ML19324C262
| ML19324C262 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/27/1989 |
| From: | FLORIDA POWER CORP. |
| To: | |
| References | |
| PROC-891027, NUDOCS 8911160035 | |
| Download: ML19324C262 (89) | |
Text
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..a i DOCUMENT TRANSMITTAL FORM 18532
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FOR. DOCUMENTS TRANSMITTED TO DC DESK (NRC)* DATE: 30 OCT 1989
. BATCH: 180 DOCUMENT NUMBER SHEET NUMBER REVISION NUMBER COPY NUMBER AP 380 13 7 EP 290 10 25 INSTRUCTIONS TO THE ADDRESSEE COMPLETE EACH OF THE INSTRUCTIONS BELOW WHICH ARE MARKED WITH AN " X" l (1) VERIFY THE DOCUMENTS RECEIVED AGREE WITH THE ADOVE DESCRIPTION (2) INCORPORATE THE TR ANSMITTED DOCUMENTS INTO YOUR FILES (3) DESTROY DOCUMENTS OR PORTIONS OF DOCUMENTS SUPERSEDED BY THE ABOVE i' (4) SIGN AND DATE IN THE SPACES DELOW INDICATING THAT YOU COMPLETED THESE I NSTRUCT I ONS.
(5) SIGN BELOW INDICATING THAT YOU HAVE READ AND UNDERSTOOD THE CHANGES AS IDENTIFIED i _)(, 6 () RETURN TO DOCUMENT CONTROL, CRYSTAL RIVER UNIT 3, MAC# NA1C___ NREA2( FLA. P OWER CORP., P. O. BOX 219 CRYSTAL RIVER FLA. 32629 i i SIGNATURE OF ADDRESSEE DATE L INDEPENDENT VERIFICATION DATE (OP S) 1 i EI C
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ENGINEERED SAFEGUARDS ACTUATION h- , 1.0 ENTRY CONDITIONS . p JE ABY of the following conditions exist: o Manual ES Actuation, f o RCS PRESS is < 1500 psig, rM o RB PRESS is > 4 psig, 1 IH_EE use this procedure. Docum O NI- L f
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l. l l 1 j l This Procedure Addresses Safety Related Components j J Approved by NOS 412 O N b r Date /o -t.7 f'~'} _41
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AP-380 PAGE 1 of 55 ESA
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(_/ , 2.1 Ensure ES status lights are blue for the actuated systems. c ********************************************************************* CAUTION
! IE RCPs have HQI been stopped within 2 min from the time that adequate subcooling margin was lost, JJiEti RCPs must remain running to prevent core damage.
e********************************************************************** 2.2 Verify adequate subcooling Adequate Subcooling Margin
- t. margin.
RCS PRESS MARGIN JE adequate subcooling margin does 1101 exist, > 1500 psig 2 20'F IllEti stop all RCPs. s 1500 psig 2 50*F A l' L I : I i 1 f V AP-380 REV 13 PAGE 3 of 55 ESA l
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[. .l * $. ,. ' * [ - '* , 3.0' FOLLOW-UP ACTIONS L .*: t. [fe's
,, ; t r
1 ACTIONS DETAILS . vi
'3.'l' Notify .SOTA of plant conditions.
3.2 CONCURRENTLY PERFORM VP-Sco, Plant Safety
, Verification Proct. dure, beginning with Step 1.1.
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1 e e v AP-380 REV 13 PAGE 5 of 55 ESA l >
, , , . . . . _ . . _ . , _ . . . _ _ _ . . _ _. . . ~ . . . __ _
n:
.. E
' Table 1: Adequate Subcooling Margin
. . RCS PRESS ' MARGIN f~.
_/ > 1500 psig 2 20'F ,
,' s 1500 psig . 1 50*F my s --
l: f 1' l-1 l. j- . 3 l> q k e L l l
. . . . . ~ . . _ . _ _ _ . - - . . .. .._.,..__ _ _.. .__. , . . . . . . . _ . . _ _ - . . _ . . _ . . . _ . _ . . - . . . . _ . _ .
1' i .
'- 3.0 -FOLLOW-UP ACTION $'(CONT'D) 4'~~N ACTIONS DETAILS -
o i e********************************************************************** - CAUTION
~1E RCPs have HQI been stopped within 2 min from the time that $
adequate subcooling margin was lost, IHEN RCPs must remain running tu prevent core damage. - c********************************************************************** 3.3 IE, at any time while See Table 1 for adequate performing this procedure, subcooling margins.
-adequate subcooling margin -
does HQI exist, . . IHEN: Stop all RCPs, . Stop all RCPs and ensure Oil Lift pumps start. . Raise OTSG levels to Raise OTSG level to 95%i . 95% using EFW, .
- 1. Ensure both EFW trains are actuated.
- 2. Depress "95%" level select pushbuttons on OTSG
(~'T A and B.
%,,) ..
Start full HPI. Start full HPI:
- 1. Open MVP suction valves from BWST:
. o MVV-58 o MUV-73,
- 2. Ensure 1 2 MUPs and their cooling water pumps are operating.
- 3. 0 pen all 4 HPI valves: ,
MUV-23 MVV-24 MUV-25 MUV-26.
) AP-380 REV 13 PAGE 7 of 55 ESA 7 ,p.-. ..-,4,...,-..,p., -
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f _, 3 Table'1: Adequate Subcooling Margin ; RCS PRESS MARGIN k.) > 1500 psig 2 P.0* F ,
- 5. 1500 psig 1 50'F 3.3 'IE adequate subcooling margin does HQI exist, ItiEti:
( o Within 2 min, stop all RCPs, o Raise OTSG 1evels to 95% using EFW, o Start full HPI.
-1 f] '% ) --
I l l l 1- . () REV 13 PAGE 8 of 55 ESA
'(/ AP-380 . .
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3.0 FOLLOW-UP ACTIONS (CONT'D1 3. O/ ACTIONS DETAILS 3.4 H. adequate subcooling margin does HQI exist, j M(Q ull RCPs have HQI been stopped within 2 min, ' i IB M reduce operating RCPs to 1/ loop. lE, at any time while
-3.5 performing this procedure, ,
incores indicate super- ' heated conditions, It[G GO TO EP 290, Inadequate Core Cooling, beginning with Step 2.1. e**************************************************(**** ************** CAUTIDE , i Maximum HPI- flow should be maintained .< 540 gpm/ pump, to prevent HPI pump runout and possible pump damage. :
-c************************************************************4********
s********************************************************************** CAUTION , Balancing of HPI flows could lead to ICC during certain SBLOCA scenarios. Therefore HPI flow balancing should not
.be pe'rformed. HPI throttling criteria remain in effect.
i 3.6 1[, at anytime while 1. Select the following to performing this procedure, " BYPASS" on both A and B HPI actuation is present, HPI channels. IBM determine LPI pump requirements. "HPI RCl",
"HPI RC2",
"HPl RC3".
- 2. 1E R0S PRESS is > 500 psig .:
ItiB stop both DHPs. . AP-380 REV 13 PAGE 9 of 55 ESA - - -
\
]
J* , Table 1: Adequate Subcooling Margin ] RCS PRESS MARGIN j
,n.1 .
(w ). > 1500 psig- 1 20'F ,
$ 1500 psig 2 50*F h
3.3 1 adequate subcooling margin does HQI exist, R :' ' o Within 2 min, stop all RCPs, l o Raise OTSG 1evels to 95% using EFW, o Start full HPI. , 3.5 If incores indicate superheated conditions, 11[EN GO TO EP-290,-Inadequate Core Cnoling, beginning with Step 2.1. 5 t i l l 4 L l [ . 1' L . L .. l I: 1 r ( AP-380 REV 13 PAGE 10 of 55 ESA l l l.
4 3.0 FOLLOW-UP ACTIONS (CONT'D)
'gg
&CIIONS DETAILS
( ). , 3.7 IE, at anytime while performing 1. Reset LPI bistables: this procedur4, LPI actuation - is present, RC4 in ACT, CHAN. CAB #1 *
&M) RCS pressure is > 500 PSIG RC5 in ACT. CHAN, CAB #2
Jil](: RC6 in ACT, CHAN. CAB #3 Stop both LPI pumps. 2. If HPI actuation is present, IHEN select the following to Go to step 3.8 of this procedure. " BYPASS" on both A and B HPI channels: ,
"HPI RC1" "HPI RC2" "HPI RC3" l 3. STOP DHP-1A and DHP-1B 3.7.1 if, at anytime while performing o Ensure DHV-110 and this procedure LPI actuation DHV-lll are operating is present, AND RCS pressure properly, is ( 500 PSIG 8MQ LPI flow is > 300 GPM / pump o Refer to OP-404 for DHP
(} IHfH: run time limits ,
\, /
Ensure proper operation o Select the following to
" BYPASS" on both A and B Bypass LPI actuation channels:"
LPI RC4" Go to step 3.8 of this procedure. " LPI RC5" ((["LPIRC6" l l l l l 1 l l
'T -
' ('d AP-380 REV 13 PAGE 11 of 55 ESA ..
- -- , , , - , - , , , , , - . . , - - - . . - - - , - - - - , . , .-- n , - - , , , . . - - --
7 l'~ :$! ' ' , f Table 1: Adequate Subcooling Margin RCS PRESS MARGIN ,
' I
~~'s
,E( _,/ > 1500 psig 2 20*F 5 1500 psig 2 50'F i ,
-3.3 ;f adequate subcooling margin does HQI exist,
. B18:
o Within 2 min, stop all RCPs, o Raise OTSG levels to 95% using EFW, I o Start full HPI. 3.5 IE incores indicate superheated conditions, , .,
- IBEH GO TO EP-290, Inadequate Core Cooling, beginning with Step 2.1.
