ML20100L872

Monthly Operating Rept for Oct 1984

ML20100L872
Person / Time
Site:	Cook
Issue date:	10/31/1984
From:	Climer, Will Smith INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8412120112
Download: ML20100L872 (14)

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2. Reporti ; ?=fod: October 1984 *

• 3, r r..-.g 7-.- r pew,; g,;w;;; 3250 ,

• 4. N:=:eisi ?.=i.;(Cro::::W:): 1152 .

S. Desi; II:=:i=1?.=ia;(Nec31We): 1030 *

6. 3f--" == T . p=d:ble Qp::i:f (Crcu 31Weji 1056

7. 'f:d=== Dep:.=dd!: t -- =-f (Nec 3:We): 1020 S,. If C=s; s C:= in Qp::i:7 R.:i:;: (1:= .: Nu: .h::,, t.. '

u.: -) SI::: L.:: R:per:. Cise P.:=:ss:

9. Power!. ve! To Whid R==:i==?.If Any (N::Stw ):

10. R=:oss . or R==i:d:=.If.uy:

T..is 51and

Y .4a.Catz. . Cc==!::ive

11. Hour:!.. R:;o:.! = ?::i:d 745 *

- - 7,320, - - - - 86.208

12. Nc=h:r Cf Hot:.. R==:rw:: C-id=1 . 745 6,611 8 64,229.8

13. Re==:r R=erre Sh :dowt H:::: . 0 _6 463

14. Ecur: Ce:::=::: ca.LI: . 745 6,dbJ.U 62,897.5.

15. U..!: R=erve Sh::down H:== 0 0 2.030,349 321

16. Cross Th := ! In::;y Ce .:=: d (3:WH) 19,784,946 185,478,659

17. Crou .r .- . .T ..-. ;7 C4...._..u l..'.!W 3.) . 655,230. _

6,447,480 60,373,770

13. N :II:=:i=1I..=:;y Ce===:::: C. W'd) 628,281 6,205,942

19. Uni: Serri= .::==r 100 58.086.318 89.3- 74;8'

20. U:!: Av-ihhi!!:7.::::mr

. 100 89.3 74,g i

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. 82.68 8J.1 67.7

. Uni: Oc:ci:y . :::::(U ir.; OIT. .i*c:1 _

81.88 82.3 65.1~

23. Uni: . Tor::d C ::ge R::: 0 6.0 7 . 5'

24. Sh::dow.s56:du!:d CverNe.a 5 Ston:..s (Type. 0=:.: d 02:::.::n ofI:s1:

Re'fuelins: and 10 year-outage tentatively scheduled for March 9,1985; 120 days.

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. AVERAGE DAILY UNIT. POWER LEVEL

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00CXET NO. ~'o-31:s s -

, UNIT 1 DATE 11/3/84

. COMPLETED BY climer TELEPHONE 616-465-5901 MONTH october' 1984 DAY AVERAGE DAILY POWER LEVEL DAY (MWE-Net) AVERAGE DAILY POWER LEVEL .:.

(MWe-Net) .

I 1017 17 1021 2 897 18 1022 .

3 584 19 1024 .

4 528 20 1023 e

5 532 21 1023 6 527 22 777 7 648 23 527 8 917 ' '

24 926

~

9 899 25 992 10 914 25 778 11 970 27 737 l

12 1022 l 28 715 13 802 29 . 760 j 14 770 "

30 802 j 15 948 31 1024

• 16 1021 i

INSTRUCTIONS i On in day thisthefomat list the racortinn average daily unit pcwer level in MWe-Net for each mnnch. -

ccmnnea en na -- ---- .- -

O' I)OCKET NO. 50-315 '

LINITSifUTDOWNS AND POWER REDUCTIONS UNIT NAME D.C. Cook - Unit 1 I) ATE 11-12-84 October, 1984 COMPLETED BY B.A. Svensson-REPORT MONTil TELEPilONE 616/465-5901 PAGE 1 of 4 1

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230 841002 F 0 B 4 N.A. ZZ ZZZZZZ Reactor power was reduced to 56% to i permit removing a Main Feedwater Pump,

' MFP, from service. The East MFP was removed to check the F.P. Turbine Condenser for tube leaks. One leaking tube was plugged. The East MFP was returned to service and the West MFP was removed from service to investi-

{ gate reason for high pump bearing i temperatures.

On 841003 the West MFP was returned to service and a power increase was

, commenced. The high bearing tempera-ture problem again developed, the re-actor power was returned to 56% and the West MFP removed from service.

