ML20078E278
| ML20078E278 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 11/01/1994 |
| From: | FLORIDA POWER CORP. |
| To: | |
| References | |
| EOP-03, EOP-3, NUDOCS 9411100215 | |
| Download: ML20078E278 (36) | |
Text
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s DATE:
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_ NR2B SA1G i
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~ Floride Power Corporaties Desement Casteel Crystal River Esergy Comptes 15700 W. Power Lies St.
Crystal River, FL 34428 8700 l
l BIGNATURE OF ADDRESSEE DATE i
coinN0 INT VtanCATiOW iCostrei R,em D meete Ow,i DATE a(
A OI:(T1 Q v
l 9411100215 941101
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PDR ADOCK 05000302 i
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E0P-03 r'~~T f
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.,,].NADQUATE. 5UQ0}J. NG MARGINj E
[,
1.0 ENTRY CONDITIONS Jf in MODES 3 OR 4, AND either of the following conditions exist:
o Tsat Monitor indicates inadequate subcooling margin, o
SPDS indicates inadequate subcooling margin, THEN use this E0P.
AU This Procedure Addresses Safety Related Components D
H!/!N O
Approved by MNP0 db b w Date (V
l (Sig pureonfile)
Table 1 Tsat Monitor Adequate Subcooling Margin:
'\\
RCS Margin
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig s 250 to 70*F
> 150 psig s 150-psig SPDS 5 200*F N/A O
is.>
O E0P-03 REV 02 PAGE 2 of 35 ISM
10 IMMEDIATE ACTIONS ACTIONS ~
DETAILS
[
CAUTION Tripping ALL RCPs > 2 minutes after losing Adequate SCM could cause core damage.
2.1 E s 2 minutes have elapsed since losing ASCM, EG trip ALL RCPs.
E > 2 minutes have elapsed since losing ASCM, 1
^
in each loop.
O 1
O
~1 E0P-03 REV 02 PAGE 3 of 35 SM
)
RULE #1, LOSS OF SUBC00 LING MARGIN e
E adequate subcooling margin is lost,
(
IHER perform the following:
1 Trip ALL RCPs immediately...
2 Ensure FULL HPI...
3 Ensure HPI flows are balanced...
RULE #3, EFW CONTROL 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 E adequate subcooling margin does NOT exist, THEN ensure OTSG levels are continuously progressing towards 80 - 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing >
100 psi below desired setpoint...
RULE #4, PRESSURIZED THERMAL SH0CK 1
The PTS guidelines MUST be implemented when either of the following
)
il conditions exist:
o Forced RCS Flow: Tcold < 380*F AtiQ cooldown rate exceeds T.S.
limit.
o
[{Q Forced RCS Flow: RCPs 0FF ANJ HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
1 Table 1 1
f Tsat Monitor Adequate Subcooling Margin:
I RCS Margin
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig 1 250 to 70*F
> 150 psig 1 150 psig SPDS 1 200*F N/A O
E0P-03 REV 02 PAGE 4 of 35 ISM
4 3.0 FOLLOW-UP ACTIONS Q
iv ACTIONS DETAILS 3.1 ~ - ~ Notify personnel of plant STA conditions as required.
Plant Operators SSOD to evaluate plant conditions for potential entry into the Emergency Plan.
3.2 Ensure the following:
1 BWST suctions to MU open:
o Full HPI flow exists.
o MUV-73 o HPI flow is balanced.
o MUV-58
[ RULE #1, LOSS OF SCM) 2 _ 2 MVPs and associated cooling water pumps operating.
H HPI flow can not be established, 3.
HPI valves open:
lHER GO T0 step 3.18 in this procedure.
MUV-23 MUV-24 MVV-25 MUV-26 4
MVP recirc valves closed:
o MUV-53 o MVV-257 5
Close MUV-27 normal MU.
6 HPI flow is balanced.
3.3 Ensure 0JSG levels are at o Ensure both EFWPs are running and or trending towards EFW flow is controlled.
80 - 90% using EFW.
