ML20040A947
| ML20040A947 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 01/12/1982 |
| From: | Beckham J GEORGIA POWER CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-10026, TAC-11262, TAC-12831, TAC-12832, TAC-47044, NUDOCS 8201220339 | |
| Download: ML20040A947 (8) | |
Text
_.. _ _
on m % cur m m Fa m o v
/d'.y
- t Gw q a $106 T,+ p c f 40; Mr;.70pg f 4 ctg Mye 3
mtow ow n APaq t Gmen 37E?
January 12, 1982 Georgia Power
.\\ Wd[s-J, T. Beckham, Jr, i
v, - ns. 4 u nom.v u,,w.,
s\\
d j
hw r rG,+
con 1
IiGiw
\\
9 j
U. S. 14Jclear Regulatory Commission 4
gr p g,,y;l y Operating Reactors Branch #4
, m.L Division of Licensing 9
cum Washington, D. C.
20555 L.
,/
NRC DOCKETS 50-321, G
OPERATING LICENSES DPR-57, WF-5 EDWIN I. HATCH NUCLEAR PLANT UNITS 1, 2 ADEQUACY OF STATION ELECTRIC DISTRIBUTION SYSTEM VOLTAGES l
RESPONSE TO REQUEST F0tl ADDITIONAL INFORMATION Gentlemen:
Following is Georgia Power Company's (GPC) response to your Request for Additional Information letter of December 7,1981:
i Request 1:
Submit test results or manufacturer certification to confirm that the contactors are capable of continuous operation at 98.2 volts.
GPC Response: GPC through Bechtel Power Corporation made an inquiry to j
Siemens-Allis concerning these MCC contactors.
In a reply. to
- Bechtel, Siemens-Allis included copies of two sheets containing related information.
These sheets are included as Appendix 1.
Sheet 1 is a copy of page 2 of the Siemens-Allis i
MCC Instruction Manual which gives operating voltage range.
1 Sheet 2 shows the tabulation of maximum control cable loop i
lengths for the contactors in question. -Highlighted on this i
sheet are: (1) the minimum coil pick-up voltage, and (2) the allowable control circuit drop.
Sheet 3 is a telecopy of a i
response received from Siemens-Allis to the same inquiry made through Southern Company Serv'.es, Inc.
It confirms that there is no degradation due to continuous operation between
<~
85% and 110% of nominal voltage.
Thus, GPC has concluded that i
even under minimum voltage and maximum load the contactors would be within their product design operating limits.
Request 2:
Provide time delay verification for CV-7 relays.
GPC Response: Although the Plant Hatch CV-7 test procedure has' not required time delay verification, the Test Shop practice has been to 06 apply two or three different voltages to the relay with lower
.s -
values than the tap setting and to verify that the relay 0201220339 820112 PDR ADOCK 05000321 P
pOR q'
---,e,r
..e-t
,.,-----=~.---,.a
<,. +,
m,,-r
i Georgia Power d U. S. Nuclear Regulatory Commission Operating Reactors Branch #4 i
Division of Licensing January 12, 1982 Page Two l
I operates within the time required by the characteristic curves supplied by the manufacturer in the CV relay instruction manual.
The Test Shop personnel have been made aware of the need to include this data in the test procedure.
They are revising the test procedure to include the recording of the "As Found" and "As Left" data when calibrating both the operating voltage and time delay of the relays.
Request 3:
Provide a graph showing the worst case voltage transient, and the combined characteristics of the degraded voltage and loss-of-voltage relays.
GPC Response: The graph is enclosed as Attachment 2.
l Request 4:
GPC should verify that the Unit 1 and Unit 2 designs are identical, and that Unit 2 also meets the IEEE Std. 279 t
requirements.
GPC Response: GPC has had all Unit 2 emergency bus undervoltage relaying reviewed.
The circuits have been verified to be identical in principle of operation to those of Unit 1 and that the design does meet IEEE Std. 279-1971 design criteria.
If you should need further information, please contact this office.
J. T. Beckham, Jr. states that he is Vice Presidant of Georgia Power Company and is authorized to execute this oath on behalf of Georgia Power Company, and that to the best of his knowledge and belief the facts set forth in this letter are true.
l GEORGIA POWER COMPANY By:
J. T. Beckham, Jr.'
Sworntoandsubscribedbeforemethis12thdayofJanuary,1982.
f/
l T
?l%$;$$n E e
Notary' Public DLT/mb Attachment xc:
M. Manry R. F. Rogers, III
b t
I f
6 4
1 1
1
?
f 1
i I
1 4
APPENDIX 1 4
i I
I l
I l
4 1
4 6
L
~ - - ' ' - - -,._...__,.._ __,__,.,,
.-7iw,,
E-N'-wu' Fw *w
L-
' n
-}
(
r, L.T
,s;o. C. :,
- C= ;u.; e I c=: *.y.
t :,
11
,1+; v ";=
.c'
.. :.- A d.e.
