ML20024B516
| ML20024B516 | |
| Person / Time | |
|---|---|
| Site: | Crane |
| Issue date: | 04/30/1979 |
| From: | Labelle D BABCOCK & WILCOX CO. |
| To: | Roy D BABCOCK & WILCOX CO. |
| References | |
| TASK-06, TASK-07, TASK-6, TASK-7, TASK-GB GPU-0288, GPU-288, NUDOCS 8307090066 | |
| Download: ML20024B516 (4) | |
Text
I
.t i
j I
%7 e.. :
.-t-.,
. s. 2.
y
..-.. o. 3,
..s y.
^ s-lX.3. zQ.;'G Y:&=j.K.~ ^:~..~ '-
J q
,f f4 T.nstruction #166
'H
- THE BABC0CK & WILC0x COMPANY O
POWER GENERATION GROUP C0s'E. A4'V0 MACE 0.*[
J. a. TAYLCR
- To l DeImRIN: CrERATI.C :S -
'-f.. C D. B. ROT. McACn. E?:0INTNUC DEPA**wnT gg33g g Froe ses ses.s -
D. V. LAstil!. R CA T. SA'ITY ANALYSIS (2117)
I Fil' No.
['
Cast.
of Ref.
M.1
- m. i :m Date -
Subj.
7,,
'I.-. ' '
APRIL 30. 1979 9 00 A.
i.~.
'r tory ret 177 s ?M FA Pt.LTs trioc sr To c s toss c r
.RITERD;CE:
D. R. 107 TD E. A. VCMACE. " ANALYSES OF LOMDi TIGTECE Q
9.
W-177 & 205 TA FLA:rIS", APRIL 5,1979.
r u-THIS IfDio IS TO RESPOND TO SECRAL QUISTIONS RAISD ET TCU IN,..
h.
N THE ABCTE RITERENCE. TEE RESPONSES ARE BASID ON ANALTTICAL RESOLTS CSTAIND, - "
l'. -
L FOR THE MOST FART, TRCtt CADDS SDC;I.ATICN STUDIES CT THE :MI-2 ETENT. A LOTW
{
a-ANALYSES RI?CRI VILL BE COMPLEID S/4/79. VRICH VILL DCLUDE ANSVIRS VITE V
- .?-
y,
's *..E'*
[
I.SUFFORTITE TICURES TJ IfANT OF THESE POSTULATO CCNDITIONS.
5; 5-
.../
,,...6
.. -[.,;r.,
.g
=
...j-I'
[
j QUESTIDI 13
- g..
- T. '
IF AUZII.IARY TIDVATER EAD BED DITIATD ll0R*AII.T. V0;LD THE 3
s
- ~
OPERAICR BAYZ BIEN CONTRCNID WITH A TILLDC CR TII.LD FFISSORIZER!
- V-
=
EESPONSE:
[-h
~*
TES, THE FRESSORIIZ1 WOUID,STILL EAVE FIILED DCE TO HPI ACT"4 ICE a
'ON IDI RC STSTIM FRESS;11. 80'VE7IR, TEE TDE TO FILL VITS ACIILIARY
'+
FEIDWATIX INITIATED NCD!ALI.T 90CI.D HAVE BEDI ABOUT 4 MDUTES LCNGZ1 TRA5 A21M,I-2.,
, -:. ^ : r.
s.:.,
a P
QUESTION 2 ASS:; MING TE ACIILIART TEDWATER VAS DELAYD AS AT TMI-2. IT THE
{
ELECTROMATIC RD.IIF TALTE HAD RESEAID. WOULD THE CORE REMAIN
?^
CCVERD AT ALL TDEST n
nE$rouSI:'
- ~ ~ -
TES. WITMCUT THE STOCE-OF 28 PCR7 TEE SYSTIM bu d.D HAVE RIT'.*ENID TO
- (,P o n
A EI 3 FCSSURE SITUAUON CNTIL SUCH TDE AS THE ACIILIART TED-
,g F ~~ W VATER VAS INITIATD. VITH AUXILIARY TEDWATER AT 8 MINUTES AND i
. flesShapiro CSR Q2[g[ l Ch i
00 le Recortintt Inc.
d
..; n ~.
_., - - -- cr g-.
