ML17262A890: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(StriderTol Bot change)
 
(One intermediate revision by the same user not shown)
Line 2: Line 2:
| number = ML17262A890
| number = ML17262A890
| issue date = 05/06/1992
| issue date = 05/06/1992
| title = Rev 9 to EOP ES-1.2, Post-LOCA Cooldown & Depressurization.
| title = Rev 9 to EOP ES-1.2, Post-LOCA Cooldown & Depressurization
| author name =  
| author name =  
| author affiliation = ROCHESTER GAS & ELECTRIC CORP.
| author affiliation = ROCHESTER GAS & ELECTRIC CORP.
Line 18: Line 18:
=Text=
=Text=
{{#Wiki_filter:EOP:
{{#Wiki_filter:EOP:
REV: 9 ES-1.2         POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 1 of 23 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EF CT VE DATE CATEGORY 1.0 REVIEWED BY:
ES-1.2 POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
9206160397 920605 PDR ADOCK 05000244 P               PDR
9 PAGE 1 of 23 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EF CT VE DATE CATEGORY 1.0 REVIEWED BY:
9206160397 920605 PDR ADOCK 05000244 P
PDR


t '
t '
went'i I"         r
went'i I"
r


EOP             TITLE:
EOP ES-1 '
REV: 9 ES-1 '         POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 2 of 23 A. PURPOSE     This procedure provides actions to cool down and depressurize     the RCS to cold shutdown conditions following     a loss of reactor coolant inventory.
TITLE:
B. ENTRY CONDITIONS/SYMPTOMS 1~   ENTRY CONDITIONS This     procedure is entered from:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
E 1g    LOSS OF REACTOR OR SECONDARY COOLANT f when RCS     pressure is greater than the shutoff head pressure of the RHR pumps.
9 PAGE 2 of 23 A.
PURPOSE This procedure provides actions to cool down and depressurize the RCS to cold shutdown conditions following a loss of reactor coolant inventory.
B.
ENTRY CONDITIONS/SYMPTOMS 1 ~
ENTRY CONDITIONS This procedure is entered from:
E 1 g LOSS OF REACTOR OR SECONDARY COOLANTf when RCS pressure is greater than the shutoff head pressure of the RHR pumps.


6 I
6 I
    <<la+
<<la+
  ~
~
 
EOP'S-1 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
9 PAGE 3 of 23 STEP ACTION/EXPECTED RESPONSE


TITLE:
===RESPONSE===
EOP'S-1                                                                      REV: 9
NOT OBTAINED CAUTION IF RWST LEVEL DECREASES TO LESS THAN 28$,
        '        POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 3  of 23 STEP      ACTION/EXPECTED RESPONSE              RESPONSE  NOT OBTAINED
THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, STEP 1.
  *****************************************
NOTE:
CAUTION IF RWST LEVEL DECREASES TO LESS THAN 28$ , THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, STEP 1.
o Foldout page should be open and monitored periodically.
  *****************************************
o Adverse CNMT values should be used whenever CNMT pressure fs greater than 4 psig or CNMT radiation is greater than 10+0~ R/hr.
NOTE:   o Foldout page should be open and monitored periodically.
1 Verify All AC Busses ENERGIZED BY OFFSITE POWER o
o Adverse CNMT values should be used whenever CNMT pressure fs greater than 4 psig or CNMT radiation is greater than 10+0~ R/hr.
Normal feed breakers to all 480 volt busses CLOSED o
1 Verify All AC Busses                     Perform the following:
480 bus voltage GREATER THAN 420 VOLTS o
ENERGIZED BY OFFSITE POWER
Emergency D/G output breakers OPEN Perform the following:
: a. IF any   AC emergency bus normal o  Normal feed breakers to  all 480          feed breaker open, THEN ensure volt busses - CLOSED                      associated D/G breaker closed.
: a. IF any AC emergency bus normal feed breaker
o  480 bus voltage - GREATER THAN        b. Perform the following, as 420 VOLTS                                  necessary:
: open, THEN ensure associated D/G breaker closed.
o  Emergency D/G output breakers              1) Close non-safeguards   bus tie OPEN                                          breakers:
: b. Perform the following, as necessary:
                                                          ~ Bus 13 to Bus 14 tie
: 1) Close non-safeguards bus tie breakers:
                                                          ~ Bus 15 to Bus 16 tie
~ Bus 13 to Bus 14 tie
: 2) Place the   following pumps in PULL STOP' EH pumps
~ Bus 15 to Bus 16 tie
                                                          ~ Turning gear oil pump
: 2) Place the following pumps in PULL STOP' EH pumps
                                                          ~ HP seal oil backup pump
~ Turning gear oil pump
~ HP seal oil backup pump
: 3) Restore power to MCCs.
: 3) Restore power to MCCs.
                                                          ~ A from Bus   13
~ A from Bus 13
                                                          ~ B from Bus   15
~
                                                          ~ E from Bus   15
B from Bus 15
                                                          ~ F from Bus   15
~
: 4) WHEN bus 15 restored, THEN reset control room lighting.
E from Bus 15
~ F from Bus 15 4)
WHEN bus 15 restored, THEN reset control room lighting.
: 5) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.
: 5) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.
: c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.l, RESTORATION   OF OFFSITE POWER).
: c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.l, RESTORATION OF OFFSITE POWER).