( h 9 9
$ 4 l
s-4 () AP-380 I REV 13 PAGE 12 of 55 ESA e
- - - - +- t % g . . - , --- , , ,. - --, ,. - , -
3.0 FOLLOW.UP ACTIONS (CONT'D) a ! r~'s ACTIONS DETAILS - t i v - , 3.7.2 Jf, at anytime while performing o Select the following to ' this procedure, LPI actuation " BYPASS" on both A and B is present AND RCS pressure channels: is < 500 PSIG ANQ LPI flow "LPI RC4" - is < 300 GPM / pump "LPI RC5" M: "LPI RC6" Bypass LPI actuations o To increase LPI flow, Perform the following Increase LPI flow steps in order: 1 Ensure DHV-Il0 and Dt'V-111 are open. IE LPI flow is
>300 GPM M GO T0 step 3.8 2 Open the PORV o RCV-10 lE LPI flow is
>300 GPM M GO T0 step 3.8 r8 i 3 Perform. step 3.31
;d of this procedure, -
HPI suction from LPI. THEN RETURN T0 this step. Jf__ LPI flow is ,
>300 GPM M GO T0 step 3.8 4 Open the High Point vents.
PZR vents: o RCV-159 - o RCV 160 Hot Leg vents: o RCV-157 - o RVC-158 o RCV-163 = 0 RCV-164 . GO T0 step 3.8 O. l ( ,/ AP-380 REV 13 PAGE 13 of 55 ESA W
.G J Table 1: Adequate Subcooling Margin RCS PRESS MARGIN
.! p _,\_ f .
(_,)- > 1500 psig 2 20'F , j s 1500 psig 1 50'F 3.3 ;f adequate subcooling margin does HQI exist, ' lES: I o Within 2 min, stop all RCPs, o Raise OTSG 1evels to 95% using EFW, , o Start full HPI. 3.5 If incores indicate superheated conditions,. IHEN GO TO EP 290, Inadequate Core Cooling,
-beginning with Step 2.1.
2%
\ - ) .
e e Ja s' j-sg _ (_,) AP-380 REV 13 PAGE 14 of 55 ESA
- - - - - . . r e.- , _ - .. .- -
p_ _ , I (li
+ 1 '. 0 FULLOW-UP ACTIONS (CONT'D) , -) ACTIONS DETAILS -LJ _
3.8 IE RB isolation actuation Select the following to is-) resent, " BYPASS" on both A and B RBI IHEi ensure all RB channels. 1 solation status lights are blue, "RB ISO RB1", ,
&HQ bypass RB isolation.
"RB 150 RB2",
"RB' ISO RB3".
H918 High RB TEMPS may cause level instrumentation inside the RB to read - high, for example, with localized TEMPS of 350*F, level may read 10% higher than i actual. 3.9 IE RB Spray actuation Ensure BSV-3 and BSV 4 are is present, regulating flow at 1H1H ensure proper flow. 1500 to 1600 gpm. IE either BSP does NOT Close on affected pump: start, (,_.' IHiH close discharge valve o BSV-3 L on affected pump. o BSV-4. , 9 L e
,..n... , - , -- - ,,, , . -,.,.... ,.-...-,,,n. -
F '
)
(- . i [ .. I p , Table 1: Adequate Subcooling Margin [ Js RCS PRESS l MARGIN-I _)
- > 1500 psig 2 20'F . ;
s 1500 psig. 2 50'F ;
~
3.3 ;f.adequatesubcoolingmargindoesHQIexist,
.lEN: '- o Within 2 min, stop all RCPs, o Raise OTSG levels to 95% using EFW, F i o Start full HPI. ;
7 3.5 IE incores indicate superheated conditions, IHLH GO TO EP-290, Inadequate Core Cooling, beginning with Step 2.1. e I f $.
\-) -
8
.i; .
j g l~ \ l a l 5 3 1 t l' .["'%. 4 (- l' AP-380 REV 13 PAGE 16 of 55 ESA _m L l'
g c -- . L,9_FDLLOW-UP ACTIONS (CONT'D) l t.
'~'y ACTIONS DETAILS ,
d . , . . . , . . , .
tioit
., . . E loss of subcoolir.g was due to an overcooling event, BEli OTSG PRESS control should be regained prior to raising OTSG 1evel. -
y 3.10 E ES actuation-is due to Observe for: an overcooling event,
.Ilim determine cause, o Low OTSG PRESS, at(Q stop overcooling. ;
o High OTSG level, i o High MFW or EFW flow. o SPOS trace indicating overcooling. ,; 3.11 Isolate possible sources 1. Isolate the following: of low RCS PRESS. o IE the PORV is 1[QI required to be opened, 3 3 close RCV-ll, (q , PORV block. , o Close the following ' letdown coolers inlet valves: ,
, . i NUV-38, i
MVV-39, MUV-498. 1 o Close RCV-13, PZ3 spray I block valve. . o Ensure DHV-3 is closed.
- 2. Reopen RCV-Il while '
observing RCS PRESS.
e i '. . , 1
*- Table 1: Adequate Subcooling Margin
, RCS PRESS' MARGIN zm. t 3 7q ). > 1500 psig 2 20*F 1 1500 psig 2 50*F l -
3.3 1E adequate subcooling margin does HQI exist, . . IllEN: o Within 2 min, stop all RCPs, o Raise OTSu levels to 95% using EFW, o Start full HPI. 3.5 If incores indicate superheated conditions, IBEM GO TO EP-290 Inadequate Core Cooling, beginning with Step 2.1. Table 2: Required 0TSG Levels Condition Level I (
Inadequate subcooling margin 9E%
No RCPs 65% and adequate subcooling margin , RCPs Low Level and adequate subcooling margin Limits o
,,- ~ ,
(_,/ AP-300 REV 13 PAGE 18 of 55 ESA
.n
- l 6
a,p' w -, s E* 2 3.0 FOLLOW-UP ACTIONS (CONT'D) i ACTIONS DETAILS k ; r;*********************************************************************** ) A-' CAUTION - 2 adequate subcooling margin does E exist, ' utt) incore TEMPS are increasing,
" M ( EFW should be maintained > 125 gpm/0TSG until 95%
evel is reached, to ensure adequate OTSG heat removal. , , , C*********************************************************************** 3.12 Ensure EFW is actuated See Table 2 for required 0TSG - and selected to required levels. OTSG setpoint.
, E EFW and MFW are E available, M GO TO Step 3.41 in Begin HPI/PORV cooling.
this procedure. E EFW is E available, M ' CONCURRENTLY PERFORM AP-450, EFW Actuation, , beginning with Step 3.9. ' t
'3.13 E CFTs have emptied, n, M GO TO Step 3.30 ,
%./
). in this procedure.
3.14 E , at any time while 1. Ensure RCV-II,'PORV performing this procedure, block, is open. RCS: PRESS is > 2300 psig, M open the PORV to 2. Select PORV to "0 PEN". lower RCS PRESS to = 100 psig above OTSG PRESS. 3. M RCS PRESS is above
= 100 psig > OTSG PRESS.
E select PORV to ;
"CLOSE".
l 4. Verify PORV closed using , ultrasonic indicators. l E PORV does NOT close, ' M close RCV-II, PORV Block Valve. 1 E PORV is E available, o PZR vents: .: M .use PZR vents to lower ,1 l RCS PRESS. o RCV-159 o RCV-160. ! l i l AP-380 REV 13 PAGE 19 of 55 ESA l i l l'
n.: lY , [ Table 1: Adequate Subcooling Margin
$s. RCS PRESS MARGIN '
.( V d > 1500 psig 2 20*F _
s 1500 psig 2 50'F s s H 3.3 J equate subcooling margin does RQI exist, o Within 2 min, stop all RCPs, o Raise OTSG levels to 95% using EFW, o Start full HPI. i L 3.5 IE incores indicate superheated conditions, , Id3 GO TO EP-290, Inadequate Core Cooling,
-beginning with Step 2.1.
Table 2: Required 0TSG Levels .
- p. Condition Level l ? '~ ' Inadequate subcooling margin 95%
l No RCPs 65% and. adequate subcooling margin f , RCPs Low Level ' and adequate subcooling margin Limits ; 3.14 1E RCS PRESS is > 2300 psig, IHB open the PORV and lower RCS PRESS to = 100 psig above OTSG PRESS. ,, l; l 0. c l 4-f N.- AP-380 REV 13 PAGE 20 of 55 ESA , 1 i
3.0 FOLLOW-UP ACTIONS (CONT'D) ACTIONS DETAILS ('~
\~-}) .
ce********************************************************************* CAUTION hPI flows must not be throttled to < 100 gpm/ pump with MVP recirc . valves closed, to prevent pump damage, c ************************ ******************************************* l 3.15 IE HPI throttle requirements o Open MVP recirc valves: are met,
". HEN open MVP recires, o MUV-53 o MUV 257.
SN) throttle HPI as required. o HPI throttle requirements: o HPI must be throttled to maintain subcooling ! margin < 100*F wten no RCPs are operating. l o if adequate subcooling ! exists based on incores, : IllB HPl must be throt-
- tied to maintain RCS es PRESS and TEMP below the !
i NDT curve, see SPDS or :'
\s) Enclosure 2. -
o HFI must be throttled I to maintain HPI flow
< 540 gpm/ pump.
o HPI should be throttled to i maintain PZR level 80" to i 220" WHEN adequate sub- , cooling margin exists based on incores o HPl may be throttled when adequate : subcooling margin . exists based on incores. - i .: e 1 1 i () AP-380 REV 13 PAGE 21 of 55 ESA l l .
(_
, o o j c Table 1: Adequate Subcooling Margin r - RCS PRESS MARGIN ,
( ') ' > 1500 psig 2 20'F l s - i s 1500 psig 2 50'F ) l 3.3 J equate subcooling margin does HQI exist, o Within 2 min, stop all RCPs, i o Raise OTSG 1evels to 95% using EFW, o Start full HPt. l l
\
3.5 IE incores indicate superheated conditions. IHEN GO TO EP 290, Inadequate Core Cooling, beginning with Step 2.1. [ L 3.14 lE RCS PRESS is > 2300 psig, ItifB open the PORY and lower RCS PRESS to = 100 psig above ! OTSG PRESS. , l (v) .. 3.15 IE HPI throttle requirements are met, liffH open MVP recircs, - AND throttle HPI flows as required. [ o HPI must be throttled to maintain subcooling margin i 1 100'F when no RCPs are operating. j s , ,' o if adequate subcooling margin exists based on incores i Itl[H HPI must be throttled.to maintain RCS PRESS and TEMP below NDT curve. o HPI must be throttled to maintain HPl. flow < 540 gpm/ pump. : l o HPI should be throttled to maintain PZR level 80" to , 220" W!!E8 adequate subcooling margin exists based on incores. o HPI may be throttled when adequate subcooling margin , exists based on incores. ( - AP 380 REV 13 PAGE 22 of 55 ESA
r 1
.. i 3.0 FOLLOW UP ACTIONS (CONT'D) i s ACTIONS DETAILS ; 'O , i 3.16 (HG either OTSG PRESS is Depress "< 725 PSI OTSG PRESS !
setween 725 and 600 psig. EFIC ACT BYPASS" pushbuttons: : lb,JF bypass EFIC MS and MFW isolation actuations. __ Channel A Channel B > Continue on in this Channel C Channel D. procedure.