...,.,g..
. -:.... s,
- ... _ ~
a = qw - -~~ g g
y.
!N3NENoNNN9 P
HOL l
- .-.ag'he.-
- ~ i.
- o--. dy
.'- M...-T.- M _ _,. n.,_..
' ~ ~. _..
-. 4
,7'g.-,
f...
K.
..~w g-O..:::
u.
.g n
_.m.
~MIMO TO D. H. ROY I j:
,q
[;..q TMI-2 INCInc.T
~
RESPONSE.V QUESTIONS CN LOTW s.
TOR 177 6 20$ A FIsUTS
[ CUI AFRII. 30,1979 9:00 A.M.
M FACE TWO GM 1,
m-P s
w FRCFE1 RESEAIDC CT TEE FOR7, THE STSTIM WOULD HAVE SETILID CUT
?
D A BOT SICTD0'.'N CONDITION. EFI WOULD NOT HA7E BED INITIAID D THIS SCDARIO. SOME SMAt.L LOSS OF RC DVENIORY WOULD OCCUR
,,h b
TEROUCH TEE FORY AND TVD-FEASE TORMATION MAY BAVE OCCURRED FRIOR f-U TO Al"J AGIION.
.3:C.
QUESTION 3:
l,r.',,
WITE THE AL'IILIARY TEI:T=*ATER DELATD AND ELEa:TRCMATIC RII.IET VALVE D.
W.
STUCE AS U TMI-2, WOULD TEE CORE EAVE RIMAD Q COVERED IT THE EFI
- 4..
f
.a.'.',.,
p; EAD BEIN LETT IN THE INJECTIO;I MODET i
.. s, EDME:
'a
}
TES, SMAI2. BREAE LOCA STUDIES BAYE VERITID THAT EFI TDW IS SUTTI 5 6
l CIDT TO IIIP TEE CORE CC7 ERD TOR A BREAE SIZE EQUIVAIJ3T TO TEE,"i.,,
h,.
L. :
14.*
,' :.M.
r[-
ELECTR2ATIC RELIIT VALYZ (0.007 f t ).
I 7.g
'. ~... -'
s.-
- ' QUESTION 4:
A) WOUD RAIS!NC THE BOTTOK OF THE PRISSURIIER ABOVE THE ELE 7ATICN CF.
p~
t -r.
THE SURCELINE NCIILE ON THE CANDY CANE,MAIE A MAIERIAL DITTERENCE.
C[
c r..
U THE SEQUENCE.OF E7ENTS AS TEIT OCCL*RRD AT TMI-27 N".
a
~
z;:L",
~-
B) WOULD MAKDC THIS CHANGE IN ELETATION OF THE FRESSURII.E1 FR07DE -.
i's r
o SIGNIFICANT ADDITIONAL MARCIN IN AVOIDING CODC SOLD DC1:NC A LOMTV y,
=
pf E7DT!
95 RESPONSES 7
T 4*
['.!
A) NO, RAISDC THE BOTTOM CF, THE FRISSURIIER WOULD HA.VE MADE NO MA*.ERIA!.
k y
I DITTERDCE UP THROUCH TEI TURNING OTT OF THE REACTOR COOLANT FUMPS.
h'.
B4W EAS DEIERMUD THE LEVEL BDICATION WAS CORRECT (VITHIN t 2 ft.) '
P AND THE TILLDC RATE CAN BE ACCOUNTED TOR BY SYSTEM S'* ELL AND EFI F.
F.
ACTION.. _THE LOOF SEAL ETTICT.OT CUR FRESSURIIER DESIGN DOES NOT CCME P.-
p DTD FLAT UNTIL STEAM.WAS FRESENT IN THI (RIv..ARY E,CT LEC AND THE F.-
6 ELECTRCMA!!C RELIET VALVE VAS CLOSD. ' ADc! IONAL DTCRMATION VIIL BE
[
E t
l FROVfD Q IN RESPONSE TO' INSTRUCTION No.'472.
r.
[.
.. = -
m-s_. m m y.... v...s,g_.,yy,..m...
.w...g... 3... m _.
.2.-..f...
.,.f.,.:. i..,.M, w g.-.
J
-W.
