ML20024J393
| ML20024J393 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/06/1994 |
| From: | Halnon G FLORIDA POWER CORP. |
| To: | |
| References | |
| EOP-09, EOP-9, NUDOCS 9410170216 | |
| Download: ML20024J393 (38) | |
Text
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L
.r DDCUMENT TRANSMITTAL 20900 FOR DOCUMENT NOTIFICATION AND/OR TRANSMITTAL TO: NRC (DC DESK)
MAC: N/A DESTINATION:
DESCRIPTION:
i DATE:
Fri Oct 07 08:58:27 1994 CPY COPY TOTALS DOCUMENT
'REV COMMENTS INFO CNTL MSTR EOP0009 01 7
1 0
0
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{
l ESTRUCTION8 TO THE ADDRESSEE:
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_,J_ -4 e '
8A1G NA1C
_ Floride Power Corporatina
{
Deemment Centret Crystal River Energy Comples j
15700 W. Power Line St.
Crystal River, FL 34428 8708 81GNATURE OF ADDRE88EE DATE INDEPENDENT VERIFICAil0N {Centrel Reen Deen neese 0nly)
DATE I
9410170216 941006 o
PDR ADOCK 05000302
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NCCD REV 01 E0P-09 7-(_j
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A 1.0 ENTRY ! CONDITIONS-
_s-J.E Nat Cire is required to provide core cooling, AN_Q no other E0P is applicable, IHER use this procedure.
2.0 IMMEDIATE ACTIONS Hote.
There are no immediate actions for this procedure.
(h LJ l
This Procedure Addresses Safety Related Components
.n.
Aft 0&& for6W oate 10 94 Approved by MNP0 (Signatura on file)
E0P-09 PAGE 1 of 37 NCCD i
c
s'~
I.
s Rule 3, EFW Control t)
1.
Ensure EFW flow limits are not exceeded...
x_ /
2.
Ensure required 0TSG level...
3.
If adequate SCM does not exist, IdEB ensure OTSG levels are continuously progressing towards 80 to 90%...
4.
EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psig below desired setpoint...
Rule 4, Pressurized Thermal Shock 1.
The PTS guidelines must be implemented when any of the following conditions exist:
o Forced RC flow: Teoid < 380*F and cooldown rate exceeds ITS limit.
o No forced RC flow: RCPs off and HPI flow exists.
2.
PTS guidelines, ensure minimum adequate SCM is maintained.
.e
%_J I
G)
E0P-09 REV 01 PAGE 2 of 37 NCCD
A 3.0 FOLLOW-UP ACTIONS
(_ l ACTIONS DETAILS
~ _.. - -. -. -
Status o
RCPs are not available, o
Adequate SCM exists.
59.t2 Rule.4, Pressurized Thermal Shock guidelines are applicable if HPI has been used with RCPs off.
3.1 Ensure OTSGs levels are at Establish OTSG levels using EFW.
or trending towards 60 to
[ Rule 3, EFW Control]
70%.
E EFW is NOT available, e.,
e w.
M geJ W._
h 3.2 E MFW is being used to o FWV-40, 01SG A SUCV d
feed the OTSGs, AND MFW TEMP is > 150*F, o FWV-39, OTSG B SUCV M establish and maintain OTSG level 60 to 70% using SUCVs in manual.
1 Steaming the OTSGs may be required to promote Nat Cire while feeding up to j
level.
O E0P-09 REV 01 PAGE 3 of 37 NCCD
r T
Rule 3, EFW Control O
1.
Ensure EFW flow limits are not exceeded...
2.
Ensure required 0TSG level...
3.
If adequate SCM does not exist, JJi@ ensure OTSG levels are continuously progressing towards 80 to 90%...
4.
EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psig below desired setpoint...
(D
's )
E0P-09 REV 01 PAGE 4 of 37 NCCD f
r-W 3.0 FOLLOW-UP ACTIONS (CONT'D) i J
ACTIONS DETAILS l
3.3 IE MFW is being used to Components to be operated are listed feed the OTSGs, in the table below.
AND MFW TEMP is 1 150*F, IBEH transfer MFW to the 1
Notify available SP0 to unlock 0TSG upper nozzles, and close the DPDP switches that limitingfjowto power EMBVs.