'\
'\\
4'.%
4'.%
k4
k4
                \
\\
Q   ~
Q ~
        +gal h t
+gal h
t
 
EOP:
ES-1
~ 2 T!TLF.:
POST LOCA COOZDOWN AND DEPRESSURIZATION REV:
9 PAGE 4 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:              T!TLF.:
===RESPONSE===
REV: 9 ES-1    ~ 2        POST LOCA COOZDOWN AND DEPRESSURIZATION PAGE 4 of 23 STEP        ACTION/EXPECTED RESPONSE                RESPONSE NOT OBTAINED
NOT OBTAINED
  * * * * * *
* * * * * *
* 4'         ********************************
* 4' CAUTION RCS PRESSURE SHOULD BE MONITORED.
CAUTION RCS   PRESSURE   SHOULD BE MONITORED.     IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG [465 PSIG ADVERSE CNMT), THE RHR PUMPS MUST BE MANUALLY RESTARTED TO SUPPLY WATER TO THE RCS.
IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG
2   Check Stopped:
[465 PSIG ADVERSE CNMT), THE RHR PUMPS MUST BE MANUALLYRESTARTED TO SUPPLY WATER TO THE RCS.
If RHR     Pumps   Should Be
2 Check If RHR Pumps Should Be Stopped:
: a. Check   RCS   pressure:                   a. Go to Step 3.
a.
: 1) Pressure   - GREATER THAN 250 psig (465 psig adverse CNMT]
Check RCS pressure:
: 2) Pressure   - STABLE OR INCREASING
: 1) Pressure
: b. Stop   RHR pumps     and place AUTO
- GREATER THAN 250 psig (465 psig adverse CNMT]
: 2) Pressure
- STABLE OR INCREASING a.
Go to Step 3.
: b. Stop RHR pumps and place AUTO


r.
r.
~ a '
~a


EOP:              TITLE:
EOP:
REV: 9 ES-1   '         POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 5   of 23 STEP       ACTION/EXPECTED RESPONSE           RESPONSE NOT OBTAINED 3 Establish       75 GPM   Charging Flow:
ES-1 '
: a. Charging pumps - ANY       RUNNING   a. Perform the following:
TITLE:
: 1) IF CCW flow is lost to any RCP thermal barrier OR any RCP &#xb9;1 seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally isolate seal injection to affected RCP:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
                                                      ~ V-300A   for RCP A
9 PAGE 5 of 23 STEP ACTION/EXPECTED RESPONSE
                                                      ~ V-300B   for RCP B
 
: 2) Ensure HCV-142 open, demand at  0%.
===RESPONSE===
NOT OBTAINED 3 Establish 75 GPM Charging Flow:
: a. Charging pumps
- ANY RUNNING a.
Perform the following:
: 1) IF CCW flow is lost to any RCP thermal barrier OR any RCP &#xb9;1 seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally isolate seal injection to affected RCP:
~ V-300A for RCP A
~ V-300B for RCP B
t
t
: b. Align charging     pump suction to b. IF LCV-112B can NOT be opened, RWST:                                  THEN perform the following:
: b. Align charging pump suction to RWST:
o  LCV-112B - OPEN                      1) Verify charging     pump A NOT running and place in     PULL o  LCV-112C - CLOSED                      STOP.
o LCV-112B -
: 2) Dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging   pump room).
OPEN o
: 3) WHEN V-358 open,   THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).
LCV-112C -
      .c. Start charging      pumps as necessary    (75 kw each) and establish    75 gpm total charging flow
CLOSED
            ~ Charging line flow
: 2) Ensure HCV-142 open, demand at 0%.
            ~ Seal injection flow
: b. IF LCV-112B can NOT be opened, THEN perform the following:
: 1) Verify charging pump A NOT running and place in PULL STOP.
.c. Start charging pumps as necessary (75 kw each) and establish 75 gpm total charging flow
: 2) Dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).
3)
WHEN V-358 open, THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).
~ Charging line flow
~ Seal injection flow


1~
1~
4E
4E


EOP:              TITLE:
EOP:
REV: 9 ES-1   '         POST LOCA C'OQLDQWN AND DEPRESSURIZATION PAGE 6 of   23 STEP       ACTION/EXPECTED RESPONSE                 RESPONSE   NOT OBTAINED 4 Establish Condenser Steam Dump Pressure Control:
ES-1 '
: a. Verify condenser available:               a. Place S/G   ARV controllers in AUTO at desired pressure and   go o  Any MSIV -    OPEN                        to Step 5.
TITLE:
o  Annunciator G-15,    STEAM DUMP LIT
POST LOCA C'OQLDQWN AND DEPRESSURIZATION REV:
: b. Adjust condenser steam       dump controller   HC-484 to desired pressure   and verify in AUTO
9 PAGE 6 of 23 STEP ACTION/EXPECTED RESPONSE
: c. Place steam dump mode selector switch to MANUAL
 
