ML20009F149

Forwards Completed Questionnaire for NRC Reliability Study of Diesel Generator,In Response to NRC 771215 Request

ML20009F149
Person / Time
Site:	Browns Ferry
Issue date:	01/24/1978
From:	Niav Hughes TENNESSEE VALLEY AUTHORITY
To:	Office of Nuclear Reactor Regulation
Shared Package
ML20009F148	List: ML20009F149
References
NUDOCS 8107290249
Download: ML20009F149 (3)

Text

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Enclosure 3

' TENNESSEE VALLEY AUTHCRITY CH A TTA N.CC 3 A. TEP .IS f;E 37401 4

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pp J g/yganuary 24, 1978' j-7073 s (f#"'ye:4 d:li

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Director of Nuclear Reactor Regulation , A3 U.S. Nuclear Regulatory Cotanission ' N' ;

Washington, DC 20555 11h Centlemen:

QUESTION AIRE FOR NRC RELIABILITY STUDY OF STANDBY DIESEL GENERATOR UNITS In response to Karl R. Goller's letter dated Decem~er u 15, 1977, on this subject, we are enclosing the completed questionnaire.

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A supplemental report will be st.bmitted on those items for which we could not readily obtain information.

Very truly yours, TENNESSEE VALLEY A ,UTHORITY N. B. Hughes, Jr.

Manager of Power Enclosure l

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49 810720 I

D F M 05000259 i PDR 780310270

- An Equal occartunity Emp; oyer l

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. .q S. Are any foreton cases such as propane, freon, halon, carbon

.'.' . dioxide, etc. storea in the: Diesel Engine room? ,

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-,R Yes No X or adjacent buildings? Yes X No 4 If yes, (other than hand portable fire extinguishers), then Il identify gases and give approximate tank size.

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.., Gases Volume (V1 ) Tons

.f-s if xp 17 tons y Liquid coo - U1 and 2 6 tons 3 Liquid CO, - U3

.I Does control system autenatically bypass, in emer9ency 1 T.

starting, any engine temcorarily out of service for

,] -maintenance? Yes No X

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If yes, then how many failures to ' bypass have occured?

k U. Does the c,ontrol system automatically override the test g . mode under emergency conoitions? Yes X No j .

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.V. Have repetitive mechanical f ailures occurred in any ccmoonent part f .or subsystem of tne engine, gene,rator, or switcn gear, ecc.?

-I Yes X No - _ - . -

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0 Air start motor system

.If yes, then which part or subsystem?

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.a .How many failures? _

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.I Give nature of failure. Forcinn material in air start system gets 1.

I in valves and air start motor vancs.

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} Would periodic (yearly or other) evaluation and/or testing A W. .

'by "outside experts' contribute sicnificantly to the diesel-( generator reliability? Yes No X

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a We have developed. ,

( Give brief reasons for the answer.

a good maintenance program with trained personnel.

are contacted upon necu casts.

Vendors

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x, 1. Give the accumulated time-load ocerating record for each diesel-generator unit frca installation to the present

'i (Running Hours):

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..f suppicmental report if Preoperational test Date

.f data exists.

Sury. Testing & : cnergency  : iotai :

Engine  : -

4..k Nintenance Hrs. : and Other  : Hours :

4  : Serial No. : Service Hrs. :  :

: No Load : Loaded :  :

h:#  :  :  :  :

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c'2  :  :  :

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."h Surveillance test load (percent of continuous rating) 757.

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-y 3. Give the projected or olanned tice-loaf 60eration for

-each diesel-generator unit curing the next 12 :::ontns. - Approximate

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c.ergency'  : iotal  :  :

Surveillance 4  :  : ,

and other : Hours  :

liaintenance Hrs. :  :

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.i Service Hrs. :

- 13 .

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18 .- .

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ry  :

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"'I U 4. Provide the following sunma'r'y o'f the peric'dic surveillance' testing m exp.erience: _ _ . . _ . . _ . . _

-.g g. , g Y , A. . Starting date of surveillance Monthly testing (OL date)U1 U3and - 11/21/75 2 - 262

b. Periodic test interval U3 - 113

c. Total number of surveillsnce tests nerformed(see Abnormal occurrence mj 7

4. Total number of tegt failures

$ Reports)

'h Tailure to start 5

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failure to accept ic;d 0 _.

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• failure to carry loaa e failures due to coerator error 42 .

failure due to equionent not being operative during emergency I o .

____ conditions 3 '

Supply a copy of the surveil' lance test procedures with this

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o completed questiorinaire. - (attached)

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