ML20009F427
| ML20009F427 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 02/14/1978 |
| From: | Andognini G BOSTON EDISON CO. |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20009F426 | List: |
| References | |
| 78-26, NUDOCS 8107310135 | |
| Download: ML20009F427 (3) | |
Text
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i sosroN co:5CN CCMPANY GENanA4. orrtcts 800 SSTLaToes STmECT S G STO N. MASSacHu9CTTS oaI99
- 3. CAmb ANCOGN4NS g'
.0ANAGER qucLEam omCmAttcNS CEPamTMENT e'
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Zn, February 14, 1978 Q'1 l
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BEco. Ler. #78-26
.C Ud 7
l Director of Nuclear Reactor Regulation
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i U.S. Nuclear Regul'atory Com:21ssion d
l Washington, D. C.
20555 Docket No. 50-293 l
License No. DPR-35 l
l Reliability Study of Standby Diesel Generators
Dear Sir:
In letters dated December 15, 1977 and January 3,1978, power reactor licensees i
were requested to complete a questionnaire on standby diesel generators. The l
attached questionnaire for the Pilgrim Nuclear Powe,I Station diesels has been ec=pleted and is hereby submitted.
3osnn Edison Conpany regrets the delay in transmitting the survey results, however, due to some c: mission we were not aware of the request for such in-l for=ation until receipt of your January 3, 1978 letter.
At that time appropriate steps were taken to obtain a copy of the questionnaire and begin ec= piling the responses.
We trust that this infor=ation will contribute to the reliability study.
If additional infor=ation is required concerning this subj ect please contact the
[
individual identified on the cover sheet of the question = aire.
l l
Very truly yours, l
/
l :l; ['gh'u b ret u-
.Yj' 7?C550015 l
h IO, I
D Attachments
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8107:.s10135 810720 PDR ADOCK 05000293 p
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20-Are any foreign cases sucn as pro;rane, freen, halon, carbon S.
dioxide, etc. storec in the:
Diesel Engine roem?
Yes flo or adjacent buildings? Yes f!o If yes, (other than hand portacle fire extinguishers), then w.....,'
identify gases and give approximate tar.k size.
3 Volume (f t )
Gases Does control systect autenatically bypa:s, in cmergency starting, any engine tem;orarily out of service for T.
maintenance? Yes __
fic _p <'
If yes, then how many f ailures to bypass have occured?
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Does the control system aut:matically overritie the test
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raode under emergency conditiens?
Yes j."'
!!o Have repetitive mechanical f ailures occurred in any com:onent part.
or subsystem of the engine, generator, or switen gear, eti.?
V.
n !!o Yes 10 r/c3 _,
if yes, then which part or sJbsys tem? 5'ri.A. -,WA "T.:
How many failures?
'/
Ka weie c,x-Give nature of failure. At*La d f-
':ould periccic (yearly or other) ovaluation and/or testing by "outside experts" contribute significantly to the diesel-generator reliability? Yes g lio g,..
'NS Give brief reasons for the answer. Av.<ww/%).b Pe:Je.w.sti is 6Asin. c e":,%c cc < :+-c r, se n
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..y
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21 X.
1.
Give the accunulated tir.e-load ccera-ing recore f:r each diesel-generator unit from insta,1.lati:n to the cresent (Running Mcurs):
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Preoperational test Date m /7c.
Engine Surv. Testing &
inargency Total
- Serial No. :
liaintenance Hrs. :
and Other Hcurs No load : Loaded Service Hrs. :
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N.
~
2.
Surveillance test load (percent of cortinucus rating)
/ ; 'c-3.
Give the projected or clannec tice-1cid coeratica for eaca diesel-generator unit during tne text 12 cenths.'
- Surveillance &
Ecergency
' ctal
- flaintenance Hrs. :
and other :
?.cu rs Service Mrs. :
- cac m:: A_x
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c<
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- 52.'.N L-S :
e' re' W.
- .m c < e c o 4.
Provide the follcuing succary of the iriccic surveillance testing experience:
'D
'J 77-Starting date of surveillance testing (OL date) a.
b.
Periccic test interval
/ '55% v Total number of surveillance tes 3 :erformed i
c.
d.
Total nuceer of test f ailures m
L;":
failure to start f aii re to accept load i
failure to carry icad f ail.res due to c:erator errc:
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f ailure due to ecuir, rent not bein; perative curing cecrgency condi tions e.
Supply a copy of tna surveillarce test peccecures with this -
concleted questionnaire.
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