  *****************************************
===RESPONSE===
CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS   WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
NOT OBTAINED 4 Establish Condenser Steam Dump Pressure Control:
NOTE:     TDAFW pump   flow control valves   fail open on loss of IA.
: a. Verify condenser available:
5 Check   Intact     S/G   Levels:
o Any MSIV -
: a. Narrow range     level   - GREATER         a. Maintain    total  feed flow greater THAN 5%   [25% adverse   CNMT]               than 200   gpm until narrow range level greater than 5% [25%
OPEN o
Annunciator G-15, STEAM DUMP LIT
: a. Place S/G ARV controllers in AUTO at desired pressure and go to Step 5.
: b. Adjust condenser steam dump controller HC-484 to desired pressure and verify in AUTO
: c. Place steam dump mode selector switch to MANUAL CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
NOTE:
TDAFW pump flow control valves fail open on loss of IA.
5 Check Intact S/G Levels:
: a. Narrow range level GREATER THAN 5%
[25% adverse CNMT]
: b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT] and 50%
: a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5%
[25%
adverse CNMT] in at least one S/G.
adverse CNMT] in at least one S/G.
: b. Control feed flow to maintain              b. IF narrow range level in any     S/G narrow range level between 17%                continues to increase in an
: b. IF narrow range level in any S/G continues to increase in an uncontrolled manner, THEN go to E-3, STEAM GENERATOR TUBE
[25% adverse CNMT] and 50%                    uncontrolled manner,   THEN go to E-3, STEAM GENERATOR TUBE RUPTURE, Step   l.
: RUPTURE, Step l.


p lO e mes
p lO e mes


EOP:
EOP:
REV: 9 ES-1.2           POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 7 of 23 STEP       ACTION/EXPECTED RESPONSE           RESPONSE NOT OBTAINED NOTE:   Shutdown margin should be monitored during   RCS cooldown (Refer to Figure   SDM).
ES-1.2 POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
6   Initiate   RCS   Cooldown To Cold Shutdown:
9 PAGE 7 of 23 STEP ACTION/EXPECTED RESPONSE
: a. Establish and maintain cooldown rate in   RCS cold legs - LESS THAN 100'F/HR
 
: b. Use RHR system if in service
===RESPONSE===
: c. Dump steam to condenser   from     c. Manually or locally dump steam intact S/G(s)                            using intact S/Gs ARV.
NOT OBTAINED NOTE:
7 Check RCS Subcooling Based On           Manually operate SI pumps as Core Exit T/Cs GREATER THAN           necessary and go to Step 19.
Shutdown margin should be monitored during RCS cooldown (Refer to Figure SDM).
O'F USING FIGURE MIN SUBCOOLING 8 Check SI and       RHR Pump   Status:   Go  to Step 15.
6 Initiate RCS Cooldown To Cold Shutdown:
o SI pumps -   ANY RUNNING
: a. Establish and maintain cooldown rate in RCS cold legs LESS THAN 100'F/HR b.
                      -OR-o RHR pumps   - ANY RUNNING IN INJECTION   MODE 9 Place   PRZR   Heater Switches In The Following Positions:
Use RHR system if in service c.
o PRZR heater control group     - PULL STOP o PRZR heater backup group     - OFF
Dump steam to condenser from intact S/G(s)
: c. Manually or locally dump steam using intact S/Gs ARV.
7 Check RCS Subcooling Based On Core Exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING Manually operate SI pumps as necessary and go to Step 19.
8 Check SI and RHR Pump Status:
o SI pumps
- ANY RUNNING
-OR-Go to Step 15.
o RHR pumps
- ANY RUNNING IN INJECTION MODE 9
Place PRZR Heater Switches In The Following Positions:
o PRZR heater control group PULL STOP o
PRZR heater backup group
- OFF
: c. t S
: c. t S
~ Ii 0>)'t~+
~Ii 0>)'t~+


EOP:            TITLE:
EOP:
REV' ES-1 '           POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE, 8 of 23 STEP     ACTION/EXPECTED RESPONSE                 RESPONSE NOT OBTAINED
ES-1 '
  *****************************************
TITLE:
CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.         THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE, 8 of 23 STEP ACTION/EXPECTED RESPONSE
  * * * * * * * * * * * * * * * * * *
 
