ML17174A257

From kanterella
Jump to navigation Jump to search
Monthly Operating Repts for Nov 1979
ML17174A257
Person / Time
Site: Dresden  
Issue date: 12/03/1979
From: Cieszkiewicz S
COMMONWEALTH EDISON CO.
To:
Shared Package
ML17174A256 List:
References
NUDOCS 7912180386
Download: ML17174A257 (19)
v • d • e


Text

e

{i"..11

-~

AVERAGE DAI LY Ul-11 T POl-/EP. LEIJEL DOCkET NO. 050-010 Ull IT Dresden I DATE December 3, 1979 COMPLETED BYS. A~ Cieszkiewicz TELEPHmJE ( 815) 942-2920 MO!HH NOVEMBER,* 1979 DAY AVERAGE DAI LY PO\\-iER LEVEL DAY AVERAGE DAILY POWER LEVEL (M\\./e-:-Net)

(MHe-Net) 0 17 0

2 o*

. 18 0

3 0

  • 19 0

4 '.

0 20 0

5 0

21 0

6 0

22 0

7

(}

23 0

8 0

24 0

9 0

25 0

10 0

26 0

11 0

27 0

12 0

23

  • o 13 0

29 0

14

0.

30 0

.15 0

31 16 7912180

e Y..

AVERAGE DJ\\ IL Y UNIT PO\\.JER LEVEL DOCKET NO. 050-237 Ull IT Dresden II DATE December 3, _ 1979 COMPLETED BYS. A~ Cieszkiewkz -

TEU~PHONE (815) 942-2920 MO!HH NOVEMBER, 1979 DAY AVEP.AGE DAILY ?0\\-iER LEVEL DAY AVERAGE DAI LY PO\\./ER LEVEL

{M\\./e7"Ne t)

(M\\*/e-Net) 763 17 786 2

778

  • 1s 753 3

4 0

  • 19 780 4

20 777 5 '

725 21 774 6

764 22 776 7

769-23 775 8

774 24

?82 9

776 25 750 10 450 26 784 11 329.

27 774 12 603 23 775 13 705 29 786 14 774 30 615 15 785 31 16 784

I 1.

MOIHH DAY 1

2 3

4 5

6 7

8 9

IO 1 1 12 13 14

15.

16 AVERAGE. DAILY UNIT POWER LEVEL NOVEMBER 2 1979 AVER.AGE DAILY PO\\.iER LEVEL DAY (M\\Je-:-Net) 516 17 527

. 18 528 19 524 20 8

21 384 22 476.

23 514 24.

524 25 224 26 177 27 383.

23 382 29 439 30..

81 31 518 DOCKET NO. 050-247 Ull IT Dresden III DATE December 3, 1979 COMPLETED BY S. A. Cieszkiewicz TELEPHONE (815) 942-2920 AVER.AGE.DAILY PO\\./ER LEVEL (M\\-/e-Net) 412 465

  • 512 521 522 51 524.

520 523 521 522.,

529

No..

8 i*

F:

... ; s:

Date 781031

~-

Forced.

Scheduled

  • (**}

-41

0.

I-2 UN IT SllUTDOWNS /\\ND POHER REDUCT I OllS REPORT MONTH NOVEMBER, 1979 L

~.

0 c-

.N 0

CTI µ 0

Ill.

c c u licensee 0

"O *-

l1J

µ

J Ill 0

µ Q)

Event l1J 0 ltJ

..c f.JO::

'- x Q)

J
J-a::

Q)..c c Report 0

2:: Vl ~

0 0

720 c

3 I

I

\\

\\

Reason!