< 0.7 x 10 lbm/hr per 0TSG.
2 Ensure MFW n ow to each 0TSG is
< 0.7 x 10glbm/hr.
3 Open EMBVs to OTSGs.
4 Close SUBVs.
5 Control feed flow using the SUCVs.
[ Rule 3, EFW Control]
Components listed by 0TSG
'~~
OTSG A
B
~'
EMBV DPDP-8A DPDP-8B power supply 9
11 switches 10 12 EMBV FWV-35 FWV-34 SUBV FWV-36 FWV-33 SUCV FWV-40 FWV-39 A -4, or6
+
x E0P-09 REV 01 PAGE 5 of 37 NCCD
W Table 1: Nat Circ Cooldown Limits
,cs
(_/
RC Tincore Cooldown limit RC PRESS. maintained above Nat Circ curve 1 25'F/% hr of Figure 1
> 280*F 15'F/% hr 280 to 150*F 1 2.5'F/\\ hr bi V
(
l E0P-09 REV 01 PAGE 6 of 37 NCCD
r~~
3.0 FOLLOW-UP ACTIONS (CONT'D) s
/
h U
ACTIONS DETAILS 1.4 Verify Nat Cire exists in Verify indications of Nat Circ:
at least 1 OTSG.
Tcoid coupled with and tracking IE Nat Circ cannot be Tsat for OTSGs
- verified, IBIN G010 E0P-04, AT (Tincore - Tcold) develops and Inadequate Heat Transfer, stabilizes beginning with step 3.1.
Tincore within 10*F of Thot.
3.5 If cooldown is in o Use TBVs or ADVs to control cooldown
- progress, rate.
IBEN maintain cooldown rate within limits.
o See Table 1 for Nat Circ Cooldown Limits.
4 (3
(_ /
3.6 If PZR Htrs are NOT o Adjust makeup and letdown flow to available, control RC PRESS.
AND RC PRESS control cannot be maintained, o Stabilize RC TEMP using TBVs or IHEN establish solid plant ADVs.
PRESS control.
3.7 IE PZR Htrs are available, Establish high PRESS Aux spray flow IBEH maintain RC PRESS path using 0P-305, Operation cf the control using Htrs and Pressurizer, Section 4.3.
high PRESS Aux spray.
e
%.)
i E0P-09 REV 01 PAGE 7 of 37 NCCD
P1,, -,.
Table 1: Nat Circ Cooldown Limits RC Tincor.
Cooldown limit RC PRESS. maintained above Nat-Cire curve 1 25'F/4 hr of Figure 1
> 280*F 1 5'F/% hr 280 to 150*F 1 2.5'F/4 hr t
i
? *.<e weny..
O O
E0P-09' REV 01-PAGE 8 of 37 NCCD i
-9 4..
p 3.0 FOLLOW-UP ACTIONS (CONT'D)
- V ACTIONS' DETAILS I
3.8 JE steaming to atmosphere, Close all MSIVs:
IHEN close the MSIVs to isolate non-essential MSV-412 steam loads and control RC cooldown.
MSV-413 MSV-411 MSV-414.
3.9 IE steaming to the AS loads to isolate condenser, IHEN isolate non-essential Load A OTSG B OTSG AS loads' to control RC cooldown.
MFWP __ MSV-107 _ MSV-108 GS MSV-58 MSV-57 MSV-30 MSV-29 MSV-32 MSV-31 DFT N/A
_ MSV-180 AS
_ MSV-179 N/A
- -e 4
O E0P-09 REV 01 PAGE 9 of 37 NCCD
t -
4 Table 1: Nat Circ Cooldown Limits
. _j)
RC Tincere Cooldown limit l RC PRESS. maintained above Nat Circ curve 1 25'F/\\ hr of Figure 1
> 280'F s 5'F/) hr 280 to 150*F 1 2.5'F/ hr
_T;ble 2: Adequate SCM 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
/~~' )
Table 3: 0TSG Tube to Shell AT Limits Tensile AT Limit (Avg TsheH - Icold) s 100*F Compressive AT Limit (That - Avg Tshen) 1 60*F A OTSG shell Temps A730 A731 A732 A733 A734 Avg R771 B OTSG shell Temps A735 A736 A737 A738 A739 Avg R772
... s e.--
o..
i
)
~s E0P-09 REV 01 PAGE 10 of 37 NCCD
p 3.'0 FOLLOW-UP ACTIONS (CONT'D) v ACTIONS DETAILS CAUTION Starting an RCP could result in a temporary loss of adequate SCM due to collapsing of voids. All RCPs must be' secured if adequate SCM does not recover within 2 minutes.
