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| number = ML20009F318
| number = ML20009F318
| issue date = 01/18/1978
| issue date = 01/18/1978
| title = Forwards Completed Questionnaire Re Standby Diesel Generator Units Reliability,In Response to NRC 771215 Ltr
| title = Forwards Completed Questionnaire Re Standby Diesel Generator Units Reliability,In Response to NRC
| author name =  
| author name =  
| author affiliation = NEBRASKA PUBLIC POWER DISTRICT
| author affiliation = NEBRASKA PUBLIC POWER DISTRICT
Line 11: Line 11:
| contact person =  
| contact person =  
| document report number = NUDOCS 8107300287
| document report number = NUDOCS 8107300287
| title reference date = 12-15-1977
| package number = ML20009F317
| package number = ML20009F317
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
Line 17: Line 18:


=Text=
=Text=
{{#Wiki_filter:.                            __ _                          - - _ _ _ _ _ . . _ - - . _ - _ _ - - _ _ . _ .
{{#Wiki_filter:.
            .        /
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p p                                                                                               .e           d          losure 3
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o-             GENERAL OFFICE P. O. box 499, COLUMBUS, NEDR ASKA 68601
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        .n          Nebraska Publ.ic Power Distric
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!                January 18, 1978
"i GENERAL OFFICE P. O. box 499, COLUMBUS, NEDR ASKA 68601 Nebraska Publ.ic Power Distric reLe m o~c = >s....s.1
                                                                                                                                ..s l'.b.L?r N
.n -Q January 18, 1978 l'.b.L?r
Director, Nuclear Rcactor Regulation                                                                                 77 Attention: Karl R. Coller                                                                                 ,w               d 'f      -  ,V Assistant Director of Operating Reactors
..s N
                                                                                                                                    . kygY D
d 'f Director, Nuclear Rcactor Regulation 77
Division of Operating Reactors                                                                             p %.                 IS/
,V Attention: Karl R. Coller
U. S. Nuclear Regulatory Cornission                                                                       19          %f,g % g --          ,
,w Assistant Director of Operating Reactors
Washington, D. C.       20555                                                                               5'
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%f U. S. Nuclear Regulatory Cornission Washington, D. C.
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==Subject:==
==Subject:==
Standby Diesel Generator Study                                                                                         -
Standby Diesel Generator Study


==Reference:==
==Reference:==
Line 45: Line 51:


==Dear Mr. Goller:==
==Dear Mr. Goller:==
 
This letter is in response to the referenced letter which transmitted a questionnaire pertaining a reliability study of Standby Diesel Generator Units.
This letter is in response to the referenced letter which transmitted a questionnaire pertaining a reliability study of Standby Diesel Generator Units. It was requested that the questionnaire ba completed and one copy returned to your office by January 20, 1978. We have completed the question-naire and are submitting one copy, for your review and use, as an enclosure to this letter.
It was requested that the questionnaire ba completed and one copy returned to your office by January 20, 1978. We have completed the question-naire and are submitting one copy, for your review and use, as an enclosure to this letter.
Additionally, it was requested that we identify the individual responsible for completing the questionnaire, follow-up communications, or for arranging a reactor site visit. This individual is:
Additionally, it was requested that we identify the individual responsible for completing the questionnaire, follow-up communications, or for arranging a reactor site visit. This individual is:
Mr. L. C. Lessor Station Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska                                         68321 Phone (402) 825-3811 i
Mr. L. C. Lessor Station Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska 68321 Phone (402) 825-3811 i
i f0t d 8107300287 810720                                                                                                                     I PDR ADOCK 05003298                                                                                         0260o 3%
i f0t d 8107300287 810720 0260o 3 I
F                      PDR                                                                                                                                 i
PDR ADOCK 05003298 F
PDR i