I No bearing problems were found, but the bearing liner was replaced as a precautionary measure.

4

)' I 2 3 Metheml; Exinbie G-Instinctions f: I suced Reasam:

i S: S6heduled A-Equipment Failme(Explain) 1-Manual fo Prepasation of Data i B-Maintenance or Test 2 Manual Scram. Entiy Sheets fin Eicensee C-Refueling .1 Antomatic Scram. Evens Repius (I f RI File (NURIG i

i D Regulatiny Restsiccion 4-Oihes (E xplain) 0161)

IM)pesatus feaining& Ucense I mananation F Adminisisative 5 I

G Opaatismal Enos (Explain) 'Exinbit I Same Somce t'8/77) II Other (Explain)

~

l UNIT SHUTDOWNS AND POWER REDUCTIONS INSTRUCTIONS This report should desenbe all plant shutdowns during the in accordance with the table appearms on the report form.

report penod. In addition. It should be the source of explan- If category 4 must be used. supply brief comments.

anon of sigmncant dips m average power levels. Each signi- ~

ficant reducuon in power level (greater than 20% reduction LICENSEE EVENT REPORT :. Reference the applicable in average daily power level for the preceding 24 hnurs) reportable occurrence pertaming to the outage or power should be noted, even though the umt may not have been reduction. Enter the first four parts (event year. sequent:al shut down completely l. For'such reductions in power level, report number, occurrence code and report type) of the tive the duration should be listed as aero, the method of reducuan part designation as desenbed in item 17 of Instrucuons for should be listed as 4 (Other), and the Cause and Correcuve Preparaton of Data Entry Sheets for Licensee Event Report Action to Prevent Recunence column should explain. The (LER) File (NUREG.0161). This information may not be Cause and Correcuve Action to Prevent Recurrence column immediately evident for 211 such shutdowns, of course, smce should be used to provide any needed explanation to fully turther mvesugation may be required to ascertam whether or desenbe the circumstances of the outage or power reduction. not a reportable occurrence was involved.) If the outage or power reduction will not result in a reportable occurrence.

NUMBER. This column should indicate the sequential num- the positive indication of this lack of correlation should be ber assigned to each shutdown or sigm6 cant reduction us power noted as not applicable IN/A).

for that calendar year. When a shutdown or significant power reduction begms in one report pened and ends in another, SYSTEM CODE. The system in which the outage or power an entry should be made for both report penods to be sure reduction ongmated should be noted oy the two digit code of all shutdowns or sigmneant power reducuens are reported. Exhsit G . Instrucuens for Preparation of Data Entry Sheets Unt:1 a unit has achieved its first power generation, no num- for Licensee Ennt Repon (LER) File (NUREG4161).

ber should be assigned to each entr). Systems that do not fit any exisung code should be designa-ted XX. The ecde ZZ should be used for those events where DATE. This column should indteste the date of the start a system is not appiicable.

of each shutdown or sigmncant power reducuan. Report as year. month. 2nd day. August 14.1977 would be reported COMPONENT CODE. Select the most apatopriate.omponent as 770314 When a shutdown or significant power reduction from Exhibit I Instrucuens for Prepa ation of Data Entr>

begms in one report penod and ends in another, an entry should Sheets for Licensee Event Report (LER) File (NCREG4161).

be made for both report penods to be sure all shutdowns usmg the foilowing critiena:

or sigmncant power reductions are reported.

TYPE. Use "F" or "S" to indicate etther " Forced" or " Sche-duled." respectively, for each shutdown or signincant power B. If not a component fatlure, use the related component.

reducuon. Forced shutdowns include those required to be e.g.. wrong valve operated through error: list valve as initiated by no later than the weekend following discovery component.

of an off. normal candluon. It is recogniard that some judg.

ment is required in categorizmg shutdowns in t!us way. In C. If a chain of fat!ures occurs. trte first component to mai.

general, a forced shutdown is one that would not have been function should be listed. The sequence of events. includ.

completed in the absence of the condition for which corrective ing the other components wiuch fail, should be desenbed action was taken. under the Cause and Corrective Action to Prevent Recut-rence column.

DURATION. Self. explanatory. When a shutdown extends beyond the end of a report penod. count only the time to the Components that do not St any e.usting code should be de-end of the report penod and pick up the ensumg down time signated XXXXXX. The code 777777 should be used for m the followmg report penods. Report duration of outages events where a component des:gnatton is not applicable.

ruunded to the nearest tenth of an hout to facilitate summation.