KQ13 Starting RCP-1B will provide maximum PZR spray capability.
3.10 JE at any time while performing RCPs are available when all of the this procedure, RCPs become following conditions exist:
avail able, IHEN:
6900V Rx Aux Busses energized Ensure PORV is closed 2 70*F SCM exists, See Table 2 Start at least 1 RCP All RCP start permissives are O
met GO TO E0P-10, Post-Trip Stabilization, beginning Compressive tube to shell AT is with step 3.1.
1 60*F, See Table 3.
RCP starting:
1 Ensure PORV is closed.
2 Jf RCPs were tripped due to loss of SCM,
.TffH establish PZR level 2 200".
3 Jf either OTSG is available, IEEN start 1 RCP in each loop, starting the RCP in the loop with the highest OTSG-level first.
If no OTSG is available, THEN start 1 RCP.
4 GO TO E0P-10, Post-Trip Stabilization, beginning with step 3.1.
E0P-09 REV 01 PAGE 11 of 37 NCCD
~
Applicable carry-over steps:
3.10 Start at 1sast 1 RCP when available...
Table 1: Nat Circ Cooldown Limits RC Tincere l Cooldown limit RC PRESS maintained above Nat Cire curve 1 25'F/ hr of Figure 1
> 280*F 1 5'F/\\ hr 280 to 150*F s 2.5'F/ hr i
\\ _./
4
, ~\\
~~.
E0P-09 REV 01 PAGE 12 of 37 NCCD
/
3.0 FOLLOW-UP ACTIONS (CONT'0) k ACTIONS DETAILS 3.11 Ru W either OTSG PRESS is Depress "< 725 PSI STM GEN PRESS EFIC between 725 and 600 psig, ACT BYPASS" pushbuttons:
IjiG bypass EFIC MS and MFW isolation actuations.
" CHANNEL A" Continue on in this procedure.
" CHANNEL B"
" CHANNEL C"
" CHANNEL rf,
3.12 If EFWPs are operating CD fill to EFT-2 is available when CD with suction from EFT-2, Hdr PRESS is 2 50 psig.
ANS CD is available, JJim maintain EFT-2 level All referenced valves are located 95 10 to 37 ft.
ft TB behind the Atmospheric Drain Tank.
Continue on in this procedure.
1 Ensure CD Hdr PRESS is 1 50 psig.
2 Notify available SP0 to open CDV-260.
3 Notify available SP0 to initially throttle CDV-259 two turns open, then adjust as required to achieve desired fill rate.
4 W!lB EFT-2 fill from CD is no
_ longer desired, THEN notify available SP0 to close:
o CDV-259 o CDV-260.
<6 E0P-09 REV 01 PAGE 13 of 37 NCCD
Applicable carry-over steps:
3.10 Start at least 1 RCP when available...
3.11 8ypass EFIC MSLI and MFLI at 725 to 600 psig OTEG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
Rule 3, EFW Control 1.
Ensure EFW flow limits are not exceeded...
2.
Ensure required OTSG level...
3.
IE adequate SCM does not exist, IEfB ensure OTSG levels are continuously progressing towards 80 to 90%...
4.
EFW flow should be throttled to prevent OTSG PRESS from decreasing
> 100 psig below desired setpoint...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Circ curve 1 25'F/\\ hr of Figure 1
> 280*F.
1 5'F/i br +
280 to 150*F s 2.5'F/% hr 7U
/'~'s L~-)
1 E0P-09 REV 01 PAGE 14 of 37 NCCD
c,.
