ML19221A081
| ML19221A081 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/18/1979 |
| From: | Arnold R, Keaten R GENERAL PUBLIC UTILITIES CORP. |
| To: | Herbein J, Geoffrey Miller METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7905190089 | |
| Download: ML19221A081 (6) | |
Text
-((
Dnter-OHice Memoranclum
^
^,
Dre.
April 18, 1979
{ZAb 6.,9TW5CG Sutiect Sequence of Events Following
~~
Loss of RC Pu=o 2A To J. HERBEIN Location TMI Trailer City, #11 G. MILLER The previously approved sequence of events (as defined in EP-32) to be followed if RC Pu=p 2A fails is as follows:
1)
At t e=p t to start RC Pu=p 1A/'
2)
If that fails, atte=pt to start RC Pu=p 1B or 2B (see below) 3)
If that fails, atte=pt to cool with natural circulation 4)
If that fails, start the HPI pumps On April 17, RC Pu=p 13 was tagged out.
In effect, this modified the above sequence by deleting frc= Step 2 the attempt to start RC Pu=p 13.
This was based on an experience at SMUD where large vibrations were reported when a pump stopped and the dia=etrically opposite pump was started.
Additional information has now been received which indicates that the reported vibrations were particular to the SMUD reactor vessel, and core barrel. There re=ains, however, a possible ele =ent of uncertainty in starting the opposite pu=p.
It has therefore been decided to remove the tag from RC Pu=p 1B, but not to atte=pt to start it unless all other pu=ps have been tried and failed, and natural circulation has been atta=pted and failed.
Effective i==ediately, the sequence to be followed if RC Pu=p 2A is lost is as follows:
'1)
Atte=pt to start RC Pu=p 1A 2)
If that fails, atte=pt to start RC Pump 23 3)
If that fails, atte=pt to establish natural circulation 4)
If that fails, atte=pt to start RC Pu=p 1B 5)
If that fails, start the HPI pumps The supporting actions and precautions for thes<. steps remain as approved in EP-32.
I R. W. KEATEN
[
[
/l APPROVED:
1 s,
R. C. XRSOLD 7905190061 127 132 cc:
R. Wilson J. DeVine S. Holland R. Hendersen Staudt/ File T. Broughton M. Morrell T. Fischer T. Cri= mins E. Wallace D. Schoen P. Walsh J. Daniel GPU Servce Cor: oration is a subsichary of General Pub!c Utihties Na poration i
V..
'/ 7
// /
j te f 4 ~J }0-kn A'" / /~L e.y' te cP O
-lJ' P,,-j v:4.
.c=17 i
Gc Er.t>f.
Su w A=4 A'
d'Y "'" ^ " '
X,,
><,.x, s~ a.uz >
/,
oc,, g w.n.( % win
^Y
- ~. -
ps, N %)~/"' >l'k
{y/A-$'W
h hb b
- (
Jia
$41 o ~ < ^y
- rlc, yT, u, u s. e Pm.3 3.,,
' Mam i 7 /c bed t
0 520 F loco
~
\\
R TO Slo'T
\\
k
\\
6 440 g Soa
~
$(
(2 Znili,/) f.Mol M hom (.g/$A c~At Spaw -3 w u.,9 -,y.ivaa4.,_
'ha is u: f / A f,,,,,.e / a ry -j'. / w L t
& y p <. m 9, s y,s w
%.u-c.s,s.c w + w. ~g w
a!
qp a p,,,p p.,p m - e u
nsaypps.,;
v w by..)u,1y offm ni {t%a.w,s 1;} sp,
' ~
a s - y _. m ~ a 1,i y+~
w uje /c d cAs-gw dilu de d, thf UM "
oob e w3jul.
127 133 C.
09 L.. ~
0
?n c.:.:ur :;... f.., /
Lco4 N ~ l' n
,9,,,,,
/o wcovn ^
Icl be D u~g up H A,rn,.,e n s m c
~
I c,/rc fw:n
(@
A cu,=d., < k u uu e
, /~ 0 m,,
sn i
(.;,y:, /, h:ri fri/33 v2 ige,h N ^l!Yo
$Cff
~ nc /neM MJi*~~$**-l*^*
U
.y o,n n
+6 p /~ ^ ^ '
s,>
,,'b nimucu n, <.i,r s (fev4eP,cuh~'L)
- 4 c,t.