- t RQ12 i Subc uling margin should be closely observed after starting each RCP.
f 3.17 H , at any time while o RCPs are available when all ' performing this procedure, the following exist: RCPs are available, ; l AND ll OTSG is available, o RCP start permissives ItEN start 1 RCP in each are met, f loop. QB 2 RCPs in I loop o RCS PRESS and TEMP
. are above RCP NPSH E RCP3 are available, curves, see SPOS or AND OTSGs are HQI available, Enclosure 1,
[- IBM start 1 RCP. o Adequate subcooling , margin, see Table 1. o OTSGs are available when 111 the following exist: . o EFW or MFW available, , o TBVs or ADVs available, , o OTSG integrity, o Establish RCP-1B operating for maximum PZR spray. [ i l l AP 380 REV 13 PAGE 23 of 55 ESA 1 l
F ! o 3.3 4 equate subcooling margin does El exist, o Within 2 min, stop all RCPs,
' (v) .
o Raise OTSG 1evels to 95% using EfW, l o Start full HPl. f i 3.5 incores indicate superheated conditions,
;f[G
. .t GO TO EP-290, Inadequate Core Cooling, t beginning with Step 2.1. !
i 3.14 ;fRCSPRESSis>2300psig. (
; .110 open the PORV and lower RCS PRESS to = 100 psig above OTSG PRESS.
j l 3,15 l HPI throttle requirements are met, ' 31G open MVP recires, - l 8@ throttle HP! flows as required, o HPI must be throttled to maintain subcooling margin 5 100*F when no RCPs are operating , ()' V o IE adequate subcooling margin exists based on incores HP1 must be throttled to maintain RCS PRESS and TEMP i e ow NDT curve. . o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. t o HPI should be' throttled to maintain PZR level 80" to i 220" Mt!Q adequate subcooling margin exists based on ; incores. o HP1 may be throttled when adequate subcooling margin , exists based on inceres. i 3.18 IE RCPs are available,
- 6@ OTSGs are available.
l Itim start 1 RCP in each loop. If RCPs are available, . As OTSGs are @I available, , It!B start 1 RCP. l l AP-380 REV 13 PAGE 24 of 55 ESA l l
c , o e- L,Q FOLLOW-UP ACTIONS fCONT'D) ACTIONS DETAILS U .18 3 1[ at any time while Nat Cire is desired when All of - l performing this procedure, the following conditions exist
- adequate subcooling margin !
is established, o RCPs are tiQI available, ' Nat Cire is desired, Alf)j Iti CONCURRENTLY PERFORM c 2101SG is available. AP 530 Nat Circ, , beginning at Step 3.5. : 3,19 Establish and maintain OTSG Lower OTSG PRESS using TBVs or ' Tsat 40 to 60'F below ADVs. incore TEMP untti OTSG s' heat removal is established. 3.20 If adequate subcoaling RCPs should be bumped when all i margin does 1fQ1 exist, of the following conditions . ANQ RCS cooldown rate exist: ! is < desired, . IliG determine if RCPs o RCS cooldown rate is ! should be bumped. < desired, o RCP power is available. o All RCP start permissives are ! met. r r [ l ( AP-380 REV 13 PAGE 25 of 55 ESA i
o 3.3 ;f adequate subcooling margin does HQI exist,
.EN: .
r (' o Within 2 min, stop all RCPs, - o Raise OTSG levels to 95% using EFW, o Start full HPl. i 3.5 'f incores indicate superheated conditions, , E H GO TO EP 290, Inadequate Core Cooling, ; beginning with Step 2.1. ! t 3.14 E RCS PRESS is > 2300 psig, , IE N o>en the PORV and lower RCS PRESS to = 100 psig above ! OTSG PRESS. i t 3.15 E HPl throttle requirements are met, I E N open MVP recircs, ANQ throttle HPI flows as required. } o HPI must be throttled to maintain subcooling margin [ s 100'F when no RCPs are operating. ; o ;I adequate subcooling margin exists based on incoros -[ '
. M' HPI must be throttled to maintain RCS PRESS and TEMP below NOT curve. !
o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. . t o HPI should be throttled to maintain PZR level 80" to 220" WEB adequate subcooling margin exists based on incores. ,
. o HP1 may be throttled when adequate subcooling margin f exists based on incores, j 3.18 E RCPs are available, i SNQ OTSGs are available, j IEH start 1 RCP in each loop. J E I: cps are available, .I AND OTSGs are HQI available, ,!
IEN start 1 RCP. - i t AP 380 REV 13 PAGE 26 of 55 ESA
r a 140 F0l LOW UP. ACTIONS (CONT'D1
, ~3 ACTIONS DETAILS ! ? I l \ ,i
- lhLll!
HPI flow may affect the indications of Nat Circ. li911t .f Subcooling margin should be closely observed after each RCP bump. 3.21 .I RCPs should be bumped, o To bump a RCP, start it,
; M bump RCPs at 15 min wait for current to drop off intervals and observe for to normal, then stop it.
saturated Nat Cire after each bump. o First RCP bump should be in the loop with the highest OTSG level. o Balance the bumps between .l available RCPs. o Record the times of the RCP bumps.
,9 . \, ..
o Indications of saturated Nat Cire are: ' o Tc Tsat of OTSG, o Tc and incores lower when OTSG PRESS is lowered.
*l S.
() AP 380 REV 13 PAGE 27 of 55 ESA
~
r , 3.3 equate subcooling margin does HQI exist,
,) o Within 2 min, stop all RCPs, ,
i o Raise OTSG levels to 95% using EFW, ! o Start full HPl. i 3.5 ;I incores indicate superheated conditions, r "ti GO TO EP 290, inadequate Core Cooling, be[Nginning with Step 2.1. l 3.14 ;IRCSPRESSis>2300psig,
.3EN o>en the PORY and lower RCS PRESS to = 100 psig above ;
OTSG PlESS. . N 3.15' 1[ HPI throttle requirements are met, i Itf[H open MVP recircs, :' AND throttle HPI flows as required. o HP1 must be throttled to maintain subcooling margin 1 100'F when no RCPs are operating. 1
,^)
'v "i o , adequate subcooling margin exists based on incores '
HPI must be throttled to maintain RCS PRESS and TEMP ow NDT curve, j o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. . I o HPI should be throttled to maintain PZR level 80" to 220" Wii[N adequate subcooling margin exists based on l 3 inceres. , o HPI may be throttled when adequate subcooling margin exists based on incores. 3.17 IE RCPs are available, , AND OTSGs are available, Iti[N start 1 RCP in each loop. , lE RCPs are available. AND OTSGs are 1101 available, . 111[N start 1 PCP. } [ [ + umme < , ( AP-380 REV 13 PAGE 28 of 55 ESA l ,, i L
I l. p LdL FOLLOW-UP ACTIONS (CO M (' . 1 ACIMN,1 DETAILS ( / 3.22 If OTSG heat removal is 1. Ensure PORV is closed. established. 1110 ensure PORY 2. Verify PORV closed using is closed, ultras >nic flow ANQ ensure PZR vents indication, are closed. -
- 3. Ensure PZR vents are closed o RCV 159 o RCV-160.
l 3.23 11 RCS cooldown can be RCS Cooldown Rate Limits, controlled, s Ili@ maintain RCS cooldown RCS TEMP LIMIT within limits. 'F 'F/HR! Normal > 270'F s 100 270 to 171 s 50 s 170 s 10 Nat Circ > 280'F s 10 () 280 to 150
< 150 s5 ,,
s 2.5 s 50 01SG Tube Refer to EP-390
. Leak Table 3
*0nly to be used if RCS PRESS is mainteined above Nat Circ. i cooldown curve, see Enclosure 3. ,
Maintain RCS cooldown rate: o Throttle 18Vs or ADVs. i o ihrottle Efl0 control valves, o 1[ adequate subcooling .: margin exists, 1113 throttle HPI flows, i i
) AP 380 REV 13 PAGE 29 of 55 ESA
- .;. s L..
i 3.3 ji adequate subcooling margin does E exist, ;
.M: ,
i-
) o Within 2 min, stop all RCPs, j , a . ; ! o Raise OTSG 1evels to 95% using EFW, ;
o Start full HPl. j 3.5 J incores indicate superheated conditions, ; M GO TO EP-290, Inadequate Core Cooling, beginning with Step 2.1. j 3.14 ;I RCS PRESS is > 2300 psig,. l' M open the PORV and lower RCS PRESS to = 100 psig above
.OTSG PRESS.
3.15 ;I HPI throttle requirements are met,
- M open MVP recircs, ,
&& throttle HPI flows as required, o HPI must be throttled to maintain subcooling margin ,
s 100'F when no RCPs are operating. ! ()
, fm .
o E adequate subcooling margin exists based on incores ..'
- HPI must be throttled to maintain RCS PRESS and TEMP '
e ow NDT curve. o HPI must be throttled to maintain HPl flow < S40 gpm/ pump. o HPI should be throttled to maintain PZR level 80" to . 220" Wtilli adequate subcooling margin exists based on ! incores, o HPI may be throttled when adequate subcooling margin exists based on incores. 3.17 E RCPs are available. AbD OTSGs are available, i lti[!i start 1 RCP in each loop. , E RCPs are available, , 6@ OTSGs are E available.
- l llliti start 1 RCP.
O J AP-380 REV 13 PAGE 30 of 55 ESA .. l l
I I 3.0 Fel Lotf-UP ACT100t$ (Colff'D)
!)3
&C11gG DETAILS
'- 3.24 'l RCS PRESS lowers to I Notify AC Operator to -
! I00psig, ~~
remove locks and close AtiQ adequate subcooling Bkrs for CFV 5 and CFV 6, 9 i ma in exists. CFT outlets, isolate CFis, bypass LPI actuation. 2 ,,_ Close: , o CFV-5 o CFV 6.