3.0 FOLLOW-UP ACTIONS (CONT'D)
' ACTIONS DETAILS 3.13 E at any time while Notify available SP0 to unlock and performing this procedure, open CDV-103, CST isolation to EFWP EFT-2 level cannot be suction.
maintained 2 8.5 ft while supplying EFWPs, JJiB establish EFWP suction from the CST.
3.14 E an OTSG tube leak Observe'RMA-12, condenser exhaust
- exists, monitor and MS line radiation monitors M GO TO E0P-06, Steam and recorder traces for trends and Generator. Tube-Rupture, alarms.
beginning with step 3.1.
MS line monitors OTSG
'A
B ADV RMG-25 RMG-28 MS line RMG-27 RMG-26 3.15 E RC cooldown is MQI o use TBVs or ADVs to maintain RC
- required, TEMP.
E maintain RC TEMP as directed while restoration o EFW may be throttled to reduce of forced RC flow is in cooldown provided-0TSG level does progress.
not decrease while progressing 1
towards required level.
l
[ Rule 3, EFW Control]
i O
'l E0P-09 REV 01 PAGE 15 of 37 NCCD
~
/~)
Applicable carry-over steps:
3.10 Start at least 1 RCP when available...
'~
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 level...
1 Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Circ curve 1 25'F/\\ hr of Figure 1
> 280*F 1 5'F/\\ hr l
280 to 150*F 1 2.5'F/ hr l
Ch LJ i
AV E0P-09 REV 01 PAGE 16 of 37 NCCD
~
3.0 FOLLOW-UP ACTIONS (CONT'D) esb ACTIONS DETAILS M91%
The remainder of this procedure is applicable only if the decision has been made to cooldown using Nat Circ or if RC TEMP cannot be maintained.
3.16 E RC cooldown is o Use TBVs or ADVs to control cooldown
- required, rate.
IEEN establish and maintain cooldown rate o See Table 1 for Nat Circ Cooldown within limits.
Limits.
3.17 Borate the RCS to ensure Refer to OP-103C, Reactivity Worth 2 1% shutdown margin at Curves, Curves 18 and 19.
73*F RC TEMP.
o E 2 or more control rods are stuck, Continue on in this procedure.
IEEH continue boration until any of the following conditions exist:
V Actual baron concentration is 2 1925 ppm DE Actual boron concentration is 2 value determined by the Reactor Engineer or designee.
3.18 Ensure RC cooldown CONCURRENTLY PERFORM SP-422, RC Heatup surveillance is in and Cooldown Surveillance, beginning progress.
with the first step.
3.19 lf cooling down on 1 OTSG, IEEH GO T0 step 3.31 in this procedure.
r^s O
E0P-09 REV 01 PAGE 17 of 37 NCCD
/s Applicable carry-over steps:
I
\\
r 3.10 Start at least 1 RCP when available...
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 level...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Circ curve 1 25'F/ hr of Figure 1
> 280*F 1 5'F/\\ hr 280 to 150*F 1 2.5'F/\\ hr Table 2: Adequate SCM RCS Margin
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig t'N.
< 250 to 70*F
',j 5 150 psig 4
1 150 psig SPDS s 200*F N/A
~s (d
E0P-09 REV 01 PAGE 18 of 37 NCCD
4 n
3.0 FOLLOW-UP ACTIONS (CONT'D) w.
ACTIONS DETAILS O
I l
Indications of steam voiding include an unexpected rise in PZR level without changing primary inventory or cooldown rate. Some head voiding is expected if cooldown rate approaches 25'F/\\ hr.
l 3.20 JE at any time while IE cooldown rate is > 5'F/\\ hr, performing this procedure, M ensure RC PRESS is maintained indication of steam above the Nat Circ Curve.
voiding in the MW
- develops, See Figure 1: Cooldown Curve for Nat M ensure RC cooldown Circ and Forced Flow, rate is maintained within limits.
See Table 1: Nat Circ Cooldown Limits.
3.21 M RC PRESS < 1700 psig, HPI actuation channels pd ANJ adequate SCM exists, M bypass HPI actuation.
ES A ES B Continue on in this procedure.
RC1 RCI RC2 RC2 RC3 RC3 See Table 2: Adequate SCM.