A:-Equ.lpment Fat iure (Expl11ln) '

8-MalhtehanciS of test C~R~fuellng

. 1 H

(i.:r Q)

Q)

µ "O

Ill 0

>-U Vl D-Rcgulatory P.estrlctlon E*Operator Training 6 license Examination F-Admlnlstratlve

(,)

I 3

µ c

. GI/\\

c Q) 0 'U

a. 0 E u 0

u Refuel and

~

G*Operatlonal F.rror H-Other (E~plaln)

Hcthod:

I-Manual 2-llanual Scram 3-/\\utoriiat le Scram uuu:L 1 * '. oso-010

_;_.~~~~--'~~

UIH T M/\\/IE Dresden I D/\\TE December 5, 1979 COMPLETED. DYS. A. Cieszkiewicz TELEPHOtlE (815) 942-2920 Cause (, Corrective Act ion to Prevent Recurrence chemical cleaning outage~

I t

I

~-othet (Expl~ln)

Exhibit G-lnstructlons. for Preparation of Data Entry Sheets for Licensee Event Repotf (LER)Fllc(NUREG* *.

.0161)

(

t.. 1.thit 1

.~;

(:i111,._(n11r'rf.'

No.

13 14 Date 791110 79113Q Forced Scheduled L

~.

0 c-N 0

Ol'-'

0 VI c

c u

.OJ L

0 "O *-

11]

0.

..., :I VI 0 '-' OJ

~*

i'O 0 11]

.s: uoc L :c OJ u

I
1-a:::

OJ.s: c 0

c Ill 3 0

0 F

15.17 G

3 UN IT SllUTDOWNS AND PO\\.JER REDUCT I OllS REPORT MONnt NOVEMBEll, 1979

  • c Licensee

~

. Qin OJ OJ c

OJ

'-'"O

. 0 "O Event VI 0

0. 0 Report H

>-U eu Ill.

0 u

Rx scrammed trippe9 due introduced uu1..1:1: I II' I. 050-2 3 7

~~~~-~~~~

UIH T W\\11£ Dresden II DA TE December 5, 19 79 COMPLETED UY S; A.

Ci~szkiewicz TELEPHOtlE (815) 942-2920 Cause & Correct Ive Action to Prevent Recurrence (Rx low level).

Feedwater pump to low suction pressure *.trip by !M's.

  • r i

\\"

j i:ine.

s

  • 22 A

1 Repair leak on moisture separator 2

I Reason:*

A-Equipment Failure (Explain)

    • Er-ifalntenmice of Test
  • . C-Refue 11 ng 0-Rcgulatory Restrlc~lon.

E-Opcrator Training & License F-Admlnlstratlve 3

Exam Ina t Ion

()

G-Operatlonal Error H-Other (Explain)

Method:

1-Manua I 2-llanua 1 Scram 3-Auio~atlc Scram I

i; i*:

~-

  • .o

!f 4-other (Explain').

\\.*

Exhibit G-ln~tructlons.for Preparation of Data Entry Sheets for LI cerisec Event Report (LE~)Fllc(NUREG*:

0161)

(

1=11'1 I h It I - 5;imn Source.*

I

No.

9 10 F:

"f5 :

Date 791105 791110.

Forced Scheduled Q)

0.

I-F F

2 UN IT SllUTOOWl~S AND POHER REDUCT I OIJS UOLl:l I lllJ.

050-24 7

~~~~-~~~~-

U 11 IT MA/IE Dresden III DATE

  • December 5. 1979 COMPLETED BY S. A. Cieszkiewicz REPORT MONTH NOVEMBER'. 1979 TELEPHONE (815) 942-2920 M

L 0

c-N 0

C7I 4J 0

Ill c

c u licensee L

0 "C *-

111 4J

J Cll 0

4J QJ Event 111 0

111

.c 4J a::

4J L

C Q)
J
J-a:::

Q).c c Report 0

c I.I)

~

0 0

7. 23 A

4 25.28 G

3 I

I Reason:

A-Equipment Fal]ure (E~plnln)

B-M~~ntenance of Test C-Refue Ii ng

~

H E..:f" QJ QJ 4J "C Ill o.