The sum of the total outage hours plus the hours the genera- CAUSE & CORRECTIVE ACTION TO PREVENT RECUR-RENCE. Use the column in a narrattve fastuon to ampitfy or tor was on line should equal the gross hours in the reportmg penod. explam the circumstances of the shutdown or power reduction.

The column should include the spec!Ac cause for each shut.

REASON. CateIonze h) ,etter designanon m accordance

• " ' ** P * " ""*" '** "" #"

with the table appearmy un the report form. If category H contemelated long term correcuve action taken, if appropn-must be used. supply bnet summents. ate. This column should also be used for a desenption of the safety related corrective mamtenance performed dunna METHOD OF SHUTTING DOWN THE REACTOR OR the outage or power reducuan meluding an identification ot REDUCING POWER. Categonze by number designattun the entteal path aetmty and a report of any smgie release et radioastmty or smgle radiation exposure specificaily asso .

INote that this differs trom the Edison E!e;tne insutut, ated with the outage wiuch accounts for more than 10 cereent IEEll definitions of " Forced Parnal Outage" and " Sche, of the allowable annual values.

Juled Parnal Outue." For these terms. F El uses a shange of For long textual repons continue narrstrve on separate r sper l0 MW as the break romt. For larger power reactors.30 MW and rerstense the shutdown or power redu. nun tbi tmi is im imall a .hange to wanant oplanauun. narrative.

W77

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DOCKETNO. 50-315 UNIT SilUTDOWNS AND POWER REDUCTIONS UNIT NAME D.C. Cook - Unit 1 -

DATE 11-12-84 COMPLETED alY B.A. Svensson NEPORT MON Hg October, 1984 1ELEPflONE 616/465-5901 l PAGE 2 of 4 i

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230 On 841006 the West MFP was returned (Cont'd ) to service and the East MFP was re-moved from service for F.P. Turbine Condenser leak checks. One tube was plugged.

The East MFP was returned to service on 841007 and a reactor power increase was started. Reactor power was held

- at 90% to evaluate the West MFP per-formance. While at this power level a control problem with No. 4 Steam Generator feedwater regulating valve developed. The problem was corrected and power was increased to 100% on 841011, 231 841013 F 0 B 4 N.A. HF HTEXCH Reactor power was reduced to 80% for main condenser tube leak checks. Two tubes were plugged in each of the A-North, A-South and B-North condenser hn1ves_ Reactor power van returned tc 100% on 841015.

I 2 3 4 1:: Fosced Re.isem: Methanl: Exhibis G Insieuctiims S: Sshedi: led A Esguipmes.: Failme(Explain) I Manual for Pseparasion of Data is-Mainsenance or Test 2 Manual Scram. Enuy Sheets fus 1.icensee C Refueling 3- Automatic S.; ram. Event Rep.ni(1.l?R) FileiNURI:G-D Regulaieny Restsicai m 4-Othes ( Explain) 0161)

I 4spesatus Daining& License i.xaminatiori F-Adunnistiaisve 5 G Opcian. mal 1 ne.s (Explain) INinbit I - Same Sinace t'ef t/) II Hihes (Explaail

l. .

UNIT SHUTDOWNS AND POWER REDUCTIONS INSTRUCTIONS This report should describe all plant shutdowns during the in accordance with the table appearms on the report form.

report period. In addition,it should be the source of explan. If category 4 must be used supply brief comments.

anon of signiilcant dips :n average power levels. Each signi.

ricant reduction in power level (greater than 20% reduction LICENSEE EVENT REPORT *. Reference the applicable in average daily power level for the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) reportable occurrence pertaming to ti e outage or power should be noted, even though the unit may not have been reduction. Enter the tirst four parts (ewnt year, sequennal shut down completelyl. For such reductions in power level. report number. occurrence code and report type) of the tive the duration should be listed as zero, the method of reducuon part designation as described in Item 17 of Instructions for should be listed as 4 (Other), and the Cause and Correcuve Preparation of Data Entry Sheets for Licensee Event Report Action to Prewnt Recurrence column should explain. The (LER) File (NUREG-0161). This information may not be Cause and Correenve Action to Prevent Recurrence column immediately evident for a!! such shutdowns.of course, since should be used to provide any needed explanation to fully further investigation may be required to ascertam whether or desenbe the circumstances of the outage or power reduction, not a reportable occurrence was involved.) If the outage or power reduction will not result in a reportable occurrence.