* 6 * * * * * * * * * * *.IL'           ********
===RESPONSE===
NOTE:   o   WHEN using   a PRZR PORV, THEN select   one with an operable block valve.
NOT OBTAINED CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.
o   If auxiliary spray     is in use, spray flow may   be increased by closing normal charging valve     AOV-294 and normal PRZR spray valves.
THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
10   Depressurize       RCS To Refill PRZR
* * * * * * * * * * * * * * * * * *
: a. Depressurize using normal     PRZR       a. Depressurize   using one PRZR spray  if  available                          PORV. IF IA NOT available, THEN refer to Attachment N2 PORVS.
* 6 * * * * * * * * * * *.IL' NOTE:
IF no PORV available, THEN use auxiliary spray valve   (AOV-296).
o WHEN using a PRZR PORV, THEN select one with an operable block valve.
: b. PRZR  level  - GREATER THAN 13%          b. Continue with Step 11. WHEN
o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
[40%  adverse  CNMT]                          level greater than 13% [40%
10 Depressurize RCS To Refill PRZR
: a. Depressurize using normal PRZR spray if available
: a. Depressurize using one PRZR PORV.
IF IA NOT available, THEN refer to Attachment N2 PORVS.
b.
PRZR level GREATER THAN 13%
[40% adverse CNMT]
IF no PORV available, THEN use auxiliary spray valve (AOV-296).
: b. Continue with Step 11.
WHEN level greater than 13%
[40%
adverse CNMT), THEN stop RCS depressurization.
adverse CNMT), THEN stop RCS depressurization.
: c. Stop RCS   depressurization
: c. Stop RCS depressurization
 
CA
 
EOP:
ES-1-2 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9
PAGE 9 of 23 STEP ACTION/EXPECTED RESPONSE


CA EOP:              TITLE:
===RESPONSE===
REV  9 ES-1-2            POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 9  of 23 STEP      ACTION/EXPECTED RESPONSE                RESPONSE  NOT OBTAINED
NOT OBTAINED CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
  *****************************************
11 Check If An RCP Should Be Started:
CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
: a. Both RCPs STOPPED b.
11   Check Started:
RCS subcooling based on core exit T/Cs
If An RCP       Should Be
- GREATER THAN O' USING FIGURE MIN SUBCOOLING a.
: a. Both   RCPs   - STOPPED                    a. Stop all but one   RCP and go to Step 12.
Stop all but one RCP and go to Step 12.
: b. RCS  subcooling based on core            b. Go to Step 19.
b.
exit  T/Cs -    GREATER THAN O' USING    FIGURE  MIN SUBCOOLING
Go to Step 19.
: c. PRZR   level   - GREATER THAN 13%         c. Return to Step 10.
c.
[40% adverse     CNMT]
PRZR level GREATER THAN 13%
: d. Try to   start   an RCP                 d. IF IA to CNMT available, THEN ensure at least one control rod
[40% adverse CNMT]
: 1)  Establish conditions for                  .shroud fan running (45 kw each).
: d. Try to start an RCP
starting    an  RCP o    Bus  llA or llB energized o    Refer to Attachment  RCP START
: 1) Establish conditions for starting an RCP o
: 2) Start   one RCP
Bus llA or llB energized o
Refer to Attachment RCP START
: c. Return to Step 10.
: d. IF IA to CNMT available, THEN ensure at least one control rod
.shroud fan running (45 kw each).
: 2) Start one RCP


~A
~A
  ~ ~I r
~ ~ I r
 
EOP:
ES-1-2 TIZLE0 POST
: LOCP, COOLDOWN AND DEPRESSURIZATION REV:
9 PAGE 10 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:            TIZLE0 REV: 9 ES-1-2            POST LOCP, COOLDOWN AND DEPRESSURIZATION PAGE 10  of 23 STEP      ACTION/EXPECTED RESPONSE          RESPONSE NOT OBTAINED 12   Check Pumps If One Should Of Three SI Be Stopped:
===RESPONSE===
: a. Three SI pumps -,RUNNING           a. Go  to Step 13.
NOT OBTAINED 12 Check If One Of Three SI Pumps Should Be Stopped:
: b. RCS subcooling based on core       b. IF  RCS hot leg temperatures exit T/Cs - GREATER THAN-35'F          greater than 325'F [270'F
: a. Three SI pumps
[90'F adverse CNMT] USING FIGURE       adverse CNMT] OR IF RHR normal MIN SUBCOOLING                          cooling in service, THEN go to Step 19.
-,RUNNING b.
RCS subcooling based on core exit T/Cs GREATER THAN-35'F
[90'F adverse CNMT] USING FIGURE MIN SUBCOOLING c.
Check PRZR level -
GREATER THAN 13%
[40% adverse CNMT]
: d. Stop one SI pump a.
Go to Step 13.
: b. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 12c. IF no RHR pump can be operated in injection mode, THEN go to Step 19.
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 12c.
: c. Check  PRZR level - GREATER THAN  c. Do NOT stop SI pump. Return to 13%  [40% adverse  CNMT]                Step 10.
IF no RHR pump can be operated in injection mode, THEN go to Step 19.
: d. Stop one SI pump
c.
Do NOT stop SI pump.
Return to Step 10.


