ML17319A965

Forwards Questionnaire Re Unresolved Safety Issue A-44 Concerning Station Blackout.Requests Response & Review of Encl LER Documentation within 90 Days to Allow NRC to Meet Schedule Requirements for Resolution of Issues

ML17319A965
Person / Time
Site:	Cook
Issue date:	07/09/1981
From:	Varga S Office of Nuclear Reactor Regulation
To:	Dolan J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
Shared Package
ML17319A966	List: ML17319A965 ML20009C818
References
REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR NUDOCS 8107220007
Download: ML17319A965 (40)

Text

TMuiley PBaranowsky A-44 File UTSWB UTIOII acket DEisenhut I8 E-3 RC PDR RPhrple SVarga TNovak SMiner GIB Rdg JRoe

'Parrish ORB¹1 Rdg OELD ACRS-10 Docket Nos. 50-315 JHeltemes and 50-316 PNorian KKnie'f FSchrodder Mr. John Dolan, Vice President Indiana and Michigan Electric Company Post Office Box 18 Bowling Green Station New York, New York 10004 SUL OS )981 CO

'fKIjh

'UL15 1981~ "

Q4$4 lQCL1AR QROULlUCC6 OOANI$5Ml

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Subject:

Information Request Regarding Station Blackou Safety Issue A-44, D, C.

Cook Units 1 and 2

olved The NRC staff is currently addressing Unresolved Safety Issue (USI)

A-44, Station Blackout; The purpose of this work is to establish the safety significance of an event resulting in a loss of all alternating current power and, if significant, to consider the need for any specific changes.

-Over the past several years information requests have been forwarded which requested information that is being used in the USI analysis.

Your interest and cooperation in the past have been appreciated.

At this time the USI A-44 effort t is being directed toward determining the reliability of the onsite standby diesel generators.

The enclosed questionnaire has been prepared to provide accurate operating experience to serve as a basis for such a determination.

More specifically, its purpose is to obtain more detailed data than were available in previous diesel generator studies such as AEC-OOE-ES-002, NUREG/CR-0660, and NUREG/CR-1362.

The questionnaire (enclosure

1) requests information in tabular form and solicits data for the year s 1976 through 1980, inclusive.

There are four tables enclosed:

(1) Diesel Generator Operations Data, (2) Diesel Generator Scheduled Down Time Record, (3) Diesel Generator Unscheduled Down Time Record, and (4) Onsite Emergency Diesel Generator and Auxiliary Equipment Modification Record.

Also enclosed are examples of completed tables as well as a clarification of what should be entered.

Please note that, although it may appear that only Licensee Event Report (LER) information is sought, data on all diesel generator malfunctions, independent of whether an LER was prepared, is requested.

Please find enclosed LER documentation (enclosure

2) presently docketed for your facility.

You are requested to review these and to indicate if there are other reports which have not been enclosed.

Finally, please find enclosed a copy of the appropriate portions of.your response (enclosure JUL 28 198)

F PDR.

OFFICE])

SURNAME/

OATEN NRC FORM 318 IIO/801 NRCM 8240

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Mr. John Dolan 2

3) to our letter of March 6, 1978 which requested

related, but different, information.

This is being forwarded for your information only and should aid in preparing Tables 1 through 4.

In consideration of the time and effort necessary to obtain this information, the completion of Table 4 should be considered voluntary.

However, it should be noted that if operational and hardware modifications are not identified, the positive or negative influence of these features on emergency alternating current power reliability may be lost in the evaluation of the data.

The expected effect is that our generic reliability estimates may be lower than that which actually exists.

The above information is requested in accordance with Sections 103.b.(3) and 161.c of the Atomic Energy Act of 1954, as amended.

To meet our schedule requirements for the resolution of USI A-44 and to incorporate as much real experience as possible into the reliability model for emergency power systems, it is requested that your response be provided within 90 days of the receipt of this letter.

However, if this schedule is inconsistent with priority requirements for other licensing work, please provide us with your proposed date of response within 30 days.

Ife plan to complete our analysis of this data by February 1982.

