ML17174A161

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Monthly Operating Rept for Oct 1979
ML17174A161
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 11/03/1979
From: Cieszkiewicz S
COMMONWEALTH EDISON CO.
To:
Shared Package
ML17174A160 List:
References
NUDOCS 7911190308
Download: ML17174A161 (20)
v • d • e


Text

*-~"T--~---**----*-**-

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-~...... --------**..... -.. -~**-.. -*-..*<"<-**---***--- ---***

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I AVERAGE DAILY UNIT POWER LEVEL MONTH OCTOBER, 1979 DAY 2

5*

6 7

a*

9 10 11 12 13 14 15 16 AIJERAGE DAI LY PO\\/ER LEVEL DAY (HWe-:-Net) a 17 0

. 18 0

  • 19 0

20 0

. 21 0

22

,o 23 0

24 0

25 0

26 0

27 0

23 0

29 0

30 0

31 DOCKET NO~ 050-010 Ull IT Dresden* I DATE November 3, 1979 COMPLETED BY S. !\\.. Cieszkiewicz TELEPHO~E (815) 942-2920 AVERAGE DAI LY PO\\./ER LEIJEL (MHe-Ne t) 0 0

  • O 0

0 0

0 0

0 0

0 0

0 0

0 7911190 30?

I

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 AVERAGE DAILY UHIT POWER LEVEL DOCKET NO. 050-237 Ull IT Dresden II DATE November 3, 1979 COMPLETED BYS. A. Cieszkiewicz

- TELEPHO~E (815) 942-2920

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249 Ufl IT Dresden III DATE November 3, 1979 COMPLETED 8Y S. A. Cieszkiewicz TELEPHONE (815) 942-2920 MOtHH OCTOBER, 1979 DAY

  • AVERAGE DAILY PO\\.iER LEVEL DAY AVERAGE DAI LY PO\\./ER LEVEL (M\\fo'."'Net)

(MHe-Net) 523 17 526 2

525

. 18 526 3

523

  • 19 528 4

526 20 523 5

527 21 525 6

521 22 525 7

528-23 526 8

469 24 527 9

511 25 522 10

  • 522 26 152 11 514 27 378 12 508 23 438*

13 528 29 497 14 513 30 525 15 519 31 16 526

  • Time change - add l* br.* __ *-

("*

c-.

OPERATING DATA REPORT OPE RAT I f*JG STATUS Unit Narne: Dresden I Reporting Period:.,,....,.o~c~t~o~b~e~r~._.,..1~9~7~9----------~

Licensed The rma 1 Power (HWt) : 700 Nameplate Rating (Gross MWe) :_2_0_9 _________ _

Design Electrical Rating (Net M\\.Je): 20.Q Maxi mum Dependable Capacity (Gross -M""'\\./""'e..,f-: _2_0_5 ____ _

~-"'-------

DOCKET NO. 050-010 DATE November 3, 1979 COMPLETED BY S. Cies_zkiewicz TELEPHONE (815) 942-2920 NOTES

l.
2.
3.
4.
s.
6.

].

8.

Maximum Dependable Capacity (Net M\\.Je): 197 If Changes Occur in Capac"ity Ratings..,.(-=1""'te..:..m-s ___ 3_...,.T..,..h_r_o_ug_h_ 7) Since Last Report, Give Reasons:

NA

9.

Power Level to\\./hichRestricted, If Any (NetMWe):

NA

~

10.

Reasons For Restrictions, If Any:

NA

--""=------------------------

This Month Yr-to-Date Cumulati.'lC.

11.

Hours in Reporting Period 745 7226 171. 336

12.

Number of Hours Reactor Was Critical 0

0 113, 153. 75

13.

Reactor Reserve Shutdown Ho~rs 0

0 0

14.

Hour.s Generator On-Line 0

0 111.196.15

15.

Unit Reserve Shutdown-Hours 0

0 0

16.

Gross Thermal Energy Generated (MWH) 0 0

56,014.747.15

17.