- 3. Select the following to
" BYPASS" on both A and B LPI channels:
LPI RC4, LPI RCS, LPI RC6. 3.25 1[ conditions exist to o Stop HPI if All of the stop HPI, following conditior.s exist: IlM: l o Adequate subcooling margin, Stop HPI,
,) o PZR level is 1 50",
(V Ensure PORV is closed, o OTSG heat removal, Ensure PZR vents are closed, o leak is within capabilities of normal make up, o PZR vents j o RCV 159 o RCV 160. l 3.26 lE EF Tank is < 3 ft, , .UD CONCURRENTLY PERFORM l AP 450, EFW Actuation, beginning with Step 3.18. : 3.27 If PZR bubble is desired, , l ItB refer to OP 305, L' Operation of the PZR, . Section 5.2. ., l l AP-380 REV 13 PAGE 31 of 55 ESA
c ,
^ 's ;
o 3.3 equate subcooling margin does MQI exist, l 3 !( ,
) o Within 2 min, stop all RCPs, ,
o Raise OTSG 1evels to 95% using EFW, ) o Start full HPl. 3.5 ;I incores indicate superheated conditions,
'M GO TO EP 290, Inadequate Core Cooling, beginning with Step 2.1.
3.14 ;I RCS PRESS is > 2300 psig, i 3EN open the PORY and lower RCS PRESS to = 100 psig above l OTSG PRESS. 3.1S If HPI throttle requirements are met, ; IBEH open MVP recires, . ANQ throttle HPI flows as required. ! o HPI must be throttled to maintain subcooling margin i em s 100'F when no RCPs are operating. o mar in exists based on inceres " ,
;Iadequatesubcoolinft1
]EH HPI must be thro o maintain RCS PRESS and TEMP below NDY curve, o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. ,
o HPI should be throttled to maintain PZR level 80" to 220" EDEN adequate subcooling margin exists based on incores. o HPI may be throttled when adequate subcooling niargin exists based on inceres. 3.17 .LE RCPs are available, . AND OTSGs are available, 1613 start 1 RCP in each loop. -
.lf RCPs are available, AND OTSGs are EQI available, .
JEEN start 1 RCP. h(~' AP-380 REV 13 PAGE 32 of 55 ESA
.- 3.0 FOLLOW-UP Act!0NS (CMT'D1 ,n ACTIONS DETAILS
(,) . 3.28 o Tube to Shell AT equals
. E;Icooldownison1OTSG, N ensure tube to shell Avg of 5 OTSG shell AT < 100'F on isolated thermocouples minus Tc.
OTSG, o Computer points are R-773 ' and R-774. o Feed and steam OTSG to maintain tube to sh611 AT within limits. 3.29 E EDGs are HQI energizing o IE EDGs have run > 5 min the ES busses, unloaded, IBEN load EDGs, IBIH EDGs should be QB stop EDGs. loaded. o CONCURRENTLY PERFORM applicable steps of SP-354A or B, EDG Monthly Test, to
. load or stop EDGs.
3.30 1E baron concentration of . RB sump could have been diluted by significant steam or FW 1eaks in the RB, IBf8 notify Chemistry to . t sample RB Sump, t e
*f l
l l ( AP-380 REV 13 PAGE 33 of 55 ESA
r , Las 3.3 2 adequate subcooling margin does HQI exist,
'EN:
p/ ' i L \g o Within 2 min, stop all RCPs, o Raise OTSG levels to 95% using EFW, o Start full HPl. [ 3.5 E incores indicate superheated conditions, JEH GO TO EP-290, Inadequate Core Cooling, -
- beginning with Step 2.1.
l 3,14 E RCS PRESS is > 2300 psig, IBEH o)en the PORV and lower RCS PRESS to = 100 psig above OTSG PRESS. ,
~~~
3.15 E HPI throttle requirements are net, IBE8 open MVP recircs, - AND throttle HPI flows as required. , o HPI must be throttled to maintain subcooling margin p i 100*F when no RCPs are operating. o Jhadequatesubcoolingmarginexistsbasedonincores ' IBEM HP! must be throttled to maintain RCS PRESS and TEMP below NDT curve. O HPI'must be throttled to maintain HPl flow < 540 gpm/ pump. ; o HPI should be throttled to maintain PZR level 80" to 220" M adequate subcooling margin exists based on incores. o HP1 may be throttled when adequate subcooling margin ; exists based on incores. 3.17 E RCPs are available, 65D OTSGs are available, ' IEEN start 1 RCP in each loop. E RCPs are available, .- AND OTSGs are 801 available, . ; JE N start 1 RCP. - f"N Q AP-380 REV 13 PAGE 34 of 55 ESA
,w -- --m a -- ,-,
T 3.0 FOLLOW-UP ACTIONS (CONT'D) i ACTIONS DETAILS r3 k ~- J'c.***** ..*******************.. ******************************......*** . i CAUTION Due to MUV-62 being normally closed, both DH trains are required ; to be in operation to ensure suction to all the MVPs. c****.*************************.*************************************** ,; i 3.31 If BWST is < 4 ft, 1 Ensure Open LPI suction 1 QB as directed by Step 3.7.2 from BWST. IREN : i
- 1. Establish LPI o DHV-34 o DHV-35.
suction from the BWST. 2 Start DHP-1A and DHP-1B. j
- 2. Establish HPI suction from LPl. 3 Open HPI suctions from !
LPI: '!
- 3. Notify AB Operator !
to energize DHV-3. o DHV-11 o DHV-12. l 4 Close HPI suctions from BWST: ! o MUV-58 o MUV-73. ('~') 5 Observe MVPs for signs of ,
\> cavitation.
6 Energize DHV-3 at ES-MCC-3Al. [ 3.32 ~1E BSP is operating, 1. Select RB spray control , lHEN place BS control valves to " LOCAL": to " LOCAL" position prior , to establishing suction from o BSV 3 o BSV-4 ' the RB sump.
- 2. Ensure BS flows of 1100 to 1300 gpm/ train. : '
1 p) (, AP-380 REV 13 PAGE 35 of 55 ESA l l i
m1 .
- 1 l
- t. ,
3.3 J equate subcooling margin does tiQI exist, (~ (,) o Within 2 min, stop all RCPs, , I o Raise OTSG 1evels to 95% using EFW, l o Start full HPI. s 3.5 IE incores indicata superheated conditions,
- IlifH GO TO EP-290, Inadequate Core Cooling. I beginning with Step 2.1. ;
i 3.14 lE RCS PRESS is > 2300 psig, ItiEN o)en the PORV and lower RCS PRES 5 to a 100 psig above ; OTSG PRESS. .; i i i 3.15 lE HPI throttle requirements are met, ItiEN open MVP recires, , AND throttle HPI flows as required. ,
~
o HPI must be throttled to maintain subcooling margin rm i s 100'F when no RCPs are operating. , t V o 2 adequat6 subcooling margin exists based on incores I E li HPI must be throttled to maintain RCS PRESS and TEMP ; below NDT curve. !
- o HPl must be throttled to maintain HPI flow < 540 gpm/ pump.
o HPI should be throttled to maintain PZR level 80" to i 220" )itiEU adequate subcooling margin exists based on - incores. . o HPI may be throttled when adequate subcooling margin , exists based on incores. l t
*i 3.17 ff RCPs are available.
AND OTSGs are available, i IBKS start 1 RCP in cach loop. j lE RCPs are available. l l AND OTSGs are tiQ1 available, '. I IliEN start 1 RCP. l AP 380 REV 13 PAGE 36 of 55 ESA ,,' l l l
f . a 3.0 ' FOLLOW-UP ACTIONS (CONT'D) ,
<x ~
ACTIONS DETAILS ! 1 (
~') 3. 33 H. BWST i s < 2. 5 f t , 1 Verify RB FLOOD level of -
, M establish LPI suction 2 1 ft. I from RB sump,
&NQ !solate NaOH tank. 2 Open LPI suctions from RB sump:
o DHV 42 o DHV-43. 'I 3 Close LPI suctions from ! BWSit ! o DHV-34 o DHV 35. ! 4 Ensure HP1 suction from LPl. . 5 Close NaOH tank outlets: 'i o BSV.ll o BSV 12. j i t l I i
,I; l
e () AP 380 REV 13 PAGE 37 of 55 ESA
}
O r 3.3 J equate subcooling margin does 301 exist, o . , ( ) o Within 2 min, stop all RCPs, l 0 Raise OTSG 1evels to 95% using EFW, o Start full HPl. l 3.5 If incores indicate superheated conditions, , i IHEN GO TO EP 290, inadequate { ore Cooling, i , beginning with Step 2.1. ! l l [ 3.14 2 RCS PRESS is > 2300 psig, 1 M g o>en the PORV and lower RCS PRESS to = 100 psig above OTSG PRESS. 3.15 If HPI throttle requirements are met, !
"d3 open MVP recires, ;
M) throttle HP! flows as required. ' o HPI must be throttled to maintain subcooling margin t s 100'F when no RCPs are operating. l
' f (J o 2 adequate subcooling margin exists based on incores t' E H HPI must be throttled to maintain RCS PRESS and TEMP below NOT curve, j
o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. o HPI should be throttled to maintain PZR level 80* to :
*220" WliLN adequate subcooling margin exists based on incores, i o HPl may be throttled when adequate subcooling margin exhts based on incores. ;
3.17 If RCPs are available, j
@ OTSGs are available, ;
ItiLN start 1 RCP in each loop. ' If RCPs are available, e! E OTSGs are HQI available, ,: ItiLN start 1 RCP. AP-380 REV 13 PAGE 38 of 55 ESA
r : i
./ !
3.0 'FOLLW-UP ACTIONS (CONT!D) t t l r
- n. ACTIONS DETAILS L
( ) !
's c .........**........... ********...**************..******. ************ .
[AUTION ; HPI flows mus,, .?t be throttled < 100 gp# pump to prevent pump l
. co.d..em..ane.