[ RULE #3, EFW CONTROL]
E EFW is.N_0.1 available, 0
THEN use MFW.
o E 2 500 gpm HPI flow exists, AND an OTSG tube leak exists, lHfN only raise level in the j
unaffected 0TSG.
O I
E0P-03 REV 02 PAGE 5 of 35 ISM
R'JLE #1, LOSS OF SUBC00 LING MARGIN IE adequate subcooling margin is lost, THEN perform the following:
1 Trip ALL RCPs immediately...
2 Ensure FULL HPI...
3 Ensure HPI flows are balanced...
RULE #2, HPI CONTROL 1
Ensure FULL HPI...
2 HPI MUST be throttled to prevent exceeding Pump runout, NDT limit, PTS guidelines...
3 HPI MAY be throttled anytime adequate subcooling exists based on incores.
4 MVP recirc valves MUST be open prior to throttling HPI flow < 200 gpm/ pump...
5 HPI Termination Criteria...
RULE #4, PRESSURIZED THERMAL SHOCK 1
The PTS guidelines MUST be implemented when either of the following conditions exist:
o Forced RCS Flow: Tcoid < 380*F AND cooldown rate exceeds T.S.
limit.
o M Forced RCS Flow: RCPs 0FF AND HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
Table 1 Tsat Monitor Adequate Subcooling Margin:
RCS Margin
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig i 250 to 70*F
> 150 psig i 150 psig SPDS 1 200*F N/A O
E0P-03 REV 02 PAGE 6 of 35 ISM
10 FOLLOW-UP ACTIONS (CONT)
ACTIONS DETAILS 3.4 E RCPs were NOT stopped 1 RCP/ loop must remain running until:
within 2 minutes, JJu@ ensure 1 RCP/ loop o ASCM is restored remains running.
{
o LPI flow 21000 gpm in each line.
E a running RCP trips, J.HM start the other RCP H
in that loop.
Note:
Rule 4, Pressurized Thermal Shock guidelines are applicable.
3.5 E at any time, Engineered o IF RB PRESS > 30 psig and Safeguards systems have or increasing, should have actuated, THEN ensure BSP-1A and BSP-1B are IjiG ensure ES status operating with = 1550 gpm flow each.
lights are blue for the actuated systems.
o E RBIC is actuated, THEN bypass actuation,
! O AND restore RCP seal return and SW cooling to running RCPs.
o E LPI is actuated, THEN bypass actuatier.,
E control LPI:
E RCS PRESS > 500 psig, THEN stop both LPI pumps.
@ LPI FLOW < 300 gpm, THEN refer to Enclosure 2, LPI Low Flow Control.
o E HPI is actuated, THEN bypass and control HPI.
[ RULE #1, LOSS OF SUBC00 LING MARGIN)
[ RULE #2, HPI CONTROL)
O E0P-03 REV 02 PAGE 7 of 35 ISM
Applicable Carry-over steps:
3.5 If ES has or should have actuated...
RULE #4, PRESSURIZED THERMAL SH0CK 1
The PTS guidelines Mjil be implemented when either of the following conditions exist:
o Forced RCS Flow: Tcoid < 380*F AND cooldown rate exceeds T.S.
limit.
o
@ Forced RCS Flow: RCPs 0FF 6@ HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
Table 1 Tsat Monitor Adequate Subcooling Margin:
RCS Margin
> 1500 psig 30*F i 1500 to 50*F
> 250 psig i 250 to 70*F
> 150 psig A
1 150 psig SPDS 1 200*F N/A i
I O
E0P-03 REV 02 PAGE 8 of 35 ISM
3.0 FOLLOW-UP ACTIONS (CONT)
ACTIONS DETAILS 3.6 IE LPI flow is 21000 gpm
-in each injection line, 1818 GO TO E0P-08, LOCA Cooldown, beginning with step 3.1.
'3. 7 1E RCS leak exists, o
if PORV is NOT required to be IHEN isolate possible leak open for HPI/PORV cooling, paths.
IHEN close RCV-11, PORV block valve.