>-U I.I) 3 D-Rcgulatory Restriction E-Opcrator Training & License F-Admlnlstratlve Exam Ina t Ion I

4J c

. GJ1' Cause & Corrective.

c Q) 0 "C Act ion

0. 0 to EU Prevent Recurrence 0

u Replaced lockout relay on generato.r. (Rx*

remainoed critical).

Rx scranuned (Group II & III isolation).

IM's performing low vacuum cohdenser* sur-veil lance inadvertently caused full scram.>

G-Operatlonal F.rror H-Other (Explain) 4-other (Explain)

Exhibit G-lnstructions. for Method:

Preparation of Data I-Manual 2-llanual Scram J-Autoinat I c Scram

£ntry She~ts for Lic~nsec Event Report (LER)Filc(NUREG-:.

0161)

(

. r; f:'1thlhlt I -

~:imi! Source.

.OPERATING DATA REPORT DOCKET NO. 050-010 DATE December 5, 1979 COMPLETED BY S. Cieszkiewicz TELEPHONE (815) 942-2920

\\ OPERAT ll~G STATUS NOTES 1 * \\ Un i t Name :_n=r':'e=s...,d...,e_n.........,I...._ ____ ___,,=..,..----------------

2.

Reporting Period: November, 1979

3.

Licensed Thermal ~P-o_w_e_r-.,..(M-W~t~)~:--7_0_0-.~-------------

4.

Nameplate Rating (Gross MWe): 209

5.

Design Electrical Rating (Net MWe):

200

6.

Maximum Dependable Capacity. (Gross -M-\\~-e....

)_:_2_0_5 ________ _

7.

Maximum Dependable Capacity (Net MWe):

197

8.

If Changes Occur in Capachy Ratings.... {-1-t-em_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):

NA.

10; Reasons For Restrictions, If Any:

NA i

This Month Yr-to-Date Curnu:l.at i.'le.

11.

Hours in Reporting P~riod 720 8 2016

. 172. 05.6

12.

Number of Hours Reactor Was Critical 0

0 113. 153. 75

13.

Reactor Reserve Shutdown Ho~rs 0

0 0

14.

Hours Generatot On-Line 0

0 111,196.15

15.

Unit Reserve Shutdown. Hours 0

0 0

16.

Gross Thermal Eriergy Generated (MWH) 0 0

56 2014,747.15

17.

Gross Electrical Energy Generated (MWH) 0 1.20 16,799,254.19

18.

Net Electrical Energy Generated (MWH)

-600.4

-12 2305.7 15,810,568.22

19.

Unit S~rvice *Factor 0

0 65

20.

Unit Availability Fa~tor 0

0 65

21.

Unit Capacity Factor (Using MDC Net) 0 0

47

22.

Unit Capacity Factor (Using DER Net).

0 0

46

23.

Unit Fqrced Outage Rate 0

0

] I. 2

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 1

OPE RAT I tJG STATUS

1.

Unit Name: Dresden II

,-~------------------------------~

2.

Reporting Period:~N_o_v_e_mrb~e~r~,_19~7~9~----,-----------

3.

Licensed Thermal Power (MWt): 2527

4.. Nameplate Rating (Gross M\\.Je) :---.8"""2""'8.----------------
5.

Design Electrical Rating (Net M\\.Je): 794

6.

Maximum Dependable Capacity (Gross -M--\\.Je""").... :-8-12 ____ _

DOCKET NO. 050-237 DATE December 5, 1979 COMPLETED BY S. Cieszkiewicz 1.

TELEPHONE (815) 942-2920 '

NOTES

].

Maximum Dependable Capacity (Net M\\.le}:..,..,.1._.7-=2,___-=---,-

8.

If Changes Occur in Capac"i ty Ratings (I terns 3 Through 7) Si nee Last Report, Give Reasons:

NA

9.

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

NA

"'--~---

10.

Reasons For Restrict ions, If Any:

NA

---"'"---------------------------------------~

11.
12.

l).

14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.