      %'
I
I
~ l VE
~ l VE


EOP:               TITLE REV: 9 ES-1.2                     LOCA COOLDOWN AND DEPRESSURIZATION PAGE 11   of 23 STEP       ,
EOP:
ACTION/EXPECTED RESPONSE             RESPONSE NOT OBTAINED 13   Check     If   One Of Two SI Pumps Should Be Stopped:
ES-1.2 TITLE LOCA COOLDOWN AND DEPRESSURIZATION REV:
: a. Two SI pumps -       RUNNING               a. Go  to Step 14.
9 PAGE 11 of 23 STEP
, ACTION/EXPECTED RESPONSE
 
===RESPONSE===
NOT OBTAINED 13 Check If One Of Two SI Pumps Should Be Stopped:
a.
Two SI pumps
- RUNNING
: b. Determine required RCS subcooling from table:
: b. Determine required RCS subcooling from table:
Charging Pump               RCS Subcooling Criteria Availability NONE                120'F [200'F adverse CNMT]
a.
ONE            115'F [190'F adverse CNMT]
Go to Step 14.
Charging Pump Availability NONE ONE THREE RCS Subcooling Criteria 120'F [200'F adverse CNMT]
115'F [190'F adverse CNMT]
105'F [180'F adverse CNMT]
105'F [180'F adverse CNMT]
THREE              100'F [175'F adverse CNMT]
100'F [175'F adverse CNMT]
: c. RCS   subcooling based on core           c. IF RCS hot leg temperatures exit    T/Cs - GREATER THAN VALUE            greater than 325'F [270'F FROM TABLE ABOVE USING FIGURE                adverse CNMT] OR IF RHR normal MIN SUBCOOLING                                cooling in service, THEN go to Step 19.
c.
RCS subcooling based on core exit T/Cs GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING d.
PRZR level
- GREATER THAN 13%
[40% adverse CNMT) e.
Stop one SI pump
: c. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 13d. IF no RHR pump can be operated   in injection mode, THEN go   to Step 19.
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 13d.
: d. PRZR    level  - GREATER THAN 13%        d. Do NOT stop SI pump. Return to
IF no RHR pump can be operated in injection mode, THEN go to Step 19.
[40%    adverse  CNMT)                      Step 10 '
d.
: e. Stop one SI pump
Do NOT stop SI pump.
Return to Step 10 '


~~c
~~c
    ~ f
~ f
            'I 0 'tF'
'I 0 'tF'
 
EOP:
ES-1.2 TITLE:
LOCA CPPLDOWN AND DEPRESSURIZATION REV:
9 PAGE 12 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:              TITLE:
===RESPONSE===
REV: 9 ES-1.2                  LOCA CPPLDOWN AND DEPRESSURIZATION PAGE 12  of 23 STEP        ACTION/EXPECTED RESPONSE              RESPONSE  NOT OBTAINED 14   Check Be If Last Stopped:
NOT OBTAINED 14 Check If Last SI Pump Should Be Stopped:
SI   Pump Should
a.
: a. One SI pump -   RUNNING                 a. IF any  RHR pump running in injection  mode, THEN go to Step 19. IF NOT, THEN go to Step 15.
One SI pump - RUNNING
: b. Determine required RCS subcooling from table:
: b. Determine required RCS subcooling from table:
Charging Pump               RCS Subcooling Criteria Availability NONE              Insufficient subcooling to stop SI pump.
: a. IF any RHR pump running in injection mode, THEN go to Step 19.
ONE            255'F [295'F adverse CNMT]
IF NOT, THEN go to Step 15.
TWO            235'F [285'F adverse CNMT]
Charging Pump Availability NONE ONE TWO THREE RCS Subcooling Criteria Insufficient subcooling to stop SI pump.
THREE            210'F [270'F adverse CNMT]
255'F [295'F adverse CNMT]
: c. RCS subcooling based on core           c. IF   RCS hot leg temperatures exit  T/Cs - GREATER THAN VALUE            greater than 325'F [270'F FROM TABLE ABOVE USING FIGURE                adverse CNMT] OR IF RHR normal MIN SUBCOOLING                              cooling in service, THEN go to Step 19.
235'F [285'F adverse CNMT]
210'F [270'F adverse CNMT]
c.
RCS subcooling based on core exit T/Cs GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING d.
PRZR level GREATER THAN 13%
[40% adverse CNMT]
e.
Stop running SI pump
: c. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 14d. IF no RHR pump can be operated in injection mode, THEN go to Step 19.
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 14d.
: d. PRZR  level  - GREATER THAN 13%        d. Do NOT stop SI pump. Return to
IF no RHR pump can be operated in injection mode, THEN go to Step 19.
[40%  adverse  CNMT]                        Step 10.
d.
: e. Stop running SI pump
Do NOT stop SI pump.
Return to Step 10.


Q>>l 0
Q>>lI l 0
I
I


EOP REV: 9 ES-1.2           POST LOCA COOLDONN AND DEPRESSURIZATION PAGE 13   of 23 STEP       ACTION/EXPECTED RESPONSE               RESPONSE   NOT OBTAINED 15 Check Be If Charging Controlled Flow Should To Maintain PRZR Level:
EOP ES-1.2 POST LOCA COOLDONN AND DEPRESSURIZATION REV:
: a. Check   RHR pumps   - RUNNING IN         a.'Start charging     pump and control INJECTION MODE                              charging   flow to maintain PRZR level and go to Step 16.
9 PAGE 13 of 23 STEP ACTION/EXPECTED RESPONSE
: b. Go  to Step  19
 