3.22 M RC PRESS is < 900 LPI actuation channels
M bypass LPI actuation, j
RC4 RC4 l
Continue on in this procedure.
RC5 RC5 RC6 RC6 (q
See Table 2: Adequate SCM.
'm.)
E0P-09 REV 01 PAGE 19 of 37 NCCD b
'~g Applicable carry-over steps-
\\' l 3.10 Start at least 1 RCP when available...
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 level...
3.20 If steam voids develop, IBEH control RC PRESS above the Nat Cire curve...
3.21 Bypass HPI actuation at 1700 psig if adequate SCM exists...
1 3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
Table 1: Nat Cire Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Cire curve 1 25'F/) hr of Figure 1
> 280*F 1 5'F/\\ hr 280 to 150'F 1 2.5'F/ hr
/T V
l
/T w)
E0P-09 REV 01 PAGE 20 of 37 NCCD
3.0 FOLLOW-UP ACTIONS (CONT'D) f-w),
ACTIONS DETAILS 3.23 IE EFWPs are operating o If steaming to the condenser, with suction from the CST, IHEN maintain CST level using CD:
IHEN maintain CST level 10 to 31 ft using CD or DW.
1 Ensure CD Hdr PRESS is 1 50 psig.
Continue on in this procedure.
2 Notify available SP0 to ensure hotwell level control is rejecting excess CD to CST.
o If steaming to atmosphere, IEEN maintain CST level using DW:
DW fill to CST is available when WTP-6A or WTP-6B are operating and DWV-346 is open.
I Notify available SP0 to open CDV-112.
n-s-
2 WHEN CST fill from DW is no innger desired, IHEN notify available SP0 to close CDV-112.
4.
E0P-09 REV 01 PAGE 21 of 37 NCCD
}
Applicable carry-over steps:
3.10 Start at least 1 RCP when available...
3.11 Bypass EFIC MSLI and MFLI at 725 to-600 psig OTSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 level...
3.20 IE steam voids develop, IBEH control RC PRESS above the Nat Circ curve...
3.21 Bypass HPI actuation at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
3.23 Maintain CST level 10 to 31 ft using CD or DW...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Circ curve s 25'F/% hr of Figure 1
> 280*F 1 5'F/\\ hr 280 to 150*F s 2.5*F/ hr
/O V
tT C
E0P-09 REV 01 PAGE 22 of 37 NCCD
3.0 FOLLOW-UP ACTIONS (CONT'D)
ACTIONS DETAILS 3.24 IE EFWPs are operating 1
Place both condenser ARPs in with suction from the CST,
" PULL TO LOCK":
AHQ CST level cannot be maintained 2 10 ft, o ARP-1A JEEH break condenser vacuum to prepare the o ARP-18.
hotwell to supply EFWP suction.
2 Open both condenser. vacuum Bkrs:
o ARV-48 o ARV-49, 3.
Close all MSIVs:
MSV-412 MSV-413 MSV-411 MSV-414.
f
(
E0P-09 REV 01 PAGE 23 of 37 NCCD
/'}
Applicable carry-over steps:
3.10 Start at least 1 RCP when available...
3.11 Bypass EFIC MSLI and MFLI at 725 to'600 psig OTSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 le:/el...
3.20 IE steam voids develop, IHfH control RC PRESS above the Nat Circ curve...
3.21 Bypass HPI actuatior, at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuatirn at 900 psig if adequate SCM exists...
3.23 Maintain CST leve7 10 to 31 ft using CD or DW...
3.24 If CST 1evel cannot be maintained, IEEN break vacuum...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PAESS maintained above Nat Circ curve s 25'F/) hr of Figure 1
> 280*F s 5'F/\\ hr 280 to 150*F 1 2.5'F/% hr lh V
g~g
%)
E0P-09 REV 01 PAGE 24 of 37 NCCD
3.0 -
FOLLOW-UP ACTIONS (CONT'D)
O ACTIONS DETAILS CAUTION The condenser must be at atmospheric PRESS before opening EFV-1 or EFV-2.
This is required to maintain NPSH to the EFWPs.