Your data should be provided by that time so that an accurate assessment of onsite alternating current power sources can be made.

Mr. P. Baranowsky has been designated Task Manager for USI A-44.

Should you have any questions, please feel free to contact him at (301) 443-5921.

Your time and efforts are appreciated.

D1STRI BUTION

Enclosures:

As Stated Sincerely, OriSinal S iS~eL bf'.

A. var8+

Steven A. Vargat Chief Operating Reactors Branch Pl Division of Licensing cc:

w/enclosures See next page This request for information was approved by the Office of Management and Budget under clearance number 3150-0067 which expires May 31, 1983.

Corments on burden and duplication may be directed to the Office of Management and Budget, ttashington, D.

C 20503.

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Scanl on, Esquire 2034 Pauline Boulevarc Ann Al bol ', Ylchi can 48103

Thl)LI; 1 I)i,encl Generator Opc ra t:iona Dn ca Cai.cndar Year 19 Enclosure 1 Page l I ln << t l'Ionic Unit Ho.

ltcason for DG Opcrat:lo>>,

6 acl>cd<<lcd l)<<rntio<<of It<<n Teel> ~ Spcl Itc(I El Test DG Ho.

tlu<nber of Starts Nuiuber Percent:

of Loading of.

I)<<ration of R<<n 1)efore St:op 1'or I:ncl> l)G I'ntlurc Identl fication of 1'allure Itchier to nttnclicil 1.1'.Ita nr Table 3

l)G Actual Demand St.arts not for Tcs ti<<g Hiscellnneous Tests (Specify Type)

TAOl.L' Dieuel CuucruL'or Scliud(ilcd Downciiue ltucord Culcndur Your 19 I:nHosure 1 Pnl;e 2

1'lunr Hague Unkt No llonru of l)dwnL'lulu Reuson for Downcime Rcuccur uliutdown C

DVlf 1(cue Lor noC ullUCdown i'~

7C Conmicn cs Sclieduled Hainrenance Tisane DC is unavailable for eniurpency service because of required tears

ThISI.L' Diesel Ccncrutur U>>ucl>cd>>led Dow>>tlui<< It<<cord Cul<<>>dur Your 19 I'.nclosnre 1 1'age 3

I I unl II>>illa U>>1 t Ho.

I.EK hbstruct N<

(Kefer to uttcl ed LL'K Abstract Dow>>tin>u llonru Totul s) llours L'roub1v- 'ar tu Dcl

~llocCLC Lvol OL'C

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~LQ 1 IIC Q CCcllcClLCC LC CC OECKC C

CCC I LCLLnre: wOuld J

I not lluve bvv>> a fallur>> under euierI;ency co>>LIItlo>>s, please explain b re.

Ilefer to uttaclied LL'Its or. tbv fall>>res listed fn Table 2..

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Q)VJile = Laaaa'aa a)a: J IIIcue 1 (au))a')'i) LL)r u)l)f Au)filiu)y l.)f))lf>)uu))c ffudlff<<uLIou 1(ucu))I 1))clos))re 1

Page I)

I'1 a)))L Ifi))nu If)) f.L'fu, Equi fa)uu))t or ploce)IULQ modified Dutu of

Mod, lauuuoll FQLfodificul:I.o)l u<<d Duuirud Tu)prove)))u)) t Duucrlpf:lo)) of Modific))bio))

TABLE E'ATB1ES EXPLASNATI0!//CLARIFI CtiTI0."(

Table 1

Reason for DG Operation and Scheduled Duration of Run:

Th's column conta-..s the different c tegcr'es of d'esel generator operation.

The categor'es are structured sucn tnat tne start and run conditions are similar for all. of the tests in a category.

In this column, enter the schedu'd run durat'n for each of the test categor'es.

Also enter the numoer of diesel generator starts that are done for each type of test.

For era-. p e, if on the =o..tn y test there

's one s ar-from the local con-I o

8 c

ae 5 ar o

tne e ote cont 0

s

'tile

,u. oer oz sta ts per tes" is two. If two or more d'esels are started simu taneously for any reason, p'ease record it as a multiple start.