1 Isolate potential leak sources.
o Close RCV-13, PZR spray block valve.
2 Observe for indication of leak isolation.
o Ensure DHV-3 is closed.
3 Return components to o
Close letdown cooler inlet service if they are valves:
eliminated as the O
source of the leak.
MVV-38 MUV-39 MVV-498 i
3.8 1E incores indicate 1 20*F Tsat monitor or SPDS indicate 1 20*F superheat, superheat.
IEEH GO TO E0P-07, Inadequate Core Cooling, beginning with step
+
3.1.
i 3.9 1E RC TEMP is increasing Any of the following exist:
due to lack of heat i
- transfer, o Loss of EFW AND MFW, IdfN o No OTSG available, GO TO E0P-04, Inadequate Heat Transfer, beginning with step o Incore temperatures rising.
3.1.
O E0P-03 REV 02 PAGE 9 of 35 ISM
4 Applicable Carry-over steps:
r~
3.5 IE ES has or should have actuated...
()T RULE #4, PRESSURIZED THERMAL SH0CK 1
The PTS guidelines $11 be implemented when either of the following conditions exist:
o forced RCS Flow: Tcoid < 380'F AND cooldown rate exceeds T.S.
limit.
o M Forced RCS Flow: RCPs OFF AND HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
Table 1 Tsat Monitor Adequate Subcooling Margin:
RCS Margin
> 1500 psig 30*F s 1500 to 50*F
> 250 psig i 250 to 70*F
> 150 psig s 150 psig SPDS 1 200*F N/A O
E0P-03 REV 02 PAGE 10 of 35 ISM
3.0-FOLLOW-UP ACTIONS (CONT)
ACTIONS ~
DETAILS l
3.10 E RC TEMP is decreasing o Cooldown can NOT be controlled.
due to excessive primary to secondary heat o OTSG PRESS decrease can NOT be
- transfer, controlled.
M GO TO E0P-05, Excessive Heat Transfer, beginning with step 3.1.
3.11 E OTSG tube leak exists, Condenser or MS line radiation M
monitors have alarmed:
GO TO E0P-06, Steam Generator Condenser exhaust monit'or: RMA-12 Tube Rupture, beginning with step 3.1.
MS line monitors:
o RMG-25 o RMG-27 o RMG-26 o RMG-28 3.12 E adequate subcooling Refer to Table 1, Adequate Subcooling i
margin has NOT been Margin.
3.13 H NO OTSG is available OTSG heat transfer is available IF all for heat transfer, 3 of the following conditions exist, M
MFW or EFW or AFW available GO TO E0P-08, LOCA Cooldown, beginning with step 3.1.
TBVs or ADVs available OTSG integrity exists i
1 O
E0P-03 REV 02 PAGE 11 of 35 ISM
4 Applicable Carry-over steps:
p 3.5 If ES has or should have actuated...
d RULE #4, PRESSURIZED THERMAL SH0CK 1
The PTS guidelines MUST be implemented when either of the following conditions exist:
o forced RCS Flow: Tcold < 380*F eM cooldown rate exceeds T.S.
limit.
o
@ Forced RCS Flow: RCPs 0FF AND HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
+
Table 1 Tsat Monitor Adequate Subcooling Margin:
RCS Margin
> 1500 psig 30*F s 1500 to 50*F
> 250 psig s 250 to 70*F
> 150 psig s 150 psig SPDS 1 200*F N/A Table 2 OTSG Tube to Shell AT Limits:
Tensile AT Limit: Avg Tshell - Icold 1 100*F Compressive AT Limit: Thot - Avg Tshell 5 60*F "A" OTSG shell Temps: A-730, 731, 732, 733, 734, Avg: R-771 "B" 0TSG shell Temps: A-735, 736, 737, 738, 739, Avg: R-772 i
O E0P-03 REV 02 PAGE 12 of 35 ISM
3.0 FOLLOW-UP ACTIONS (CONT) 1 O
C/
ACTIONS DETAILS PLANT STATUS:
ADEQUATE SUBC00 LING MARGIN EXISTS OTSG HEAT TRANSFER EXISTS N0_TJ Starting an RCP could result in a temporary loss of adequate subcooling margin due to collapsing of voids. All RCPs must be secured if ASCM does not recover within 2 minutes.