Hours in Reporting Period "Number of Hours Reactor Was Critical Reactor Reserve Shutdown Hou.rs Hours Generator On-Line Unit Reserve Shutdown_, Hours Gross Thermal Energy Generated {MWH)

Gross Electrical Energy Gene~ated (MWH)

Net Electrical Energy Generated (MW!i)

Unit S~rvice *Factor Unit Availability Factor Unit Capacity Factor (Using MDC Net)

Unit Capacity Factor (Using DER Net)

Unit.Forced Outage Rate Shutdowns Scheduled Over Next 6 Mortths None*

This Month 720 709.9 0

704.6 0

1,659,519 540,454 515,337 98 98 93 90.1 2.1 Yr-to-Date 8.016 6,572.9 0

6,454.7 0

14,529,014 4,682,888

'4.435.817.853 81 81 72 69.7 3.5 Cumu:l.at i.ve.

83,..712 64,018.1 0

60,571. 7 0

120.001.654 '

38,477,612 36, 384. 299 426 72.4 72.4 56.3 54.7

13. 7 (Type, Datei and Duration of Each):
25.

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

N_A_* -----------

. r

.. 4'-***.. -**

f

(

.. --~*

I.;

2.;

3;

4. s.
6.
7.
8.

OPERATING DATA REPORT OPERATING STATUS Uni t Name:

Dresden III-Reporting Period: November, 1979 Licensed Thermal _P_o_w_e_r.....,...(t-1W~t~)-:_2_5_2_7--------~

Nameplate Rating (Gross MWe):

828

~-~----~----

Design EI ect r i cal Rating (Net M\\~e): 794 Maximum Dependable Capacity (Gross -M""""w-'e).--: 12 ____ _

DOCKET NO. 050-249

~

__;;;=-=-...,._ ___ ;_

DATE December 5, 19];9 COMP.LETED BY S. Cieszkiewicz TELEPHONE (815) 942-2920

.NOTES Maximum Dependable Capacity (r~et MWe) :..,_,7..... 7...,3.___,,_~--,--

lf Changes Occur in Capac1ty Ratings {ttems 3 Throtigh 7) Since Last Report, Give Reasons:

NA

9.

Power Level to \\:/hich Restricted, If Any (Net MWe): 550 MWe

10.

Reasons Fo'r Restrictions, If Any: Administrative de_r..:a:.:::t..:::i_n.:.:g=fo-r_a_i_r_e_j~e-c-to_r_*..,..a-c_t_i_v_i-ty __ _

11.
12.
13.
14.

rs.

I 6.

17.
18.
19.
20.
21.
22.
23.
24.

evaluation.

This Month

  • Yr-to-Date Hours. in Reporting Period 720 8.016 Number of Hours Reactor Was C~iticat 702.4 5,376.4 Reactor Reserve Shutdown Hou.rs O

O Hours Generator On-Line 687.5 5.267.9 Unit Reserve Shutdown Hours 0

0

  • Gross Thermal Energy Generated (MWH) 1,117.123 J0,420,176 Gross Electrical Energy Generated (M\\.JH) 353,530 3,327.887
  • Net EI ectr i ca I Energy Generated (MWH) 335.200
3. 144.591. 147 Unit S~rvice *Factor 95.5 65.7 Unit Availability Factor 95.5 65.7 Unit Capacity Factor (Using MDC Net) 60.2 50.8 Unit Capacity-F~ct~r (Using DER Net) 58.6 49.4 Unit For~ed Outage Rate 4.5 33.7 Shu~downs Scheduled Over Next 6 Months (Type, Date, and Duration of Each Refuel, March 17, 1980, approximately IO weeks Cumulati.'le.

55,085.1

. 101,178.943 33 ~ 079.047. 25 31.362.068. 76

71. 8
71. 8 55.4 53.9
16. 7
25.

If Shut. Down At End Of Report Period, Estimated Date of Startup:_."-N_A _____ _

~:- -...