DG.'eo.:

Enter each diesel generator's identification number in this column as sho a in the era pie.

'Number of Starts:

Enter the sum of the successful and unsuccessful start atte-pts "or each category.

If there are several starts for each test, include all of them, but be certain to record. the number of starts per test in column one.

Number of Failures:

Enter the sum of the failures for each category.

A failure is counted if the obgectives of the test are not ach'eved.

A subsvstem fai'ure that does not cause failure of the diesel ge,.erator system is not counted as a failure. If the diesel generator d'd not

start, run, and load as required by the test, a failure shoulc be recorded.

However if the diesel generator would have supplied power in some capacity for an emergency, please explain in Table 3.

For example, if the diesel started on the second attempt or the diesel was tripped to repair a minor oil leak that would not have been a

problem in an emerg ncy, this should be noted in Table 3.

Percent Loading of DG (K'vT):

Enter the percentage that the diesel is loaded for each category.

The continuous kilowatt rating is considered to be 100K.

Duration of Run 3efore Stop for each DG Failure:

Record the run-time for each failure.

Zf the diesel failed to start, the run-time would be 0 min.

Identification of Failures:

Attached to this questionnaire are abstracts of the LERs related to the diesel generators.

The abstracts are numbered starting with one.

Refer to this number to identify the failures, but if there was a failure for which there is no abstract, assign the failure a number and include it in Table 3.

able 2

Reason for Downtime:

Enter in this column the categories of schedule main-tenance that make the diesel generator unavailable for emergency service.

If the diesel generator is unavailable for emergency service during surveillance testiag, report that also.

4 Enc3.osure 1 Page o

2 Table 2 (aoa-'a)

Hours of Dotentime:

Enter the number of hou s tnat the diesel generator is unavailable for emergency service.

Repo t the hours under the colu=z reactor shutdown or reactor not shutdown as appropriate.

Co~ants:

Co=ant on time to return to service after ma-'n e..ance has

begun, or other pertinent infor at"on.

'o~e LB.bstract No. (Refer to attached LzZAbstracts):

The attach d LERs are numbered start ng from one.

Refer to this LB. ".." ber in column one.

Eac'n LZR abstract should have an entry in this table.

there was a failure not inc'need in t.ae attached abstracts, p ease assign it a nu ber and enter it in th s table.

Downt' Hours: 'nter the nu=ber of a.ours that the diesel generator

's unavailable for emergency service.

Subdivide these total hours

'nto troubleshooting, parts del'very, and repair or rep3.ace-..ent.

Co ants:

Use this co'u n to comment on the downtime and the failure.

~f the reported ai3.ure was on y a t chnical speci 'cat'on violation, but would not be a comp'ete failure of the d:esel ge..e ator to supply power or would only be a del y, please elaborate in this colv'1n ~

l'able 4

Equipment ox procedure modified:

List in tnis column the eauipment or procedures related to the emergency onsite power system that have been modified since the reactor beca=e critical.

Date of Mod.:

Enter the date that the modification was co plated.

Reason for <<fodificat on and Desired improve ent:

Report the reason or the modification and the desired or observed improve ent in the system.

Description of Modi ication:

Briefly describe what modif'cation was made.

TAlft.t) 1 (SIImp],c)

Di<<u<<i Ccn<<m):or Opvrntluns DuLu Cul<<u)fur Vcur ]97o Enclosure 1 Page 7

I lant ttn)llc YaKx Unit tlo.

1 6

2 ttcason lor 13G Opclat loll~

6 ucllvduled Duration of ltun T<<cll. Sp<<<<

ltc)t d T<<st Hontllly Surveillance (I houI)

(I start/test) 1)C lfo.

