2-220-58B
DRESDEN UNIT 2 i
SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION l
EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CRD Accum.
Preventive W.R. #26865 N/A N/A Replaced valve.
48-23 Vacuum Breaker Preventive W.R. #26780 N/A N/A Adjusted disc for proper seating.
2-1601-32B LPRM 24-33D Preventive W.R. #26628 N/A N/A Tested cable and detector.
(CH #6)
Unit 2 HPCI Preventive W.R. #14664 N/A N/A Reinstalled conduit.
2301-3 EPN 2-2301-3 2-1201-3 Valve Preventive W.R. #21812 N/A N/A Repacked valve.
EPN 2-1201-3
, MO Valve Preventive W.R. #26534 N/A N/A Tightened packing.
! EPN 2-1402-24A
, 2A Target Rock Preventive W.R. #21878 N/A N/A Replaced pilot valve on target rock.
l EPN 2-203-A Unit 2 Safety Preventive W.R. #21890 N/A N/A Removed and installed gages on Valves safety valves.
- Unit 2 MSIV Preventive W.R. #21948 N/A N/A Repacked valve, lubricated guides and
! EPN 2-203-ID stem.
I Unit 2 MSIV Preventive W.R. #21946 N/A N/A Repacked valve, lubricated guides and EPN 2-203-2D stem.
i HPCI Testable Preventive W.R. #21924 N/A N/A Repacked _ valve.
EPN 2-2301-7 Unit 2-MSIV Preventive W.R. #2.947 N/A N/A Repacked valve, lubricated guides and EPN 2-203-IC stem.
l
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Rx Bldg. Vent Preventive W.R. #22208 N/A N/A Replaced valve.
Exchange D mper EPN 2B-5742 Unit 2 CRD Preventive W.R. #26726 N/A N/A Retorqued CRD flanges.
Torus Vacuum Preventive W.R. #27276 N/A N/A Replaced gaskets.
Breaker In:talled and Preventive W.R. #26847 N/A N/A Reinstalled wire and cleared jumper log.
removed jumpers 202 7A & B EPN 2-202-7A
& 7B Unit 2 SRM and Preventive W.R. #21999 N/A N/A Inspected drive motor modules and checked IRM Drive oil.
Motors Equipment Drain Preventive W.R. #26056 N/A N/A Removed covers.
and Floor Drain SRM 21 Preventive W.R. #21604 N/A N/A Inspected and repaired as necessary.
EPN RM2-750-1A D/W Isol. Valvt Preventive W.R. #24419 N/A N/A Rebuilt air cylinder.
EPN 2-1601-60 Icolation Preventive W.R. #25720 N/A N/A Operated valve and measured stroke.
Condrnser MO 1301-3 LPCI Logic Preventive W.R. #24712 N/A N/A Adjusted normally closed contact.
R31ay 1530-207
DRESDEN UNIT 2 1
SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUM13ER CAUSE RESULT CORRECTIVE ACTION Unit 2 480 V Preventive W.R. #25501 N/A N/A Installed and removed jumpers to perform Bus Nos. 25, inspection.
26, 27, 28, 29 125 VDC Bus Preventive W.R. #25978 N/A N/A Inspected, repaired and tested cells No.
9 and 25.
2-1402-4 A Preventive W.R. #26935 N/A N/A Replaced motor, set limits and cycled Test Valve valve.
2 "B" RPS MG Preventive W.R. #26197 N/A N/A Inspected and repaired as necessary.
Set 2-1201-2 Valve Preventive W.R. #21811 N/A N/A Replaced pressure bonnet seal ring.
2-1402-25B Preventive W.R. #26571 N/A N/A Replaced breaker, checked for proper Core Spray valve operation and adjusted limits.
Discharge Velve Control Rod Preventive W.R. #26798 N/A N/A Tightened flanges and packing.
Drive Hydrau-lic Accumu-litor A.O.
Velves EPN CV-2-305-126 & 127 Unit 2 250 V Preventive W.R. #27001 N/A N/A Inspected and repaired.
Battery Charger Cl1 Scram Preventive W.R. #26493 N/A N/A Adjusted limit switch actuator.
Valves Limit Switch
DRESDEM UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2B LPCI Pump Preventive W.R. #26604 N/A N/A Adjusted time delay relay.
Und3rvoltage e
Start Sequence Timer Unit 2 MOV Preventive W.R. #25575 N/A N/A Replaced missing brush inspection cover 2301-10 and cleaned commulator.
APRM #6 Preventive W.R. il24650 N/A N/A Readjusted rod block.
2B LPCI Heat Preventive W.R. #25943 N/A N/A Plugged tubes.
Exchanger EPN #2B-1503 Unit 2 A0V Preventive W.R. #26533 N/A N/A Repaired air supply valve.
2301-7 EPN 2-2301-7 Drywn11 Vent Preventive W.R. #26236 N/A N/A Replaced vent valve.
Valve 2-1601-23 West Torus Preventive W.R. #27197 N/A N/A Closed hatch.
Hatch 2C SDC PP Preventive W.R. #27190 N/A N/A Inspected breaker and cubicle -
Break r lubricated.