3.14 If, at any time while RCPs are available when ALL of the performing this E0P, N0 following conditions exist:
RCPs are running, AND RCPs become available, 6900V Rx Aux Bus is energized THEN start at least 1 RCP.
2 70*F Subcooling Margin exists All RCP start permissives are met Compressive Tube to Shell AT is
< 60*F.
Refer to Table 2.
RCP starting:
1 Establish PZR level 2 200" 2
If either OTSG is available, THEN start 1 RCP in each loop starting the RCP in the loop with the highest OTSG level first.
JF N0 OTSG is available, IHQi start 1 RCP.
r k
E0P-03 REV 02 PAGE 13 of 35 ISM
e Applicable Carry-over steps:
O 3.5 If ES has or should have actuated...
3.14 Start at least 1 RCP when available...
RULE #4, PRESSURIZED THERMAL SH0CK 1
The PTS guidelines MM11 he implemented when either of the following conditions exist:
o forced RCS Flow: Tcoid < 380'F AND cooldown rate exceeds T.S.
limit.
o MQ Forced RCS Flow: RCPs 0FF AND HPI flow exists.
2 PTS guidelines: Ensure minimum adequate subcooling margin is maintained...
Table 1 Tsat Monitor Adequate Subcooling Margin:
RCS Margin
> 1500 psig
F 5 1500 to 50*F
> 250 psig s 250 to 70*F
> 150 psig (s
1 150 psig SPDS 1 200'F N/A i
O E0P-03 REV 02 PAGE 14 of 35 ISM J
i 3.0 FOLL93-UP ACTIONS (CONT) v ACTIONS DETAILS 3.15 _ E this E0P was entered,
while responding to a reactor trip, ltid GO TO E0P-02, Vital System Status Verification, beginning with step 3.1.
3.16 E RCS leak exists, A._ttQ leak rate is > 50 gpm, IliW GO TO E0P-08, LOCA Cooldown, at step 3.1.
3.17 GO TO E0P-10, Post-Trip Stabilization, beginning with step 3.1.
i O
E0P-03 REV 02 PAGE 15 of 35 ISM
s RULE #3, EFW CONTROL 1
Ensure EFW flow limits are NOT exceeded...
A 2
Ensure required 0TSG level...
- d 3
If adequate subcooling margin does NOT exist, JH W ensure OTSG levels are continuously progressing towards 80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing >
100 psi below desired setpoint...
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig i 250 to 70*F
> 150 psig l
5 150 psig SPDS l
5 200*F N/A O
O l
E0P-03 REV 02 PAGE 16 of 35 ISM
3.0 FOLLOW-UP ACTIONS (CONT)
ACTIONS DETAILS Status o
Inadequate SCM exists o
No HPI flow is available o
Efforts to restore HPI flow are in progress.
CAUTION The PORV and the HPVs should remain closed during performance of this procedure unless specifically directed otherwise.
3.18 Ensure OTSGs levels are at Establish and maintain OTSG levels or trending towards 80 to using EFW.
90%.
(Rule 3, EFW Control)
.lF EFW is NOT available, THEN use MFW.
Note Steaming with both the TBVs and ADVs will initially result in steam flow exceeding EFW capability, resulting in OTSG level decrease.
3.19 Establish and maintain a 1
Reduce and maintain OTSG cooldown at the maximum pressure as low as possible.
rate possible, using both OTSGs.
o Open TBVs fully o Open ADVs fully.
2 Maintain cooldown at the maximum rate until HPI is restored or until LPI is injecting 2 1000 gpm per line.
O E0P-03 REV 02 PAGE 17 of 35 ISM
l Applicable Carry-over steps:
/
l 3.19 Establish and maintain maximum cooldown rate possible...