-.3 n.n
-.,. !ev
- - - - -M47P"f **"%
sd;J.,,c g,-
j.' [ D
~)
3.f. _.. - ;$*.S:^ * *,
'T--?-- %--by.Y.k ] ;.;. ?' "'..&.:-Q Q.":. 24~ :
aug pe. amer. m.;.,,.
2_f L.,
MD0 TO D. H. ROT
% l-IMI-2 INCIDENT I
i RESTONSE TO QUESTIONS ON LON b
TOR 177 & 205 FA PLANTS j g; APRIL 30, 1979 9:00 A.M.
t1 9 FACE THREE a
n
- 3) 100, THE MARCIN TO CODC SULD D TZE FRESSUR.IZER IS STRICTLY y
.J A WNCTION OF THE EEAIUF RATE IN THE PRIP*AT SI9E A C ANT WATER
{
ADDITION SUCH AS HFI TLOW. AN ELE 7ATC PRESSL*RIZER IMC13 t
POSSIBLT HAVE DITTERT.NT FIFE TRICTION CHARACTERISTICS, BUT THEI1
[.,p.
ATTECT WOULD BE HIN2fAL.
QL~
,m'
' @N QUESTICN 5:
WHAT CAN BE DONE TO PRQ7DE SUBSTANTIAL MARCD BETWEEN PEAE STSTm
%2 'J'
~.. _
FRESSURE ATTER REACTOR TRIP AND TEE SETPCINT TOR CPENDiG OF THE
$,!J v.
.,ELECTROMATIC RILIET VAL 7E!
[ p* 2 '..
'..,n..
g.,
s.
gzspaggg:
g..
' ' ' ~
3;.
Ui THIS CONCERN BAS RED ANSWERD SUBSEQCDT TO ISSUANCE OF YOCR p.,
- 6 REFERDCE MEMO. MARCIN BETWEEN PEAE STSTM FR. ESSURE AND ELECTRO-M.. -
- r. -
McIC RELIIT VALVE SETFCINT RAS BEEN' FRO 7DD TOR ANTICIPAIID
[,
t
' sc
. v...
TRANSIDrTS ST RECOPCTINDING A 1.C'.'ER TRIP SETFCINT (2300 PSIC) AND
.. f..
i sw.-
.RAISUC THE EIICTROMAIIC RILI!2P VAL 72 SETPODT TO 2450 PSIC.
',7
- IN}
=
~
g-V.
P ".
QUESTTON 6:'
TOR A TSA& AN'ALYSIS 0? LCHN, TO WHAT YALUEr COULD TEE ELECIR0= g,'.E],[
).'~.
. -ec.
S.
MATIC RELIET TALTI SETFOINT.DRITT SUCE THAT A REACTOR TRIF UCCLD r
k' i' *
- 6. -?
[a' FAIL TO BE ACHIE70 IT THE TALVI STUCE QFDT L!..
BESPONSEs
%'.U.
TE RECC!c'OrDATION MENTIOND D THE A50VE QUESTION (#5) FRICLUDES C
'.~.
i
.. 'Vf; r.c. s
.?
- 73. ~.
. w.y I THIS TRCN OCCUREDC... ' "... f
. i. :;
l
- -.. _.,.i. w.
. 2.,,
e m.-
- y-C c
qCESTION 7:
.f; IT RETIEVING TEE IdI-2 E7ENT SEQUENCE, WEAT OTEIR CHANCES WOULD. -
p.
Too SUCCEST IN SATETr SYSTm3 AND SETFOINTS u QR:ER TO DSURE E'
s-'2 SUBSTANTIALLT CREATER MARCIN TO PRECLUDE OCCUTADCE CT THIS EVENTT
RESPONSE
b THE IMMEDIATE, SHORT TERM ACTION TAKIN TO DATE. I.E., RESETTINC 3,
TRIF AND ELECTROMATIC SETFCINIS, CPERATOR USTRCCTIONS TOR HFI -
E-l I
AND ELECTRO? TIC MANUAL ACTIONS ARE SUTTICIENT.
E7.'EVER, LONCER
[.
F l
2
^
- ~ ~ (..p-: 7p n. -
- y 7,., 7,,. g,q..,g ggy -
.f'm"'" r.y
. ~..
m,-.-.y.,-
i
. m.