E .*******......e********...***......****....************ t
'l 3.34 11 LPI flow is > 1000 gpm '
I per injection line for for 2 20 min. l JEN: _ Stop HPI, Stop HPI: l i Ensure PORY is closed, 1. Open MVP recirc valves: j Select PORV to o MUV 53 o MUV 257. "
" Low Range',
- 2. Stop all MVPs and close !
all 4 HPI injection ' valves. isolate CFTs. Isolate Cris: n 1. Notify AB operator to ! remove locks and closed i (b' Bkrs for CFT isolations: - o CFV 5 o CFV-6, j
. 2. Close: j o CFV-5 o CFV 6.
Ensure all high point Ensure closed: vents are closed. RCV 159 RCV 160 l t _ , RCV 157 RCV 158 : RCV-163 RCV-164 .i 3.35 Ji adequate subcooling Refer to DP 404, Decay Heat margin exist, Removal System, Section 4.12. i' ANQ both LPI trains are . available, .. IBEN establish 1 LPI train in the DHR mode. > l AP-380 REV 13 PAGE 39 of 55 ESA
d'
. 3.3 ;f adequato subcooling margin does HQI exist, M H:
l 1, o Within 2 min, stop all RCPs, , o Raise OTSG 1evels to 95% using EFW, o Start full HPl. 3.5 If incores indicate superheated conditions, W GO' TO EP-290, Inadequate Core Cooling, beginning with Step 2.1. m 3.14 IE RCS PRESS is > 2300 psig,
.T M open the PORV and lower RCS PRESS to = 100 psig ebove UTSG PRESS.
5.15 IE HPl throttle requirements are met, J11[N open MVP rectres, AND throttle HPI flows as requirad, o .4PI must be throttled to maintain subcooling margin s 100'F when no RCPs are operating. ('~}' ' o ;I adequate subcooling margin exists based on incores [BD HPI must be throttled to maintain RCS PRESS and TEMP below NDT curve, o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. o HPl should be throttled to maintain PZR level 80" to - 220" WHEN adequate subcooling margin exists based on incores, o HPl may be throttled when adequate subcor. ling roargin exists based on incores. 3.17 IE RCPs are available, AND OTSGs are available, ldEN start 1 RCP in each loop. 11 RCPs are available. - AND OTSGs are MQI available. IBfB start 1 RCP. AP 380 REV 13 PAGE 40 of 55 ESA ,, t
g ) 3.0 FOLLOW UP ACTIONS (CONT'D) ACTIONS DETAILS
! ) 3.36 M LPI or DHR is sulnlying core cooling, -
JR M stop OTSG cooling. Continue on in this o To stop OTSG cooling: procedure, o Stop MFW and EFW pumps, . o Close: A OTSG B OTSG FWV 30 FWV 29 FWV 31 FWV 32 FWV 40 FWV 39 MSV 55 MSV-56 MSV 30 and 32 MSV 29 and 31 ' MSV 53 MSV-54 EFV 56 and 58 EFV 55 and 57 9 3.37 R{f3 RB PRESS is < 10 psig 1 Stop BSP 1A and BSP 18. and nct rising, M stop RB spray. 2 Close BSV 3 and CSV 4, BS control valves. Continue on in this .
- [,'u] procedure. 3 Depress 'BSP AUTO START PERMIT RESET" pushbuttons on both ES channels.
~
4 if RB PRESS increases to 10 asig, It[Li reestablish RB spray, li0lt RB Cooling Fans should stay in operation until RB H, levels are l known, to provide mixing of RB atmosphere. 3.38 Notify Chemistry to begin Notify Chemistry to refer to - monitoring RB atmosphere EM 308, Post Accident Sampling l H2 level, of the RB Atmosphere. 3.39 GO TO OP-?09 Plant Cooldwn.
- 3.40 INTENTIONALLY LEFT BLANK AP-380 REV 13 PAGE 41 of 55 ESA
)
1 .* , l 3.3 ,1 adequate subcooling margin does HQI exist, Eli: (j q Within 2 min, stop all RCPs, , i ! o Raise OTSG 1evels to 95% using EfW, ; o Start full HPI. 3.14 E RCS PRESS is > 2300 psig, ': Iglj open the PORV and lower RCS PRESS to = 100 psig above OT5G PRESS. 3.15 If HPI throttle requirements are met, IffElf open MVP recires, 6tfD throttle HPl flows as required. o HPI must be throttled to maintain subcooling margin s 100'F when no RCPs are operating, o IE adequate subcooling margin exists based on incores IEtt HPI must be thrcttled to maintain RCS PRESS and TEMP
. below NDT curve. ;
o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. O o HPI should be throttled to maintain PZR level 80" to 220" Wt!Eli adequate subcooling margin exists based on . incores. . o HPI may be throttled when adequate subcooling margin ! exists based on incores. ' 3,17 IE RCPs are available, . AlfQ OTSGs are available, , Il1Uf start 1 RCP in each. loop. If RCPs are availablo, : r 6tfD OTSGs are lf01 available, lti[ti start 1 RCP. ., e! ef 8 ( AP 380 REV 13 PAGE 42 of 55 ESA
'- i 3.0 FOLLOW UP ACTIONS (CONT'D) ,
l
~ '
; ,'~s ACTIONS DETAILS j
\ )
~/ .
.~
getn .' The following steps are to initiate HPI/PORV cooling. e.*********************....*****..******...****.******************..... CAUTION i HPI cooling must be established
********* ... ***...*****prior t openin.g of.the PORV.
o any , c*************. ****....... .*** ....$.** *** : 3.41 Start full HPI, 1, Open MVP suctions from the BWST: o MUV 58 o MUV-73. ;
. 2. Ensure 1 2 MVPs and their cooling water pumps are i running.
'3. Open HPI Valves: i MUV 23 MVV-24
(.
*x_,) MUV-25 MUV-26. .
- 4. Ensure total HPI flow is f
> 500 gpm.
t I E e: e ,. t AP 380 REV 13 PAGE 43 of 55 ESA ..
( e l 3.3 J equate subcooling margin does HQI exist,
,(v) e o Within 2 min, stop all RCPs, o Raise OTSG 1evels to 95% using EFW, o Start full HPl.
3.5 ;I incores indicate superheated conditions, tiG GO TO EP-290, Inadequate Core Cooling, beginning with Step 2.1. L 3.14 ;I RCS PRESS is > 2300 psig, 38 open the. PCRV at:d lower P.CS PRESS to a 100 psig above OTSG PRESS. 3,15 E HPI throttle requirements are met, M H open MVP recires, 83D throttle HPI flows as required. o HPI must be throttled to maintain subcooling nargin
, 7m s 100'F when no RCPs are operating, o ;I adequate subcoolin margin exists based on incores -
E H HPI must be thro tied to maintain RCS PRESS and TEMP below NDT curve, o HPl must be throttled to maintain HPI flow < 540 gpm/ pump. o HPI should be , throttled to maintain PZR level 80" to 220" MtiG adequate subcooling margin exists based on incores. o HPI may be throttled when adequate subcooling margin exists based on interes. ; 3.17 E RCPs are available, .' AtiQ OTSGs are available,
))iG start 1 RCP in each loop.
E RCPs are available, .: AND OTSGs are 801 available, ,. J110 start 1 RCP. i
.?
1 {c AP-380 REV 13 PAGE 44 of 55 ESA
)
'I I'
. - - . v w - e -
r , 3.0 FOLLOW-UP ACTIONS (CONT'D1 - (3 ACTIONS DETAILS 3.42 E 'OTSG heat removal is o PORV should be left open until - 801 available, 101 of the following condi-Alf only 1 MVP is available, tions exist:
.Tii)j open the PORV to l increase HPI flow, o HPI can be stopped, o OTSG heat removal is established.
E PORV is HQI available, o PZR vents: IllEN use PZR vents, o RCV-159 o RCV-160. N9le 1 1 OTSG should be 2 6" prior to closing the PORV. . 3.43 Open the PORV before 1 Ensure RCV-II, PORY exceeding RCS PRESS block, is open. limits. 2 ~~ Open PORV before.
. E PORV is HQI available, . ItiEN open the PZR vents, o Exceeding PTS limits, o Exceedir<g NDT limits, -
o Exceeding 2300 psig. 3 Verify PORV is open using ultrasonic indications. o Maintain PORV or PZR vents open until OTSG heat removal is established or LPI is providing core cooling. o PZR vents: : l 0 RCV-159 o RCV-160. 3.44 E >l RCP is operating, Maintain RCP-1B operating to .: IliEH reduce operating maximize PZR spray. RCPs to 1. AP-380 REV 13 PAGE 45 of 55 ESA
' ~
f.g , [..- l
- 23 jQd'a"*t'5"6c 'i"S **rSiad'S8 I**i5t' : ! U o Within 2 min,'stop all RCPs, .
o Raise OTSG levels to 95% using EFW, y i o Start full HPl. ,j 3.5 E incores indicate superheated ccnditions, M GO TO EP 290, Inadequate Core Cooling, ( L beginning with Step 2.1.
- ' - = -- - - -
r' *3.14 E RCS PRESS is > 2300 psig. M o)en the PORV and lower RCS PRESS to e 100 psig above OTSG FRESS. ; r 3.15 E HPI throttle requirements are met, ; M open PUP recircs, 6@ throttle HPI flows as required.
- t HPI must be throttled to maintain subcooling margin o
(' s 100'F when no RCPs are operating. o H adequate subcooling margin exists based on incores M HPI must be throttled to maintain RCS PRESS and TEMP - below NDT curve. o HPI must be throttled to maintain HPI flow < 540 gpm/ pump. < o HPI should be throttled to maintain PZR level 80" to 220" E adequate subcooling margin exists based on incores. o HPI may be throttled when adequate subcooling margin exists based on incores. ; 3.17 H RCPs are available, AND OTSGs are available, E start 1 RCP in each loop, i H RCPs are available, S ANQ OTSGs are hQI available, E start 1 RCP. l k . AP-380 REV 13 PAGE 46 of 55 ESA .. l l
- m. , - -
l,
- 3.0 FOLLOW-UP ACTIONS (CONT'D)
ACTIC%$ LETAILS
,r3
'- )3.45' $ .$RCSbypass is < 1700 psig. By ass HPl by selecting the -
HPI. fo lowin to " BYPASS" on both A and B channels: Continue on'in this procedure. *HPI RCl",
"HPI RC2",
"HPI RC3".