(]./
Rule 3, EFW Control 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 IE adequate subcooling margin does NOT exist, JJim ensure OTSG levels are continuously progressing towards 80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psi below desired setpoint...
Ugte Steaming with both the TBVs and ADVs will initially result in steam flow exceeding EFW capability, resulting in OTSG level decrease.
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F s 1500 to 50*F
> 250 psig 5 250 to 70'F
> 150 psig l
1 150 psig SPDS l
1 200*F N/A O
l ISM E0P-03 REV 02 PAGE 18 of 35
3.0 FOLLOW-UP ACTIONS (CONT)
ACTIONS DETAILS 3.20
)LHLN either OTSG PRESS is 1.
Depress "< 725 PSI STM GEN PRESS between 725 and 600 psig, EFIC ACT BYPASS" pushbuttons:
It!B bypass EFIC MS and MFW isolation actuations.
" CHANNEL A" Continue on in this
" CHANNEL B" procedure.
" CHANNEL C"
" CHANNEL D".
2 Depress both "EFIC CHAN TO EFP START LOGIC" " MANUAL PERMISSIVE" pushbuttons to ensure EFW flow is not interrupted as OTSG PRESS decreases < 600 psig:
o EFIC channel A " MANUAL PERMISSIVE" o EFIC channel B " MANUAL PERMISSIVE".
l O
E0P-03 REV 02 PAGE 19 of 35 ISM
l Applicable Carry-over steps:
O 3.19 Establish and maintain maximum cooldown rate possible...
V 3.20 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
Rule 3, EFW Control 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 If adequate subcooling margin does NOT exist, IllEN ensure OTSG levels are continuously progressing towards 80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psi below desired setpoint...
Note Steaming with both the TBVs and ADVs will initially result in steam flow exceeding EFW capability, resulting in OTSG 1evel decrease.
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig 1 250 to 70*F
> 150 psig l
1 150 psig SPDS l
1 200*F N/A
)
O v
E0P-03 REV 02 PAGE 20 of 35 ISM
l Applicable Carry-over steps:
3.19 Establish.and maintain maximum cooldown rate possible...
V]
3.20 Bypass EFIC MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
Rule 3, EFW Control 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 If adequate subcooling margin does NOT exist, ItiG ensure CTSG 1evels are continuously progressing towards 80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psi below desired setpoint...
%,'y Note Steaming with both the TBVs and ADVs will initially result in steam s
flow exceeding EFW capability, resulting in OTS'i level decrease.
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin d
l
> 1500 psig 30'F 1 1500 to 50*F
> 250 psig i 250 to 70*F
> 150 psig l
1 150 psig SPDS l
1 200'F N/A O
E0P-03 REV 02 PAGE 20 of 35 ISM
~
3.0 FOLLOW-UP ACTIONS (CONT)
ACTIONS DETAILS t
Note Nat Circ may become intermittent as RC voids increase. During these l
periods of no Nat Circ flow, RC PRESS may increase and require manual PORV operation.
3.21 J1 at any time while 1
Determine OTSG PRESS and I
performing this procedure corresponding RC PRESS to close I
l section, RC PRESS is PORV.
> 2400 psig, l
THEN reduce RC PRESS based PORV operation based on OTSG on OTSG PRESS.
PRESS l
OTSG PRESS RC PR'ESS to close PORV 1000 psig 1475 psig 950 psig 1425 psig Q
900 psig 1350 psig V
850 psig 1275 psig l
800 psig 1200 psig 750 psig 1150 psig 700 psig 1125 psig
< 650 psig 1000 psig l
l 2
Open the PORV and leave it open until RC PRESS decreases to the PRESS corresponding to the OTSG PRESS.
3 Close the PORV.
If the PORV fails tc. close, THEN close RCV-Il PORV block.
O E0P-03 REV 02 PAGE 21 of 35 ISM
l Applicable Carry-over steps:
3.19 Establish and maintain maximum cooldown rate possible...
.()
3.20 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
3.21 Control RC PRESS < 2400 psig using PORV...
Rule 3, EFW Control 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 IE adequate subcooling margin does NOT exist, IHEN ensure OTSG levels are continuously progressing towards-80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psi below desired setpoint...