I k
4 i
_.. 4 i,1 *
-1 g,o t o.. g.f Lo n
mu,.
r l
(.
p
- J.: 2 k. -,, C 2 {,e s.-b{[
E's 0 :.r - 3,'3,
.., (
1
..' - 4, 77'1 h
.g"t..
9 9
c=o, g'
+6 in n
,i e ra;.
j,i.. q p. i--,
(-
e a.3 t.
6.
J h:
!{'7-. d,u.m4 fl{.
EG..i e.'r2
.t _
{y (e
7
&{I tl,, DJ 4
c; ti!
ta
(
tl1 e
C I, 8
,If ?
2"d i
r N J 2 ? f t, 2i. !!! !'l.,?
ell J2f. 5 8 l r f 112 ]
i
['
ht.!
-J
- r.,- e,. c r I:_
>r o..
ex -
C' S
1 I"
(T -
115.l.
i.E 2 t';1d 2 J T [,
3-fi C,
1 I
Iiri?a:!2,!;t
! s [W.Hi !!! iii.: ? !
2b[
4 li i
t
'D2ti2ij}iT; I'1 i
i.3 ' ! [.: I:.
i i i, l e t :+.3 -
et l
Ti' I
e 2.1, r
T
[d i
C i-i; t's.
{tF : r, r e ; ~ x.
- 32
,1 2, r *..-. ! -
- u. s-
= r,-
J = n-2 D
e4 I-
- t.tu e r
- r t,! r!
e<.
l a_:.1,3 u c i !-
4-i
-s q
l5 Ns-J 7
t-:--d
'E
!It! J
- Ini5Ifik}I3
!!Iil!ii. Il$ diiIN lll
!dE bI z
GliEN*- P'i' E1 2,2;
-j l'h'j l
i I
! '-T i t ' -l f.
- ri trt !r,irT p";
tt:EP=4 e it:
fi [
iiD t Ci 2 !tl p -
- 'L
h !!.1,I II, T H2 s'.?, i. ? i! c 4 ; t.. f p,i.i 5
tr
- a. -
2 E j i-s!?',
jrir I.
gr-
- d. i. g.i.
r l
1 e t,!
3-
.i. rai.:.2, e-e
. -- t>l2 E 2 -1 s
i i..:
=
t e. ; <t i -
22-
- 2 Ej
('.
iz:
v t E s t-:
- 2.!
- - T TT*
G=s p c., 2 ag <r[ti k.k hI Ibi!Ik!Ik
!.$Nk II b $NN NI$ bi o
. s 4Ci e
s.
U 9 C a
o.
s C h
k A
R Hc i
e w
Q
. p I t3 i 1.s gri
., !O 1 g iti!3 [ f 1 [',
tt l.:
)
e 1
<<t-2-r
.d'
=
sg, t
i
_.,li t '[
sj8
("
t) O J !
- I 1Av3 l 'i
-3;sg>l 8
il t
E 5 - di
- !2
- jtl
- f h
4h b;j si.
h II I
- 3..j k'O n
,, < i !.f f, elge((
-[ 3..:
- r'a.r,-
Ei' bit i..
-s e r.
srr ili
- c..
=o
{,0 [ [-] 2I.I '14-0 8'
'S* tic s 3
-73*t c
d-e ' t M
j l.,t e
o i'il'.
as r,<t.g1 31 g r--
a I!;T *i1lg{1143*[;lt I.11,[ ',b s lJ' dti I 54 J ' M J i *., '$l i d'5 O
1.s : e t'7 r
3
=Ei 1-
'. (. y G
!E
~
E<3l,9" I]
- . t ' t 3
0 s i st
- 1 s t $ l '4. d f 2 y 3,.,
i 1
.u
.- :. r i
. m'I h.k c,.
y.
a
$. } c.,b e 'g i } I L Ehl il 1
i 7
.IY
. o.. t- : %; tbo,125) []s
[t
( o %.,. }.
_3-r c.i
- t-o
.A l
feh*12 21 g-(s,
% ' 2 *. ' *i Lg E E!)3 r_.2 3 frin s2 o ps h;I C
-s 5
- t!
t
'a g o
V "6
3[' '[ h ; g '!! [ h g e
l.
.fl u
ta a e-e d 1
o.
1[:
R lt-Si hi g
% I
~o.
y '~,.7. ).1
$ C_
N
$. F I t. 2' 2 0, 11 fi.
-,i-QI17{!G.S,.,3, p
- i. 'f e, t s gg.
15 4;
W ',U ii W
c 3
k,
~
u2 di fjt N!
l'i'
$:8$~
. Y.! l (j) w 12-iN,2 I -lhlt IjJ!
"I 3
9 ")
m-p.53 a e
tj2' I
{e i
1 b
]. s'
(
c
., s. - i s.I,
15.3
.h I (t.*.[-.'
i j I
7 1
t 1
t e-t,.
h E.g 1,
1 - !, n.s $ 1 s-i p.'L t r
I I
r NIOj jil f!'h jfi
'I8 $,!
g'w3 h: > P : k.6! J'+ # # l.}
/
m s
5 -
<c s a e
i r
- z. %.
