ML20237H852
| ML20237H852 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 04/29/1987 |
| From: | Strickland G, Wilkes J TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20237H133 | List:
|
| References | |
| ES-1.2, NUDOCS 8708170385 | |
| Download: ML20237H852 (14) | |
Text
- -. - -
TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT EMERGENCY INSTRUCTION ES-1.2
. TRANSFER'TO RHR CONTAINMENT SUMP s
Revision 3 I
PREPARED BY:
G. StricM and RESPONSIBLE SECTION: Operations S
E Y:
u-Res nsible Section Supsrvisor g
PORC REVIEW DATE:
APR 2 91981 APPROVED BY:
Plant Manager DATE APPROVED:
L i
i l
Reason for revision (include all Instruction Change Form Nos.):
Revised to correct containment sump level setpoint to 11.25 percent since Instrument Maintenance changed bistable setpoint.
l.
The last page of this instruction is number:
12
~
=
8708170385 070011 PDR ADOCK O y7 P
J -1
SEQUOYAH NUCLEAR PLANT PLANT INSTRUCTION REVISION LOG 1
EMERGENCY INSTRUCTION ES-1.2 Date Pages REASON FOR REVISION (INCLUDE COMMIT-Approved lAffected REVISION MENTS AND ALL ICF FORM NUMBERS)
LEVEL 0
10/04/84 ALL
'{
Revised to add transitions from other instructions, to change stoke time of I'
1 08/21/85 1,2,5,7 FCV-72-23 & 20 delete FCV-62-98 & 99.
Revised in accordance with ICF 85-1500, I
Revised to correct containment sump 2
01/28/86 6
PORC reviewed and approved 12/02/85.
level setpoint to 11.25 percent since-Instrument Maintenance changed bistable APR 2 9 1987 3
seepoine,_
3 1
l.
i 1
l :
a l
,w j
l 0273L/1dw
.l l
I_
m
]
i 1
1 f
SQNP l
J E S-1. 2 Unit 1 or 2 Page 1 of 3 Rev. 1 i
TRANSFER TO RHR CONTAINMENT SUMP A.
PURPOSE l
This guideline provides the necessary instructions for transferring ECCS and containment spray suction to the containment sump.
l B.
SYMPTOMS 1.
RWST level below 29%
l l
C.
TRANSITION FROM OTHER INSTRUCTIONS i
1.
E-1, Loss Of Reactor Or Secondary Coolant 2.
3.
Foldout page 1.s
~
t 4.
FR-C.1, Response To Inadequate Core Cooling A
5.
FR-C.2, Response To Saturated Core Cooling 9
O he e
l. _ _ _ _ _ _ _ _ _______
EQNP ES-1. 2 Unit 1 or 2 Page 2 of 3 Rev. 1 1
TRANSFER TO RHR CONTAINMENT SUMP STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1
g.
Heat Exchangers, Pnl M-27B
)
a.
Monitor CCS surge tank level b.
Open FCV-70-156 (60 sec) c.
Open FCV-70-153 (60 sec) d.
Verify CCS flow on FI-70-155 and 158
(
e.
CCS to unaffected unit
, may have to be reduced e
.r 2
Check RHR System Ensure at least one RHR Pump running a.
Ensure RHR Pumps
-RUNNING k
)
SQNP ES-1. 2 Unit 1 or 2 Page 3 of 3
' Revision 3 TRANSFER TO' RHR CONTAINMENT SUMP STEP
' ACTION / EXPECTED RESPONSE RESPONSE NOT OBTA NED 3
Verify Automatic Switchover WHEN RWST $ 29%-
a.
. AND cntmt sump >_11.25%,
THEN:
4
- 1) Cntmt sump valves -
- 1) IF_ a entmt sump OPENING valve can NOT be -
fully ' opened,
a) FCV-63-72 (40 sec)
THEN stop the I'
corresponding RHR b) FCV-63-73 (40 sec)
Pump AND Cntmt i
Spray Pump I
valves - CLOSING f
a). FCV-74-3 ;
(2 min)
.s b) FCV-74-21 (2 min) 4.
Complete Switchover Per Appendix A 5
Verify Switchover Per Appendix B 6
' Return To Instruction In Effect L
L
-END-C EMERPR/H 3{
anc
SQNP ES-1. 2 Unit 1 or 2 Appendix A Page 1 of 5 l
Rev. O.
(-
TRANSFER TO RHR CONTAINMENT SUMP i
STEP
_ ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED C AUTION:
If the RWST reaches 0% level, then immediately stop any pumps taking suction from the RWST.
Complete the switchover steps listed, then restart required pumps C AUTION :
If offsite power is lost after transfer to entmt sump, then immediately place CCPs in PULL TO LOCK.
Manually restart RHR Pumps prior to restarting CCPs.
