ML20004E036
| ML20004E036 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 04/30/1981 |
| From: | PLG, INC. (FORMERLY PICKARD, LOWE & GARRICK, INC.) |
| To: | |
| Shared Package | |
| ML20004E035 | List: |
| References | |
| NUDOCS 8106110020 | |
| Download: ML20004E036 (12) | |
Text
.
O ENCLOSURE 3 Selected Viewgraph Slides Viewed During Meeting Presentations April 30,1981
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AUXILIARY FEEDWATER SYSTEM i
-(Simplified)
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H
_ MAIN FW ATM
$ 'i, it-9 MOTOR-DRIVEN
.I M
M AFW PUMP (A)
-M-g
^
SEllVICE WATER 1 H : -
-NH F NW
'N
,; lp.;!
TRAIN A M
T y; ::
S S
CONDENSAT COOLING ^
II
>Q O
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ST AGE POND
- G, y
CONDENSATE
. 5 p
- STORAGE CONDENSER TANK MS ATM P
HOTWELL AND 4~
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DEAERATOR M STORAGE TANKS 3
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TURBINE-DFilVEN h
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,c SERVICE WATER RQ-D<}-
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TRAIN B O
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jg ATM M
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PUMP
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SUCTDODS CODSPEGLSSA?:GX i
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,i AFWAS A 4
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d___..(psL) 2/4 1
i M
M t
l SERVICE 3.,
1 1
(b J
WATER A i
~~
AC AC 1
l l i
AC M
MOTOR-DRIVEN AFW PUMP M
CONDENSATE AC STORAGE N
l 7
TANK AC
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i i-I CONDENSER I
l'OTWELL AND N
AFY!AS B j f
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DEAERATOR STORAGE TANKS
- d-pl PSL ) 2/4 r----
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AC M
I TUR3!NE-DRIVEN j
M M
A?W PUMP SERVICE i
WATER B
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AC AC d
i DC i
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FIGURE 3-1
,3
- g AUX!LIARY FEEDWATER DHSCMARGE COMPDGURATHOM
--IFOGG AAl
[ AFWAS A1
__________L--________
-4 F.OGG ACl
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M k
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A AC*
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--IFOGG BA }{
g
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MOTOR-DRIVEN I
l AC V
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AFW PUMP l__ E i
f
. _ _I l-i FOGG AD]
i.{ U AC
'-LAFWAS Bl Sh N
C)<3 "i E AC*
0;j NOTE: AC* SIGNIFIES A BATTERY-BACKED i--iFOGG AB l t
POWER SUPPLY I
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l -- - E/H - } - - -- - - - ~ ~
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4-[ FOGG BD]
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O'i TURBINE-DRIVEN I__ E j
AFW PUMP
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w'd FOGG BCl
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DC.
a AC i
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FIGURE 3-3 l{AFWAS Al
)
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2
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AUXILIARY 'FEEDWATER h
PL:?SP YUREDME D3DW23 It k 1 H:1
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ATM AFWASN r
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FOGG[
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PUMP A
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A FOGG B.I HYDRAULIC i
DRIVER
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W i
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.g FIGURE 3-2 1
5 i
4 1
AUX! LIAR'( FEEDWATER I
FC@@ LOMO i
FEED a
FEED BOTH OTSG A FEED OTSGs OTSG B
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l,-
a P SETPO!NT o
m -.c.- - -
STEAM A P SETPOINT y
PRESSURE g
o o
A P SETPOINT T
T O
3 g
T O
S T
O G
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G T
T g
S A
B S
A G
G B
B A
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MIOLANDUNITS 1 AND2 G 154 717 l
i 4
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du h
Sd O
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O MAIN STEAM PRESSURE M AIN STEAM O T
DIFFERENTIAL 8
8 TRANSMITTER S
A B
i V
i V
OTSG B PRESSURE j
OTSG B PRESSURE Kf OTSG A PRESSURE y
O MANUAL BLOCK 3 )
t c MANUAL BLOCK i
MANUAL ACTUATION i
MANUAL ACTUATION j
y v
v l
"OR" GATES i
d p'
9f b
j
- 'S'***
TO VALVE LOGIC -
TO VALVE LOGIC c ' 5" 'a t
FEED-ONLY-GOOD GENERATOR LOGIC CHANNEL A
'[
(typical for Channels B, C, and D)
FIGURE 4-7 1
t
4' AUXILIARY FEECWATER TYP[ CAL STEAM GEKERAT@R L649" TOP OF UPPER TUBESHEET tx:
aaam
-620" LEVEL TAPS
- E
~607" AFW INLET NOZZLE NOZZLE
~
WIDE-RANGE s
~'"
~
TRANSMITTER (LT)
LEVEL (s. "
2 yalves i l,
-246" NORMAL LEVEL (ramped) if RCPs OFF NARROV/-RANGE \\
i
-102" LEVEL TAPS
- x--aaam LEVEL TRANSMITTER LT
~
-30" NORMAL LEVEL IF RCPs ON t>4---aamm -6" LEVEL TAPS *
- NOTE: Four narrow range 0" TOP OF LOWER TUBESHEET' i
and four wide-range AT EL 605'-7" transmitters per OTSG. Transmitters share bottom taps.