..w
- .- :U.*'fL~.
3 4
Y
[ - - --.--.
l e
t
u.
- x.. v
,gs S
.m._
.. w
~*'~~ -- a -- - tW c n. - > -e-.~
.]
- v...,.,,
- g. _.., ; m_.,, ; - _ ;...e.. r- =v
~..u,u.y-
.: n.... w;<<:;.;.. ~_ -. -,,. - -
,c
,,,g:.,,...
__m.
,._..,--_.m.-A--
..w-s.,,._
j..;.........-
w
- h...,', F, 4
- D'.0 To D. H. ROT r
%I-2INcIDEsT JL
'7""
RESPONSE TO QUESTIONS 0:t IDFW TCE 177 & 205 FA FIMTS.
[.( g APRII. Jo 1979 9:00 A.21.
pp e
~
FACE FOUR
- f fi
,.:
- a.=
-p s
.a.
- 4. :
n:
TIR!! FROJECTS FOR CPERATINO PLA'*T SATITT EVALUAIION ARE T
r
.l NECESSART A:!D ARI IN PREPARATION BY THE SAFETT ANALYSIS UNIT.
[, '
+.
L.*
INCLUDED IN TEIS EITCRT ARE SKDIES OF ANTICIPATCRT REACICE s-F*
.F L.,2 TRIPS AND AFV INITIATICS TDiE RIQUIRDIENTS.
%.. 3 '
a,$
~
- f...
g.; T.
. *L/kn M, s.
IR=
a..-
g n e. '.
m
.,,y..P.
g.. -
% - g.
.1 r_.
s s
, t.. j,. ]..W.
(V./., :s..
=.
N s.
FG
.,,./.
g,,
- - 5
's g
.y,
}.
- y..
m
.s.-
,,y
-r
]:a.,r p
.a. -
. ~..q.;.,y....:~a s
r..
~
a q.
~ - 7..
..t u
.f
.g.a.;-
~
'l..*._.'.%.;,!
e <*f
' ~-
~,
L, '
~
-.;.....m. -.
., w a,.
. ; '. O,.in.T.~ **%g. ' ;,..,}. <. -.,
.y l.*.y
,....g..- f'.y ; l.ggg,....,, -.-
- 1... -
. 'J.,.
- J. : '. :
-:rhi.,.,,
.v.
Q> ~..
- - y -l.
- e ;y q
?.
....,~.,-s..
.. v.,. c,.ag,%.....-;.
o i
.s -
. ;.u.
gf.
...t
. r...
n..
- .se ;. -... ". - '... q,.e t '
- - * <
I&:
m.
e.
.L.
r t
~:
s-
-: x. '
- t. n.t a.
~
?!.
...... %; -. - :.,=, p '. a.-.
-. ~.
. '..,,, L. W.
.4:- ]c, c.,. !.
y.
.r g.
. ~..
a..
,d. -
-,. : y. *:. ~.. -,,, Y., g.*g ; ys f,.
.s.
L.
e j
.~
r G..
r s
r,.- 1 7.
a,- ;.
t
.k..
,s.~
y
..s
.,5.-
N.
.c,
." - r.
. *....~
v..
j
-e - -,
. s
,.:;.c,q: p'i.-^-#.
, p'
'...:,.,... e.,.*
. e '. "; '.
.. s [.-
y-
. v. h "* -J :. '.. ;, -........,-r--
2
- s.
y
~.
s
-y
..c..
.e.,.,;..
.. ~..
g
- .. ~
... 1,..-
+
.,.. l r. y..n...
s.,
s
- k. 3 -
-s-.
.w
.r
-~
_.. ~ -.
-t
,s.
?
,e.
.-r..
~:
o*
,,_._,o
. 'ey.,a'. *
- t..
a ;-
i
- h. ;.
l r
y:
9 g
g i..m.
8 V
- p 1-
.a L
e.
=
L.
h.,
h
.1
- q. [h.', '..* /N e E" D'f- -
'h.*7
,- ~
8
".3.h.-.-
. # '.[ [
'e
'*S y
t..
..,h A *. )'J * - l4'[7
. ",g"
.a
..,. :* ey -k% 4 e _q uy.,
h r
,2. -.
.I p
l
- --