Bur)'ucr of Sturtu 12 12 12 ttu));t)ur t)el conf:

of Luudinf; of Puilures DC (KtJ) 100 100 100 Dural:lon of ttun lfclole Stop t)OL tt;Icll 130 1'allure 30 u)ln 0 mtn 0 IIIin

'idcnf:lfication of 1'r)ilurcs It<<fcr tu <<ctncllc)l I.l:It.) or Table 3

Ltttl! >6r Lf'.lt 82 Itefueling Outage (l2 hours)

(I start/test) 0 100 3.00 100 1 i)our 1.1':lt II 3 Hisc. Tuel) Spec Reqld Tests (Start Only)

(I start/test) 0 100 100

'1"Il)lv 1 tfo 9

DC Actual Demand Starts not for TI's ting SEAS Signal (I hour) 0 lt J fl Multi ale start of J DGs Hisccllaneous Tests (Speci.fy Type)

Verify ltc pa irs (not full test)

(S tart Only) 0 0

0 0

0 till u

'1'al)1 c 3

8 10

TABI.E 2 (SQIAple)

Dlus el C<<>>era tor S chad>> l<<d 1)owo Lime Record Cal<<>>ilar Year 19 Enclosure 1 Page 8

Plant Name Uoit Ho.

Iluiir:i ol l)owotlme Reason for Downtime Scbeduled

~

Milinteilailce D

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1 3

Reactor.

sliiitilown

( 8 15Cd D(:(f I

D(((

2 1)(:1I l)(1 lleaci:or not sliiitilown DG Comments Preventive Mainteoance Semi-annual 6

Annual 24 16 16 Equi Paleil t Modification Modified liibe oil on eacli diesel'iesels down at ilil'ferent times.

Time DO is unavailable for emergency servf c(

because of required tests Down 4 hrs per test 4i8 40 48 L

1)losel caiwiot be autoiaatically startei'1 durinl; test or for. tliree hours af terwanls

TAlll.l' (S an< p le)

Diesel Gcu<.rntor Uo<<chcduled Downiia<<. ilecord Calendar Year 19 I'.nc losul <'

Peg<'

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I.l'.ll Abstract H<

(Ilcfcr L'o nttcl cd LLll hb"tracl Downtime llours Totnl lloura

'l'roublc- 'nrta,Del c~licctlh

~<vcr ctc It<:pair/

tacit ccc COilllccctll tf'lll/Of tllc fcpltrtci fcllllÃdtltlccltl llct tlcV~ l)ccc c failhr<<under eiaergcncy co>>dltions, please explai>> herc.

J llefer to nttachcd. I.ERs or. thc fal lures 1isted In Table 1.

1 2

3 I<

5 G

7 0

Ho I.Elt 9

10 I<

3 l2

.0.0.

0.

0 0

0 0

1 0.5 1

0 0

0 0

0 0

0 1

1 10 0

0 0

0 0

0 0

2 1.5 l.

0 0

0 0

0 0

0 Diesel sLarL'ed ln 15 sec instead of required 10 scc S<.condary al.r prcssure low.

I'ri<aary air satisfactory.

Secondary air pressure low.

Prlr<<ary nir satisfactory.

Diesel start<.d lu 20 scc instead of requi.red 10 sec.

False DG start signal.

DG satisfactqry Required DC siarta after the fai1urc of one dicsc1.

SL'arts to veri.fy repairs.

TABLE 4 (Sample)

Onsite Emergency Disso'i G<<>><<rator and Auxiliary Eq>>lpai<<nt Hodification Record Enclosure 1

Page 10 pla>>t Name U>>lt: No.

Lquipmclll or procedure modify'<<d Date of Mod.

Reason for Modification and D<<sired Improvement Description of Modification Lube oil system 2/76 Improve turb'o charger lubrication for emergency starts.

Soak-hack pump was removed and replaced with a continuous lube oil p>>sip.

Ncw pum>> also continuously lubricates thc crankshaft.

Relay cabi>>ets l/78 Prevent dirt from fouling relay contacts.

Cabinet doors wi.th gaskets were installed.

1nstr>>ment Relocation 6/79 Eliminate vibration damage to instruments Co>>trol and monitorl>>g instrument panel was relocated from the engine skids to a fre<<

standing panel mounted on the engine room floor.