NUMBER. TNs column should indicate the sequential num. the positive indication of this lack of correlation should be bet assigned to each shutdown or sigmticant reduction in power cated as not applicable (N/A).

for that calendar year. When a shutdown or signtilcant power reduction begins in one report period and ends in another, SYSTEM CODE The system in which the outage or power ~

an entry should be made for both report penods to be sure reduction onginated sh'o uld be noted by the two d8it code of all shutdowns or sigmdcant power reducuens are reported. Exhibit G . Instructions for Preparation of Data Entry Sheets Unt:1 a unit has achieved its first power generation, no num. for Licensee Event Report (LER) File (NUREG.0161).

ber should be assigned to each entry. Systems that do not fit any existing code should be designa.

ted XX. The code ZZ should be used for those events where DATE. This column should indicate the date of the start a system is not applicable.

of each shutdown or significant power reduction. Report as year. month and day. August 14.1977 would be reported COMPONENT CODE. Select the most appropriate component as 770814. When a shutdown or significant power reduction from Exhibit ! Instrucuons for Preparation of Data Entr) begms in one report per:od and ends in another. an entry should Sheets for Licensee Eunt Report (LER) File (NUREG4161),

be made for both report penods to be sure all shutdowns using the followmg entieria:

or sigmricant power reductions are reported.

TYPE. Use "F" or "S" to indicate either " Forced" or " Sche.

duled." respectively, for each shutdown or significant power B. If not a component failure, use the related component:

reducuon. Forced shutdowns include those required to be e.g.. wrong valve operated through error; list valve as mitiated by no later than the weekend following discovery component.

of an off. normal condition. It is recognized that some judg.

ment is required in categorizmg shutdowns in this way, in C. If a chain of failures occurs, the first component to mal.

general. a forced shutdown is one that would not have been function should be listed. The sequence of events.mciud.

completed in the absence of the condition for which corrective ing the other components which fail should be described action was taken. under the Cause and Correcuve Action to Prewnt Recur.

rence column.

DURATION. Selfexplanatory. When a shutdown extends Components that do not fit any existmg code should be de.

beyond the end of a report penod, count only the time to the signated XXXXXX. The code ZZZZZZ should be used for end of the report penod and pick up the ensumg down time in the followmg report penods. Report durauon of outages events where a component designation is not applicable.

rounded to the nearest tenth o(an hout to facilitate summation.

The sum of the total outage hours plus the hours the genera. CAUSE & CORRECTIVE ACTION TO PREVENT RECUR.

RENCE. Use the column in a narranve fashion to amplify or for was on line should equal the gross hours in the reportmg explam the circumstances of the shutdown or power reducuon.

penod.

The column should include the specifle cause for each shut.

down or sigmficant pnwer reduction and the immediate and REASON. Categortze by letter designation in accordance contemplated long term correcuw action taken,if appropn.

with the table appearirig on the report form. If category H ate. This column should also be used for a description of the must be used. supply bneicumments.

ma or safety related corrective mamtenance performed duttna the outage or power reduction including an identification ot METHOD OF SHUTTING DOWN THE REACTOR OR REDUCING POWER. Cateponee by number dengnation the entical path actinty and a report of any smgle release et radioactivity or smgle radiation exposure spevirkally assosi.

INote that this differs from the Edisim Electric Institute ated with the outage which accounts for more than 10 percent IEEll definitions of " Forced Partial Outage" and " Sche, of the silowable annual values.

Juled Partial Outage." For these terms. l f:1 uses a shange ut For long tutual reports sontinue narrattve on separate paper

.to MW as the break pums. For larger power reactors.30 MW and referen.e the shutdown or power redu. tion foe this is t.o small a Shange to warrant oplandttoo. narrattve.

W77

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50-315 .. .

DOCKET NO. ~

UNITSilOTDOWNS ANilPOWER HEDUCTIONS UNIT NAME D.C. Cook - Unit 1 I) ATE 11-12-84 COV*l_ETED BY B.A. Svensson October, 1984 l

REPORI MONill - LEPilONE 616/465-5901 PAGE 3 of 4

, 3. E Y' l.iccusce ,E4,,  % Causc & Cossective N- IL8tc i 5E  ;; i5E livent ra y al' Acehm so

" $ *E O Psevent Recussente

$5 jifag Repost #

l 232 841022 F 0 B 4 N.A. ZZ ZZZZZZ Reactor power was reduced to 55% to perform leak checks on the East and West F.P. Turbine Condensers and to change out orifices in the West MFP Pun p bearing housings to reduce the high bearing temperatures. One tube was plugged in the East F.P. Condenser and two tubes were plugged in the West F.P. Condenser. The West MFP was retcrned to service on 841023 and 100% reacter power was reached on 841024.

