ML17257A499
| ML17257A499 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/18/1978 |
| From: | White L ROCHESTER GAS & ELECTRIC CORP. |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17257A498 | List: |
| References | |
| NUDOCS 8107290022 | |
| Download: ML17257A499 (4) | |
Text
EncIosuve 3
.DOCS ~S i =-.~ G~~-;t.=-C-WC."Oe~c~~;<<Ou
~
p ggh g
~
'L<< ~
1
~ I I/
~tel ~
'O 4 2 'VlfltK.JP, C ~' CSIOfNT
~ >
r,
~ ~
C' january 18, 1978 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission W'askington, D. C.
20SSS Dear Sir; Enclosed herewith is our response to your request oi December 15, 1977 for questionnaire response for your study oi standby diesel generating units.
Our response to the questionnaire contains no information that is considered proprietary.
Very truly yours, L. D. %)hite, jr.
Enc.
~I30 7 4004 0 A',[~
8107290022 8i0720 t
'}
PDR ADQCK 05000244 F
~AS? ~aura t
/
V
'fbi,~
S.
Are any ~fore?
n cases such as grogane,
-roon, balan, ca dioxide, etc. stored in the:
Oiese'I Lngine room?
Yes No x
or adjacent buildings?
Yes If yes, (other than hand portable fire x inguishers),
-n~
identify gases and give approximate tank siz 3
Gases Volume (ft )
s T.
Does control syst m automatically bypass, in arne. gency
- starting, any engine temporarily out of ser rice -or maintenance?
Yes
!Io X
If yes, then how many failures to bypass have occured?
U.
Does the control system automatically override the : s-mode under emergency conditions?
Yes No X
V.
Have repetitive mechanical failures occurred in any component part or subsystem of the engine, gener ator, or swi tch gear, etc.'?
Yes No X
If yes, then which part or subsystem?
How many failur es?
Give nature of failure.
W.
Would periodic {yearly or other) evaluation and/or testing by "outside experts" contribute signi'ficantly to the diesel-generator."eliability?
Yas No Give brief reasons ror the answer.
Aaecuate:est'rc oi DIG I-oe owed ov ol ne oersonnel v!
mont.'.lv veer! r
=?.-
velllance anc maintenance
-;es:s/checks.
r ur'.nc year< ~
xe'n erance check -'.e ciese'en iec.a "e.'- r oresen-a-ve Is on si e.
X.
1.
Give the accumulated time-load operating record for each diesel-generator unit from installation to the presen (Running Hours):
Preoperational test. Date-7/69 Engine
- Serial Ho.:
Surv. Testing 8,
Emergency Total Maintenance Hrs.
and Other Hours No Load
- Loaded Service Hrs.
9689 30 100 390 S20 9688 30 100 508 638 Z.
Surveillance test load (percent of continuous ratina) 3.
Give the projected or planned time-load operation for each diesel-generator unit during the next 12 months.
- Surveillance h
- mergency Total
- Maintenanc Hrs.
and other Hours Service Hrs.
20 20 4.
Provide" the following summary of the periodic surveillance testing ex peri ence:
a.
Starting date of survei I lance testing (OL dace)
November 1969 b.
Periodic test int rval months nci.e eLmg outing c.
Total number of surveil ance tests per formed d.
Total number of tes railures 3
failure to start 1
failure o accept load failure to carry lead l
railures due
-o -oeratar error l
failure due
- o equipnent not Oeinq operatable durinq neraency condi tions 0
Suoply a copy of -he shrveil lance test proceoures with this ccmoleted oues ionnaire.
22>>
Additional Comments 1.
D/Gs were used intermittently during early plant operation (1970) =or power generation.
This practice has since been discontinued.
Currently power is generated only during surveillance testing or when plant Tech. Specs.
require one D/G to be in service.
2.
D/Gs must be manually sunchronized to their respective safeguard buses during surveilLance testing.
3.
D/G tie breakers are closed automatically to safeguard buses only after of site power has been lost.
Times noted in O.l.a thru c are from bus de-energization (off site power) to bus voltage restoration by D/Gs.
Y.
General Suooestfons Sriefly give constructive criticism or suggestions as to improvement in reliability oi'he diesel aenerators.
These remarks may cover tests, maintenance, practices,
- orders, policy, adjusttttents, etc.
r l..
Allpersonnel who wQL be associated with operating, maint ining and testing responsibilities be thoroughly and fcrmally famillariz d with the D/G's and their associated support and con+col systems.
2.
Stric. adherence to manufacturers'aintenance recommendations for units, commensurate with running time hours.
3.
Develop a comprehensive series of survei11ance procedures to m1fiLL the following r quirements.
a.
at least yearly verify emerg ncy start mode and oroper automatic safeguard load assumption.
b.
at Least yearly verify all protective alarm and ~~ip circ itry functional.
c.
at least monthly synchronize units to cutside "ower g."id and lead units to at least long term 'VV rating =or su=icient per'cd oi me
- o as sure satisfactory operation.