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P

~ O. SOX 18 BOEYLIHG GRE EH STAT IOH HEW YORK, H. Y. 10004 rebruary 8,

1978 Donald C. Cook, Nuclear Plant Units 1

G 2

Docket Nos.

50-315 and 50-316 D?R Nos.

58 and 74 sr.

Zdson G.

C se, Acting Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Comm'ssion Washington, D. C.

20555

Dear ~Ir. Case:

This letter is in response to 'Ir. Karl'R. Goller's letter dated December 15, 1977 whicn requested response to the cuestionnaire for the reliability study of the standby Diesel Genera'-ors by all Power Reactor Licensees.

Enclosed please find a cofnpleted questionnaire for the Diesel Generators at the Donald C.

Cook Nuclear Plant.

Since we have not had any significant operating e:cperience on the Unit 2 Diesel Generators, the responses to this questionnaire are addressing the Unit 1 Diesel Generators.

Although tnere are small differences in the control cir-cuitry between the two units, the Diesel Generators them-selves that are installed in the two (2) units of the Cook Nuclear Plant, are identical.

We would appreciate it if you could make the results of your reliability study available to us at the earliest possible convenience.

Very truly yours, T~ lingnas" ice President JT/mab Sworn and subscribed to before me this ~~ day of r ebruary, 1978 in New York County, New York Notary Public EA7-L"- I D~~RY HOTAKY ~uouC. ':c(s cf "a~ ~

~Nv~ 4l<<792 Cusi'.t:s8

.n f'L.wns C katy

I

~

4 7f yes, (other than hand portable fire extinguisher s), thm identify gases and give approxinate tank siz~.

.3 Vo?u..

(rt

?

Gases ril"e ally foreicn'oases such as propane, fran, halon, ca-bon dioxide, etc.

stored in the:

Diesel

"-ngine rooi"?

Yes x

no or edjecent buil din"s?

Yes x

!lo Goes coritrol sys ea ante-,atically bypass i':"::rg ncy s'~~r'ing any engine temporarily out of service for c"in'"-none..'?

Yes 'o l?g if "es, t>>"n,".c:> ".,=ny failures to byoass h=-tse occuredT U.

Doos the control syst n automatically overdo the test i;,."d under eeerge.,cy conditions?

Yes Wo x

Y.

Have i -petitive ?,",echanical failures occurred in any,covponent part GP S'!1 SyS 'il Cf. t. e QnGi ne generatOr Qr'St~0'Ch'eal et V 5'

'-'ll ~'i'

> 7 Z.U~

~

~

Hc,'j pi<any failui e'.

20

~

e Gi ve nature oi fc ilure

$ gj.cion lie?

>i.

Mould periodic (yearly or otherj evaluation and/or testing by "outside experts" contribute significantly to the diesel-generator reliability?

Yes 'o.~

Give brief reaso <is for the answer.

~'

a ~

\\ P1 Give tne acc: mulat",:d time-load operating record ;or ach diesel-generator uni t. "rom in tallation to the present (Running Hours):

Preoperational

.est Dai.~

~

~

4 Engine Surv. Testing h

Emergency Total

Serial Ho.

ilaiatenance Hrs.

and Gther Hours halo Load

Loaded Service Hrs.

r

'd 0-3673.

yO-3669 e.VO-3672

.VO-3670 7

Sue feil lance test.load (percent. of contirauous rating) 3.

Give the projected or planned tiriie-load operation for

• -.-. h diesel.-generator unit during the next, 1Z months.

Survei 1 lance 6:

Em rgcncy:.

Total

'.lhaintenance Hrs.:

and other:

Hours'ervice Hrs.:

50 8

58' 4..

Provide the followinq summary of the periodic surveillance-testing.'.>i e.;perience:

I I

a.

Starting date of surveillance testing (OL date) l0/25/74 b.

Periodic tes" inter"sa]

31, days c.

Total number of surveil lance tests performed l50

(=-S~)

d.