233 841025 F 0 F 4 84-025-0 ZZ ZZZZZZ Reactor power was reduced to 80% as a precautionary measure due to a 17%

deficiency in available auxiliary l

feedwater flow under certain accident conditions involving a feedwater line break. A further reduction to 75%

for additional conservatism occurred i 2 3 4 Meth =l: E,hibit G - Instsucahms F: F.wced Reason:

S: SihciluicJ A Espapmer.: Faihue(l splaint I-Manual for Prcpasatiem of Dasa B-Maineenance ni Test 2 Manual Scran,. Enisy Sheets l'os 1.icensee Event Repose i1.1:RI File iNllRI:G-C-Refueling 3 Autom.stic &ran,.

l D Regulatosy Ress icthni 4-Oshes ( Explain) 01611 E ,a.. [.. .h ,

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F-Adudusst: alive 5 l

G Opesathmal Ensus Ilimplainn 'l:slabit 1 - Same Somce t*8/77) 11 Othes (Esplaini l

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UNIT SHUTDOWNS AND POWER REDUCTIONS f

I INSTRUCTIONS l This report should desenbe 211 plant shutdowns dunng the m accordance with the table appearmg on the report form.

report period. In addition,it should be the source of explan. If category 4 must be used. supply bnef comrnents.

I

' ation of sigmficant dips m average power levels. Each signi.

ficant reducuon m power level (greater than 20% reduction LICENSEE EVENT REPORT *. Reference the applicable in average daily power level for the preceding 24 hnurs) reportable occurrence pertaming to the outage or ' power should be noted, even though .he urut may not have been reduction. Enter the first four parts (event year. sequential shut down completelyl . For such reductions in power level, report number, occurrence code and report type) of the rive the duration should be listed as zero, the method of reducuon part designation as desenbed in Item 17 of Instruct:ons for should be hsted as 4 (Other), and the Cause and Corrective Preparation of Data Entry Sheets for Licensee Event Report Action to Prevent Recurrence column should explain. The (LER) File (NUREG.0161). Th:s information may not be Cause and Corrective Action to Prevent Recunence column immediately evident for all such shutdowns. of course, since should be used to provide any needed explanation to fully turther invesugation may be required to ascertam whether or desenbe the circumstances of the outage or power reduction. not a reportable occurrence was involved.) If the outage or power reduction will not result in a reportable occurrence.

NUMBER. This column should indicate the sequential num- the positive indication of this lack of correlanon should be ber assigned to each ahutdown or signaticant reduenon m power noted as not applicab!e (N/A).

for that calendar year. When a shutdown or significant power reduction begms in one report penod and ends in another, SYSTEM CODE. The system in which the outage or power an entry snould be made for both report pernds to be sure reductiort ongmated sh'o uld be noted by the tw'o dig't t eode of all shutdowns or signtdcant power reductions are reportsd. Ex1ubit G . Instructions for Preparation of Data Entry Sheets Until a unit has achieved its first power generation, no num- for Licensee Event Report (LER) File (NUREG4161)'

ber should be assigned to each entry. Systems that do not tit any existmg code should be desapa.

ted XX. The code ZZ should be used for those events where DATE. This column should mdicate the date of the start a system is not applicable, of each shutdown or ugniricant power reducuan. Report as year. month, and day. August 14.1977 would be reported COMPONENT CODE. Select the most appropnate component as 770314 When a shutdown or significant power reduenon from Exhibit I . Instructions for Preparanon of Data Entn beginsin one report pened and ends m another, an entry should Sheets for Licensee Event Report (LER) Fde (NCREG4161 L be made for both report penods to be sure all shutdowns usms the following ;rttiens:

or sigmde;nt power reductions are reported.

TYPE. W "F" or "S" to indicate either " Forced" or " Sche.

duled." respectively, for each shutdown or significant power B. If not a component fat!ure, use the related component:

reducuan. Forced shutdowns include those required to be e.g., wrong valve operated through error; list valve as initiated by no later than the weekend following discovery component, of an off. normal condluon. It is recogntzed that some judg.

meat is requsted in categorizmg shutdowns in this way, in C. If a cham of failures occurs, the first component to mal.

general, a forced shutdown is one that would not have been function should be listed. The sequence of events.me!ud.

completed in the absence of the conditiort for which corrective irig the other components which fall, should be desenbed action was taken.

under the Cause and Correcuve Action to Prevent Recur.

rence column.