Gross Electrical Energy Generated (M\\m) 0

1. 20 16,799.254.19
18.

Net Electrical Energy Generated (MWH)

-11 145. 1

-111 705. J 151811.168.62

19.

Unit Se.rvice *Factor 0

0 65.2

20.

Unit Availability Factor 0

0 65.2 2 I.

Unit Capacity Factor (Using. MDC Net) 47 1

22.

Unit Capacity Factor (Using DER Net) 0 0

46,J

23.

Unit Forced Outage Rate 0

0

11. J
24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

NA

25.

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

N_A _____ _

~........ _ *.

---*---~-**

' \\

c OPERATING DATA REPORT DOCKET NO. 050-237

__,.------~

DATE November 3, 1979 COMPLETED BYS. Cieszkiewicz TELEPHONE (815) 942-2920 OPERAT lr~G STATUS t~OTES

1.

Unit Name: Dresden II

__,.--------.,....,,..----------~

2.

Reporting Period: October, 1979

3.

Licensed Therma 1..,,..P_o_w_e_r-,-(H-W-=-t-.)..-: -2,,........,,5"'"'2"""7,,.._--------

4, Nameplate Rating (Gross M\\.Je):

828

--.----------~

5.

Design Electrical Rating (Net M\\ve): 794 6.* Maximum Dependable Capacity (Gross~M~\\v~e~)-:-8_1_2----~

7.

Maxi mum Depend ab 1 e Capacity (Net M\\~e) :............. 7.... 7... 2-----

8.

If Changes Occur *in Capadty Ratings (Items 3 Through 7) Since Last Report, Give Reasons:

NA

9.

Power Level to \\vhich Restricted, If Any (Net MWe):

NA

~

10.

Reasons For Rest*rictions, If Any:

.....J.:LC!.-----------------------~

This Month Yr-to-Date C umula t i. 'le.

11.

Hours in Reporting Period 745 7.296 82,99?

12.

Number of Hours Reactor Was Critical 566.2 5 863 63,308.2

13.

Reactor Reserve Shutdown Hou.rs O

O O

14.

Hours Generator On-Line 543.17 5, 750.1 59.867

15.

Unit Reserve Shutdown* Hours 0

O O

16.

Gross Thermal Energy Generated (MWH) 1,270.720 12.869.495 118,342,135

17.

Gross Electrical Energy Generated (MWH) 413.394 4.142,434 37,937,158

18.

Net Electrical Energy Generated (MWH) 391,522 3,920,480.853 35,868.962.426

19.

Unit S~rvice Factor 72.9 78.8 72.1

20.

Unit Availability Factor 72.9 78.8 72.1

21.

Unit Capacity Factor (Using MDC Net) 68.1 69.6 56

22.

Unit Capacity Factor (Using DER Net) 66.2 67.7 54.4

23.

Unit Forced Outage Rate

3. 3
3. 7
13. 8
24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each None

25.

If Shut Down At End Of Report Period, Estimated-Date of Startup:......:..;.NA;.:._------

( __.

OPERATING DATA REPORT

\\

DOCKET NO. 050-249 DATE November 3, 1979 COMPLETED BYS. Cieszkiewiez TELEPHONE (815) 942-2920

,OPERATltJG STATUS NOTES

1.

Unit Name:

Dresden III

--=:-=-...-..-=--------------------~

2.

Reporting Period: October, 1979

3.

Li cens ed The rma 1 _P_o_w_e_r__,.(-HW..__t.--) -: 2_5_2_7 _________ _

4.

Nameplate Rating (Gross MWe):

828

--=-.=-------------

5.

Design Electrical Rating (Net M\\./e): 794

6.

Maximum Dependable Capacity (Gross -M~W~e~)-:-8--12----~

7.

Maximum Dependable Capacity (Net MWe):

773

  • 8.

If Changes Occur in Capadty Ratings..,.(-1-tem_s_3_T_h_r_o_u_g_h 7) Since Last Report, Give Reasons:

NA

9.

Power Level to Which Restricted, If Any (Net MWe):

550 MWe

10.