Manually restart SI Pumps CAUTION:
ECCS flow to RCS must be maintained at all times CAUTION: If the RCS pressure is greater than the discharge i
pressure of the SI Pumps, then the SI Pumps should be stopped p
Note:
Perform all actions quickly in a precise, orderly sequence Note:
Do not interrupt changeover operation until all actions are completed Note:
If a valve fails to respond or to complete its demanded operation, postpone any corrective action until the subsequent steps are performed except as noted Note:
Loss of one complete train of power will allow the other train to be swapped.
Parallel valves rcquired to be closed will require one valve to be closed locally Note :
The times provided at the end of subsequent steps are normal times for the valve to trm el full stroke l
[(
Note:
Each valve handswitch requiring operation is identified by a number representing each sequential step 4
f-.
SQNP
. ES-1.2 Unit 1 or 2 Appendix A Page 2 of 5 6
Rev. 1 L.
TRANSFER TO RHR CONTAINMENT SUMP
-- ~
l STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1
CLOSE SI Pump Miniflow a.
FCV-63-4 (10 sec)
~
~
b.
FCV-63-175 (10 see)
~
FCV-63-3 (10 sec) c.
2 CLOSE RHR Crosstie a.
FCV-74-33 (10 sec)
(
b.
FCV-74-35 (10 sec) f 3
OPEN Parallel Valves In CCP And A
SI' Pump Suction a.
FCV-63-6 (10 sec) b.
FCV-63-7 (10 sec) 4
- OPEN RHR Discharge To CCP FCV-63-8 and 11 interlocked And SI Pump Suction with FCV-63-3, 4, and 175
)
l (FCV-63-3, 4, and 175 must
--i
[
a.
FCV-63-8 (10 sec) be closed) i i
b.
FCV-63-11 (10 sec)
L
'l
~5-i w
u iM S
SQNP ES-1. 2 Unit 1 or 2 l
Appendix A
(
Page 3 of 5 Rev. 2 j
1
)
TRANSFER TO RHR CONTAINMENT SUMP j
STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED
)
. CAUTION: Do not continue until all valves in steps 1 through 4 are verified in their correct position. AFTER the valves are verified in their correct position, i
THEN monitor the ECCS pumps for continuous flow when closing the RWST suction valves.
~
Note:
All ECCS pumps are now aligned with suction flow from the entmt sump 5
Reset SI 6
CLOSE CCP Suction From EE
- a., FCV-62-135 (10 see)
,Y b.
FCV-62-136 (10 sec) 7 g.OSE RHR Suction From RWST
)
a.
Restore power to FCV-63-1, Rx MOV Bd Al-A b.
CLOSE FCV-63-1 (15 see) 8 CLOSE SI Pump Suction From '
RWST a.
FCV-63-5 (10 see)
?
~ '
A
SQNP ES-1. 2 Unit 1 or 2 i
Appendix A Page 4 of 5 Rev. 1 TRANSFER TO RHR CONTAINMENT SUMP STEP dCTION/ EXPECTED RESPONSE, RESPONSE NOT OBTAINED Note:
After going into the recirculation mode, the Cntmt Spray Pumps will continue using water from the RWST.
Upon reaching the '
RWST level of 8%, realign the Cntmt Spray Pump suction to the entmt sump.
If sufficient time exists to verify ECCS alignment per Appendix B prior to the RWST reaching 8%, then go to Appendix B.
9 Align Cntmt Spray Suction To Cntmt Sump a.
RWST level
< 8%
b.
STOP and PULL TO LOCK both Cntat Spray Pumps I(
1 c.
CLOSE cntmt spray suction
.-e k
- from RWST
- 1) FCV-72-22 (15 sec)
- 2) FCV-72-21 (15 see) d.
OPEN cntmt spray suction from entmt sump X
- 1) FCV-72-23 (25 sec)
- 1) Interlocked with FCV-72-22 and FCV-74-3 fully closed A
- 2) FCV-72-20 (25 sec)
- 2) Interlocked with FCV-72-21 and FCV-74-21 fully closed c]
SQNP E S - 1. 2 Unit 1 or 2 Appendix A Page 5 of 5 Rev. 0
~
TRANSFER TO RHR CONTAINMENT SUMP STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED i
10 Establish ERCW To Cntmt Spray Heat Exchangers a.
Check SOI-67 for degraded j
ERCW alignment l
1 b.
OPEN FCV-67-125 (1 min)
)
I c.
OPEN FCV-67126 (1 min) d.
OPEN FCV-67-123 (1 min) l I
e.
OPEN FCV-67-124 (1 min) f.
Verify flow on FI-67-136 and 122 i
l C
11 Verify Cntmt Spray Suction Valves - OPEN 1
l a.
Train A a.
IF train A suction valves can NOT be opened,
- 1) FCV-63-72 THEN do not restart Cntmt Spray Pump A-A i
- 2) FCV-72-23 i
1 b.
Train B b.