DURATION. Selfexplanatory. When a shutdown extends beyond the end of a report penod.coimt only the time to the Components that do not fit any existmg code should be de.

end of the report penod and pick up the ertsums down time signated XXXXXX. The code 777777 should be used for m the followmg reoort penods. Report duranon of outages events where a component designation is not . applicaele.

rounded to the nearest tenth of an hout to facilitate summation.

The sum of the tutal outage hours plus the hours the genera. CAUSE & CORRECTIVE ACTION TO PREVENT RECUR.

tot was on line should equal the gross hours in the reportmg RENCE. Use the column in a narrattve fashion to amplify or penod. explam the circumstances of the shutdown or power reduction, The column should include the specific cause for each shut.

REASON. Categonee 53 !etter deugnattun in acordance *" '"E * * " "'""*" * ** *" *"d with the table appeatuy on the report form. If category H

'""* '" "I ""'""""""' " 'EE' E"'

must be used suppiy bnet summents. ste. This c lumn should also be used for a desenption of the maior safety related eonective mamtenance performed dunns METHOD OF SHUTTING DOWN THE REACTOR OR the outage or power reduction meluding an identillcation of REDUCING POWER. Categonee by number deugnativn the ents.al path aetmty and a report of any smgle release et radto.ettvity or 6mple radiation exposure speettleatly assosi.

I%e that this differs from the Edison Electrte insntut, ated with the outage which asecunts (or more than 10 percent IEEI) definitions of " Forced Parnal Outage" and " Sche. ulthe allo *20!e annual velues. l duled Partul Outm." For then. termi, F El uses a shange of For long testual reports sontmue narrattve on separate raper 10 MW as the bren rome. For bror pu*er reactors.30 MW anJ referen,e the shutdown or power reJu, tion roi nm  !

is im imall a .hange to warrant op4 nation. narranve.

pp y !

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DOCKET NO. 50-315 ,

UNIT SHUTDOWNS AND POWER REl>UCTIONS UNIT NAME D.C. Cook - Unit 1 DATE 11-12-84 COMPLETED BY B.A. Svensson NEPORT MONTil October, 1984 TELEPSIONE 616/465-5901 PAGE 4 of 4 w E E g

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233 on 841026. On 841029 the Unit was i

Cont'd: released to increase reactor power to 80% based on analysis performed by Westinghouse. Following the NRC's review of the analysis, the NRC authorized the Unit to be returned to 100% power. The reactor power was restored to 100% on 841031.

I 2 3 4 F: FusccJ Reauvi: Metheml: Enlabis G - Instinctinvis S: S61.cJuicJ A Equapince.: Failuee(Eng42in) 1-Manual for Prepautiini of Data is Mainiciunce ni Test 2-Maunal Scrani. Entsy Sheets fin I.icensee C Refuelung 3-Autouweic Stuin. Evens RegwwiII.ERn FileINLIRi&

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UNIT SHUTDOWNS AND POWER REDUCTIONS INSTRUCTIONS This report should descr*e all plant shutdowns during the a accordance with the table appearmg on the report form.

report penod. In addition. it should be the source of explan. If category 4 must be used. supply bnef comrnents.

atson of sigmileant dips m average power levels. Each signi.

ricant reduction in power !evel (peater than 20% reduction LICENSEE EVENT REPORT :. Reference the applicable in average daily power level for the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) reportable occurrence pertammg to the outage or power should be noted, even though de unit may not have been reduction. Enter the first four parts (event year. sequent:a!

shut down completelyl . For'such reductions in power level. *eport number occurrence code and report type) af the rive the duration should be listed as zero, the method of reduction part designation as desenbed in item 17 of Instruct ons for should be listed as 4 (Other), and the Cause and Correcuve Preparation of Data Entry Sheets for Licensee Event Report Acnon to Prevent Recurrence column should explain. The (LER) File (NUREG.0161). This information may not be Cause and Corrective Action to Prevent Recurrence column immediately evident for all such shutdowns of course smce should be used to provide any needed explanation to fully further investigation may be required to ascertam whether ur desenbe the circumstances of the outage or power reduction. not a reportable occurrence was involved.) If the outage or power reduction will not result in a reportaole occurrence.