EPN #2C-1002 Unit 2 MSIV Preventive W.R. #21943 N/A N/A Repacked valve and lubricated valve stem.
EPN 2-203-2A LPRM 24-33B Preventive W.R. #26627 N/A N/A Repaired cable and checked for proper (CH #4) operation.
DRl2: DEN UNtr 2 SAFETY l' ELATED it A Iin ENMu:M - JUNE, 1983 NATURE OF LER OR OUTAGF U^I'EU" IUN EQUIPMENT MAINTENANCE NUtIDER CAUSI:
!!ESULT CORRECTIVE ACTION MSL Hi Flow Preventive W.R. #26676 N/A N/A Inspected switch movement and checked Switch for proper operation.
261-2A-2S Unit 2 Scram Preventive W.R. #26667 N/A N/A Repaired air regulator.
Air Header Presure Regu-lator EPN PRV2-4711 -
B SRM 22 Preventive W.R. #26194 N/A N/A Replaced K6B relay, functionally tested and verified half-scram operation.
M0 1501-3B Preventive W.R. #27455 N/A N/A Inspected and repaired.
EPN 2-1501-3B Unit 2 250 V Preventive W.R. #26237 t*/A N/A adjusted float and equalize voltages to Bnttery proper setting.
Charger 2-1601-60 Preventive W.R. #25525 N/A N/A Repaired and replaced limit switch actuator.
Unit 2 Scram Preventive W.R. #24768 N/A N/A Repaired all leaks.
Air Header Unit 2 Elec-Preventive W.R. #22014 N/A N/A Realoved, repaired and reinstalled electro-tromatics matic operators.
EPN 2-203-3 MOV 1402-25B Preventive W.R. #25802 N/A N/A Reset breaker setting.
Rx Livel Lo Lo Preventive W.R. #23440 N/A N/A Replaced equalizing block valve.
Water Level ECCS EPN 2-263-72D
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTACE MALFUNCTION PQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CCSW Testable Preventive W.R. #26297 N/A N/A Tightened packing and resealed leaks Wall Penetra-with R.T.V.
tiona lA Inboard Preventive W.R. #26654 N/A N/A Repaired air leak.
MSIV 2-2301-5 Preventive W.R. #21833 N/A N/A Repacked and adjusted.
EPN 2-2301-5 Unit 2 West Preventive W.R. #21654 N/A N/A Closed manway.
Torus Manway Unit 2 MSIV Preventive W.R. #21944 N/A N/A Adjusted and replaced r'-king, lube stem EPN 2-203-2B and cleaned lube guide.
Unit 2 MSIV Preventive W.R. #21945 N/A N/A Adjusted and replaced packing, lube stem EPN 2-203-2C and cleaned.
Unit 2 HPCI P eventive W.R. #25571 N/A N/A Inspected oil piping in oil tank.
5 2D Electro-Preventive W.R. #22438 N/A N/A Removed and replaced electromatic.
matic EPN 2-203-D Unit 2 HPCI Preventive W.R. #21587 N/A N/A Repacked coupling.
Turbine EPN 2-2301 2C Electro-Preventive W.R. #21951 N/A N/A Replaced electromatic, matic EPN 2-203-C HPCI Logic Preventive W.R. #25687 N/A N/A Inspected and repaired.
T.D. R:alay EPN 2330-102A-1
=i
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTAGE MAI' FUNCTION EQUlPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Unit 2 Turbine Preventive W.R. #22015 N/A N/A Inspected all limit switches on all Valve Unit 2 turbine valves.
Unit 2 250 V Preventive W.R. #26021 N/A N/A Inspected and repaired.
Bittery Charger Unit 2 SRM and Preventive W.R. #22010 N/A N/A Lubricated drive tubes.
IRM Drives Unit 2 Elec-Preventive W.R. # 16291 N/A N/A Removed and reinstalled E electromatic.
tromatic EPN 203-E U-2125 VDC Rx Preventive W.R. #27230 N/A N/A Found wire pinched in cubicle. Tied Bus CK #2 back wire and ground cleared.
D2 Dryvell Preventive W.R. #27057 N/A N/A Dismantled bypass valve and cleaned Vent Bypass internals.
Valve 2-1601-61 Drywell Torus Preventive W.R. #20169 N/A N/A Repacked valve.
Valve Breaker EPN 1601-33C 2-1A MSIV Preventive W.R. #22061 N/A N/A Rebuilt pilot valve assembly.
EPN 2-203-IA 2-1699-56B Preventive W.R. #27121 N/A N/A Disassembled, inspected and reassembled Valve valve per NRC.
Unit 2 MOV Preventive W.R. #25125 N/A N/A Removed and reinstalled electric feed 1402-38B to MOV.
DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - JUNE, 1983 NATURE OF LER OR OUTACE
!!AI. FUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION D-2B-C-D-E Preventive W.R. #24985 N/A N/A Installed and removed gags and blank-flanges for D2 refuel outage.
, MO 2-1501-3B Preventive W.R. #24165 N/A N/A Replaced limitorque operator.
EPN M02-1501-3B I
Unit 220-2 Preventive W.R. #21880 N/A N/A Lubricated stem and adjusted packing.