Total number of test failures failure to start failure to accept load failure to "arry load failures due to ooerator error" failure due to equipaIent noo being operative during energency conditions e-Supply a copy of the surveillance test procedures with this completed questionnaire. *

• Available for on-site inspection ooZy-J

~

a I,

~

~

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TAIII.I; 1 L)A<-a 'L ( cncrnL'or Opvf>>L'iona 0'<Ln t.ale>>unr

<'v<<r 19 1 - Page 1

I l<<>>t H:In<d ti>>lL tto.

iten"o>> for DG Operation, 6 scl<cdulcd Durn tlo>> of lh<>>

Tuel< ~ Spec lte<l d Tcs t DG Ho.

tiuner.

of Starts liuent><. r of 1'nl lu<<.<

Peace>>t:

l.ondlng oZ DG KII i<>>ration of Ih<n l)cfore Stop 1or I'.nel<

DG I'n 11>>r<.

I<le>>LLELcnLLon of 1'allure Itef<.r t<> nt'Lani<ed 1.1'.l(n or 'ini>l>> 3}

DC Actual Demand Starts not for T<.s tlag klisccllancous Tests

($pecify Type)

't'Attl.l! 2 Dicuci t:<<n<<rutor S<<bcdnicd Downtime lt<<cord Cuicndur. Year 1)

Fitclosure 1 Page 2

Plant Name Unit Ho.

Reason for Downrimc ltcuct:or sltutdown llonrs of Downtime ltcuctor nor. sbutdown I)C Comments Scbudulcd Haintenancc Time DC is unavailable for cmcrgcttcy service because of required tests

'1'AISI.L' 1)lcuul 4<<<<oral.ot llu<<cl>>:dulod I)ouucltau It<<cold C~il udal Vcahr 1) 1'ttc1osure 1 1'tje 3

1'1 at t c N an>a "Utt1. c No.;

LL'R Abs c rac c Ni (Ih.fur co at:ccl ed LL'll Abs crac Dowuc la@.'llo<<r:s Tocal JE llours 1'roublc - i'area, l)vl slloocia 'l.'lcr'cc I,

- il>>V>><r/

tUII 1 i':L' fall<<rc <<ader uncrpcacy co>>dlclou", pl<<a<<<<cxplaia bore.

1(efcr co at:cacltcd Ll ttu or el~<< failurea liacad iu '1'able l.

'1'All

!.l Ii Onoicc Eiwvrgcncy Vio"cl (lunvrni.or <<iiil Auaillnry l.'qwLP>ncnC HudLL'icot.lun lt<<curd 1 n<<lo'ure 1 Page 4

1' ilil4 Ãalllc lln L L Ho.

Equi pllicnc ol p roccillllc Aloilit Lc0 Mod.

Dcuircd dur hodLELciiLLon iind Ii'll)r0 v oui c Llc Dcucript;ton of 1foilification

i

~

~

~ur

]

P,i, Ts"3LE

'x'.i i'RIES EXPLA;!ITICl/CLs'i"'tCA "LOS ole l Reason for DG Operation and Scheduled Durat'on of Run:

.h's column cont='ns the dif arent categories of d'esel ge..erator operation.

ine categories are structured sucn thar. the start a..d run cond.'Cions are simi ar xor all of the tests in a category.

In this colucin, enter the scheduled i

run'uration for Qacn oz Cne. 'Cast c

. go 'es A'so en ne

.u.ber of d'esel generator sca ts Cnat are done.or

~;.;ch type oz

"-; st.;or e

a~9~ e ix On Chic

.Out 1V CiiSC C ia

~

O'~'"-

S a>>C Q~

C~ee OC~ 'cr-c"o's and one car=

= c= cha re=ore conc"o c.".a "..'-,"er c-s-=res

.per tes-is tvo.

Ez c;.o or

. ore ciesels ar started s'=.u cane=us:v or any reason, please record it as a multiple start.

DG bio.:

Fnter each diesel generator's identification number in this column as sho4n in Che exa pie

'.:u-...ber oz Stax'Cs:

Fnter the sum of the successful.

and unsuccessful start acce=.pts for each category.

Ef there are sevexal starts for each test, include all oz ti;em but be certain to record the

x. mber of starts per test in colu.m one.