EQUIPMENT

":R" Recirc. Pum Drain Valves HPCI MO Valve 2-2301-4 "A LPCI Heat Exchanger

A" Containment Cooling Heat Exchanger NATURE OF MAINTENANCE Preventive W.R. #3387 Preventive W.R. #40 71 Corrective W.R. 114 796 Preventive W.R. #3922 Ao Versa Valve Preventive W.R. 112428 1601-56 Main Steam Isa-

.Preventive W.R. 111794 lation Valves Isolation Con-Corrective W.R. //2623 denser Vent Valves Refueling Plat-form 4ROV Breaker

  • Offgas Monitors

'~ HPCI Discharge Drain Line APRM 1!2 Preventive W.R. 112595 Preventive W.R. 112608 Preventive W.R. 112n1 Corrective W.R. 11294-0 Preventive W.R. 11652 DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1979 LER OR OUTAGE MALFUNCTION UUMBER CAUSE Outage 112-12 NA Outage. 112-12 NA Outage 112-11 Bad Valve Outage #2~12 NA Outage. /12-11 NA Outage. 112-11 NA Outage 112-12 Bad Packing*

Outage #2-12 NA Outage. 112-12 NA Outage 112-13 NA Outage 112-12 Loose Fitting Outage 112-12 NA RESULT NA NA Leakage NA NA NA Leakage NA.

NA NA Leakage NA CORRECT I vr;,, ACT I ON Install.ed* valves, piping,

& sight glass Cleaned & repaired con-tacts Replaced.valve Removed tubes & plugged holes Replaced valve Adjusted main steam iso-lation Valves

Installed packing Replaced lever spring Reattached circuitry wire on top lug Calibrated monitors Installed braces on pipe

& installed temporary seal wrap arourid nipple Replaced cable connector at detector

DRESDEN UNIT 1 SAFETY RELATED MAINTENANCE"'."" NOVEMBER, 1979 NATURE OF LER OR OUTAGE MALFUNCTI OU*

EQUIPMENT MAlllTENANCE NUMBER CAUSE RESULT CORR~CTIVr~ACTION Fuel Grapple Preventive W.R. 112694 Outage 111-8.

NA NA Put cable back & turned operator back to normal position I

EQUIPMENT "A" Standby Liquid Control Pump

R" Standby Liquid Control Pump LPID~ 56-4 lB IRM K-10 NATURE OF MAINTENANCE Corrective W.R. 112892 Corrective W.R. 112893 Preventive W:R. 111990 Preventive W.R. 112568

  • A" Standby Gas Preventive H. R. 113026

.rreatment System Target Rock

'MCC 29-7 Feed Breaker on Bus 29

, CCSW Hanger

2-1514-25

. HPCI. Valve 2301-7 CCSW Hanger 2-1514-16 Preventive W.R. 113035 Preventive W.R. 112622 Preventive T.J.R. 112724 Preventive W.R. 112092 Preventive W.R. 112723

'P!essure Suppres Preventive W.R. 112722 sion ~~nger 1605 f

HPCI AO,.Va.lve Preventive W.R. /11064 i2-2301-7 DRESDEN UN IT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1979 MALFUNCTION LER OR OUTAGE UUMBER

  • CAUSE RESULT Outage 112.,..13 Outage 112-13 Outage 112-13 Outage 112.,-131 I

Outage 112-13 LER ll79-62/03L-0 Outage 112-13 Outage 02-12 Outage 112-12 Outage 112-12 Outage 112-12 Outage 112-12 Outage 112-12

~acking Adjustment Leakage

~acking Adjustment Leakage NA NA NA NA NA NA NA NA NA NA NA' NA NA NA NA NA NA

.NA NA CORRECTIVE ACTION Adjusted pkckillg i

Adjusted p'ackirtg Replaced cable connector i:lt detector Replaced K-10 relay on IRM fl 12' 14' 15',* 16 & 17 Replaced fuse.

Replaced bulb.