^c k $$bm/ hf r Lc$p d &cssne vnu i cr !Is~ ',c A
,.,s.e, e a s P/r b,n;-k
{
0s.c /n bw/ky m.p.
tce4 frac m s /J).
Pr e u + r e 4C$4 lI h^ ' -
!($f 4 */,
Z znii. i aus s~ !
4 h v,b ra., k !w.i..
74 s vsuc
,, c nor, s.a b<inc!)jc+.Ic.~e/ys,,-,,c
?ar.t.suse ogetk U U'
.uou/d kkye.>l/hiy/edl1Nl34
//
fr/a., yj g g
&ma
- Aw -
p-s.n z t iu
'"UdGL $cs~~ G,),.*
Z C /f C J/ lal. /Nh,., s/hx /m:u
, r i.. n i... is
.a 1., t,.....
c
O
==. :.
3, pa a; ci<.i
^-
ama ecp f*r* lim n,,,mi ~ u,._
av>.o+
y y, a c/> mx
_s- -
v
%3 gu V m a% b'o<~
$0tlt 6lC$PF eb 1 n i/c,, n
/@
ece op m~
m 127 135
?: - -
l 2.
3 4
.5 6
7_. _8 _7iloj/t'/2.;/3,fy
/5
\\
l
'i 4
i l9
- 3l X
X X
X X
X X
c oi X
X X
X X
X
'J X X
X X
X sl X
X X
X X
X y
X X
X X
X X
X 4
s!
X X
X X
X X
xl X
X X
X X
X X
X X
X X
X X
u X
X X
X X
n u
l X
X X'
X X
X i
X X
- X X
X o
X X
P
?
127 136
!~
LOCATION OF FUEL ASSEMBLIES CONTAINING BURNABLE P0150H RODS THREE MILE ISIAND NUCLEAR STATION UNIT 2
>?
y g,
FIGURE 4.3-2 sen g
~
O,Wn)
~
V.~.~.'
B R.5 2 Case SurnmmW ^
(0:00 t.::.r) gcp Ig C
I 18 3 128 i
- M. h
/CCO -~ ~ ~ ~ -- GXm o-fic(F-Q:
it g, p l'
DI 3.
g YK5cs.
~ \\~ 2cf
/
(F91)
D
-- 500ps4 uhad38 s
- AkD S -7J p
AS*
SC. TSMP (*F) b DES 95 RT A; lower PRessuce (R->B') tDtH&&
D EG-RSSINar, TriWN KEru2N To R.
3d) Corn aNS Desiw//Nsrna.nrrw or: smricnyo ACT!L/E S W r g m S f p g p g i m p g y " h g g g u p f f,g g 55 u.p g ConrRoc-nuo S3rsaoay Cocam sysrex1 rm l3' SM h fBCuce T5mPE2AT42E lR* 8) By Sysnt:ft/m orJ W S/G i
$ T/+ce '9' S/cr Souc - DRot> l'8tamy Tapia To Mutuqun(D-:c)
~
D Taip 2C FamP 'lY ~ BSTR6us// ji%nd)W. CGMVacr/ou -
SSG?&us// CCarM'm 76 #3" q& rp,9yett.7, sus 1
h.DRO/'. PRIP14RY AP86ScheB '7b Sguscr2D KCu2 (C e tD)
Q~5MG Adl/W72'T SYSTEMt.5bt12-CONr26t. A225
. :AIRXPUP ltJtTil SnW79 ba /Zstu RCtSE Sysren.
- i' A l -
. ;.. ~
- ~..
1 Mo Poiar PRIntn&Y ~ tYpr's Cinc, scuo 1.ioaic, Logcgeoh P/y courze.
Scawser-Scuo toerer, zonerem HaarDe:rystret 127 137 I
a