3.25 lE at any time while 1
Notify 'available SP0 to open performing this procedure, EFV-36, hotwell shutoff to EFW, CST level cannot be located between the inlets to C maintained > 5 ft while and D waterboxes.
supplying EFWPs, IHEH establish EFWP 2
Notify available PP0 to unlock suction from hotwell.
and open EFWP suctions from hotwell, located at the EFWPs:
o EFV-1 o EFV-2.
3 WtlEN EFWP suction flow path from hotwell is open per details 1 and 2, IHEN notify available PPO to.
unlock and close EFWP suctions from CST and EFT-2:
o EFV-3 o EFV-4.
l r
E0P-09 REV 01 PAGE 25 of 37 NCCD
o a
u a: *:
Appli' cable ~ carry-over steps:
/~'T 3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
j
\\j 3.12 Maintain EFT-2 level.1'. to 37 ft using CD...-
O 13.13 Swap EFWP suction source to CST at 8.5 ft EFT-2_ level...
3.20 IE steam voids develop, IHEN control RC PRESS above the Nat Circ curve...
3.21. Bypass HPI-actuation at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
3.23 Maintain. CST level 10 to 31 ft using CD or DW...
3.24 IE CST level cannot be maintained, IHEN break vacuum...
3.25 Swap EFWP suction source to hotwell at 5 ft CST level...
Table 1: Nat Circ Cooldown Limits RC Tincore.
Cooldown limit RC PRESS maintained above Nat Cire curve 1 25'F/\\ hr of Figure 1
> 280'F s 5'F/\\ hr i
280 to 150*F s 2.5'F/ hr Table 2: Adequate SCM RCS Margin
> 1500 psig 30*F O
i 1500 to 50*F
> 250 psig' 1 250 to 70*F
> 150 psig i 150 psig SPDS 1 200'F N/A i
t t
'l E0P-09 REV 01 PAGE 26 of 37 NCCD t
3.0 FOLLOW-UP ACTIONS (CONT'D1
(,)
ACTIONS DETAILS 3.26 MHfH RC PRESS is < 700 See Table 2: Adequate SCM.
- psig, AND adequate SCM exists, 1
Notify available PP0 to unlock IBEN isolate CFTs.
and close Bkrs for CFT isolation valves at ES MCC 3AB:
o CFV-5 unit 6B o CFV-6 unit 6C.
2 Close CFT isolation valves:
o CFV-5 o CFV-6.
3.27 HBf8 RC PRESS is S40 to Ensure RCV-10 switch in "NNI CAB #3" 500 psig, is selected to the " LOW" position.
1H18 ensure PORV is selected to the low TEMP
(h overpressure protection
's s' mode.
3.28 Continue cooldown and CONCURRENTLY PERFORM OP-404, Decay depressurization to Heat Removal System, Section 4.5.
establish DH system s
operation.
/
\\,)
E0P-09 REV 01 PAGE 27 of 37 NCCD l
q
~
' Table 1:-Nat Circ Cooldown Limits
/
RC Tincore Cooldown limit RC PRESS. maintained.
above Nat Circ curve.
I 25'F/% hr of Figure 1
> 280*F 1 5'F/% hr-280 to 150*F 1 2.5'F/% hr O
o
'N E0P-09 REV 01 PAGE 28 of 37 NCCD E
1
+
3.0 FOLLOW-UP ACTIONS (CONT'D)
ACTIONS DETAILS i3.29 WBj]f DH system is
- 1. Ensure the following valves aro providing core cooling, closed:
JJim stop OTSG cooling.
Valves to close when on DHR Valve A OTSG B OTSG MBV FWV-30 FWV-29 LLBV FWV-31 FWV-32 SUCV-FWV-40 FWV-39 MS to EFP-2
'MSV-55 MSV-56 MS to TBVs
-MSV-53 -MSV-54 and MFWPS EFW Block
-EFV-11 -EFV-32 Valves EFV-14 EFV-33 O-2 Stop.MFWPs:
o FWP-2A o FWP-28.
t 3
Stop MFWBPs:
o FWP-1A o FWP-1B.
4 _ Stop EFWPs:
l o EFP-1 o EFP-2.