Adjusted contact wipe Installed lock nuts &

tightened ioose nut~

Inspected line*- line did have. cap' Repaired brok~n studs ~

. t~ghtened hanger bolts Removed support bar & pipe clamp Machined radius on actua-tor cam

DRESDEN *UN IT 2 SAFETY RELATED MAINTENANCE-NOVEMBER 1979 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE UUMBER CAUSE

  • Drywell Air Preventive W.R. 112497 Outage 112-11 NA Sample Valve 9208A Isolation Con:-

Preventive W.R. If 1775 Outage 112-10 NA denser LPRM 32-49B Preventive W.R. 114102 Outage /12-12 NA LPRM 56-41C Preventive W.R. 113618 Outage 112--12 NA LPRM.24-57A Preventive W.R. 114191 Outage (12.-12 NA LPRM 32,...49D Preventive W.R. 113448

  • Outage f/2-12 NA Auto Blowdown Preventive W.R. f/3941 NA Outage f/2-11 Cable CA 207.7?.

LER 117g~35/03L-0 HPCI OU Filter Preventive W.R. 112941 Outage 112-"' l 3

  • NA RESULT NA NA NA NA NA NA
  • NA NA I*

l I

I !

i I

CORRE CTI vr:i ACTION Greased stern Attempted to uripl'ug line but failed**

Replaced c~ble ;.cqnilector. __

at the de.tee tor eplaced cable 'connector at the detector.

i.

epla~ed c~ble connect6r.

t the det~ctor eplaced _c~ble connector

.t the det~ctor.

I eplaced I

q1ble i

leaned oii filter

I I

DRESDEN UN IT 3 SAFETY RELATED HANTENANC~ - NOVEMBER, 1979 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION IRM 1112 Preventive W.R. /14425

  • Outage 113-8 NA NA Replaced connector on.input:

cable to IRM chassis 1

I *;

"A" Fuel Pool Preventive W.R. 112651 Outage If 3.:..f!,

NA NA Replaced sensor converter ARM

& cal'ibrated.

>>l

. I 24/4P.V *Rattery Preventive

!!2207 113-7 Replaced W.R.

Outage NA NA battery

~

Accumulator Corrective W.R. 11?.6 70 Outage 113-8 Bad Accumula.tor Leakage Replaced accumulator *

  • l 18-:'19 i

Refueling Plat-Preventive W.R. 111935 Outage ff 3-8 1 l'fA NA Installed n*ew piston *

  • form j

.l

/....

Isolation Con::..

Preventive W.R. 111927 Outage 113-8 NA "NA Ins tailed missing l(icking denser Steam screw

.~

Line Hi Flow Switch 24/48V DC Bat-Preventive W.R. 112350 Outage 113-7 NA NA Replaced control boa.rd, I

tery Charger adjusted float, & ~qualizer voltage

.j "A" 125V DC Prevent:ive W.. R. 111693 Outage 113-R NA NA Replaced*diode, repci.ired *.L Charger Trip intermittent connection cm!

Alarm current & sensor limit 1

board, &*changed firing & ;)

  • amplifier boards i

LPCI Heat Ex-Preventive W.R. 112725 Outage 113-9

  • NA NA Replaced & tightened all..

changer Bypass loose nuts

. -~

Reactor Bldg.

Preventive W.R. //2824 Outage 113-9

.NA NA.

Replaced missing bblts &

Equipment Drain spacers & tightened all I

1'angers 2005-3 remafoi'!lg bolts Clean Demin Wate Preventive W.R. 112721 113-9 NA NA Replaced missing bolts I

Outage H.anger Sl(B-3.,..4 32 -1

I I

EQUIPMEtH LPCI Heat Ex-changer Dis-charge Hanger I

NATURE OF MAINTENANCE Preventive W.R. 112720 LPCI Heat Ex-Preventive W.R. 112726 changer: Bypass Hanger 1534-M-202 "A" CCSW Pump Preventive W.R. 112916 Refueling Plat-Preventive W.R. 113016 form HPCI Hanger*

2310-10 Preventive W.R. 112875 IRM II/ APRM Ill Preventive W.R. 112816 Recorder Selec-*

tor Switch Drywell Air Preventive W.R. 113015 Sample Valve 3-9207A HPCI Va_lve Preventive W.R.* 111995

~.