Number of Failures:

"-ntar the sum of the failu es for each category.

A failure is counted if Che oo'ecti*ves of the test are no't achieved.

A

'ubsyst m failure that does not cause failure of the diesel ga.;erator system is not counted as a zailure.

Iz che diesel generator d.d not

start, run, and load as required by the test, a fa're'hou d be

. recorded.

-:o..ever if C.ce diesel generator

ould have supplied.po'-er in some capacity for an e-ergency, please explain in Tab'e 3.

For example, iz the diesel started on the second attempt or the diesel

as tripped to repair a minox oil lea!c, that would not have bean a

problem in an emergency, th's should oe noted in Table 3.

Percent Loading or DG (~w):

loaded for each cate-ory.

to be 100/.

"=nter the percentage that che diesel's The continuous kilovatt rati..g is considered Duration of Run Before Stoo for each DG Failure:

Recoxd the run-time for each failure. If Che diesel fai'ed to 'start, the run-time ;.ould be 0 min.

I Identification of Failures:

Attached to this questionnaire are abstracts of the LiRs related to che diesel generators.

The abstrac s are numbered starting ~Cth one.

Refer to this nu-.,oer to identify the failures, out iz there yas a

ailure for ~mich there is no abstract, assign the failure a number and include it in Table 3.

Table 2

Reason for Do.~time:

Enter in this colure the categories of schedule main-tenance that make the diesel generator unavailaole for emergency service.

Ef the diesel generator is unavailaole for emergency service during surveillance testing, report that also.

~abl.e 2 (coot'd)

Hours oE Downtime:

Enter the number oz hours that the diesel generator

's un vailable Eor emerg ncy service.

Report the hours under the colu~ react or shutdo~w or reactor not shutdocm zs appropr"ate.

Co=-ents:

Co

.ent on time to return to service after maintenance has

begun, or other pertinent informat on.

L:-2 Abstract No. (Refer to attached LZ Abstracts):

one a"tach d L=;s are nu bared starting from one.

Refer to this LB n'm'oer in co mn one. 'ach LEZ abstract shou'd have an entry in th's tab'e.

if there was a failure not included in the attached abstiacts, please assign it a number and enter it in this taole.

Dc~at='me Houxs:

"-nter the nu ber of hours that the diesel ge..erator

's unavailable for emergency service.

Subd'vide these total hou s

into troub'eshooting, parts delivery, and repair or rep'acement.

Comments:

Use th's colu-n to ccmment on the do'v.ti.e and the Ea ure.

f the reported ailure was only a technical specific, ticn violation, but would not be a complete failure of the diesel gene ator to supply power or, mould only be a celay, please elaborate in '.his column.

Tab1e 4

Equip~pnt or procedure modified:

L'st in th:s column the equipment ox'.ocedures related to the emergency onsite po.-er system that have been modified since the reactor beca e critical.

Date of Mod.:

Enter the date that the modi ication was completed.

Reason for:fodification and Desired improvement:

Report the reason for the modification and the desired ox observed improvement in the system.

Description of Modification: 3riefly describe what modification was ade

~

Thttt.L' (Sample}

l)i<<uvl Cunurutur ')pvrutiunu l)utu Culundur Your i')'/6 Inclosure 1

1'ne 7

1 lant tiuwiL ikY.

Unit tlo.

z '.

2 Reauon fos DC Opi.'ration, 6 uclieduled Duration of lliul Taction Spec ltull d Taut tlontl>ly Survvillunce (I hour)

(I start/lest) l)Q Hn.

iiu age r of Stol tu 12

)2 12 of t>uiliivuu f.eading ok DC (KW) 100 100 100 ltu..;hu'. urcent l)u~"tion of gun t)etoffe Stvli 1'ot t 'icli l)(i 1'u 1 liire 30 xiii) 0 iul n 0

uiin Ident? fi<<ation of Pal luruu

~iiaP:<<l urLuobvd Il!lli: (ir ','.ii 1(t 'A 1.1:1(

Li 1 f 1.)'.R a 2 Refueling Outage (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />)

(I start/test) 0 100 100 1 )lou) l.l'.ll i' Hiac. Teclr Spec ttert d leu ts (Start Only)

(I start/test) 10()

100 1 mr)

'l';it> I <<.