  *****************************************
===RESPONSE===
NOT OBTAINED 15 Check If Charging Flow Should Be Controlled To Maintain PRZR Level:
a.
Check RHR pumps
- RUNNING IN INJECTION MODE b.
Go to Step 19 a.'Start charging pump and control charging flow to maintain PRZR level and go to Step 16.
CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
16   Check RCP     Status:
16 Check RCP Status:
: a. RCPs   - AT LEAST ONE RUNNING           a. Perform the following:
a.
: 1) Establish conditions     for starting an RCP:
RCPs
o Verify Bus   11A or llB energized.
- AT LEAST ONE RUNNING a.
o Refer to Attachment     RCP START.
Perform the following:
: 2) Start one RCP.
: 1) Establish conditions for starting an RCP:
IF an RCP can NOT be   started, THEN verify natural circulation (Refer to Attachment NC).
o Verify Bus 11A or llB energized.
IF natural circulation NOT verified, THEN increase dumping steam.
o Refer to Attachment RCP START.
: b. Stop   all but one RCP
: 2) Start one RCP.
IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).
IF natural circulation NOT
: verified, THEN increase dumping steam.
: b. Stop all but one RCP


1p ll i>
1p ll i>
A 41'st:
A 41'st:


T!TLE:
ES-1.2 T!TLE:
REV' ES-1.2            POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 14 of 23 STEP     ACTION/EXPECTED RESPONSE                   RESPONSE NOT OBTAINED
POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE 14 of 23 STEP ACTION/EXPECTED RESPONSE
**********************************        CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.           THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
 
NOTE:   o WHEN   using   a PRZR PORV, THEN select   one with an operable block valve.
===RESPONSE===
o   If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
NOT OBTAINED CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.
17   Depressurize RCS To Minimize RCS Subcooling:
THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
: a. Depressurize     using normal PRZR       a. IF normal spray NOT available, spray    if available                          THEN use one PRZR PORV. IF IA, refer to NOT available, THEN Attachment N2 PORVS.
NOTE:
o WHEN using a PRZR PORV, THEN select one with an operable block valve.
o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
17 Depressurize RCS To Minimize RCS Subcooling:
: a. Depressurize using normal PRZR spray if available
: a. IF normal spray NOT available, THEN use one PRZR PORV.
IF IA, NOT available, THEN refer to Attachment N2 PORVS.
: b. Energize PRZR heaters as necessary
: c. Depressurize RCS until EITHER of the following conditions satisfied:
IF no PRZR PORV available, THEN use auxiliary spray valve (AOV-296).
IF no PRZR PORV available, THEN use auxiliary spray valve (AOV-296).
: b. Energize    PRZR  heaters as necessary
o RCS subcooling based on core exit T/Cs
: c. Depressurize RCS until EITHER of the following conditions satisfied:
- LESS THAN 10'F USING FIGURE MIN SUBCOOLING
o RCS   subcooling based on core exit   T/Cs - LESS THAN 10'F USING FIGURE MIN SUBCOOLING
-OR-o PRZR level GREATER THAN 75%
                      -OR-o PRZR   level   - GREATER THAN 75%
f65% adverse CNMT]
f65%   adverse   CNMT]
 
PIpR"


PI pR"
EOP:
ES-1.2 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9
PAGE 15 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:            TITLE:
===RESPONSE===
REV  9 ES-1.2          POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 15  of 23 STEP      ACTION/EXPECTED RESPONSE        RESPONSE  NOT OBTAINED 18   Verify Adequate       Shutdown Margin
NOT OBTAINED 18 Verify Adequate Shutdown Margin
: a. Direct HP to sample   RCS for boron concentration
: a. Direct HP to sample RCS for boron concentration
: b. Verify boron concentration-       b. Borate as necessary.
: b. Verify boron concentration-GREATER THAN REQUIREMENTS OF FIGURE SDM
GREATER THAN REQUIREMENTS OF FIGURE SDM 19   Verify SI     Flow Not Required:
: b. Borate as necessary.
: a. RCS subcooling based on core     a. Manually operate SI pumps as exit T/Cs -  GREATER THAN O'       .necessary and go to Step 20.
19 Verify SI Flow Not Required:
USING FIGURE MIN SUBCOOLING
a.
: b. PRZR level   - GREATER THAN 5%   b. Manually operate SI pumps as
RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING
[30%  adverse  CNMT)                  necessary and return to Step 10.
: a. Manually operate SI pumps as
.necessary and go to Step 20.
b.
PRZR level
- GREATER THAN 5%
[30% adverse CNMT)
: b. Manually operate SI pumps as necessary and return to Step 10.


I E
I E


EOP:
EOP:
REV    9 ES-1.2           POST 'LOCA COQLDOWN AND DEPRESSURIZATION PAGE 16 of 23 STEP       ACTION/EXPECTED RESPONSE         RESPONSE NOT OBTAINED 20   Check   If SI Isolated:
ES-1.2 POST 'LOCA COQLDOWN AND DEPRESSURIZATION REV 9
ACCUMs   Should Be
PAGE 16 of 23 STEP ACTION/EXPECTED RESPONSE
: a. RCS subcooling based on core     a. IF both RCS hot leg temperatures exit T/Cs - GREATER THAN O'         less than 400'F, THEN go to USING FIGURE MIN SUBCOOLING           Step 20c.
 