6
- r -3 g tis 1 p T y~
C {irl~5 - g
(
te
- 3).
t
' '7 : '
gtp s
- -2',s s5 >.
- 4
. x.
t.-
8
- .,j. li
-s u s, r r e!.i J
~
t, '. ;
w.=
Q' 1i.N ty! j 2 i
fr dlIIt3 li gg 9
. Ilfs1 I
1-nI31 4
~
v e-
.0 me. _ -
w r
---u S nest I
D W
Tabulation of maximum control cable loop lengths for Valueline and RQ21-Contactors:
5 Vc d l " R Va Cos D Where:
L = Distance from contactor to control station Vc = Voltage rating of coil i
d = Allowable control voltage drip in %
R = Conductor resistance in
/1000 ft.
CosD = Inrush power factor of contactor Assuming: Vc = 120 g
d = 15*
R = 2.57 (14GA),1.62 (12GA),1.018 (10GA)
Solving for L we find:
Contactor Size and Type VA x Cos0 14GA 12GA 10GA Size 1 RQ21 53 7929 Ft.
12,579 Ft. 20,020 Ft.
2 62 6777 10,752 17,112 3
164 2562 4,065 6,469-4 277 1518 2,406 3,833 1 Valueline 185 2271 3,603 5, 73 4 2
325 1293 2,052 3,265 3
1200 3 51 555 886 4
1200
- 3 51' 555 886 5 lieavy Duty 304 1383 2,1 93 3,492 6
992 423 672 1,068 It should be noted that these figures are for general reference only.
Specific circuit details such as Auxiliary Device Burden, Operating Ambient, Voltage Fluctuation, etc. can effect these values in specific instances.
- Allowable minimum coil pick-up voltage is 80% of normal. Assuming a I
normal voltage fluctuation of i 5%, the allowable control circuit drop is 15%.
Sheer 2
e Utility Sales Operation 5 = " '"
- St E M E NS-ALLIS 400 0Hice Park Dnve Suite 114 Dint.in0 ham, AL 35223 (2DS) B79 8621 January 6, 1982 i
PJ. Steve R.
SiEEon Nuclear Plant Support Southern Company Services, Inc.
Post Office Box 2525 i'
Birmingham, Alabamn 35202 SUDJECT:
Plant Hatch Georgin Power Company Allis-Chalmers Motor Control Centers
Dear Fr. Sisson:
Confirming our conversations concerning the notor controls in subject motor control centers, we wish to advice there will be no loss of life for holding coils at voltages of from 85% to 1104.
If you need anything else, please advise.
Yours truly, E. E. Hendrix EEH:pt i
e Sheer jy I
6h a
s
>-mm2 i
l a
'l f
s 1
i t
1 k
i i
I 1
'E
,I I
I i
d
-4 1
4
+
i n
f 4
i'l i
I
~
i 4
s N
t i
i e
4 i
i 1
APPENDIX 2 i
4 l
l l
4 4
'l
's k
1 1
1 s
b 4
l 3
3 t
S
?
1 l
1 4
t i
1 i
4 4
1
..r,,.
i.
J P/a n t & fch..
C-VoNaye Profile Compard m*/A %/ fay e..
Re/ay Curyes fae Minimam 3ys/em
.n/ fay e andMaximum Load' conde%'on
- ..}
Mader Mofor Sfarfiny an EssenNo/iBuses l.
c-v
+
3
. l A L-- L ~. a..:.- l -
_.S....
.-..._.. jf.
I l l_A
=.
l
.= 1
. _. =. '
L_
'.\\
unaervo/ fay e l
i.
30
. Re/ay Set /bint. ll-r r.
L.
.l
... =. -. -
(9).9 % of 4000V).
l k
~~
~ " "
l.oss-of-nHabt Re/
Jef fb l
~
25-y,,fa,f g oo o g )
'~
[.
b l
i l
_l
.Mofo r CV-7 undervo/ faye l
Rafedpeed
.go.
Reloy.. Ya,a-/05K l
!s 7'im e Dto/ - S l
.. =.. -
... +..
!N i
v. '.
(_
i f
!5 CV-7 Loss-of-%/fye l
.^
ReA13 7a~,o - 93 Y.
u
,N 7~im e Dia/
2 I
N l
-...Mo/o r 70 l
I Acce/ era / ion
.E
. l g_
l
.I.___._.
I
_ O Y
o.
Maf e A
l
.I a
..l l/)o///e _
l Pre-Mo/or l
,5far//rg.
l l-l
~1 I
V
.1
.1 i
40 so do 70
.do 50 l00
% of 4000V.
I600 2000 2400 2800 J200 3600 -.4000 vo/fs.
Ll...
ko'Naye f4.-kV EssenNaLBuses).
~ A/ofe: A n Rafin = 35//
. - i =.
n L _ i.-. _..... _._.._ _.. _._..
m..,.................m......,
-