NUS1BER. This column should indicate the sequenttal num. the positive indication of this lack of correlation should be ber assigned to each shutdown or sigmilcant reductionin power noted as not applicable (N/A).

for that ealendar year. When a shutdown or sigmficant power SYSTEM CODE. The system in which the outage or power reduction begins in one report pened and ends m another. ggg an entry should be made for both report penods to be sure g .

all shutdowns or sigmticant power reductions are reported. Exmost G . Instructions for Preparation of Data Entry Sheets Unt:1 a unit has achieved its first power pneration, no num. for Licensee Event Report (LER) File (NUREC 0161).

ber should be assigned to each entry. Systems that do not fit any existmg code should be designa.

ted XX. The code ZZ should be used for those events where DATE. This column shou!d mdicate the date of the start a system is ne applicable.

of each shutdown or sigmticant power reduction. Report as year. month. and day. August 14.1977 would be reported , COMPONENT CODE. Select the most apprepnate eomponent as 770314. When a shutdown or significant power reducuan from Exhibit i . Instructions for Preparation of Data Entr) begms m one report penod and ends m another, an entry should Sheets for Licensee Event Report (LER) File (NUREG.0161).

be made for both report penods to be sure all shutdowns usmg the following entiena:

or sigmilcant power reductions are reported.

TYPE. Use "F" or "S" to indicate either " Forced" or " Sche.

Juled." respectively, for each shutdown or significant power B. If not a component fat!ure, use the related component.

reduction. Forced shutdowns include those required to be e g. wrong valve operated through errort list valve as mitiated by no later than the weekend following discovery component.

of an off. normal condition. It is recognized that some judg.

ment is required in categorizmg shutdowns in this way. In C. If a cham of failures occurs, the first component to mai.

general. a forced shutdown is one that would not have been function should be listed. The sequence of events.me!ud.

completed in the absence of the condition for which corrective ing the other components which fail, should be described action was taken. under the Cause and Corrective Action to Prevent Recur.

rence column.

DURAT10A Self-explanatory. When a shutdown extends Components that do not tit any existmg code should be de.

beyond the end of a report penod. count only the time to the signated XXXXXX. The code 777777 should be used for end of the report pened and pick up the ensumg down time m the followmg report penods. Report duration of outages events where a component designation is not applicaole.

rounded to the nearest tenth of an hout to fac:litate summation.

CAUSE & CORRECTIVE ACTION TO PREVENT RECUR.

The sum o( the total outage hours plus the hours the geners.

RENCE. Use the column in a narrattve fashion to ampitfy or tor was on line should equal the gross hours in the reportmg explam the circumstances of the shutdown or power reduction.

penod.

The column should include the specifle cause for each shut.

down or sigmlicant power reduction and the immediate and REASON. C4tegonze b) i.etter desqnation in accordance ontemolated long term corrective action taken. if approprt.

with the table appearmg on the report form. If category H ate. This column should also be used for a description of the must be used.supp6) bnet summents.

maior safety.related corrective mamtenance performed durms the outage or power reduction mcluding an identatication of METHOD OF SHUTTING DOWN THE REACTOR OR REDUCING POWER. Categnnee tw number designattun 'h' #"Iai path actinty and a report of any smgle release of radioastivity or smgle radiation exposure spesttkaily assow l% e that this differs trom the Edison Electric Institut, ated with the outage which accounts for more than 10 persent tEEli definitions of " Forced Partial Outage" and " Sche, of the allowsole annual values.

Juled Partial 0utanJ' For these termi. FEl uses 4,hange of For long textual reports sontmue narrattve on separate paper

.t0 MW as the brea pumi. For larpr pu*er reactors.30 MW .nd referen,e the shutdown or power reJu. tion toi tim

s tua small J .hange to wariant oplanalton. narrative, p) d

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4-..'. 1,. Dockst'No.: L 50-315

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Unit NLmes D.C. Cook Unit.1' E~ Completed By: D. A. Bruck' Telephone:- (616) 465-5901 Date November 14,;1984-Page: 1 of 2 MONTHLY OPERATING ACTIVITIES - OCTOBER,.1984 a

HIGHLIGHTS:

The' Unit entered'the reporting period in Mode 1 with the reactor at:100% of rated thermal power. . Major power reduc-

'tions occurred for the following reasons:

1) To remove the- West Main' Feed Pump from . service for a condenser tube leak check and bearing investigation.

2) 1N) remove the East Main Feed Pump from' service for.

a condenser tube leak check.

3) To remove portions of the Main Condenser from service for tube leak checks.

4) Because of a discrepancy in the Auxiliary Feedwater Rflow calculations resulting in a deficiency of approximately 17% in auxiliary feedwater flow under.

certain accident conditions.