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S. Are any foreign gases such as propane, freon, halon, carbon                   '
Are any foreign gases such as propane, freon, halon, carbon S.
dioxide, etc. stored in the:
Diesel Engine room?
pr_.
pr_.
dioxide, etc. stored in the:          Diesel Engine room?                        '
Yes x
or adjacent buildings? Yes           No X                     s Yes      x    No                                                              .           i d,f.
No or adjacent buildings? Yes No X s
                                                                                                              }t ,
,f.i d
If yes, (other than hand portable fire extinguishers), then                             Pp identify gases and give approximate tank size.                                         y 76 75 lb. bottles                   ;
}t If yes, (other than hand portable fire extinguishers), then Pp identify gases and give approximate tank size.
Gases      Carbon Dioxide      Volume                                                ti sw T. Does control system automatically bypass, in emergency starting, 2ny engine temporarily out of service for No  X maintenance? Yes
y Gases Carbon Dioxide Volume 76 75 lb. bottles ti sw Does control system automatically bypass, in emergency T.
'                      If yes, then hod many failures to bypass have occured?
starting, 2ny engine temporarily out of service for maintenance? Yes No X
U. Does the control system automatically override the test mode under emergency conditions? Yes           x   No V. Have repetitive mechanical failures occurred in any component part or subsystem of the engine, generator, or switch gear, etc.?
If yes, then hod many failures to bypass have occured?
Yes X No If yes, then which part or subsystem? copoer tubing How many failures?             Three Tubing develooed leaks, was reolaced Give nature of failure.
Does the control system automatically override the test U.
with stainless steel and no leaks have occurred since.
mode under emergency conditions? Yes x
Would periodic (yearly or other) evaluation and/or testing U.                                                                                             f33
No Have repetitive mechanical failures occurred in any component part V.
                                                                                                                    <I by "outside experts" contribute significantly to the diesel-generator reliability? Yes           No x
or subsystem of the engine, generator, or switch gear, etc.?
* sj p[[
Yes X No If yes, then which part or subsystem? copoer tubing How many failures?
Give brief reasons for the answer.                             ----
Three Give nature of failure.
                                                                                                                    ]d, 94
Tubing develooed leaks, was reolaced with stainless steel and no leaks have occurred since.
                                                                                                                    +
Would periodic (yearly or other) evaluation and/or testing f33 U.
b l
by "outside experts" contribute significantly to the diesel-
<I generator reliability? Yes No x sj p((
Give brief reasons for the answer.
]d, 94
+
b


