ML20009F065
| ML20009F065 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 01/19/1978 |
| From: | Moore G DUQUESNE LIGHT CO. |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20009F064 | List: |
| References | |
| TAC-1228, NUDOCS 8107280646 | |
| Download: ML20009F065 (3) | |
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(412) 471-4300 435 Seath Avenue Pittsburgh, Pennsylvansa 1$219 J anuary 19, 1978
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i United States Nuclear Regulatory Commission J
Attention: Director of Nuclear Reactor Regulation kY
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Washington, D. C.
20555
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Reference:
Beaver Valley Power Station, Unit No. I
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Docket No. 50-334 f
License No. DPR-66
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Response to Diesel Generator Questionnaire N-(*,.
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Gentlemen:
In response to your letter regarding the reliability of standby diesel generator units is the attached completed copy of the questionnaire.
i If you have any questions concerning the responses to the questionnaire, please contact Mr. J. J. Carey at the reactor site as listed on the 3i attached sheet.
I Very truly yours, G. W. Moore General Superintendent j
Power Stations Department Attachments
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780260091 8107280646 810721 PDR ADOCK 05000334 P
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Are any foreign gases such as propane, freon, halon, carbon dioxide, etc. stored in the:
Diesel Engine rocm?
Yes No x _ or adjacent buildings? Yes x No If yes, (other than hand portable fire extinguishers), then identify gases and give approximate tank size.
3 Gases co, Volume (ft )
10 Ton Unit T.
Does control systen automatically bypass, i, emergency starting, any engine temporarily out of service for maintenance? Yes X
No (By clearance procedure)
If yes, then how many failures to bypass have occured?
None U.
Does the control system automatically override the test mode.under emergency conditions? Yes X
No Y.
Have repetitive mechanical failures occurred in any component part or subsystem of the engine, generator, or switch gear, etc.?
Yes X No If yes, then which part or subsystem?
Switcheear How many failures?
seven Give nature of failure.
Failure of output breaker to close (during manual operacion only).
W.
Would periodic (yearly or other) evaluation and/or testing by "outside exper ts" contribute significantly to the diesel-generator reliability? Yes No X
Give brief reasons for the answer. ~ Increased testine oniv degrades the equipment internally, tests and insoection presently conducted are more than adeauate for desien reliability.
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Give the accumulated time-loao operating record for each
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diesel-generator unit from installation tu the present C ',7:
(Running Hours):
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Preoperational test Date 9-18-75'(completion) 7-%-
@+6 4
i Engine Sury. Testing &
Emergency Total Cfet1
- Serial llo. :
fiainten::nce Hrs. :
and 0*her hours 7;' d No load : Loaded :
Service Hrs. :
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- DC #1
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- 72-D1-1070:
- 127.8
- 127.8
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- 72-El-1037:
- 118.5
- 118.5 m.> s
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~ r-for unloaded condition: hours cannot be determined
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Surveillance test load (percent of continuous rating)
,2850 m 2.
(100::)
3.
Give the projacted or planned time-load operation for each diesal-generator unit during the next 12 t.:enths.
- Surveillance &
Emergency Total
- Maintenance Hrs. :
and other :
Hours Tc.
Service Hrs. :
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,j, 17 hrs. :
2 hrs.
15 hrs.
Provide the following sunmary of the periodic surveillance testing 4.
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experience:
Starting date of surveillance testing (OL date) a.
Periodic test interval monthiv (man.-start)/18 rron. (outo-start)
Total number of surveillance tests performed 38 (man.)/3 (auto).
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Total number of test failures 12 (per diesel)1 2 c.
.,, u r failure to start 2
failure to accept load 9
0 failure to carry load 1 failures due to operator error failure due to equipnent not being operative curing emergency.- i r.._
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conditions 0
.' n Supply 1 copy of the surveillance test procedures with this
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completed questionnaire.
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