ML20009C818

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Forwards Completed Questionnaire Re Reliability Study of Standby Diesel Generators,Per Kr Goller 771215 Request. Responses to Questionnaire Address Unit 1 Diesel Generators. Requests Results of Reliability Study
ML20009C818
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 02/08/1978
From: Tillinghast J
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: Case E
Office of Nuclear Reactor Regulation
Shared Package
ML17319A966 List:
References
NUDOCS 8107220008
Download: ML20009C818 (18)
v • d • e


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,i:.a P.O.50Xla S 0 wl.!NG G R E EN ST AT tCN t4 E 4 Y O R K, H. Y. Im4 February 8, 1973 Donald C. Ccok, Nuclear Plant Units 1 & 2 Docket Nos. 50-315 and 50-316 DPR Nos. 53 and 74 Mr. Edson G.

Case, Acting Director Office of Nuclear Reactor Regulation U.

S. Nuclear Ragulatory Ccmmission Washington, D. C.

20555

Dear Mr. Case:

Thi's letter is in response to Mr. Karl R. Goller's letter dated December 15, 1977 which requested response to the questionnaire for the reliability study of the standby Diesel Generators by all Pcwer Reactor Licensees.

Enclosed please find a completed questionnaire for the Diesel Generators at the Donald C. Cook Nuclear Plant.

Since we have not had any significant operating experience on the Unit 2 Diesel Generators, the responacs to this questionnaire are addressing the Unit 1 Diesel Generators.

Although there are small differences in the control cir-cuitry between the two units, the Diesel Generators them-selves that ar1 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, I

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g.

TI lingnas

' ice President JT/mab

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Sworn and subscribed to'before me this /** day of February,1978 in

[

New York County, New York gi

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Notary Public

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'.. a cay focaf en gises such as prepa'n, fen:t, h.tlon, ca. ht

,/r dicy.ide, etc. stored in the:

Diesal Engina rec:.i?

c_ No

_ cr diacent buildings? Yes

c ?:o Yas 11 yas, (other than hand portable fire 4xtiaguishers), ch.a id.itify gases and give appro.,iaate tank size.

3 G.isas Ya ltr.e ( f t ]

L T.

Coas control systic cutc.,atica'l'y bypass, in eaargancy st:rting, any angine tc.-?crarily out of scrifce for

intear.nca? Yas

__ No 91.

I? yas, ch;.1 br.1 cit.y failures to byp::s hr;c-occurad?

U.

Oc s the ccatrol systri cutcmatically overrida the test r.:d2 undar e:.:crgaecy conditions? Yes I:o x

  • /. !!cyc rapatiti;c wehanical failuras cccurred in any cc\\=;cnant part cr su'c;ystri cf the engine, generator..orritch gcar, etc.?

Yes X

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if yas, then..hich part or subsystaa? nteJjn :4,- _g i m, gn y

';!ci c.any failuresJ 20 Give nature ci icilure. Stickino/laat-4 7

p. mew 4 Sees.

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'd. '!culd periodic (ycarly or other) evaluatien and/or testing by "outside experts" contribut'e significantly to the diesel-generator reliability? Yes No y

s i

Give brief reasoM for the answer.

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Give the acc: ':!

M tf. :-le:d carating racord f:e :r:h

. inal-ganaratar : nit feca installation ta tha prerant (tu.ining Hours):

. ra:perational tast Data

'i Engine Sury. Testing &

Emergency Total

Serial Ho, :
aintenance Hrs.

and Other Heurs No. cad : Lcaced Service Hrs. :

.'10-3671 4

.10-3569

[VO'i672 I

.VO-3670 2.

Surveillance tant load (percent of continuous :ating) 50%

3.

Give the projected or planned time-load operation for 2.ch riiescl-generator unit durinr the next 12 acnths.

s l?.irveillance &

Emergency Total

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';iatenance Hrs. :

and other- :

Hours i

Service 1:rs. :

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50 8

58 4.. Provide the following summary of the pericdic survei.llance testinp-no experience:

Starting date of surveillance testing (Oi.~date) 10/25/74 a.

b.