              .              y
y
                /
/
                  /                                                                                                                             l 1
/
              /                                                   -
/
21-l l
21-
            '                                                                                                                                    1
/
/
X. 1. Give the accumulated time-load operating record for each                                                     -
Give the accumulated time-load operating record for each X.
diesel-generator unit from installation to the present                                           .. . .
1.
.                                                                                                                            11 (Running Hours):
diesel-generator unit from installation to the present 11 (Running Hours):
1-11-74 Y)
Y)
  -                        Preoperational test Date               .                                                        01 Sury. Testing & :              Emergency     :    Total   :              7     .
Preoperational test Date 1-11-74 01 Engine Sury. Testing &
:       Engine    :                                                    :    Hours  :              . !1 Maintenanca Hrs. :             and Other
Emergency Total 7
:Seria! Ho        :
:Seria! Ho Maintenanca Hrs. :
:      Service Hrs. :              :
and Other Hours
                          -                  :    No Load        Loaded
!1 No Load Loaded Service Hrs. :
* IL~ -
IL~ -
0              336    .
7103 UN 336 0
7103 UN             336   .
336 UN
0              320      l UN     {
{
320     j                     l
320 j
: l. 7102                                         :                      :            :
0 l
35
320 l
: 2.      Surveillance test load (percent of continuous rating)
: l. 7102 35 Surveillance test load (percent of continuous rating) 2.
: 3.      Give the projected or planned time-load operation for each diesel-generator unit during the next 12 months.
Give the projected or planned time-load operation for 3.
Total  :                    :
each diesel-generator unit during the next 12 months.
:  Emergency           :
: Surveillance &
: Surveillance &                                        Hours  :                    :      .
Emergency Total
:llaintenance Hrs. :         and other           :
:llaintenance Hrs. :
:                      : Service Hrs. :                        :                    :
and other Hours
:                                    0                   40    :                    :
: Service Hrs. :
40         :                        :
40 0
: 4.        Provide the follceing sunmary of the periodic surveillance testing experience:
40 Provide the follceing sunmary of the periodic surveillance testing 4.
1974                      #
experience:
: a. Starting date of surveillance testing (0L date) Jan.                                                   .
Starting date of surveillance testing (0L date) Jan.
monthly                                                      I
1974 a.
: b. Periodic test interval                                                                                 l j
b.
c.
Periodic test interval monthly I
l j
Total number of surveilTance tests performed
(
210 c.
d.
d.
Total number of surveilTance tests performed Total number of test failures                 7 210 (1i:   !
Total number of test failures 7
l*                                                                                                                                   3
1i:
  ;                                                                              failure to accept load _ o failure to start _ 4 failures due to operator error       o               ;ft'g
l*
    ,'                                failure to carry load           3                                                                     E' failure due to equipment not being operative during emergency                                     N'     ,
3 failure to accept load _
conditions           0                                                                             L. .
o failure to start _
: e. Supply a copy of the surveillance test procedures with this completed questionnaire.           See attached.
4 failures due to operator error o
l O
;ft'g failure to carry load 3
E' failure due to equipment not being operative during emergency N'
conditions 0
L..
Supply a copy of the surveillance test procedures with this e.
completed questionnaire.
See attached.
O


  -  .          7             .. g t
7
    ,-                                        -2 2-Additional Comments     ,
.. g t
We have listed UN on several frome-     tco k n 1 4 n m, 4"~~~
2 Additional Comments We have listed UN on several frome-tco k n 1 4 n m, 4"~~~
t4 the requested information does not warrant additinnni               ',        [,l ,
t4 the requested information does not warrant additinnni
[,l,
2.
2.
effort to obtain the information. If there is dis-                       (,
effort to obtain the information.
agreement on this matter, we will revaluate if contacted.                     [
If there is dis-(,
                                                                                            !I EL . . _
agreement on this matter, we will revaluate if contacted.
Y. General Suggestions Briefly give conetructive criticism or suggestions as to improvement in reliability of the diesel generators. These remarks may cover tests, naintenance, orattices, orders, policy, adjustmenti, etc.
[
!I EL.. _
Y.
General Suggestions Briefly give conetructive criticism or suggestions as to improvement in reliability of the diesel generators. These remarks may cover tests, naintenance, orattices, orders, policy, adjustmenti, etc.
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Latest revision as of 08:23, 21 December 2024

Forwards Completed Questionnaire Re Standby Diesel Generator Units Reliability,In Response to NRC
ML20009F318
Person / Time
Site: Cooper Entergy icon.png
Issue date: 01/18/1978
From:
NEBRASKA PUBLIC POWER DISTRICT
To: Goller K
Office of Nuclear Reactor Regulation
Shared Package
ML20009F317 List:
References
NUDOCS 8107300287
Download: ML20009F318 (4)
v • d • e


Text

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p d

losure 3 p

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[6,,. -

6' P'

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"i GENERAL OFFICE P. O. box 499, COLUMBUS, NEDR ASKA 68601 Nebraska Publ.ic Power Distric reLe m o~c = >s....s.1

.n -Q January 18, 1978 l'.b.L?r

..s N

d 'f Director, Nuclear Rcactor Regulation 77

,V Attention: Karl R. Coller

,w Assistant Director of Operating Reactors

. kygY D

IS/

Division of Operating Reactors p %.,g % g --

19

%f U. S. Nuclear Regulatory Cornission Washington, D. C.