Note Steaming with both the TBVs and ADVs will initially result in steam flow exceeding EFW capability, resulting in OTSG level decrease.
Table 1: Tsat Monitor Adequate Subcooling Margin
. ()
l RCS Margin l
> 1500 psig 30*F
$ 1500 to 50'F
> 250 psig 5 250 to 70*F.
> 150 psig l
$ 150 psig SPDS l
s 200*F N/A I
O E0P-03 REV 02 PAGE 22 of 35 ISH
- e-a m
-sw w
a me owe
I~
1 3.0 FOLLOW-UP ACTIONS (CONTl ACTIONS DETAILS 3.22 E RCPs are not available RCPs are available for bumping if both for bumping, of the following conditions exist:
ItiM GO T0 step 3.27 in this procedure.
o RCP power is available, o All RCP start permissives except for seal injection are met.
3.23 E Nat Circ heat transfer Indication of Nat Circ in both RC exists in both RC loops, loops:
IliB GO T0 step 3.27 in this procedure.
Tcoid coupled with and tracking Tsat for both OTSGs AT (Tincore - Tcoid) develops and stabilizes Tincore within 10*F of Thot 3.24 _ E at any time while HPI 1
Bypass RCP start permissives to is unavailable, Nat Circ allow bump without seal is lost in any RC loop, injection flow.
It[M bump 1 RCP.
2 __ Ensure RCV-10 PORV is closed 3 _ Bump RCP in loop with highest OTSG level first.
I 3.25 E Nat Circ heat transfer Indication of Nat Circ in both RC exists in both RC loops 10 loops:
to 15 minutes after RCP
AT (Tincore - Tcoid) develops and stabilizes Tincere within 10*F of That O
E0P-03 REV 02 PAGE 23 of 35 ISM
l Applicable Carry-over steps:
~N 3.19 Establish and maintain maximum cooldown rate possible...
(U 3.20 Bypass EFIC MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
3.21 Control RC PRESS < 2400 psig using PORV...
3.24 If Nat Circ is lost in any RC loop, THEN bump available RCPs...
Rule 3, EFW Control 1
Ensure EFW flow limits are NOT exceeded...
2 Ensure required 0TSG level...
3 If adequate subcooling margin does NOT exist, IEW ensure OTSG levels are continuously progressing towards 80 to 90%...
4 EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psi below desired setpoint...
Note Steaming with both the TBVs and ADVs will initially result in steam flow exceeding EFW capability, resulting in OTSG level decrease.
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F s 1500 to 50*F
> 250 psig 5 250 to 70*F
> 150 psig l
1 150 psig SPDS l
1 200'F N/A E0P-03 REV 02 PAGE 24 of 35 ISM I
3.0 FOLLOW-UP ACTIONS (CONIl O)
(s, ACTIONS DETAILS 3.26 Bump available RCPs one at Repeat steps 3.23, 3.24, and 3.25 for a time, allowing 10 to 15 the available RCPs until any of the minutes between bumps.
following conditions exist:
o Nat Circ heat transfer exists o HPI flow is restored o LPI is flowing into the core RCP-1A RCP-1B RCP-lc RCP-lD O
E0P-03 REV 02 PAGE 25 of 35 ISM
l Applicable Carry-over steps:
3.19 Establish and maintain maximum cooldown rate possible...
O 3.20 Bypass EFIC'MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
3.21 Control RC PRESS < 2400 psig using PORV...
3.24 IE Nat Circ is lost in any RC loop, It!EU bump available RCPs...
Rule 2, HPI Control 1
Ensure FULL HPI...
2 HPI must be throttled to prevent exceeding pump runout, NDT limit, PTS guidelines...
3 HPI may be throttled anytime adequate SCM exists based on Tincere.
4 MVP recirc valves must be open prior to throttling HPI flow
< 200 gpm/ pump...