Reasons For Restrictions, If,.Any: Administrative derating for air ejector activity lL

12.
13.
14.
15.
16.

1 7.

18.
19.
20.
21.
22.
23.
24.

This Month Hours in Reporting Period 745 Number of Hours Reactor Was Criticat 736.1 Reactor Reserve Shutdown Ho~rs O

Hours Generator On-Line 731.75 Unit Reserve Shutd.own* Hours 0

~ross Thermal Energy ~enerated (MWH) 1.244.451 Gross Electrical Energy Generated (MWH) 391.784 Net E 1 ectr i ca 1 Energy Generated (MWH) 371. 311 Unit S~rvice *Factor 98.2 Unit Availability Factor 98.2 Unit Capacity Factor (Using MDC N~t) 64.5 Unit Capacity Factor (Using DER Net) 62.8 Unit Forced Outage Rate 1.8 Shutdowns Scheduled Over Next 6 Months (Type, Date, Refuel, March 17, 1980, approximately 10 weeks Yr-to-Date 7.296 4.673.97 0

4.580.43 0

9,303,053 2.974.357

2. 809 0 391. 14 z 62.8 62.8 49.8 Curnulat i.'l~.

72, 577 54~382.68 0

51.971.17 0

100,061,820

  • 32.725.517.25 31.026.868. 76
71. 6
71. 6 55.3

______ 4..... 8......... 5_

s 1. 8 3._6"'-'. __ 6_

16. 8 and Duration of Each):
25.

If Shut Down At End Of Report Period, Estimated Date of Startup:_.;.;.NA=-------

(~..

  • Error discovered on August and September reports for Gross Generation.*

Cumulative total should be 32, 725, 517.* 25.

........ ~.:...

No.

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Date 781031 Forced Scheduled

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. REPORT MONTH OCTOBER,* 1979 Licensee Event Report H Ci.:t QJ QJ

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Ull IT Ill\\/ I[ Dresden I DATE November 3, 1979*

  • COMPLETED UY S. A. Cieszkiewicz TELEPHONE (815) 942-2920 Cause & Corrective Action to Prevent Recurrence 745 c

3 Refuel and chemical outage i

Reason:

A-Equipment Failure (Explnln)

B-11aintenance of Test C-Refuel Ing 0-Regulatory Restriction E-Operator Training & License F-Admlnlstratlve 3

Exam Ina t I on G-Operatlonal F.rror H-Other (Explain)

Method:

l -11anua I 2-11anua I Scram 3-Auio~atlc ~cram

~-other (Explain)

Exhibit G-lnstr~ctlons. for Prep~ratlon of Data Entry Sheets for Licensee.

Event Report (LER)Filc(NUREG-0161)

( *-

No.

.11 12 F:

. s:

Date 791013

-:/91020.

Forced Scheduled

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2 vu 1. l:l 1 1111

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UNIT SllUTDOWNS ANO PO\\JER REOUCTIOUS Ull IT 11/\\/IE Dresden II DATE November 3, 1979*

  • COMPLETED UY S. A. Cieszkiewicz TELEPHONE (815) 942-2920

. REPORT MONTH OCTOBER,' 1979 M....

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Event.

111 0 111

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Reason:

A-Equipment Failure (Explnln)

B-11alntenance of Test C-Refuel Ing I I II

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Ill 0

)-..U V1 D-Rcgulatory Restriction E-Opcrator Training & Llce~se F-Admlnlstratlve Exam I nat Ion.

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Cause & Correct Ive c

Q) 0 "O Act ion to

a. 0 E u Prevent Recurrence 0

u Shutdo'wn for hanger and anchor bolt inspe~tion

~ scram (moisture separator. drain,

.Hi_Hi level)

G-Operatlonal Error H-Other (Explain)

I

~-other (Explain) tank Exhibit G-lnstructlons. for 3 Method:

Preparation of Data I-Manual

. 2-llanua I Scram 3-Auio~atlc Scram Entry Sheets for Licensee Event Report (LER)Fllc(NUREG-0161)

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No.