Periodic test interval 31 days

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c.

Total nun.ber of surveillance tests performed 150 GST) d.

Total number of test failures None-failure to start failure to accept load failure to carry lead failures due to coerator error -

failure due to equipnent not being operative during emergency l

conditions e.

Supply a copy of the surveillance test procedures with this j

completed questiennaire.

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  • Available for on-site inspection caly.

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LReason for DG C;aration and' Scheduled Our.icica of Run: This column centrics the diffarent cata;ories of diecci sentrator opsration. The catagoriaa are structurad such that the start and run conditions are si-ilar for all of the tests in a'cata;ory.

In this eclura, *.ntar the sch22ulad run duration for cach of the cast cati trias, tisc entar the nunber of-diesel sen3 rater starts that ar? d:Ee f r 3?:S t;;e of ;ast.

?cr exn:ple, if.cn the centhly tast thera is cia start f::: :Se lect 2:n-trels and cne start fren tha renote centrals, the nurber cf stsrts cghn

.per test is two.

If two or more dia els ars startad sinultane:usly cS for any reason, please record it as a cultiple start.

1X; No.: I ntar each' diesel generator's identificacica nerbar in this coluen

^

E as'shevn in tha ens:ple.

Ndr'rarofSt. sets: Eater the sen of the suceresful. and unsuecassful st art setarpts 'for'esch catagory.

If thera are savaral starts for each case, include all of then, but be cartain to raccrd the number of starts per test in column one.

~ Number of Tsiluras: Intar the sun of the failuras for each category. A failure is counted if the objectives of tha tast are net achi2ved. A subsyatan failura that dees not cause failura of the diasal u. -rator

~ system is not cointed as 2 failure.

If tha diesel 32nerator d'.3 met start, run, and locd as requirtd ly the tast, a f ailure sh:ild be

'icucver, if the diacal 3 raracar "culd 'wie suppliad ;cuer 4

recorded.

in scue capacicy for an c Or;ency, pla:se explain in 7:b12 3.

For exa=ple, if the dienci start ad cn tha ceccad att:-npt er tha dicaal was t ipped to repair a niner ' oil leak that veuld not have basa a problem in an e=er;cacy, this sheuld be noted in Table 3.

- 7ercent Loading of DG (r4): Incar the percenta;e that the diesel is loaded for esch category. The centinueus kilevate rating is ccasidered to be 100%.

Juratien of Kun 3efore Stop for each DG Failure: Record the run-time for each failure. If the diesel failed to start, the run-time would he 0 min.

Identification of Failures: Attached to this questi:nnaire are abstracts of the LERs related to the diesel generators. The abstracts are numbered starting with one. Refer to this nu=ber to identify the failures, but if there was a failure for which there is no abstract, assign the failure a nu=ber and include it in Table 3.

Table 2 Reason for Dcwnti=e: Enter in this colu:n the categories of schedule nain-tenance-that =ake the diesel generator unavailable for emergency service.

If the diese1' generator is unavailable for emergency service during surveillance testing, report that also.

e e-E,cl a n e 1 -~ 2 1:,a 5 2

Table 2 (cont'd)

Enterthenumberifkloursthat the diesel grar ter Zurs of Oevntica:

is enavailable for o.:ergancy sartice.

Report the hours under :ha colu=n reactor shutdevn or reactor not shutdown as appropriate.

j Cc-=en t s : ' Co==ent on ti_e to return to service af ter maintenance has

~

Segun, or other pertinent-information.

O 7 6.'. e 'l LER Abstract No.'(Refer to attached LER Abstracts):

The attached L1Es are nu= bared' starting frc= ona. Refer to this LER nu:bar in column Each LER abstract;should have an entry in this.cabis.

If one..-

thre was a failura not included in the attached abstracts, pinsa assign it a'nu=ber and enter it in this table.

Ccentica Hours:.En;ar ths nu=ber'of hturs that the ditsal'3enerater is unavailable for energency seriice.

Su': divide thesa total hours tinto troubleshooting, parts delivery, and repair or replacement.