5 HPI termination criteria...
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F s 1500 to 50*F
> 250 psig 5 250 to 70*F
> 150 psig d
l 5 150 psig SPDS l
5 200*F N/A Table 3: Cooldown Rate Limits l
RCP Status RCS Temp Cooldown Limit
> 1 RCP
> 280'F s 50*F \\ hr Running 280 to 150*F 1 25'F \\ hr No RCPs RC Press maintained s 25'F \\ hr Running above Nat Circ Curve of Figure 1 l
> 280*F s 5'F \\ hr l
280 to 150*F 1 2.5'F \\ hr O
E0P-03 REV 02 PAGE 26 of 35 ISM
3.0 FOLLOW-UP ACTIONS (CONT) e]
(
ACTIONS DETAILS 3.27 Ensure CFT isolation To open CFT isolation valves:
valves are open.
1 Notify available PP0 to unlock and close Bkrs for CFT isolation valves at ES MCC 3AB:
o CFV-5 unit 6B o CFV-6 unit 6C.
2 _ Open CFT isolation valves:
o CFV-5 o CFV-6.
l 3.28 Energize all HPVs.
Notify available PP0 to energize the HPVs by closing the following switches:
DPDP-8A switch 13 DPDP-5A switch 1 DPDP-58 switch 1 3.29 Continuous efforts should Nuclear Shift Manager be made to establish HPI fl ow.
Emergency Repair Team Accident Assessment 3.30 WHEN HPI has been o Control cooldown rate using TBVs or established, ADVs.
1113 use TBVs and ADVs to reduce cooldown rate s ITS o Do not throttle HPI until adequate limits and GO 10 step 3.1 SCM has been restored.
in this procedure.
[ Rule 2, HPI Control]
Continue on in this procedure.
See Table 3: Cooldown Rate Limits.
O E0P-03 REV 02 PAGE 27 of 35 ISM
l Applicable Carry-over steps:
('
3.19 Establish and maintain maximum cooldown rate possible...
3.24 If Nat Circ is lost in any RC loop, T!!M bump available RCPs...
3.29 Continuous efforts should be made to establish HPI flow...
3.30 ElifH HPI has been established, THEN control cooldown rate using TBVs and ADVs...
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F s 1500 to 50*F
> 250 psig s 250 to 70*F
> 150 psig l
1 150 psig SPDS l
5 200*F N/A Table 3: Cooldown Rate Limits l
RCP Status RCS Temp Cooldown Limit
> 1 RCP
> 280*F s 50*F \\ hr Running 280 to 150'F 1 25'F \\ hr No RCPs RC Press maintained 5 25'F \\ hr Running above Nat Circ Curve of Figure 1 l
> 280'F s 5'F \\ hr l
280 to 150*F s 2.5'F \\ hr 7
O E0P-03 REV 02 PAGE 28 of 35 ISM
3.0 FOLLOW-UP ACTIONS (CONT)
(~(s)
ACTIONS DETAILS WiEN RC pressure < 600 CFT levels lowering 3.31 j
- psig, T! B observe CFT CFT level alarm annunciates discharge.
CFT PRESS lowers with RC PRESS 3.32 Maintain maximum possible Maintain:
cooldown rate until HPI is restored or until LPI flow ADVs and TBVs full open is 21000 gpm per line.
OTSGs feeding for 80 to 90%
level Nat Circ in both RC loops O
,O v
E0P-03 REV 02 PAGE 29 of 35 ISM
l Applicable Carry-over steps:
1 s
3.24 If Nat Circ is lost in any RC 1rp, THEN bump available RCPs...
k']s 3.29 Continuous efforts should be made to establish HPI flow...