3.30 Exit this procedure.
The TSC will provide any necessary guidance from this point.
O E0P-09 REV 01 PAGE 29 of 37 NCCD l
4
. App 1fcable carry-over steps:
< ~N, 3.10 Start at least 1 RCP when available...
(
)
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2~1evel...
3.20 E steam voids develop, IllEH control RC PRESS above the Nat Circ curve...
3.21 Bypass HPI actuation at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
3.23 Maintain CST level 10 to 31 ft using DW...
3.24 E CST level cannot be maintained, IliEE break vacuum...
3.25 Swap EFWP suction source to hotwell at 5 ft CST level...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Circ curve 125'F/\\ hr of Figure 1
> 280*F 15'F/\\ hr 280 to 150*F s 2.5'F/\\ hr Table 3: 0TSG Tube to Shell AT Limits
(')
Tensile AT Limit (Avg Tshell - Icold) 1 100'F
%)
Compressive AT Limit (Thot - Avg Tshell) 1 60*F A OTSG shell Temps A730 A731 A732 A733 A734 Avg R771 B OTSG shell Temps A735 A736 A737 A738 A739 Avg R772 E0P-09 REV 01 PAGE 30 of 37 NCCD
m e
3.0 FOLLOW-UP-ACTIONS (CONT'D)
(3 L)
ACTIONS DETAILS Status o
RCPs are not available,-
o Adequate SCM exists, o
Cooldown is on 1 OTSG.
3.31 Maintain tube to shell AT I
Determine tube to shell AT:
within limits.
H OTSG is depressurized, IH S determine tube to shell AT per Table 3.
E OTSG is pressurized, Ijid calculate tube to shell AI as follows:
o Tensile limit is 100*F (OTSG shell TEMP - OTSG_Tsat) tubes-colder than shell p
o Compressive limit is 60*F
( J --
(OTSG Tsat - OTSG shell TEMP) tubes hotter t.han shell.
2 Maintain tube'to shell AT within limits:
o E tensile limit is approached, JE M decrease RC cooldown rate o E compressive limit is approached, JE M increase cooldown rate without exceeding cooldown rate limits.
I See Table 1: Nat Circ Cooldown Limits.
I E0P-09 REV 01 PAGE 31 of 37 NCCD
r I
i
. Applicable carry-over steps:
[")
3.10 Start at least 1 RCP when available...
\\/
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig 0TSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2 level...
3.20 E steam voids develop, IM control RC PRESS above the Nat Circ curve...
3.21 Bypass HPI actuation at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
3.23 Maintain CST level 10 to 31 ft using DW...
3.24 E CST level cannot be maintained, JEEN break vacuum...
3.25 Swap EFWP suction source to hotwell at 5 ft CST level...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Cire curve 1 25'F/\\ br of Figure 1
> 280*F s 5'F/ hr 280 to 150*F 1 2.5*F/\\ hr Table 2: Adequate SCM f)
RCS Margin
> 1500 psig 30*F 1 1500 to 50*F
> 250 psig 1 250 to 70*F
> 150 psig 1 150 psig SPDS s 200*F N/A Table 3: 0TSG Tube to Shell AT Limits Tensile AT Limit (Avg Tshell - Icold) s 100*F Compressive AT Limit (That - Avg Tinell) 5 60*F A OTSG shell Temps A730 A731 A732 A733 A734 Avg R771 B OTSG shell Temps A735 A736 A737 A738 A739 Avg R772 LJ E0P-09 REV 01 PAGE 32 of 37 NCCD
- z...
F0LLOW-UP ACTIONS (CONT'D)
_3.0 p-::
. N- /
ACTIONS QETAILS 3.32 Control plant cooldown and o IE OTSG is isolated due to SGTR, RC PRESS to maintain idle IHEN decrease or stop cooldown and loop Thot adequately depressurization to maintain idle subcooled, loop TNa adequately subcooled.
o IE OTSG is isolated Cae to a steam or feedwater leak in the RB, IHfH decrease or stop cooldown and depressurization to maintain idle loop TNa adequately subcooled.
o IE OTSG is isolated due to a steam or feedwater leak NOT in the RB, IHEN notify the TSC to consider feeding the affected OTSG to maintain SCM and promote Nat Circ.