IF  NOT, THEN go  to Step 21.
===RESPONSE===
: b. PRZR level - GREATER THAN 5%   b. Return to Step 10.
NOT OBTAINED 20 Check If SI ACCUMs Should Be Isolated:
f308 adverse   CNMT)
a.
RCS subcooling based on core exit T/Cs
- GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
PRZR level GREATER THAN 5%
f308 adverse CNMT)
: c. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves
: c. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves
            ~ MOV-841,   MCC C position 12F
~ MOV-841, MCC C position 12F
            ~ MOV-865,   MCC D position 12C
~ MOV-865, MCC D position 12C
: d. Close SI   ACCUM discharge valves d. Vent any unisolated    ACCUMs:
: d. Close SI ACCUM discharge valves
            ~ ACCUM A, MOV-841                   1) Open vent valves for
~ ACCUM A, MOV-841
            ~ ACCUM B, MOV-865                       unisolated SI ACCUMs.
~ ACCUM B, MOV-865
                                                      ~ ACCUM A, AOV-834A
: a. IF both RCS hot leg temperatures less than 400'F, THEN go to Step 20c.
                                                      ~ ACCUM B, AOV-834B
IF NOT, THEN go to Step 21.
: b. Return to Step 10.
: d. Vent any unisolated ACCUMs:
: 1) Open vent valves for unisolated SI ACCUMs.
: e. Locally reopen breakers for MOV-841 and MOV-865
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
: 2) Open HCV-945.
: 2) Open HCV-945.
: e. Locally reopen breakers    for MOV-841 and MOV-865


4,y 45
4,y 45
'I
'I
    ~ l~
~l~
 
EOP:
ES-1.2 T!TLE:
POST LOCA COOI,DOWN AND DEPRESSURIZATION REV:
9 PAGE 17 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:            T!TLE:
===RESPONSE===
REV: 9 ES-1.2          POST LOCA COOI,DOWN AND DEPRESSURIZATION PAGE 17  of 23 STEP      ACTION/EXPECTED RESPONSE          RESPONSE NOT OBTAINED 21   Check   If Emergency Should Be Stopped:
NOT OBTAINED 21 Check If Emergency D/Gs Should Be Stopped:
D/Gs
: a. Verify AC emergency busses energized by offsite power:
: a. Verify AC   emergency busses     a. Try to restore   offsite power energized by    offsite power:          (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).
o Emergency D/G output breakers OPEN
o   Emergency D/G output breakers OPEN o  AC emergency   bus voltage GREATER THAN   420 VOLTS o AC   emergency bus normal feed breakers -    CLOSED
: a. Try to restore offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).
: b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP) 22   Verify Adequate       SW   Flow To CCW Hx:
o AC emergency bus voltage GREATER THAN 420 VOLTS o
: a. Verify at least     two SW pumps a. Manually   start pumps as power RUNNING                                  supply permits (258 kw per pump). IF less than two SW pumps can be operated, THEN go to Step 23.
AC emergency bus normal feed breakers CLOSED
: b. Verify AUX    BLDG SW  isolation  b. Establish SW to AUX BLDG (Refer valves  - OPEN                        ~
: b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP) 22 Verify Adequate SW Flow To CCW Hx:
to Attachment AUX BLDG SW).
: a. Verify at least two SW pumps RUNNING
          ~ MOV-4615 and MOV-4734
: b. Verify AUX BLDG SW isolation valves OPEN
          ~ MOV-4616 and MOV-4735
~ MOV-4615 and MOV-4734
: c. Verify   CNMT RECIRC   fan       cd   Dispatch AO to locally throttle annunciator C-2,    HIGH                flow to CCW Hx to between TEMPERATURE ALARM - EXTINGUISHED        5000 gpm and 6000 gpm total flow.
~ MOV-4616 and MOV-4735
: a. Manually start pumps as power supply permits (258 kw per pump).
IF less than two SW pumps can be operated, THEN go to Step 23.
: b. Establish SW to AUX BLDG (Refer
~to Attachment AUX BLDG SW).
: c. Verify CNMT RECIRC fan annunciator C-2, HIGH TEMPERATURE ALARM -
EXTINGUISHED cd Dispatch AO to locally throttle flow to CCW Hx to between 5000 gpm and 6000 gpm total flow.


fge
fge
      '
<<I>>
<<I>> $$
4
4
~ g A/KW
~g A/KW


EOP:
EOP:
REV: 9 ES-1.2         POST LOCA CPPLDPWN AND DEPRESSURIZATION PAGE 18 of 23 STEP     ACTION/EXPECTED RESPONSE         RESPONSE NOT OBTAINED 23   Check RCP Cooling                     Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
ES-1.2 POST LOCA CPPLDPWN AND DEPRESSURIZATION REV:
: a. Check  CCW  to  RCPs o Annunciator A-7,   RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o Annunciator A-15,   RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED
9 PAGE 18 of 23 STEP ACTION/EXPECTED RESPONSE
: b. Check RCP seal injection o Labyrinth seal D/Ps   - GREATER THAN 15 INCHES WATER
 