)
3.30 WHEN HPI has been established, THEN control cooldown rate using TBVs and ADVs...
3.32 Maintain maximum possible cooldown until HPI or LPI flow exists
{
Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin
{
l
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig 5 250 to 70*F l
> 150 psig l
s 150 psig i SPOS l
5 200'F N/A i
Table 3: Cooldown Rate Limits l
RCP Status RCS Temp Cooldown Limit
-< 50*F \\ hr
> 1 RCP
> 280*F iiunning 280 to 150'F s 25'F \\ hr No RCPs RC Press maintained 5 25'F \\ br Running above Hat Circ Curve of Figure 1 l
I l
> 280*F 5 5'F hr l
280 to 150*F 5 2.5'F hr l
l I
GU l'40.1 REV 02 PAGE 30 of 35 ISt!
V
i 3.0 FOLLOW-UP ACTIONS (CONT)
I A,[.T_L@l1 DETAILS 3.33 EtifE ES LPI actuation 1
Ensure LPI suction valves from
- occurs, BWST are open:
Ilif3 bypass actuation and ensure LPI operation.
o DHV-34 o DHV-35.
2 Ensure LPI injection valves are open:
o DHV-5 o DHV-6.
3.
Ensure LPI train pumps are operating:
LPI train pumps DCP-1A DCP-1B RWP-3A RWP-3B DHP-1A DHP-18 4
Ensure LPI flow control valves open to control at 3000 gpm:
o DHV-Il0 o DHV-111.
O E0P-03 REV 02 PAGE 31 of 35 ISM
j.
Applicable Carry-over steps:
j O
3.19 Establish.and maintain maximum cooldown rate possible...
3.29 Continuous. efforts should be made to establish HPI flow...
i 3.30 ) MEN HPI has'been established, LHEN control cooldown rate using TBVs and.ADVs...
3.32 Maintain maximum possible cooldown until HPI or LPI flow exists Table 1: Tsat Monitor Adequate Subcooling Margin l
RCS Margin l
> 1500 psig 30*F i
s 1500 to 50*F
> 250 psig i
s 250 to 70'F
> 150 psig l
5 150 psig SPDS l
s 200*F N/A Table 3: Cooldown Rate Limits l
RCP Status PCS Temp Cooldown Limit
> 1 RCP
> 280.*F s 50*F % hr O-Running
-l 280 to 150'F 1 25'F % hr No RCPs RC Press maintained 1 25'F % hr Running above Nat Circ Curve of Figure 1 l
> 280*F s 5'F hr l
280 to 150*F s 2.5'F % hr i
f 4
i O
E0P-03 REV 02 PAGE 32 of 35 ISM
]
.~.
3.0 FOLLOW-UP ACTIONS (CONT)
ACTIONS' DETAILS 3.34 E 'LPI flow is < 300 gpm Increase LPI flow to-2 300 gpm per per pump, pump.
M Open the PORV and HPVs as required to 1
Open RCV-10 PORV.
increase LPI flow to 2 300 gpm per pump.
2 E LPI flow is < 300 gpm per l
- pump, M energize and open all HPVs.
HPVs PZR A hot leg B hot leg RCV-159 __RCV-157 RCV-163 RCV-160 RCV-158 RCV-164 I
l 3.35 M LPI flow has been Continue efforts to establish' HPI flow established, until LPI flow is 1 1000 gpm for 20 O
Cooldown, beginning with step 3.1.
O E0P-03 REV 02 PAGE 33 of 35 15M
r t
O b
-BLANK PAGE O
O E0P-03 REV 02 PAGE 34 of 35 ISg i
Fiaure 1 Cooldown Curve for Watural Circulation and Forced Flow 2000 NORMAL POST TRIP WINDOW 2400 2-2200
=.
NDT CURVE l 2000
'ASCM s
1800
. CURVE
$ 1600 Tn o.
NATURAL v 1400 CIRCULATION -
CURVE S.
1200
- \\
1000 4
-~
M O
a
[
s ISAT ATION
~
~
CURVE 400 200 0
100 200 300 400 500 600 7.00 RCS TEMPERATURE *F Acceptable region is:
o below and to the right of the NDT curve o
above and to the left of the adequate SCM curve o
above and to the left of the Natural Circulation curve if RCPs are off and cooldown rate 110 F/hr E0P-03 REV 02 PAGE 35 of 35 (LAST PAGE)