3.46 Select both RB sump punips
- to " POLL TO LOCK".
t t e O 9 4 4 t I I
^
AP 380 REV 13 PAGE 47 of 55 ESA l
g ,
. 3.3 equate subcooling margin does MQI exist,
') ' o Within 2 min, stop all RCPs, a .
o Raise OTSG levels to 95% using EFW, o Start full HPl. E incores indicate superheated conditions, 3.5 Ifif.N GO TO EP 290, Inadequate Core Cooling, beginning with Step 2.1. M 3.14 E RCS PRESS is > 2300 psig, E own the PORY and lower RCS Pr.ESS to = 100 psig above ' OTSG P1ESS. , I 3.15
-.. E hPi thr<ttle requirements are met, M open HOP recires, At!Q tt.cottle HPI flows as required.
o HPI must be throttled to maintain subcooiing margin s s 100*F when no RCPs are operating, o E adequate subcoolin margin exists based on incores - M HPl must be thro tied to maintain RCS PRESS and TEMP below NDT curve, o HPI must be throttled to maintain HPI flow < 540 gpm/ pump, o HPI should be throttled to maintain PZR level 80" to 220" M adeounte subcooling margin exists based on I incores, o HPI may be throttled when adequate subcooling margin exists based on incores. 1 L 3.17 E RCPs are available, . l AND OTSGs are available, M start 1 RCP in each loop. L E RCPs are available, e AND OTSGs are NO.I available, ; M start 1 RCP. ~ 1 AP-380 REV 13 PAGE 48 of 55 ESA 1
3.0 F0LLOW-UP ACTIONS (CONT'D) e' .- ACTIONS DETAILS V - 3.47 _._ Establish RB cooling, o Ensure all RB cooling fans are operating in slow speed. o Ensure RB cooling fans are on SW cooling. , 891st
.l M RCS TEMP < 425'F AND OTSG PRESS < 400 psig, M MFWBPs may be used to recover from HPI/PORV cooling.
3.48 M MFW or EFW beco?ae available, M CONCURRENTLY PERFORM AP-450, EFW Actuation, beginning with Step 3.9.
. Continue on in this procedure. ?\
V - 3.49 GO TO Step 3.16 in this procedure. i
- 2 I
4 h
-i AP-380 REV 13 PAGE 49 of 55 ESA
c , 4 ll . LJ . k-BLANK PAGE y
\ ...I l
l 4 i * ( AP-380 REV 13 PAGE 50 of 55 LSA j ..
. - - - - - . - , . - -- - .-n,-- ,-~.,...e-... , - . - - -
r, Enclosure 1 RCP NPSH Curves
)
m 4R 1 BCP , 3 = OPERATION '
'g (1/0,1/1.1/2)
~
(
.n u
g
,[
2 RCP - OPERATION l ( /0,2/2) SATURATION ! CURVE / 1m i
/ . .
H RC TEMP. T g (*F) . The acceptable region is above the applicable NPSH curve. AP-380 REV 13 PAGE 51 of 55 ESA ,,
~ '
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ye EAP-380x REV 13 PAGE 52 of 55 ESA f
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a Enclosure 2
'-* Cooldown Curves 2600
// '< ,
24M ADEGOATE SUBCOOLING
~
MARGIN 2200 -! NDT LIMIT
/ .
ll : 1800 , I -
. il pp;
~
; ( /
g1400 1200
- j . . .
< ' 2 BCPs 1000 l- 800 *'
[ SATURATION CURVE ; 800
, I
/ /
// -
200-0 J _ ltl0 300 500 'm ' RC TEMP. Tg(*F) Acceptable region is below and to the right of the NDT curve. Acceptable region is above and to the left of the applicable Fuel Pin
- in Compression curve.
Acceptable region is above and to the left of the adequate subcooling margin curve. - AP-380 REV 13 PAGE 53 of 55 ESA l ,, l 1 . ,. , ~ . . _ _ . - - _ _ _ . , _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ ._ __ _ . _ . . - - . . . _ _ _ . _ _ _ _ . . _ _ _ . _ . _ _ _
m . i: o.',
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c-
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BLANK PAGE , l l
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1. i :i l- i o I i
'l .
l . REV 13 PAGE 54 of 55 AP-380 ESA
r , Enclosure 3 Natural Circulation Cooldown Curve > 10*F/hr 2400 - ADtwCATE SUBCOOLING MAhGIN i 2000 ' NDT LIMIT 1800- , 1000 = =- 5
- 1400 f
l
~
, y - l s 1200 l 9 s Na tural ' I ,[ Circulation 1 3 1000 -- . . 8'00
*O <
SATURATION s CURVE 600 V l
/
/ .
e /
/ '
400 , , l 200 , 1 , 0
- j l 100, 3b0 $b0 .
RC TE.9P (*F) Acceptable region is below and to the right of the NDT curve. Acceptable region is above and to the left of the Natural Circulation
- Curve.
Acceptable region is above and to the left of the adequate subcooling margin curve. AP-380 REV 13 PAGE 55 of 55 ESA ,,
h, ,. I
, + . . -
' "3 REV 10 100 DATE 10/27/89 EP 290 J .
INADEQUATE CORE COOLING , 1.0 ENTRY CONDITIONS 11 incores indicate superheated conditions, IllEH use this procedure, , I Document Section ' NFORM ATION ONL .
- C. R Nuclear
_ i ' (,,) l 1 1 1 .. 4 l l .. This Procedure Addresses Safety Related Components - 1 Approved by NOS toe 6% con >A Date 10 e9 , I \'
"% ) ..
EP-290 PAGE 1 of 33 ICC l
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p'.- 2.0 IMMEDIATE ACTIONS e
, ) ACTIONS DETAILS
'J 2.1 Ensure full HPI flow. 1. Ensure MVP suctions from BWST are open:
o MVV-58 o MVV-73. ,,
- 2. Ensure at least 2 MVPs are operating. -
- 3. Ensure all available HP1 valves are open:
o MUV 23 o MVV-24' o MUV-25 o 'MUV 26. ,.
- 4. Ensure MVP recircs are closed: ,
o MUV-53 o MUV-257. 4
. 5. Verify HP! flows. ,m, I
2.2' IE LPI is delivering flow, 1. Ensure 2 DHPs are ItiG ensure full LPI flow. operating.
- 2. Verify full LPI flow.
, l 2.3 Ensure OTSGs are at 95% level. 1. Ensure both trains of EFW are actuated.
- 2. Ensure 95% level setpoint is selected on both trains. .
- 3. 1E OTSG levels are NOT at 95%, -
l }}1@ ensure > 125 gpm/0TSG EfW flow. l \ . - (3 - V EP-290 REV 10 PAGE 3 of 33 ICC --
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F 3.0 F0LLOW-UP ACTIONS a i , n ACTIONS DETAILS l b _ i 3.1 Ensure CFT isolation Ensure open: valves are open. o CFV-5 c CSV-6. 3.1.1 Ensure RB isolation has Ensure RB isolation and cooling l occurred on both ES trains status lights are blue.
**************************+******************************************** I CAUTION IE EFP-1 is HQI available, 1 AND EFP-2 is HQI on AS, IEEN maintain OTSG PRESS > 100'psig, to ensure availability of EFP-2. "
*********************************************************************** j 3.2 lE EFP-1 is HQI Open:
,available,
- f. THEN notify TB Operator to 1 ASV-18, AS isolation from ;
align AS to EFP-2. Units 1 and 2. '
'b 2 ASV-15, AS Hdr isolation *l to EFP-2.
3 Blowdown lines on AS line drain trap. l 4 ASV-23, AS isolation to i EFP-2. , 3.3 Maintain OTSG Tsat Lower OTSG PRESS using TBVs , 100*F below Tsat for or ADVs. existing RCS PRESS until OTSG heat removal is established. EP-290 REV 10 PAGE 5 of 33 ICC ,,
r
+
~*
cococcoooooooooooooocecoconoooooooooooooooooooooooooooeo ... oeo******* f,,, CAUTION
- r"' lE EFP-1 is HQI available, ' : v) '
ANQ EFP-2 is fiQI on AS, IliEN maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2. 1 4 0 e
;D.
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i e 1 1 8 l l l e i N- EP-290 REV 10 PAGE 6 of 33 ICC . .
-, - , ->-.,-%- + - ~ , -.- -- ,, , .-,,--+m., - - - - - - + - - - - - , w w-- ,a . .. - - - -,+.----w-.-y,--v,,,-,e--_v-w- . - ,w -- .,----
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.s 3.0 FOLLOW-UP ACTIONS (CONT'DL 1
/s
(,) AQIlQHS DETAILS 34 IE RCS PRESS reaches Depressurize RCS using PORV. l 2300 psig, ; IHEN depressurize RCS-to If PORV fails to close, . 100 psig above OTSG PRESS. IHEN close RCV-11, PORV block .I valve. If PORV is HQI available, IHEN depressurize RCS using High Point vents: i L RCV-157 RCV-158 l RCV-163 RCV-164 RCV-159 RCV-160. 1 CAUTION: l 1
. () Balancing of HPI flows could lead to ICC during certain SBLOCA scenarios. Therefore HPI flow balancing should not be performed.
\m / HPI . ,
throttling criteria remain in effect.
****************************************************************************** )
3.5 lE, at anytime while 1. Reset LPI bistables: performing this procedure,
. LPI actuation is present, RC4 in ACT. CHAN. CAB. #1 AND RCS pressure is > 500 PSIG RC5 in ACT. CHAN. CAB. #2 ;
THEN: RC6 in ACT. CHAN. CAB. #3 Stop both LPI pumps. 2. If HPI actuation is present, l T!!EN select the following to Go to Step 3.6 of this " BYPASS" on both A and B HPI procedure. channel s:
"HPI RCl" "HPI RC2" -
"HPI RC3"
.l 3. STOP DHP-1A and DHP-1B -
I (~~) s EP-290 REV 10 PAGE 7 of 33 ICC -
. p. .