R F: s:

Date 791025

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Forced Scheduled

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UULl:l I 1111.

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UN IT SllUTDOWl~S ANO POHER "EDU CT I OllS UlllT N/\\/IE Dresden III

. REPORT MONTH OCTOBER,' 1979 DATE Noyember 3, 1979*

  • COMPLETED UY s, A. Cieszkiewicz TELEPHONE (815) 942-2920 L

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Reason:

A-Equipment Failure (Explain)

B-Halntenance of Test C-Refuellng

'f c;.;r Ill (IJ

.... "U 11'1 0

)o-U V1.

D-Rcgulatory Restriction E-Operator Training & License F-Admlnistratlve Examlnat Ion*

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Cause & Correct Ive c Ill 0 "U Act ion to

a. 0 E u Prevent Recurrence 0

u Group I Isolation - Operational Error Foreina-n slammed cabinet and

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G-Opcratlonal Error H-Other (Explain)

Method:

l-11anual 2-11anua l Scram 3-Auio~atlc lcram AC &

door on ESS MG set relay

~

DC relay tripped*

I I

~-other (Explain)

Exhibit G-lnstr~ctlons. for Preparation of Data Entry Sheets for Licensee Event Report (LE~}Fllc(NUREG-0161)

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DRESDEN UNIT I SAFETY RELATED MAINTENANCE -

OCTOBER, 1979 NATURE OF LER 'OR OUTAGE MALFUNCTION*

EQUIPMENT MAI llTENANCE NUMBER CAUSE RESULT CORRECTIVr~ACTION Refueling Grappl Preventive W.R. /11817 Outage 111-8 NA NA Machined new pulley &

installed Refueling Grappl*

Preventive W.R. 111818 Outage 111-8 NA NA Machined stops* from seconcf stage mast e

Refueling Grappl*

Preventive W.R. 112332 Outage 111-8 NA NA Adjusted slack cable switch

~-

~.

e

1 Clean Up Valve i 2-1299-004 HPCI Valve 2-2301-35

, Refueling Pla~

, form i

I i Reactor Bldg.

'. Equipment Drain

\\ 2001-3 NATURE OF MAINTENANCE Preventive W.R. #2214 Preventive W.R. #2 360 Preventive W.R. //2217 Preventive W.R. 111937 Preventive W.R. 112 390

, Drywell Equip-Preventive W.R. #1902

~ ment Hatch Core Spray Line Preventive W.R. #2392 Hanger 140 3-M-10:

)Diesel Generator Preventive W.R. #2128 M.O. Valve Corrective W.R. /11061

  • 2-0202-.5A

!A.O. Valve Preventive W.R. #2296 2-160.1'-;22 i

2_!_1501-26A

,Valve Preventive W.R. 111059 l& 26B DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE OCTOBER, 1979_ _

LER OR OUTAGE MALFUNCTION UUMBER CAUSE LER #79-56/03L-0 NA Outage, 112-10 Outage #2-12 NA Outage #2-10 NA Outage 112-10 NA Outage #2-11 I

NA Outage #2-11 NA Outage 112-11 NA LER #79-52/03L-0

  • NA Outage #2-10 Outage 112-11 Packing Out of Adjustment Outage #2-11 NA Outage #2-11 NA i

(

RESULT CO~RECTIVE ACTION NA Replaced indicating light socket I

i I

NA Repacked valve e

NA Cleaned out wa'ter &

c;le.aned t?rque,. switch NA*

  • rnstalled*new air piston NA Tightened: nut NA Opened hatch NA Tightened' lock nut on hanger rod NA Meggered ~11 control~

wiring foi grounds, cleaned buildup on SBR relay contact, dried out cabinet, & meggered diese l vent fan motor*

Leakage Adjusted packing NA Installed new valve NA Adjusted packing

EQUIPMENT NATURE OF MAINTENANCE Refueling Grap-Preventive W.R. #2485

  • ple
Torus Vent Preventive W.R. #2208
Valve 2-1601-6(1

. Core Spray

Hange
r i : Standby Liquid Control

. Core Spray

? Hanger Preventive W.R. #2498 Preventive* w. R. 1124 72 Preventive W.R. #2520 Core Spray Pipe Prevent! ve W.. R. 112519 Support Valve 2~1402-6A & 6B MO Valve 2-0202 SB

'Target Rock

  • Valve.