20555 5' Nk

,Q

~.

?

Q G

Subject:

Standby Diesel Generator Study

Reference:

Letter, Karl R. Coller to All Power Reactor Licensees, dated December 15, 1977.

Dear Mr. Goller:

This letter is in response to the referenced letter which transmitted a questionnaire pertaining a reliability study of Standby Diesel Generator Units.

It was requested that the questionnaire ba completed and one copy returned to your office by January 20, 1978. We have completed the question-naire and are submitting one copy, for your review and use, as an enclosure to this letter.

Additionally, it was requested that we identify the individual responsible for completing the questionnaire, follow-up communications, or for arranging a reactor site visit. This individual is:

Mr. L. C. Lessor Station Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska 68321 Phone (402) 825-3811 i

i f0t d 8107300287 810720 0260o 3 I

PDR ADOCK 05003298 F

PDR i

,t '

w '

/.

/

Are any foreign gases such as propane, freon, halon, carbon S.

dioxide, etc. stored in the:

Diesel Engine room?

pr_.

Yes x

No or adjacent buildings? Yes No X s

,f.i d

}t If yes, (other than hand portable fire extinguishers), then Pp identify gases and give approximate tank size.

y Gases Carbon Dioxide Volume 76 75 lb. bottles ti sw Does control system automatically bypass, in emergency T.

starting, 2ny engine temporarily out of service for maintenance? Yes No X

If yes, then hod many failures to bypass have occured?

Does the control system automatically override the test U.

mode under emergency conditions? Yes x

No Have repetitive mechanical failures occurred in any component part V.

or subsystem of the engine, generator, or switch gear, etc.?

Yes X No If yes, then which part or subsystem? copoer tubing How many failures?

Three Give nature of failure.

Tubing develooed leaks, was reolaced with stainless steel and no leaks have occurred since.

Would periodic (yearly or other) evaluation and/or testing f33 U.

by "outside experts" contribute significantly to the diesel-

<I generator reliability? Yes No x sj p((

Give brief reasons for the answer.

]d, 94

+

b

y

/

/

/

21-

/

Give the accumulated time-load operating record for each X.

1.

diesel-generator unit from installation to the present 11 (Running Hours):

Y)

Preoperational test Date 1-11-74 01 Engine Sury. Testing &

Emergency Total 7

Seria! Ho Maintenanca Hrs. :

and Other Hours

!1 No Load Loaded Service Hrs. :

IL~ -

7103 UN 336 0

336 UN

{

320 j

0 l

320 l

l. 7102 35 Surveillance test load (percent of continuous rating) 2.

Give the projected or planned time-load operation for 3.

each diesel-generator unit during the next 12 months.

Surveillance &

Emergency Total

llaintenance Hrs. :

and other Hours

Service Hrs. :

40 0

40 Provide the follceing sunmary of the periodic surveillance testing 4.

experience:

Starting date of surveillance testing (0L date) Jan.

1974 a.

b.

Periodic test interval monthly I

l j

Total number of surveilTance tests performed

(

210 c.

d.

Total number of test failures 7

1i:

l*

3 failure to accept load _

o failure to start _

4 failures due to operator error o

ft'g failure to carry load 3

E' failure due to equipment not being operative during emergency N'

conditions 0

L..

Supply a copy of the surveillance test procedures with this e.

completed questionnaire.

See attached.

O

7

.. g t

2 Additional Comments We have listed UN on several frome-tco k n 1 4 n m, 4"~~~

t4 the requested information does not warrant additinnni

[,l,

2.

effort to obtain the information.

If there is dis-(,

agreement on this matter, we will revaluate if contacted.

[

!I EL.. _

Y.

General Suggestions Briefly give conetructive criticism or suggestions as to improvement in reliability of the diesel generators. These remarks may cover tests, naintenance, orattices, orders, policy, adjustmenti, etc.

yc -

i j

I a

L.

t.

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