!. m ..- 'l j l , i
... 1
************************************************+********************** j ;
L .- CAUTION j ;
,n ! ,
1 1E EFP-1 is HQI available, N) -
't MQ EFP-2 is HQI on AS, -
IHEN maintain OTSG PRESS > 100 psig,. l t to ensure availability of EFP-2. ! r e I - u . . , F
* [
L 2 1 I 1' G
~O y EP-290 REV 10 PAGE 8 of 33 ICC --
l 1-i l' l
' ~
f-. ; t. 3.0 FOLLOW-UP ACTIONS (CONT'D)
?%.
( ,) ACTIONS DETAILS 3.5.1 If, at anytime while o Ensure DHV-110 and ' performing this procedure, OHV-111 are operating ' LPI actuation is present, properly AND RCS pressure is < 500 PSIG AMQ LPI flow is > 300 o Refer to OP-404 for DHP .: GPM /. pump run time limits 1 IHEH: . o Select the following to Ensure proper operation " BYPASS" on both A and B Bypass LPI actuation channels: Go to Step 3.6 of this "LPI RC4" procedure. "LPI RC5" o "LPI RC6" ( 4 i. l l L l 1 1 l EP-290 REV 10 PAGE 9 of 33 ICC --
, , . ,e.. ,_ _ . _ . _ . . _ _ . _ _ _ _ . . - . . _ - . . . _
, . .e .s '
4 coo'cocococooooeococoooooooooooooooo**oooooooooooooooo****come**********
, CAUTION !
I ['T 1E EFP-1 is HQI available, N/ AND EFP-2 is HQI on AS, _ IllEH maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2. ! h 1 e i . v .. 5 t l 1: I l . 1: l e I f
'b EP-290 REV 10 PAGE 10 of 33 ICC ..
( p . L 3.0 F0LLOW-UP ACTIONS (CONT'D)
,n -
b
'l ') . ACTIONS DETAILS v .
3.5.2 E , at anytime while o Select the following to t performing this procedure, " BYPASS" on both A and B LPI actuation is present channels: AND RCS pressure is < 500 PSIG AND LPI flow is < 300 "LPI RC4" .. GPM / pump _. "LPI RC5" .
"LPI RC6" Bypass LPI actuations L Increase LPI flow o To increase ! PI flow, Perform the following steps in order.
- 1. Ensure DHV-Il0 and DHV-Ill are open.
IE LPI flow is ,
>300 GPM ,
M GO T0 step'3.6
- 2. Open the PORV o RCV-10 IE LPI flow is
>300 GPM i
M GO T0 step 3.6 , (g) 3. Perform step 3.6 of this procedure, HPI suction from LPI.
, M RETURN IQ this step. ;
u IE LPI flow is t
>300 GPM l E GO T0 step 3.6
- 4. Open the High Point l
! vents. PZR vents: - o RCV-159 o RCV-160 Hot Leg vents: " o RCV-157 o RCV-158 , l 0 RCV 163 l 0 RCV-164 GO T0 step 3.6 L(7- ,. EP-290 REV 10 PAGE 11 of 33 ICC - i i lT , v , , , - - . . .- -. - - . , - - , ~. , - -
t-' Leooooooooooooooeooooooooooooooooo~oooo,oooooooooooooooooooooooooooooooo
., LAUTION ;
s[d
') I IE EFP-1 is HQI available, AND EFP-2 is RQI on AS, IBEN maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2. '
1
+
e
/ k $) .
t h ft
- EP-290 REV 10 PAGE 12 of 33 ICC --
r 3.0 FOLLOW-UP ACTIONS (CONT'D)
/~'S ACTIONS DETAILS
~
CAUTION DLe to MVV-62 being normally closed, both DH trains are required to be in operation to ensure suction to all the MVPs. - 3.6 If, at any time while 1 Ensurc Open LPI suctions . performing this procedure, from BWST: BWST level reaches 4 ft, IHEN o DHV-34 o DHV-35. 1 Establish LPI suction 2 ~ ~ ~ Start DHP-1A and DHP-1B. from BWST. 3 Open HPI suctions from 2 Establish HPI suction LPI:
"~ from LPI.
o DHV-ll o DHV-12, 3 Notify AB Operator to 1 energize DHV-3, 4 Close HPI suctions from BWST: o MVV-58 o MVV-73. () 5 Observe MVPs for signs of cavitation, j 6 Energize DHV-3 at ES MCC-3A1. i g-~ . (- / EP-290 REV 10 PAGE 13 of 33 ICC .-
f . ocococecco occooooooccoooooooccocoooooooooooooooooooooooooooooootocoo* CAUTION
'9
, I
) 1E EFP-1 is tiQI available, r
, d t& EFP 2 is 1101 on AS, -
ItiG maintain OTSG PRESS > 100 psig, i to ensure availability of EFP-2. - 3.6 If BWST level reaches 4 ft, - Ilia:
- 1. Establish LPI suction from BWST, .
- 2. Establish HPI suction from LPI,
- 3. Energize DHV-3.
e n
!, ,) '
e' LA 'd ! EP-290 REV 10 PAGE 14 of 33 ICC - - l 1. i
. _ _ _ _ . _ , _ . - _ _ - . . . ~_ _ . _ - , _ . . - - - - -- - - - . ,
(F ' n . V, 4 3.0 F0LLOW-UP ACTIONS fCONTiD,). r^N ACTIONS DETAILS i
~~'
) ~
, 3.7 IE at any time while 1 Select BS control valve performing this procedure, controllers to " LOCAL":
BWST level reaches 2.5 ft, IR@ o BSV 3 o BSV-4. Select BS control valves 2 Verify RB sump level of to " LOCAL". 2 1 ft. Establish LPI suction 3 Open LPI suctions from from RB sump. RB sump: Close Na0H tank outlet o DHV-42 o DHV 43 i valves. 4 Close LPI suctions from the BWST: o DHV-34 o DHV-35 5 Ensure HPI suction from LPl. 6 Close Na0H tank outlets: x o BSV-Il o BSV-12
)' !
3.8 Determine proper ICC region o Select SPDS to ICC curves based on incore TEMP and with incores selected. l RCS PRESS. i' If SPDS is N_Q1 operable, Id@ Avg the 5 highest incores TEMPS MQ see Enclosure 1 for proper ICC region. ! l o Refer to computer group 60 ; for incore TEMPS. ! 8; I EP 290 REV 10 PAGE 15 of 33 100 l ..
L.'- - cooooooococococoooooccooooooooooooooooooooooooooooooooooooooooooooooooo CAUTION
!'f~'y Jf EFP-1 is HQI available,
(_,/ AND EFP-2 is HQI on AS, . , 181H maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2. 3.6 If BWST level reaches 4 ft, IHEH: l
- 1. Establish LPI suction from BWST, Establish HPI suction from LPI, '
2.
- 3. Energize DHV-3.
3.7 If BWST level reaches 2.5 ft, IBEH: o Select BS control valves to "LO' CAL", f s,- (s.s) o Establish LPI suction from RB sump, o Close Na0H tank outlet valves. 4 l L . .i i. l l ,' (~'% 's/ EP-290 REV 10 PAGE 16 of 33 ICC .. l
( ' i o 3.0 FOLLOW-UP ACTIONS (CONT'.[!1 Q ACTIONS DETAILS Qi - CAUTION Do HQI revert to the actions for the less severe ICC region , unless directed by this procedure to ensure core cooling is ! maintained. 3.9 IE, at any time while performing this procedure, incore TEMPS increase to , region 3, l IBEB GO TO Step 3.15 ' in this procedure. 3.10 1E, at any time while . performing this procedure, ! incore TEMPS increase to Region 4, , IBEB GO TO Step 3.24 i
,f 3 in this procedure.
U ' l l 3.11 IE'incore TEMPS are in I region 1 or 2, j 1818 maintain: Full HPI flow, l Full LPI flow if i-available, 0TSGs at 95% level, ; Rt,.i PRESS < 2300 psig, l OTSG Tsat 100*F below Tsat for existing RCS PRESS. i 1 l EP-290 REV 10 PAGE 17 of 33 ICC . ..
p E - cocooceeooooecocooooooooooooooooooooooo,oeooooooooooeooooooooo.........
-CAUTION 1E EFP-1 is HQI available, - , /~')N
( AND EFP-2 is WI on AS, _ lHEN maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2.
.1 3.6 IE BWST level reaches 4 ft, M:
I 1. Establish LPI suction from BWST,
- 2. Establish HPI suction from LPI,
- 3. Energize DHV-3.
37 If BWST level reaches 2.5 ft, luEN: o SelectBhcontrolvalvesto" LOCAL",
!rv ), o Establish LPI suction from RB sump, ,
o Close Na0H tank outlet valves. 3.9 If incore TEMPS increase to region 3, IBEH GO TO Step 3.15. 3.10 if incore TEMPS increase to region.4, IHEN GO TO Step 3.24.
~~ .
A s/ EP-290 REV 10 PAGE 18 of 33 ICC --
7.; 3.0 F0LLOW-UP ACTIONS (CONT'D) 1 ['"} ACTIONS DETAILS 3.12 1E incore TEMPS enters region 1,
&NQ RCPs are running, '
1818 establish 1 ' RCP/ loop operating. 3.13 ___ Maintain full HPI Adequate Subcooling Margin flow until adequate subcooling margin is RCS PRESS MARGIN established.
> 1500 psig 2 20*F s 1500 psig 1 S0'F HQ1f!
If incore TEMPS have been in region 3, 1818 high point vents should remain open until adequate subcooling r- s marain or DHR is established. () 3.14 WBfB adequate subcooling margin is established, IEEN: . I ___ Ensure all high point Ensure closed: vents are closed,
- RCV-157 RCV-158 2 GO TO AP-380, ES Actuation, beginning RCV-159 RCV-160 with step 3.3.
RCV-163 ___ RCV-164. 7-g .
\- / EP-290 REV 10 PAGE 19 of 33 ICC ..
(, .
] ,
.' cococcococooococccescoccecoccococococcocococococo****ce****************
CAUTION ex Jf EFP-1 is HQI available,
)
AND EFP-2 is HQI on AS, IHEN maintain OTSG PRESS > 100 psig, to ensure availability of EFP-2. I 3.6 lE BWST 1evel reaches 4 ft,
'IBEN:
- 1. Establish LPI suction from BWST,
- 2. Establish HPI suction from LPI,
- 3. Energize DHV 3. I i
3.7 If BWST level reaches 2.5 ft, ! IEEB: l Select BS control valves to " LOCAL", o o Establish LPI suction from R'B sump, [~'Jl o Close Na0H tank outlet valves. l e 3.10 lE incore TEMPS increase to region 4, IHEN Go TO Step 3.24. !