Pressure Sup-pression Lin,e 1605 Drywell Equip-ment' :Hatch Preventive W.R. 111060 Corrective W.R. 111062 Corrective W.R. 111063 Preventive W;R. 112304 Preventive W.R. #1901 "A" LPCI Heat Preventive W.R. 112432 Exchanger Outlet DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE-OCTOBER, 1979 MALFUNCTION LER OR OUTAGE UUMBER CAUSE RESULT Outage 112-12 LER ll79-55/03L-0 Outage 112-10 Outage 112-12 Outage 112-12

. ! I Outage l/2-121 LER ll79-59/03L-0 Outage 112-12 Outage 112-12 oi:itage 112-12 Outage 112-12 Outage 1/2-11 Outage.112-11 Outage 112-11 NA NA NA

  • NA NA NA NA Packing Out of Adj us'tmen t Bad Gasket NA NA NA NA NA NA NA.

NA NA*

NA Leakage Leakage NA NA NA I

j

  • ---i---

CORRECTIVE ACTION Repaired cable & installed newmicroJwitch.

i I

Installedinewsolenoid

  • i valve e.;

Se.t hange~ & tightened lock nut.i I '

Tightenedihang~r rod r*. i I

Welded rod to ring,*in-stalled rod & tighte.i:°ied, *.,'

I

& cut handrail Tightened!packing Adjusted packing I.

j Replaced ~askets & tighti*

ened piloq flange Adjusted rods, added lock nuts, & tightened clamp nµts Closed ha~ch Tightened packing

EQUIPMENT i Target Rock Re-

' lief Valve NATURE OF MAINTENANCE Preventive W.R. #2333 Drywell Recircu~ Preventive W.R. #2473 I

4 lating Piping I

MSIV Pilot

! Sol!i!noid Assem-

bly. 2-203-2B Feedwater Line 3204A Reactor Feed-water Hanger 3201-1411 Preventive W.R. #2495 Preventive W.R~ #2447 Preventive W.R. #2481

. Main St~am Line Preventive W.R. 112444 3001B

! Main Steam Line l 3001B & C HPCI Hanger 2305-M-234 Preventive* W.),l. 112471 Preventive W.R. 112500

HPCI Kangers Preventive W.R. 112499
2105-\\.'1106 & THO Pressure Sup-press ion Line

.2-1605 Preventive W.R. 112204 FeedJater Inter Preventive W.R. 1110526 lock t~ RadwastE Monitor i

I I

DRESDEN UN IT 2

-~ ---- __ *_ *- ---**--- -!- -- -

SAFETY RELATED MAINTENANCE OCTOBER, 1979 LER OR OUTAGE UUMBER

. Outage #2..., 11 Outage 112-12 Outage 112-12 Outage #2..:.11

~ I I

Outage 112-11 Outage /12-11 Outage 112:....12 Outage #2-12 Outage //2-11 LER #79-54/03L-0 Outage //2-10 Outage /12-11 MALFUNCTION CAUSE RESULT NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA I

CORRECTIVE ACTION I

Installedjblanket ins~lp-tion i

Straightened rod & pus.i,.a.ck in place ;

i Installed,new solenoid valve ass~mbli~s i

' i Bracened out weld tacks Welded washers to plate Replaced qut. & tightened:

I I

Replaced ~issing nut tightened!lock nuts

. i

. j Tightenediloose bolts I

I Tightened :spring tension Tightened lower clamp bolt

&. turnbuckle lock nut.

Cut rod & tightened hanger.

Calibrated top & bottom dials

DRESDEN UNIT 2

i.

