ML20009C829

Forwards Partially Completed Questionnaire Re Emergency Diesel Generators Per 771215 Request.Completed Questionnaire Will Be Supplied by 780220

ML20009C829
Person / Time
Site:	Nine Mile Point
Issue date:	01/20/1978
From:	Dise D NIAGARA MOHAWK POWER CORP.
To:	Goller K Office of Nuclear Reactor Regulation
Shared Package
ML20009C827	List: ML20009C826 ML20009C829
References
NUDOCS 8107220025
Download: ML20009C829 (3)

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Enclosure 3 M Y NIAGARA RUMOHAWK NIAGARA MOH WK PoWEA CORPORATION /'C0 E%E SCULEVARD WEST SYRACUSE, N Y 13202/ TELEPHONE (315) 474-1511 canaec P Cese Vic) 'MS; dent Engineenng January 20, 1978, ' '~"' ,

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4ljlPeer Director of Nuclear Reactor Regulation Attn: Mr. Karl R. Goller /

Assistant Director of Operating Reactors . f'

%C.M Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington,.D. C. 20555 Re: Nine Mile Point Unit 1 Docket No. 50-220 DPR-63 Gentlemen:

Your letter of December 15, 1977 requested information concarning the emergency diesel generators at Nine Mile Point Unit 1. It was requested that available information be supplied by January 20, 1978.

At the present time, only a partial response to your request can be made. A partially-completed questionnaire is attached.

A completed questionnaire will be supplied by February 20, 1978.

Very truly yours, NIAGARA MOFXJK P0rrR CORPORATION

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Donald P. Dise Vice President-Engineering - - - - - - - -

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S. - Are any foreien cases such as propane, freon, halon, carbon  !

dioxide, etc. stored in the: Diesel Engine roem?

• I

' No -X or adjacent buildings? Yes No X l Yes 1

! If yes, (other than hand portable fire extinguishers), then identify gases and give approxicate tank size. .

3 Volume (ft )

'{ i Gases 8 .

1

' T. Does control system automatically bypass, in emergency i starting, any engine temporarily out of service for maintenance? Yes No X . Bere is only cne diesel generator a

' cn each emergency bus.

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

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U. Does the control system aut:matically override the test mode under emergency conditions? Yes X No V. Have repetitive mechanical failures occurred in any c =ponent part or subsystem of the engine, generator, or switch gear, etc.?

Yes No X If yes, then which part or subsystem?

How many failures?

Give na*wre of failure.

W. Would periodic (yearly or other) evaluation and/cr testing by "outside experts" contribute significantly to the ciesel- .

generator reif acility? Yes X No Give brief reasons for the answer. Se vender se /iceran ,,

is core likely to spot developing trcuotes, & a sc cs

'rmcwlecce or currenc t::u.: orcoler.s en seiar tru.:s.

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X. 1. Give the accumulated time-load ocerating record for each diesel-generator unit from installation to the present

. (Running Hours):

Preoperational test Date 7/69

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.  : Engine  : Sury. Testing & : Emergency  : Total  :

j-  : Serial No. : Maintenance Hrs. : and Other  : Hours  :

^

No load : Loaded : Service Hrs. :  :

,- l 102  : 20* $ 200*~ . 290** i510*H  ;

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103  : 20*  : 200*  : 290**  : 510 *  :

- . i[  :  :  :  :  :  :

.-1 b 2. Surveillance test load (percent of continuous rating) 100

3. -Give the projected or clanned time-load c::eration for each diesel-generator unit auring tne next 12 montas.

Surveillance &  : Emergency : Total  :  :

Maintenance Mrs. :- and other : Hours  :  :

.  :  : Service Hrs. :  :  :

. I hr/conth . . . .

i per unic  ; ncne  ; 2L  ;  ;

.4. Provide the follcwing summarf of the periccic surveillance testing experience: -

l a. Starting date of surveillance testing (OL date) 8/69

b. Periodic test interval centhly

c. Total numcer of surveillance tests performed 129

d. Total nuacer of test failures ncne

, failure to start ncne failure to accept load ncne failure to carry loac nene failures cue to c::erator error ncne failure due to equi;nen: not oeing operative curing emergency conditions ncne

e.

• s Supply a copy of the surveillance Request test procecuras prececures wi*M s /04 L.7 and ccmoleted ouestionnaire.

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2 Nine Mile Point, T. J. Perkins-Superintendenc.

I 2.ese are estica:ed hcurs.

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!. *'ni.s wra used fcr peakins; prior to operaticn.

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