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c-is c e uou~ouunsi,~og 1
FIGURE 4-1
4
[DE,R. GE AUXILIARY FEEDWATER
"^", ROW RANGE LT g
ty c
LEVEL CONTROL LOGIC (Simplified) b~~"~~AFWAS LOW LIMIT FIGURE 4 2
^
Y V
SETPOINT r
v A
r
/
A O
g f
RESET FOLLOW HOLD RAMP 24" k
[
Y HI LIMIT RCPs 4 I kh
-> T
> 4-240" OFF
~
,y STATUS I
+
j 1C11 I
A T
M d
h 1C114 A
T M
UOt ANntfNif S t ANp ?
G 1547 09 V
TO VALVE
6(tpI_-_____--_____-_-__--------------------------
I
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pt '
46 Mia ft %[,
SUMMARY
OF RESULTS "p*l (t CONDITIONAL UNAVAILABILITIES OF TIIE MIDLAND AFWS v4. y y WG\\*r.
4,y.> V w$Q.. +
Loss of Fuin Loss of ebin Loss of Pbin Feeds #ater 4i%r Feedwater Feedwater Due to Loss and Loss of All AC Power 1.q N g
of offsate Power ch contributors to
- 6
[h(./'
unavailability Double Double Double M] 't NX %.7 Crossover Douole Crossover Double Crossover Double (Plant Crossover (Plant Crossover (Plant Crossover
' '.d5A7.T Specific (NHC Data)
Sp'Da t a) ecific (NHC Data)
Specific (NHC Data)
$@2yi 2
Data)
Data) e3(
'$<jh Handom failures 7.0 E-5 3.5 E-5 6.6 E-4 2.5 E-4 1.7 C-2 6.4 E-3 id (1.1 E-8)
(8.4 E-6)
(5 3 E-4) g*y;j.t L.
Test and maintenance and 1.2 E-4 6.9 E-5 3.4 E-4 2.8 E-4 5.9 E-3 5.9 E-3 gQ random system failures (3.9 E-8)
(6.5 E-7)
(1.9 E-4) jc,1 y,
lluman error (test--failure to 6.3 E-6 3.7 E-6 1.8 E-5 1.5 E-5 3.1 E-4 3.1 E-4
,qfJ close full flow test valve)
(1.1 E-10)
(2.0 E-9)
(5.3 E-7) l
$4k['
Com. ion cause (full flow 8.4 E-6 8.4 E-6 8.4 E-6 8.4 E-6 8.4 E-6 8.4 E-6
- N dl Al
.d5 test valve open after test)
(5.9 E-10)
(5.9 E-10)
(5 9 E-10) f Other f
f f
f f
f
[
System Total
- im -I k Plean 2.0 E-4 1.0 E-3 2.3 E-2 kb,h Variance 4.7 E-8 6.0 E-6 6.7 E-4
,q[Q."
5th 3.4 E-5 4.1 E-5 3.5 E-3 Q
7,e 95th 5.8 E-4 3.8 E-3 6.8 E-2
'. gQ obdian 1.4 E-4 1.2 E-4 4.0 E-4 5 5 E-4 1.6 E-2 1.3 E-2 N
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RELATIVE
!FiU. Eh FREQUENCY
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fe. i.. e FOLLOWING F
9, A i {.{
SYSTEM STATE DEMAND
,wu a
- INN!l 1.
IMMEDIATE FAILURE 4 X 10-5
.-q m
- 4 !i: h"'
i.h:h,b s-2.
INITIAL COOLING, LONG-TERM FAILURE 1 X 10'5 fLt
.,x.;.q, y v.j.thp;l 3.
SUCCESSFUL OPERATION BUT 2 X 10'4
3 fjE OVERCOOLING IN AT LEAST ONE SG p'h}h!O1 l..,:if' 4.
INITIAL OVERCOOLING AND LONG-TERM 2 X 10'9
./j.$.
FAILURE e;.::,
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