SAFETY RELATED MAINTENANCE - OCTOBER, 1979 MALFUNCTION NATURE OF LER OR OUTAGE EQUIPMENT MAINTENANCE UUMBER CAUSE RESULT CORRECTIV~ ACTION LPCI Line Hanger Preventive W.R. 112136 Outage 112-10 NA NA Replaced missing bolt on 1504-M-209 hanger I.

I HPCI Steam Sue-Preventive W.R. 112429 Outage 112-11

~A NA Replaced ~elding rod with ti on Support cotter pin e

HPCI Steam Sue-Preventive W.R. 112430 Outage 112-11 t-JA NA Replaced weldfog rod with tion Support cotter pin 2-2305-W-105 HPCI Pump Dis-*

Preventive W.R*. 112262 Outage 112-1°1 NA NA Replaced clamp bolt &

charge Line

'1 tightened loose nuts I

2-2304-M-22L1 Diesel Generator Preventive W.R. 112082 Outage 112-11 NA NA Performed: quarterly. in-spection Snubbers Preventive W.R. 11235 3 Outage 112-11 NA NA Filled sn\\lbb.ers with oil l

Recirc. Loop Dow1 Preventive W.R. 112431 Outage /12-11 NA NA Installed nuts &

Comer Support tightened; e

1122

/12351 Replaced. bottom SRM Preventive W.R.

Outage /12-11 N~

NA half of

(

switch assembly

' RPS MG Set Relayi Preventive W.R.. 112282 Outage /12-11 NA NA Blocked r7lays

  • 24/4RV Battery Preventive W.R. 112123 Outage 112-11 NA NA Checked & adjusted floats Chargers RPS Relays Preventive W.R. 112283 Outage 112-11 NA NA Renioved blocks from re-lays Diesel*Generator Preventive W.R. 112099 Outage 112-11 NA NA Cleaned strainer & in-Cooling ;1.Ja ter spected bearing

.Pump

... --............ -r""*-~*-.** *..........,.~

I I

EQUIPMENT I

NATURE OF MAINTENANCE DRESDEN UN IT 3 SAFETY RELATED MANTENANC~ - OC'rOBER, 1979. *.

LER OR OUTAGE NUMBER MALFUNCTION CAUSE RESULT

  • -S-RM-...;/1_2,;_l_H_i--H-i-.l--1'-r-e-ve.;..n_.*t-i_v_e.._W_.-R-. -/11_7_0_2_.J--.-L-ER_/,_17_9_...:._2_4_/_0_3L---. 0-.--+---;;.;...;NA-...;;...---t----N-A----+-I-n-s t_a_l_l_e_d_s_p_a-re-, _p_u_l_s_e-.--,.;
  • Alarm Outage fl3-7
  • height discriminator CORRECTIVE ACTION

' 'Diesel Generato~ Preyentive W.R. #1644

    • 125V DC Grourid o*n Interlock Doors CCSW-3C Pump,
  • Suctiop Or~in Line

.CR)) Accuinul,ator

02-31
"A" Fuel Pool ARM C9rrective.W.R. 112231 Pr~vent'iv~ W;R.. 112355 Preventive W.R. 1122)6 Prev~ntive W.R. #21/n LPCI Heat Ex-Preventive w:. R. 112097 changer* 3.-1501-3A & B

!IRM 1117-KlO Re-Preve~tive W~R. #2202 lay LPCI Drywell Preventive W.R. 112230 Spray Line LPRM Meter Dis-Preventive W.R. 112076 play Air Ejector Preventive W.R. 111999 Suction Valve.

' i O~t:ag~*/13-6

<;:>utage l/'3-7.

Ou tag~ 113-7*

Outage 113-.7

<)utage 113-7 Outage 113-7

  • Outage 113-7 I

. i LER 1179-28/031 Outage.113-'7 Out;;ige.#3:7 LER /179-26/03L.

Outage 113-7 NA Pinched.Wire*

NA NA"..

NA NA

,NA. *.