3 t.'o.

9 DC Actual Dvuiand Sturtu not for Tcuting SIAS Signal (I hour) 0 0

Ji ll Multi~ le stort of 3 DGs ktiucellaneouu Teats (Specify Type)

Verify Itepairu (no t full tea t)

(S tart Only) 6 0

0 0: lw

'1'utile 3 J'0

TAIII.I," 2 (Sau>p Iu)

Diesel G<<>>orator Sclied<<lcd Downtlaic II cord Calendar Year l9 I ncl os>>re 1 Pape 8

I'lant liame Unit IIo.

lloiirs of Downtime Reason for Downtime Scl>cd>>lcd I'Ialnt c' a>> c e 2

VC 3

Ilcactor siiutdow>>

DIj D(I 2

DC Itcactor nor. sl>>it<town DC Commentis I'revcnt lvc Ha lntel'Lillice Sca>i-a>>nual Annual 24 16 Equ lpmcnt klodiflcation Hodlfied 3.>>be oil on each diesei.

Diesels dowi at different times.

Time Pg is unavailable for emerl,cncy scrvic~

because of required tests Down 4 hrs per test 40 48 Diesel ca>>>>ot be automatica1ly

.tarted durlnp test or.for ti>ree I>ours ai tcrwards

'IAI)I.V. 3 (Sun<pic)

Diesel Generator unu<<heduied I)ownll<ue ltccord Culcnuur Year 19 Iynelosure I a'.-.t;e 9

~ a l'lant liame Unit <Io.

1<'-2 -,

I.LR hbs t rue t H<

(Itrfcr t:o nttcl cd LI'.ll Ab"trnct Downtime llours Total lionra

'l'roub1 c Dcl

~ art.u, a~hoor<a

<~vcc ace ltepai r/

ic <<ncc Coanaaco

<~IAy o Qia raporLe~ilaQn:.aa nouTJ noc hava ii.an a fnilurc under emer);cncy condit.'iona, please crplr kn hc.-e.

ttcfcr to attached.

I.L'tts or the failures listed in Tan'e i.

1 2

3 4

5 6

7 8

Ho I,EIL 9

10 4

3 I2 0.

0 0

0 0

0 0

1 0.5

,1 0

0 0

0 0

0 0

1 1

10 0

0 0

0 0

0 0

2 1.5 1

0 0

0 0

0 0

0 I)lesel started in 15 uec instead of required 10 scc Secondary air pressure low.

I'rimaty air satisfactory.

Secondary air prcssure low.

1'rlmary uir satisfact:ory.

Diesel started in 20 uec instead of required 10 sec.

I'aloe l)G start uil,nal.

I)G sat!.ufactqry Itcqulre<l DG st:arts after the Eallurc of one diesel.

Starts to verify repairs.

TAI5LL! 4 (8amllle)

L'<luipa<eut or pLoc<'duLe alodi fIed Date of Mod.

Onsite L'marl,< ucy Di<'.s< ~ L ('uuer'ltor uud Auxiliary L'quLpmeut Modiflent.iou R<<cord a 'on fDL Mo<lificlltion aud D<'.sir<<d Iml)rovem<<nc 1'.>><.losnre 1 - Page 10 1'1:ult N;)ale Unit No.

Descript 1<)u of Modification Lube oil system 2/76 Iu)prove turb'o charger lubrication for emergency scarts.

A Soak-l>ack pump was rum<)vcd and replaced with a continuous lube oil pile)p.

New pump also continuously lubricates the crankshaft.

Relay cabinets l/78 Prevent dirt from fouling relay contacts.

Cabinet doors wich gal;kucs were installed.

InJ t L Ullrent Relocation 6/79 L!liminate vibration damage to i.nstruments Control and monl.toriug instrument panel wa.

relocated from the <<ugln<<skids to a free standing panel lllountud on the engine room floor.

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