The Unit ended the reporting period at 100% rated. thermal' power.

Total electrical generation for_the month was 628,281 MWH.

SUMMARY

10-02-84 At 1955, powerJwas reduced to 56% to remove'the

! East Main Feed Pump from service to check the feed r pump turbine condenser for tube leaks.

10-02-84 At 2355, East Main Feed Pump returned to service and West Main Feed Pump removed from service t,o' investigate

the reason for high pump bearing temperatures.

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10-06-84 At 2058, the West Main Feed Pump was returned to service and the East Main Feed Pump was again removed

from' service for condenser tube leak checks.

L l 10-07-84 At 1217, the East Main Feed Pump was returned to service i and power assention began at 1305.

10-11-84 100% power was achieved at 1403 after a hold at 90%

because of a feedwater regulating valve problem.

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, DockGt No.: 50-315 Unit N;;m3 D.C. Cook Unit 1 Completed By: D. A.-Bruck Telephone: (616) 465-5901 Date: November 14, 1984 Page: 2 of 2 10-13-84 At 0415, power was reduced to 80% for Main Condenser tube leak checks.

10-15-84 At 1205, power returned to 100%.

10-22-84 At 0915, power was reduced to 55% to perform condenser tube leak checks on the East and West Main Feed Pump turbine condensers and to change out orifices in the West Main Feed Pump, pump bearing housings to reduce the high bearing temperatures.

10-24-84 At 1300, power was returned to 100%.

10-25-84 At 2035, power was reduced to 80% as a precautionary measure due to a 37% discrepancy in available auxiliary feedwater flow under c.ertain accident conditions involving a feedwater line break.

10-26-84 A further reduction to 75% occurred at 1815, on for the same reasons.

10-29-84 At 1627, the Unit was released to increase power to 80%.

10-30-84 At 1800, the NRC authorized the Unit to return to 100%

power. Power increase started at 2105.

10-31-84 At 0105, power was returned to 100%.

The Control Room Cable Vault Halon System remains inoperable as of 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> on 4-05-83. The backup CO 2 System for the control Room Cable Vault remains operable.

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DOCKET.NO.- 50 -- 315

> UNIT NAME D. C. Cook ---Unit No.-1 L ,

DATE 11-13-84

'l 7 COMPLETED BY B. A. Svensson

,' TELEPHONE (616) 465-5901 PAGE' 1 of 1, MAJOR SAFETY-RELATED MAINTENANCE.

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OCTOBER, 1984-

- M-1 . Replaced all valve' internals on Trip Valve MRV-231, associated with #3.S/G'Stop Valve to eliminate leak-by. Post repair func-tional testing verified proper valve operation.

'M-2 Replaced all valve internals on Trip Valve MRV-221,, associated:

- with #2 S/G Stop Valve. Post repair functional testing veri-fled that leak-by has been corrected.

M-3 Replaced mechanical shaft seal on #1 B. A. Transfer Pump to eliminate leakage.

M-4 1CD Diesel-Generator, ICD 2 Air Compressor discharge check valve, ;

i DG-101C, was disassembled, cleaned and valve internals lapped.

Seat was blue checked and valve reassembled. Post repair test-ing confirmed back flow had been eliminated.

M-5 Replaced valve operator diaphragm on containment isolation valve VCR-11. A retest was performed to verify proper opera-tion.

, M-6 Rebuilt 1E Essential Service Water Pump. Installed new bowl assembly and new bearings. Reassembled pump and performed post repair functional testing to assure pump meets design head and flow.

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~yy ystem- MMM & MBH ILGMNM Donald C. Cook Nuclear Plant P.O. Som 454, Bruigman, Moctugan 49106 November 13,.1984 Director, Office Of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:

Pursuant to the requirements of Donald C. Cook Nuclear Plant Unit 1 Technical Specification 6.9.1.6, the attached Monthly Operating Report for the Month of October, 1984 is submitted.

Sincerely, M[/ h W. G. Smith, Jr.

Plant Manager WGS:ab Attachments cc: J. E. Dolan M. P. Alexich R. W. Jurgensen NRC Region III B. L. Jorgensen R. O. Bruggee (NSAC)

R. C. Callen S. J. Micrzva R. F. Kroeger B. H. Bennett P. D. Rennix J. H. Hennigan Z. Cordero J. J. Markowsky J. F. Stietzel i PNSRC File INPO Records Center ANI Nuclear Engineering Department i

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