NA

~

NA, NA NA

.'.*.Ground NA'

'NA

. NA**

I NA N:A

. NA NA

  • 1,

"1 Perf~rmed qu~t~erly ins~~t tion

  • i Insulate~: & moved wl~e 1

I i ~

Threaded nipple deeper suction 1 ine Replaced accumula,tor A

  • i

':j in~r :.

c Adj~sted cali~ra~ion
  • l

.1

~.

J Replaced pot* & set. Sl~d. i at minimum po*sition
  • t

'.... : l

'.)

~~

I

1 Replaced r~lay

.i

~

'i Replaced bent.studs &

checked hanger tensions

  • ~ '

.'1. :~

R~placed.diodes

. ~*.. *,...

  • . 7*

Replaced solenoid val~~

.~...:.._

--r*

?:

.. "I*

I DRESDEN UNIT 3 SAFETY RE~ATED MANTENANCf: - OCTOBER, 1979 NATURE OF LER OR OUTAGE MALFUNCTION i

EQUIPMEtH MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Radwaste Monitor Preventive W.R. 1114 84 Outage 113..- 7 NA NA Repl;lced delay' line

~~ J HPCI Pump Dis-Preventive W.R. 111931 Outage 113-7 NA NA Installed bolt charge Piptng

'. ~

HPCI Pump Dis-Preventive W.R. 111929 -

Outage 113-7 NA NA Installed bolt e

charge Piping I

HPCI Pump Dis-Preventive W.R. 111930 Outage 113-7 NA NA Replaced bolt on pipe

>j charge Piping clamp i

I

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I

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e i

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i

EQUIPMENT

. Sn1,1bber NATURE OF MAINTENANCE Preventive W.R. #2024 I j "A" Standby Gas Preventive W.R. 112185

! Treatment Sy1:3tern

  • Snubber.

18 11 Butterfly Valve Prev~ntive W.R. 112183 Preventive w~R. /12203

Spare Accumulato Preventive W.R. 112343
112607
Reactor Bldg.

j Crane Preventive W.R. /16964 DRESDEN UNIT 2/3 I

i SAFETY RELATEb MAINTENANCE - OCTOBER, 1979 MALFUNCTION LER OR OUTAGE IWMBER CAUSE RESULT NA NA LER /179-53/03L-0 NA NA NA NA NA NA NA NA NA NA CORRECTIVE ACTION j

Rebuilt ~nubber I

Reset flow switch Scrapped snubber i

Leak tested valve Overhauled accumulator Adjusted,load sensing de-vice & removed jump~rs I

e I

I

SUMMARY

OF OPERATING EXPERIENCE UNIT ONE OCTOBER, 1979 10-1 to 10-31 Unit Orie was shutdown for entire month, continuing preparation for chemical cleaning and refueling.

SUMMARY

OF OPERATING EXPERIENCE UNIT TWO.

10-1 to 10-13 OCTOBER, 1979 Unit Two started the month oper-ating at an average power level of 709 MWe.

On October 13, at 0440, Unit Two was taken off line for a hanger and anchor bolt in-spection per I.E.Bulletins 79-14 and 79-02, respectively.

10-20 to 10-21 The Unit was placed on the line at 1952 on October 20 but scrammed on moisture separation drain tank high level at 2210.

10-21 to 10-31 The Unit was again placed on the line at 1648 on October 21 and operated the remainder of the month at an average power level of 653 MWe, with a capacity factor of 66.2% for the entire month.

  • 1.*

SUMMARY

OF OPERATING EXPERIENCE UNIT THREE 10-1 to 10-25 OCTOBER, 1979 Unit Three started the month operating at an average power level of 520 MWe.

On October 25 at 2347, the inadvertent jarring of a relay cabinet by a shift foreman during inspection re-sulted in a ESS MG set AC and DC feed trip and subsequent reactor scram.

10-26 to 10-31 The Unit was placed on the sys-tem at 1302 and operated contin-uously for the remainder of the month at an average load of 421 MWe with a capacity factor of 62.8% for. the entire month.

The Unit is limited to 550 MWe for investigation of high off-gas activity.

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