DRESDEN UN IT 3 SAFETY RELATED MANTENANC~ - NOVEMBER, 1979 *.

LER OR OUTAGE NUMBER*

Outage 113-8 Outage 113-9 Outage. 113-10 Outage 113-10 Outage 113-10 Outage 113-8 LER 1179-29/031-0 Outage 113-10 Outage fl 3-7 MALFUNCTION CAUSE RESULT NA NA NA NA NA NA NA NA NA NA NA NA

  • NA NA NA

-~ -

CORRECTIVE ACTlriN I

Bolts replaced on pieviou~

work request.

Rechecked

  • 1 tightness of all bolts.

Repaired hangers &

ened loose bolti Adjusted packing

~

tight...; 1 I.,,

'I l

' 1

~*

Cleaned contact & tightenea

  • I lock screw

~-

/.

Installed U-bol t & double !

nutted both ends l

Cleaned switcQ. & operated ;...,

Replaced valve I

Replaced diaphragin regula~

tor I

i

I I

DRESDEN UNIT 2/3 SAFETY RELATED MANTENANC~ - NOVEMBER, 1979 NATURE OF LER OR OUTAGE MALFUNCT I Ot~

' I EQUIPMEtH MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACT I ON.

1.

Diesel Generator Preventive W.R. 112641 NA NA Replaced door latch, ad-i I

Interlock Door justed &. lubricated

  • J I

Diesel Generator Preventive W.R. 112691

. NA

.NA Replaced latch* assembly. I Interlrick Door

& coil

  • i; l

Spare Tempera-Preventive W.R. /12850 NA NA Calibrated temperature.

I ture Controllers controller

)

Hydraulic Preventive W.Ri 114589 NA NA Snubber beyond repafr -

i Snubber discarded

~

Accumulator

. Preventive W;R; 112708 NA NA Dismantled & found cylig..d~ r defective - discarded cylinder j

--~*

.. ()

.I j *

  • 1 i I !

~...

-:~

' ' \\

\\

~o, I

1')

"='-

" i

':Ii

. ti!.

SUMMARY

OF OPERATING EXPERIENCE UNIT ONE 11-1 to 11-30 NOVEMBER, 1979 Unit One was shutdown for the entire month, continuing preparation for chemical cleaning and refueling.

SUMMARY

OF OPERATING EXPERIENCE UNIT TWO 11-1 to 11-10 NOVEMBER, 1979 Unit Two started the, month operating at an average power level of 763 MWe.

On November 10, at 1356, the reactor scrammed on low level.

The feedwater pump tripped due to a low suction pressure trip introduced by Instrument Maintenance personnel.

11-11 to 11-30 The Unit was placed back on the system at 1156 and operat~d continuously at an average load of 733 MWe until it was taken off line on November 30 at 2347 to repair a leak on the moisture separator line.

Unit. Two finished the month with a capacity factor of 90.1%.

d) q;.* h... '.

I I

SUMMARY

OF OPERATING EXPERIENCE UNIT THREE NOVEMBER, 1979 11-1 to 11-5 Unit Three started the month aper-

  • ating at an average power level of 516 MWe.

On November 5, at 1450, Unit Three was taken off line to re-place a defective lockout relay on the main generator.

11-5 to 11-10 The.Unit was placed on line at 2204 on November 5 and operated continuously Until November 10 when Instrument Main-tenance personnel, performing a low vacuum condenser surveillance, inad-vertently caused a full scram at 1039.

11-11 to 11-30 On November 11,. at 1156, the Unit was again placed on line and operated con-tinuously for the remainder of the month at an average load of 477 MWe, with a capacity factor of 58.6% for the entire month.*

I I

Retrieved from "https://kanterella.com/w/index.php?title=ML17174A257&oldid=5133683"