ML19210A106
| ML19210A106 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/14/1978 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| GQL-0381, GQL-381, NUDOCS 7910240825 | |
| Download: ML19210A106 (6) | |
Text
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21 m REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
DISTRIEUTION FOR INCOMING NATERIAL 50-289 FEC: REID R W ORG: HEREEIN J G DOCDATE: 07'id/75 NRC METROPOL EDISON DATE RCVD: 07/10/7::
DOC TYPE: LETTER NOTARI ZED: NO COPIES RECEI'JED SUEJECT:
'LTR 1 ENCL 1 COMMENTS ON THE COMPLETED STANDBY DIESEL GENEPATOR QUESTIONNAIRE STATING THAT CUE:TICNS ANSWERED UNKNOWN STILL HAVE NO ANSWERS AND THEY DO NOT INTEND TO RESPOND FURTHER TO QUESTIONNAIRE.
FLANT NAME: THPEE MILE ISLAND - UNIT 1 REVIEWER INITIAL:
XRS DISTRIEUTOR INITIAL.
44 4 4 4 444 4 4-t 44 4 4-&4 DISTRIEUTION OF THIS MATERIAL I:L AS FOLLOWS 4 + 4 4 4 4 * + 4 4 4 4 4 4 4 + * -*
RELIABILITY OF STANDBY DIESEL GENERATOR UNITE.
(DISTRIDUTION CODE A014)
FOR ACTION:
BR CHIEF ORE 44 EC*45W/3 ENCL INTERNAL:
(n 3 FILE *+;
L NRC POR**W/ ENCL wr_ < -< w.: ENCL OELD**W/ ENCL H AN AUER 45+-W/ ENCL POWER SYS BRis*W/ ENCL F CLEMEP' SON *-tW/ ENCL DIS SER ER-MC**W/ ENCL EXTERNAL:
LPDR'S HARRISEURG, P A*<-W/ ENCL TERA *-+W/ ENCL NSIC**W/ ENCL ACRS CAT B*4W/10 ENCL
-(
1489 141 DISTRIEUTIOR LTR 25 ENCL 25 CONTROL NBR:
782d'20-?O:?
SIZE: 1P>4P
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POST OFFICE 80X 542 READING, PENNSYLVANI A 19603 TELEPHONE 215 - 929-0601 July lb, 1978 GQL 0381 Director of Nuclear Reactor Regulation Attn:
R. '4.
Reid, Chief Operating Reactors Branch No. h U. S. Nuclear Regulatory Cc=nission
'4as hington, D. C. 20555
Dear Sir:
Three Mile Island Nuclear Station Unit 1 Operating License No. DPR-1 Docket No. 50-289 Enclosed with Met-Ed letter of January 20, 1978 (CQL 0078),was cur cc=pleted Standby Diesel Generator Questionnaire. At that time, we vere unsble to answer all of the questions. Answers have since been determined for sc=e of the questions originally answered "unkncvn".
Met-Ed has been unable to determine ansvers for the re=aining questions and therefore does not intend to respond further to the questionnaire.
Sincerely,
%/
/
, /,J. G. Herbein Vice President-Generation JGH:DGM:cjg Enclosure 1489 142 t h,
,m.m.,
Enclosure July 14, 1978 GO.L 0381 ~
2.
If air cranking, then:
- i I j, S
Give size of starting air tank: Length 103" _ Diameter 30" g
e.
}1ormal standby air tank pressure _ 250 psi.
s Is pressure reducer used? Yes Ho X
L --
Reducer pipe size?
N/A inches.
Starting air control admissien valve pipe size in air piping system, 14 inches.
11tnimum air tank pressure for engine cranking 75 psi.
Humber of five-second cranking periods between above 6
pressures with no tank recharging Est.
ilumber of air tanks per engine 2
Can starting air tanks serve more than one engine?
Yes No X
Is air pipe to engine frcn top of air tank? Yes X
Ho Does starting air tank have water condensate drain?
Yes X
No Does starting air pipe have water condensate trap and drain near engine? Yes No X
!s starting air piping horizontal? Yes No Both X
Does it slant toward drain? Yes Ho X If water condensate drains are provided, then is draining:
Autcratic through float valve? Yes No X
a.
b.
Manual by hand valve? Yes X No If nanual, then is draining water condensate done:
c.
(_
148')
143
Diameter of starting air pipe frca:
a.
Air tank to starting valve 25 inches b.
At air starting valve Ib inches c.
At engine Ib inches What is the primary source of power for the starting air
._u system?
Elec. Air Concressor Is there a duplicate and redundant rotor and air compressor set? Yes flo X What is the time required to recharge one air tank? -
Est.
30 minutes
~
Does starting air supply system have independent secondary power supply for compressor? Yes X Ho If yes, then by:
a.
Gasoline engine?
- fo b.
tiotor driven?
- To Other? (SpecifyT 3:IAIT Diesel Engine c.
This Section3.
If electric (Battery powered) cranking, then:
is :i/A a.
Battery charging: Continuous trickle charger Intermittent charging If so, how is charging requirement determined?
-Tine cycle Test Other r-b.
Battery used: Common plant Individual Unit i
Other Starting cable size
- Length
- Battery to engine (longest) 1489 144
q
_g.
6.
Mater temperature Sensor Position:
t.:
l a.
In piping frca engine Yes 3
b.
In erigine piping No p'.{
c.
In engine direct no 3
7.
Water surge or supply tank in system.
Yes X fio If yes, then bott:m connected to:
a.
Water pump suction? Yes X
No b.
Top of systen? Yes X
tio c.
Both of above? Yes x
No d.
Is bottom of surge tank above tcp of engine system? Yes X flo e.
Does engine have constant air bleed from top of engine water piping to surge o.r supply tank?
Yes X Ho Approx.
f.
Give size of oleed or vent line, i
inches.
~.
g.
flanual air bleed only? Yes x
i;o F.
Governor - Soeed Cont-ol flanuf ac turer
%n +ma Electric (speed sensing)
No Hydraulic Yes Type or code ( such as EGO-35, LSG-10, etc. )
vo8 Aut0matic load sharing? Yes X Ho 1.
Is compensation or stability control and/or speed of response manually adjustable? Yes X
No If yes, ad,iusted by:
a.
Eye and ear? No b.
Test and specification? Yes I~
c.
Other? (Speci fy)
No i
2.
Engine - generator normal shutdewn or stopping nteas j
and nethod.
Electrically Trip cut Fuel Racks and Manually 1489 145
. z Give usual time intervals as follows:
)
2.
a.
Time from start-to-crank to first firing of any Cylinder.
Less than h Seconds.
b.
Time frca start-to-crank to approximate full firing
_ -5 seconds h
of all cylinders.
3.
Give maximun speed surge when starting; use both tachemeter and frequency reter if possible.
a.
Usual conditions 910 Est. rpn 60.1 Est.Hz b.
flaximum observed 020 Est.rpn
~
60.2 Est.Hz 4.
During a surveillance test, give-time froa start-to-crank to when steady synchronous speed is attained and maintained.
a.
Usual
<10 seconds b.
Maximun (10 seconds c.
As specifiec i-10 seconds.
5.
Give briefly the rest troublesome problems in starting.
Lube Oil 'tess Switches a.
Most troublesome NCES b.
f.' ext to most troublesome P.
Air Cleaner or Air Filter - Combustion Air 1.
Combustion air source:
taken frca engine roca or inside l
the building, or frcm outdoors?
a.
Indoors Yes b.
Ou tdoors no 1\\
if-1489 146