EPN 2-220-2 2-2001-5 Valve Preventive W.R. #27122 N/A N/A Disassembled, inspected and reassembled EPN 2001-5 valve.
Accum. 14 -07 Preventive W.R. #27212 N/A N/A Replaced solenoid.
Fuel' Pool Preventive W.R. #27227 N/A N/A Replaced relay.
Channel B Rad Monitor ID MSIV Preventive W.R. #26662 N/A N/A Repaired air leak on MSIV.
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DRESDEN UNIT 3 SAFETY RELATED MAlf1TEl:At:CE - JUNE, 1983 NATURE OF LER OR OUTAGE MAI. FUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION CRD K-7 Scram Preventive W.R. #27163 N/A N/A Repaired leaking valve.
Outlet Valve EPN 3-0305-127 CRD 38-27 Preventive W.R. #27079 N/A N/A Adjusted scram outlet valve.
CK-77 Isolation Preventive W.R. #25721 N/A N/A Adjusted limit switch.
Condenser MO 1301-3 Unit 3 "A" 4
Prevent.ve W.R. #26334 N/A N/A Replaced light bulb.
ATWS Inverter LPCI Pump B Preventive W.R. #26998 N/A N/A Inspected and repaired pressure switch.
Discharge P.S.
EPN 3-2203-19A Unit 3 ACAD Preventive W.R. #25839 N/A N/A Adjusted regulator.
Air Compressor EPN 3-2540-012 3A Main Steam Preventive W.R. #26998 N/A N/A Inspected and repaired pressure switch.
Line Rad Moni-tor EPN 3-2203-19A Unit 3 ACAD Preventive W.R. #25839 N/A N/A Adjusted regulator.
Air Compressor EPN 3-2540-012 3A Main Steam Preventive W.R. #26969 N/A N/A Installed spare monitor.
Line Rad Monitor EPN 3-3001-20-B a
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SUMMARY
OF OPERATING EXPERIENCE UNIT TWO JUNE, 1983 06-01 to 06-04 Unit 2 entered the month operating at a power level of 770 MWe. On the 3rd, the unit was shutdcwn (Rx remained critical) to repair a steam packing leak on a small valve in the x-area.
06-04 to 06-10 Following repair of the valve the unit was returned to power and operated until the 10th when a problem with the #1 CIV developed and the unit was again taken off the line.
06-10 to 06-11 Following repair of the CIV, the unit was returned to service and load was being steadily increased when high vibration caused the main turbine to be tripped and the resultant high flux scrammed the Rx.
06-11 to 06-12 After repair of the turbine vibration instrumentation, the unit was again made critical and brought on the line until the 12th, when a problem with the #3 CIV developed and the unit was taken off the line -- the Rx remained critical.
06-12 to 06-17 After repair of the CIV, the unit was returned to service and operated until the 17th when a nitrogen leak was dis-covered and the unit was manually shutdown and repairs effected.
06-17 to 06-30 The unit was returned to service and was operating on the 20th, when arcing and a resultant fire on the generator collector rings caused a turbine trip and Rx scram. The L.
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SUMMARY
OF OPERATING EXPERIENCE (Continued)
UNIT TWO JUNE, 1983 06-17 to 06-30 unit is still in the shutdown mode and will remain in this (Continued) condition until approximately July 15, 1983. Capacity factor for the month was 35.36% and availability was 46.94%.
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SUMMARY
OF OPERATING EXPERIENCE UNIT THREE JUNE, 1983 06-01 Unit 3 entered the month operating at a power level of 770 MWe but shortly thereafter a Rx scram occurred because of a failed feedwater reg. valve.
06-02 to 06-04 The valve was repaired and the unit was placed in service and operated until the 4th when a Rx scram occurred because of generator load reject when a 86 device failed.
06-04 to 06-06 The breaker was repaired and the unit was brought on line and operated until the 6th, when the MSIV's went closed and scrammed the Rx because the MSIV jumpers were not properly installed.
06-07 to 06-23 The unit was placed in service and operated until the 23rd when a low water signal caused the Rx to scram. This occurred while testing was being done on breakers and wiring to the breakers.
06-24 to 06-29 The unit was brought on line and operated until the 29th when the Rx scrammed while surveillance testing of the MSL pressure switches was being performed.
06-29 to 06-30 The unit was again placed in service and ended the month operating at a power level of 430 MWe with a capacity factor of 66.05% and an availability of 89.00%.
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O Telephone 815/942-2920 Commonwealth Edison Dresden Nucte:r Power St; tion R.R. #1 Morris, Illinois 60450 July 1, 1983 DJS LTR: 83-663 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, 2 9 NC' D
J. Scott Station Superintendent Dresden Nuclear Power Station DJS: BAS: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 Statistical Research l
Manager, Tech. Serv. Nuc. Sta.
l Tech. Staff EA On-Site NRC Inspector Sta. Nuc. Eng. Dept.
PIP Coordinator - Sta. Nuc.
l Comptroller's Office INPO Records Center l
File /NRC Op. Data File / Numerical Nuclear Sta. Div. Vice Pres j
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