/O V
e E0P-09 REV 01 PAGE 33 of 37 NCCD
Applicable carry-over steps:
4 L '^
3.10 Start at least 1 RCP when available...
3.11 Bypass EFIC MSLI and MFLI at 725 to 600 psig OTSG PRESS...
3.12 Maintain EFT-2 level 10 to 37 ft using CD...
3.13 Swap EFWP suction source to CST at 8.5 ft EFT-2~1evel...
3.20 E steam voids develop, E control RC PRESS above the Nat Cire curve...
3.21 Bypass HPI actuation at 1700 psig if adequate SCM exists...
3.22 Bypass LPI actuation at 900 psig if adequate SCM exists...
3.23 Maintain CST level 10 to 31 ft using DW...
3.24 E CST level cannot be maintained, M break vacuum...
3.25 Swap EFWP suction source to hotwell at 5 ft CST level...
Table 1: Nat Circ Cooldown Limits RC Tincore Cooldown limit RC PRESS maintained above Nat Cire curve 1 25'F/% hr of Figure 1
> 280*F 1 5'F/\\ hr 280 to 150*F 1 2.5'F/\\ hr Table 2: Adequate SCM f
RCS Margin
> 1500 psig 30*F i 1500 to 50*F
> 250 psig 1257 to 70*F
> 150 psig s 150 psig SPDS 1 200*F N/A Table 3: 0TSG Tube to Shell AT Limits Tensile AT Limit (Avg Tshell - Icold) i 100*F Compressive AT Limit (Thot - Avg Tshe11) 1 60*F A OTSG shell Temps A730 A731 A732 A733 A734 Avg R771 B OTSG shell Temps A735 A736 A737 A738 A739 Avg R772 gLJ E0P-09 REV 01 PAGE 34 of 37 NCCD
e
- .l 3.0 FOLLOW-UP ACTIONS (CONT'D)
~s 1
)
ACTIONS DETAILS l
3.33 IE an RC hot leg void Minimize the void by performing the
- develops, following:
181H minimize the void to ensure RC PRESS control 1
Stabilize RC TEMP.
during Nat Circ cooldown.
2 Raise RC PRESS to maintain an increased SCM.
3 Maintain RC TEMP and PRESS stable while observing PZR level trend decreases to normal.
IE PZR PRESS control has NOT been re-established, IHEH perform the following:
1 Establish stable or slightly increasing RC PRESS using MV or HPI flow.
2 Energize and open affected loop HPVs:
.-w3 HPVs A HOT LEG B HOT LEG DPDP-5A DPDP-5B switch 1 switch 1 RCV-157 RCV-163 RCV-158 RCV-164 3
WHEN idle loop That decreases to saturation, THEN close the HPVs.
3.34 GO T0 step 3.20 in this procedure.
i p.,
A
./
E0P-09 REV 01 PAGE 35 of 37 NCCD i
i
4 6
4 4
O BLANK PAGE qLJ 1
O E0P-09 REV 01 PAGE 36 of 37 NCCD
=
.- -- n
F figure 1:
Cooldown Curve for Nat Circ and Forced Flow
(
)
2600 I
I
' NOhMAdPOST TRIP WINDOW i
2400 l
k
-i L
l l
2200
.f 4...
NDT CURVE 2000
+-----,-.-.;.~-
7 --
ASCM i
i l CURVE 1800
$ 1600
..?--
..1-
-+.-
E o,
,NATURAlj v 1400
._7..
.+-
CIRCULATIONr
+-
0 i
, CURVE ;
1 i.
w S 1200 1 -....
. I
.{.-
a 0
i I
61 1000 i
r...
(~~)
(/)
i k'
O 800
_i-.
[
I l
600 L
.+--..w-
-l---.
-+-
l SATURATION !
l l
l CURVE,
400
~
200
, - - +
100 200 300 400 500 600 700 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
<m o
Above and to the left of the Nat Circ curve if RCPs are off and
(
)
cooldown rate 2 5 F/\\hr s-E0P-09 REV 01 PAGE 37 of 37 (LAST PAGE)
NCCD