ML20009D316
| ML20009D316 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/19/1978 |
| From: | Baskin K SOUTHERN CALIFORNIA EDISON CO. |
| To: | Goller K Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML13330A349 | List: |
| References | |
| NUDOCS 8107230370 | |
| Download: ML20009D316 (4) | |
Text
m-Southern California Edison Company 3~5 P. O. BOX 800 2244 WALNUT GROVE AVENUE ROSE ME AD. C ALIFoRNI A 91770 K. P. s ASKIN TELEPHONE January 19, 1978 2is-s72 i40s bD N
Director, Office of Nuclear Reactor Regulation D'
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Attention: Karl R. Goller
[f, hk Assistant Director for Operating Reactors
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.U4 g g Division of Operating Ranctors U. S. Nuclear Regulatory Commission
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.8 Washington, D. C.
20555 cgo 0 w oe, s!
iN Gentlemen:
C) 4dTi&' g
Subject:
Docket No. 50-206, Provisional Operating License No. DPR-13 Standby Diesel Generator Reliability Questionnaire San Onofre Nuclear Generating Station Unit 1 In accorc'.ance with your letter dated December 15, 1977, sub=1tted herewith is one completed copy of the enclosure forwarded by that letter entitled, " Questionnaire for Nuclear Regulatory Comission Reliability Study of Standby Diesel Generator Units".
As requested in your December 15, 1977 letter, the individual at San Onofre Unit I responsible for completing the questionnaire and responsible for responding to any follow-up comunications concerning the questionnaire or for arranging a site visit is Mr. J. M. Curran, Plant Manager.
Mr. Curran can be con-tacted in writing at the following address:
San Onofre Nuclear Generating Station, Unit 1 Attention: Mr. J. M. Curran Plant Manager Post Office Box 128 San Clemente, California 92670 Mr. Curran can also be contacted by telephone at (714).492-7700.
780270038 Y
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8107230370 010709 PDR ADOCK 05000206 p
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20-s S.
Are any foreign gases such as propane, freon, halon, carbon dioxide, etc. stored in the:
Diesel Engine rocm?
Yes __
No
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or adjacent buildings?
Yes No
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If yes, (other than hand portable fire extinguishers), then identify gases and give approximate tank size.
3 Gases Volume (f t )
Iyb/N l
J T.. Does control system automatically bypass, in emergency starting, any engine temporarily out of service for maintenance? Yes No If yes, then how many failures to bypass have occured?
NA I
U.
Does the control system automatically override the test mode under emergency conditions? Yes
>(
No V.
Have repetitive mechanical failures occurred in any ccmcenent part or subsystem of the engine, generator, or switch gear, etc.?
Yes No 1 If yes, then which part or subsystem?
f44 How many failures?
P44 Give nature of failure.
BJA l
i b
Would periodic (yearly or other) evaluation and/or testing l
W.
l by "outside experts" contribute significantly to tne diasel-generator reliability? Yes No
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l Give brief reaser.s for the answer.
()siis Luxv, been
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i reliable l
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1.
Give the accumulated time-load cperating record for each diesel-generator unit from installation to the present (flunning Hours):
Preoperational test Date Ay,l lM7 Engine Sury. Testing &
Emergency Total
- Serial !!o. :
Maintenance Hrs. :
and Other Hours No Load : Loaded Service Hrs. :
- 75041-c338:
3 I3 22.7.
- 2.38 hse +t-tso4; 3
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75 i
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2.
Surveillance test load (percent of continuous rating) 75 j
3.
Give the projected or planned time-load operation for each diesel-generator unit during the next 12 months.
- Surveillance 4 Emergency Total
- Maintenance Mrs. :
and other Hours Service Hrs. :
1 C
ZS 15 Provide the following sunmary of the periodic surveillance testing 1
i 4.
experience:
Starting date of surveillance testing (OL date) 4h /?7 I
a.
l b.
Periodic test interval ma%lv Total number of surveillance tests performed a) l c.
l d.
Total numer of test failures o
failure to start failure to accept load failure to carry load f ailures due to coerator error M
failure due to equipment not being operative during eme gency condi tions
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tnis d
Supply a copy of the surveillance test procecures with t
ccmoleted cuestionnaire. gg t
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22-Additional Comments ope rd ma fee onl "iEese wniis kve been y
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led cowed.sg e> m e.,%
ud necelare we w Yb 4h ese. u ds.
enomence Y,
General Succestions Briefly give constructive criticism or suggestions as toThese}4 impravement in reliability of the diesel generators.
remarks may cover tests, maintenance, practices, orders, policy, adjustments, etc.
j Notes:
1.
The following relays are provided for diesel-generator protection:
(all are bypassed during emergency operation) high crankcase pressure low-low engine lube oil pressure high-high water temperature high vibration low-low turbo oil pressure l
high main bearing temperature loss of field exf.tation negative phase sequence under frequency directional pover overcurrent t
over voltage stator-ground f
2.
Routine Mainterance is accomplished by a cocouter controlled system l
of preventative maintenance orders.
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