E train B suction valves can NOT be opened,
- 1) FCV-63-73 THEN 'do not restart i
Cntmt Spray Pump B-B
- 2) FCV-72-20 12 Start Cntmt Spray Pumps a.
Verify entmt spray flow i
> 4500 gpm
- 1) FI-72-34
- 2) FI-72-13 __.
dd ee nnn nnnn ss eee eeee' oo ppp pppp l l 0
.C CC OOO OOOO 7
WR 1
OI 56 e
33 g
9065 3
LC n
1 1 G78 r
3422 6
FE o
a i
22 333 h
3333 I
R t
P 66 666 c
666G F
c s
CL u
i CC S.
D 2
r o
r 3l4 1
L L
C$C t
in U B4
{
R P
r xf io M
- 2. d 10 U
n S
P e e 6
46 1
5 Np gv T
2 2
QS p a e N
5 SEAPR E
3 3
6 i
MN I
ATN OC
\\.
R f
i R
q_6 %6 9
0 3
9 O
3 3
T R
EF SNA RT g
A E'
g gC S
~
w' 3
4(2
'X+6 S4 6
7 3
93 43 5
6 3
3 1
1 6
[
h 46 f
2
+
~
"M H
~
}
fM b
1 50 1 2 d
dd e
nnnnnn nnn ee 33 s
ss eeeeee eee 66 o
oo pppppp ppp l l l
C C
e 23 67 78 1
g 552 55 PI C
AB M
n 5
446781 r
1 1 2 1 1 E
U o
a i
3 333333 h
333 33 pp R
P t
6 6666C6 c
666 60 mm c
s L
u uu I
i SC S
D PP 2
ro 1
t inU B4 I
3 2
M RW P
l gL xf L S io M
d {g -
1234 H
d U
LLLL 2
2 n
S P
e e CCCC 1
~
N-p g" T
6 b
7 QS pa*
N 5
(
5
\\=
M y'3 w3 k -
SEAP" E
1 N
6 6
1 I
2 AT X3 N
6 OC 2
3 5
5 1
1 R
I I
3 3
R 6,
56 p
O T
R EF SN A
RT p8 3,
8
@6 47 1
X3
~
3 3
_6 6
s R T l
I i
1 5
. 4g).
, R B 7
8 4
g 4
X3
. R 3
l i
6 6
R 5
. R _
3
{
}
l I
6 5
i I
" n 3
N i
AA 1 2 ddddd ddd ss 99 eeeee nn nnnn eee uu 33 sssss ee eeee sss t t pp pppp ooo aa 66 aoooo l l l t t l l l l l C
e 2
C 1
23 g
34 1
357 01 I
n 1 321 2 77 r
9981 331 44 AB E
o a
R 34444 33 h
3333 443 22 pp i
t R
67777 66 c
6666 776 77 c
mm s
I L
u i
uu IRC S
2 D
PP ro r
1 2
b 3 3
b 3
I g
L
(
L L
L L
{
NH k
t 4
4 Y
4 y
g i
4 in M
- 2 U B4
[
P l
N 7
j f
xf
~ S ~
g. - ( -
- 1 P
= tJ ~ ~ $,
_i o M
3 4-
.S y3 a
U 9
>3
- 2. dn3O 6
P e e W3 6
1 Np gv T
0 1
1 QS p a e N
4 8
1 4
N3 y'2 M2 SEAPR E
3 5
M 7
6 3
3 6
7 N
I 4
4 A
r L7
, 7 T
1 1 4 N
O A
8 C
Cp XH
\\
s R
I R
I OT R
EF S
NA R
f T
S C
C 2
3 7
7 g
3 3
1l[6 6
1 j g ($
3'3-g 1
2 1
3 4
4 g
U 6,
7 7
{
P g
o i 1
gg
[
- 0
, h
{g I
34 dd ss 1 3 ee nnnn nn uu 22 ss t t eeee ee 77 Y
oo aa pppp pp A
l l t t C
FF R
e S
12 3023 g
9 01 I
C T
n 22 7272 r
23 44 BA E
M o
a 22 3232 h
22 22 pp R
i T
77 6767 c
77 77 tc mm s
NL u
uu i
CC S
D PP 2
ro 1
t n.
/T /T
/3
{
i U B h2
\\
P 0
1 9
x 2
M 4
W 3
i X2
- 2. d f U
2 n
S 7
7 7
7 P
e 1
N-pEy T
QSp SEA"e N
E
~ gQ t
M
$P l li jH N
kF gP I
A 6
1 T
Y O
I N
H C
i s
R H
R OT R
B FjA E
F B
S A
N A
R T
0 2
3 2
2 X2 y
2 7
7 J
3 MIN '
I L'
7 2
P 7
C3 M
T R y3 D6 U
S 6
I I H
S B R i
~
N 1
1
[
2 h
2 u j_
M2 y
}
r 7
b m
s
.