, -~\ __ . \m .) EP-290 REV 10 PAGE 20 of 33 ICC ,,
/,
3.0 FOLLOW-UP ACTIONS (CONT'D)
^
) EJ.LQM DETAILS
/ .
Ha. tat The following steps are for incore TEMPS in region 3. 3.15 J.E RCPs are available, o RCPs are available when RCP IllEB start 1 RCP/ loop start permissives are met, A E manually control OTSG levels at 95%. o Select all 4 EFIC control valves to manual and control level at 95%. 3.16 Maintain OTSG Tsat 100*F Lower OTSG PRESS using TBVs below Tsat for existing or ADVs. RC PRESS until OTSG Heat i removal is established. p 3.17 Open all high point vents. Open: RCV-157 RCV-158 _,_ RCV-159 RCV-160 RCV-163 RCV-164. 3.18 Notify Chemistry to begin Notify Chemistry to refer to I faonitoring RB atmosphere EM-308, Post Accident Sampling ! H2 level, of the RB Atmosphere. i el
.(
l= 1 l n t U EP-290 REV 10 PAGE 21 of 33 100 -- l L ,
(~ l' , * { L. . **** zcccccc. :ccecococcoooecocecoc cco:xecoce.ooooooooooooooooooooooo . f&llD!i ! 1E EFP 1 is tlQI available. r ). ( r>' atiD EFP 2 is 1f01 on AS, It![tf maintain OiSG PRESS > 100 psig, to ensure availability of EFP-2. , l i 3.6 IE BWST 1evel reaches 4 ft, . Ifilli: ,
, 1. Establish LPI suction from BWST, !
- 2. Establish HPI suction from LPI, '
- 3. Energiza DHV-3.
i
~
3.7 If BWST level reaches 2.5 ft, l
- g. >
o Select BS control valves to " LOCAL", j
'^ o Establish LPI suction from RB sump, - (V t
o Close NaOH tank outlet valves. - 3.10 if incore TEMPS increase to region 4, i Il!1tf GO TO Step 3.24. , i
*l i
- l. ) EP-290 REV 10 PAGE 22 of 33 ICC ,,
! . l
, 3.0 FOLLOW-UP ACTIONS (CONT')J r
- x. ACTIONS DETAILS LJ -
6 3.19 Determine if OTSG heat Indications of heat ren val I removal is established, are: .l
)
o OTSG remain pressurized 3 while being steamed. - 1 o incores lower when OTSG < PRESS is lowered. i
- t. [
3.20 E OTSG heat removal is HQI established, ; M open PORV , MD inaintain OTSG T ,at -l 100*F below RCS Tsat. ; t 3.21 E OTSG heat removal is Regulate RCS PRESS using PORV. i established, - M regulate RCS PRESS at I 25 to 50 psig above (m ' OTSG PRESS. ,, I t 3.22 H RCS PRESS and TEMP 3 remain in Region 3 - l M maintain: 1 RCP/ loop operating, All high point vents open, l H OTSG heat removal exists, ! l' M maintain RCS PRESS : !
- 25 to 50 psig above l OTSG PRESS, i E OTSG heat removal does f l 801 exist, .
l M maintain PORV open, , l MQ maintain OTSG Tsat ' 100*F below RCS Tsat. d , EP-290 REV 10 PAGE 23 of 33 ICC ,, I -- ._ . _ _ _
I - i cecoccocesco:..coocococcccococooocooocoeceoccoooooooooooooooooooooooooo I
, CAUTIDB I \; ' 1E EFP 1 is NQI available. l
,i'. AND EFP-2 is HQI on AS, . , ld[8 maintain OTSG PRESS > 100 psig, ! to.....sure en availability of EFP-2. i
.. ****4.......**** ***** .......******..****.....******* .... *** ,
I 3.6 1E BWST level reaches 4 ft, IBEN:
- 1. Establish LPI suction from BWST,
- 2. Establish HPI suction from LPI, ;
- 3. Energize DHV-3. i L
'\
3.7 IE BWST level reaches 2.5 ft. IES: o Select BS control valves to " LOCAL", I,o) _, o Establish LPI suction from RB sump, o Close N:0H tank outlet valves. l
,N J '\' ') CP 290 REV 10 PAGE 24 of 33 ICC --
1 l
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3.0 F0LLOW-UP ACTIONS (CONT'D) i . ( ACTIONS DETAILS K/ ')- . . dnit if subcooled Nat Circ is established, ., lH[H the PZR vents should be used to depressurize the RCS to ensure a slow rate of depressurization, 3.23 If incore TEMPS enter See Enclosure 1 for ICC regions. region 2 M GO TO Step 3.11 in this proccdure, Nnit , The following steps are for incore TEMPS in region 4. 3.24 1[ incore TEMPS enter Ensure Open: (~1 region 4, (' IBIN ensure PORV is open, RCV 10 RCV-11 . ANQ all RCS high point vents are oper.. RCV 157 RCV 158 RCV 159 RCV-160 . RCV 163 RCV-164. 3.25 If RCP power is available, Bypass start permissives using lHEU bypass RCP start key 36 in the SSOD key locker, permissives, AND start all RCPs. 3.26 Manually control OTSG Select all 4 EFIC control levels at 95%. valves to manual. *: 7- . t
' EP-290 REV 10 PAGE 25 of 33 ICC --
e - . 3 c; :ee :cee:3:cce:23ece co:ce33eo eo3cceoooco3o3o33 ecee 333333333eco,co, . CAUTION , l t if EfP-1 is NQI available. !
\s_ ! AND EFP 2 is NOI on AS, .
1815 maintain OTSG PRESS > 100 psig, to ensure availability of EfP 2. ;
**********************..***...********....*****......******............ .l L
t 3.6 If BWST level reaches 4 ft, IBIH: :
- 1. Establish LPI suction from BWST, ;
- 2. Establish HPI suction from LPI, I r
- 3. Energize DHV-3. .
r 3.7 1[ BWST level reaches 2.5 ft, IHL8: o Select BS control valves to " LOCAL", im (s_- ) o Establish LPI suction from RB sump, , o Close NaOH tank outlet valves. l l i l s 1 1 x- EP-290 REV 10 PAGE 26 of 33 ICC ..
O e 30 FDLI0W UP ACTIONS (CONT'D) : 0 l ACTIONS DETAILS '
~_-
3.27 Lower 015G PRESS to Ensure open: l Atmospheric PRESS.
'i o TBVs
~\
o ADVs t r Matt CF1 and LPI flows may be cyclic at first, due to water flashing to steam when it contacts the dry core. 3.28 ~~~ Continue to lower RCS Ensure open: PRESS to allow CFT and LPI to restore core cooling. RCV-10 RCV 11 RCV 157 RCV-158 RCV 159 RCV 160
^'T RCV 163 RCV-164. -(O _.
( 3.29 ___ WHL8 incore TEMPS become saturated, IBM reduce operating RCPs to 1/ loop. i e S* rw (_)g EP-290 REV 10 PAGE 27 of 33 100 ,,
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.. i
, CAUTION l
)
11 EfP-1 is HQI available, I AND [fP 2 is NQI on AS. l 18L8 maintain 01SG PRESS > 100 psig, i to ensure availability of ETP 2, ; 3,6 If BWST level reaches 4 ft. I IBEN:
- 1. Establish LP! suction frow BWST,
- 2. Establish HPI suction from LPI,
- 3. Energize DHV 3.
3,7 1E BWST level reaches 2.5 ft. E: Q o Select BS control valves to " LOCK , ( ,) o Establish LPI suction from RB sump, o Close NaOH tank outlet valves, EP-290 REV 10 PAGE 28 of 33 100 *-
r o C j 3.0 FOLLOW UP ACTIONS (CONT'D) i- ! i ') ACTIONS DETAILS i i LJ
. \
l
. 3,30 1E RCS PRESS is s 150 psig, o Close: l ItiEN close all RCS high 'l point vents, RCV-157 RCV-158 ..
AND maintain RCS PRESS s 150 psig. RCV 159 RCV-160
.[ ,
RCV 163 RCV 164. l 0 Maintain RCS PRESS s 150 - psig by opening and closing : the PORV. i 1E PORV fails to close, ; E close RCV II, , AMQ maintain RCS PRESS ' using PZR vents. , i 3.31 Maintain OTSGs at atmospheric PRESS, and at 95% level.
,- m i
3.32 F_ DEN LPI flow is established [ at 2 1000 gpm/ injection line ; for 20 min, . :
.RLEN: l Stop all RCPs, Isolate CFTs, Close CFV-5 and CFV 6.
Select PORV to '
" LOW RANGE", L Stop all HPl. Stop all MVPs. !
Close HPl valves: " MUV-23 MVV-24 *i MVV 25 MUV 26. f . i EP-290 REV 10 PAGE 29 of 33 ICC --
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r-3.0 F0LLOW UP ACTIONS (CONT'D) (}
<_ i ACTIONS DETAILS CAUTION Do not establish a flow path in any system isolated by ES without a
.. . * * * *prior
* * *
- review
* * * * . . of the* *potential
. . ...* * * * . . . . *release
*. .. . . . . .of. . . . . . .ra d i o a c t i v e g a s o r l i q u i d .
3.33 GO TO OP-404. DHR System. Section 4.13, for long term core cooling guidance. f C t r 8 i EP 290 REV 10 PAGE 31 of 33 100 --
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Enclosure 1 Inadequate Core Cooling Regions based on incore TEMPS O . 2600 r ; 2400 Saturation Curve 2200 2000 I REGION j 1 T-clad > 1400 / i 1800
~
REGION 2 0 1800 r E
'400 j 7
$ REGION )
3
/T-clad > 1800 ,
;200 ;
j I 1000 / . l i { ; 800
/ -
[ l REGION i 4 A 600 ( , , 200
/ / #
/ .
400 800 800 1000 1200 , INCORE TEMP (e y) EP 290 REV 10 PAGE 33 of 33 ICC ..
- . - _ _ _ _ _ - _ _ _ ._ ___ ______ - -}}