~Cd:=ents: Use this.colu=n to cenzent on the do mtice and the failure, fIf tha-reportad failure was caly a technical 7pociff.c..itien violation, but veul.1 not be a'ce:plete failure of the dia:el 2,anarstor to supply power or vould enly be a delay, pleue elaborate in ' tis colucn.

Table 4_

Equiykntorprocedurecodified: List in this coluen the equipaent or procedures related. to the neergency onsite pcver systa= that have

'bcen n'odified since the reactor beca e critical.

Date of Mod.:

Enter the date that the = edification u:s co:pleted.

Reason for Modification and Desired != prove =ent: Report the reason for the =odification'and the desired or observed i=provement in the sys te:.

Description of Modification: 3riefly describe what =odification was

=ade.

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. Euclo.sure ! - Ptag,e 7 TAllt.E 1 Dicycl Cenurutur @uret luna Dr,tn I'la it tena.e

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Calendar '.* car l';/6 Unit llo.

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Is. scat.ua oi ; tau:

Reasons for DG hu uer Hu ue. '

1*e reent o f ll,1:e f o re S t op 1*u r

' Ident t ileat ion of F.4llure:,

Operation, di selieduled DC of-of 1.oad16q:

E.u li In: a.i t l u re.

(iti f. r t o u r i netw.! !.v:t s o c */. i.. < ~1)

Duration of Run No.

Startu

tail u re
.

1)G '(KU)

Te cle. Spec Reig'd Test.

l

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tiontlily Surveillance t

32.

2 100 3a mgn; o 3,,g n 3,y:; g g ;, 4 (l liour) j i2 o

l inn (I stort/ test) 3 12 1

100 0 suin 1.E:t 52 o Refueling Outage 1

1 0

100 1

0 100 (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />) 3 1

1 ION 1 lueur 1.Ea f 'l (Istart/ test)

Hloc. Tecli Spec 1

2 0

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4 0

103 (Stari Only) 3 2

a l i..

(I stort/ test)

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DG Actual Demand Starts not for i

3 Testing SIAS Signal 1

1 0

0 i.Eu $ :L Multiple start ci 3 DGs (l 1.aur) 7 I

U 0

3 1

0 0

6 litueellaneous Teste (Specify Type)

Verify Repairs 1

(.

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Enclosure 'l -- Page' E TAlli.E 2 l'lant !!asne ' -

J (Sample)

Dieuel Generat or' Scheiluled Downtime Record.

Unit ilo.

Calcudar Year l'J_

llours of Downtine Commentu Huason for Henctor shutdirm

. Reactor not' hutdoun

~

Downt line T;f DUT 7.' T ~lfC#

DO#

11 #

.GJ DG#.

1107,

1)GF 1

2

'l T

7 3

Scheduled flaintenance

}'revent ive 24 16 16 tialutenance Semi-nanual &

Annual Equipinent tiodification ~

8 8

8 11odified lube oil on each diesel. Diesels down at different times.

1 Time DG la unovoilable for emergency servico because of required testa Down 4 hrs per test 8

48 40 48 ninnel c;.unut be autoaatica.ily scarted g

duri..:; tes t or fur three hours af t es wacd:.

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. - Page 10 d

TAllt.E 4 Onsite Eueri.. ney Diesel Cunerator and Plant 14.nao (Sample)

Aux 121ary E..aip.aent tiodifteation Record lin i t No.

E.guipmen t or Date of

.teason for flodlilcation and procedure tiod.

Desired Improvement Description of flodification modified Scak-1 ack pump wa:a s e. oved and replaced witti a Lube o*1 system 2/76 luprove turlio charger lubrication 4

for en.orgency starts.

conclauoua lube oil p aap.

New pium aluu continuously lubricateu tlie crankshaft.

Ralay cabluets 1/78 Prevent dirt f rom fouling relay Cabinet doors with gaukets were installed.

contacts.

Inutrument 6/79 Elluinate vibration dainage to Control and monitoring lust rin.ient panel was Helocation instruments relocated f ro.a the ent:ine ukida to a free standing panel mounted on the engine roona floor.

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