                        -OR-o RCP seal injection flow to each RCP   - GREATER THAN 6 GPM
===RESPONSE===
NOT OBTAINED 23 Check RCP Cooling a.
Check CCW to RCPs Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o
Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED b.
Check RCP seal injection o
Labyrinth seal D/Ps GREATER THAN 15 INCHES WATER
-OR-o RCP seal injection flow to each RCP - GREATER THAN 6 GPM


I EOP:              TITLE:
I
REV: 9 ES-1   '                 LOCA COOLDOWN AND DEPRESSURIZATION PAGE 19   of 23 STEP       ACTION/EXPECTED RESPONSE           RESPONSE NOT OBTAINED 24   Check     If Seal Return Flow Should Be Established:
 
: a. Verify instrument     bus D-         a. Restore power to instrument bus ENERGIZED                               D from MCC B or MCC A (maintenance supply).
EOP:
: b. Verify RCP &#xb9;1 seal outlet             b. Go  to Step 25.
ES-1 '
temperature - LESS THAN 235'F
TITLE:
: c. Verify   RCP seal outlet valves     c. Manually open valves as OPEN                                     necessary.
LOCA COOLDOWN AND DEPRESSURIZATION REV:
            ~ AOV-270A
9 PAGE 19 of 23 STEP ACTION/EXPECTED RESPONSE
            ~ ,AOV-270B
 
: d. Reset both     trains of'XY relays for RCP seal return isolation valve   MOV-313
===RESPONSE===
: e. Open   RCP   seal return isolation   e. Perform the following:
NOT OBTAINED 24 Check If Seal Return Flow Should Be Established:
valve  MOV-313
: a. Verify instrument bus D-ENERGIZED
: b. Verify RCP &#xb9;1 seal outlet temperature LESS THAN 235'F
: c. Verify RCP seal outlet valves OPEN
~ AOV-270A
~,AOV-270B
: a. Restore power to instrument bus D from MCC B or MCC A (maintenance supply).
b.
Go to Step 25.
: c. Manually open valves as necessary.
: d. Reset both trains of'XY relays for RCP seal return isolation valve MOV-313 e.
Open RCP seal return isolation valve MOV-313
: f. Verify RCP &#xb9;1 seal leakoff flow LESS THAN 5.5 GPM
: g. Verify RCP &#xb9;1 seal leakoff flow GREATER THAN 0.25 GPM e.
Perform the following:
: 1) Place MOV-313 switch to OPEN.
: 1) Place MOV-313 switch to OPEN.
: 2) Dispatch   AO with key to RWST gate to locally open   MOV-313.
: 2) Dispatch AO with key to RWST gate to locally open MOV-313.
: f. Verify RCP    &#xb9;1 seal leakoff flow  f. IF any RCP seal leakoff flow LESS THAN  5.5  GPM                  greater than 5.5 gpm, THEN:
: f. IF any RCP seal leakoff flow greater than 5.5
o   Close the affected RCP seal discharge valve
: gpm, THEN:
                                                        ~ RCP A, AOV-270A
o Close the affected RCP seal discharge valve
                                                        ~ RCP B, AOV-270B o Trip the affected   RCP IF both RCP seal discharge valves are shut, THEN go to Step 25.
~ RCP A, AOV-270A
: g. Verify RCP &#xb9;1 seal leakoff flow      g. Refer to AP-RCP.1,   RCP SEAL GREATER THAN    0.25 GPM              MALFUNCTIONS
~ RCP B, AOV-270B o
Trip the affected RCP IF both RCP seal discharge valves are shut, THEN go to Step 25.
: g. Refer to AP-RCP.1, RCP SEAL MALFUNCTIONS


EOP:              TITLE:
EOP:
REV: 9 ES-1   ~ 2         POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 20   of 23 STEP         ACTION/EXPECTED RESPONSE             RESPONSE   NOT OBTAINED NOTE:     Adverse   CNMT conditions or loss of forced air cooling   may result in failure of NIS   detectors.
ES-1
25   Check     If Source Detectors Should Range Be Energized:
~ 2 TITLE:
: a. Source range channels                     a. Go to Step 25e.
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
DEENERGIZED
9 PAGE 20 of 23 STEP ACTION/EXPECTED RESPONSE
: b. Check intermediate range       flux-     b..Perform the following:
 
EITHER CHANNEL LESS THAN 10 10 AMPS                                1) IF neither intermediate range channel is decreasing, THEN initiate boration.
===RESPONSE===
: 2) Continue   with Step 26. WHEN flux is LESS THAN 10     amps on any operable channel,   THEN do Steps 25c, d and e.
NOT OBTAINED NOTE:
: c. Check the following:                     c. Continue with Step 26.     WHEN either condition met,   THEN do o  Both intermediate range                Steps 25d and e.
Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
channels - LESS THAN 10        AMPS
25 Check If Source Range Detectors Should Be Energized:
                          -OR-o   Greater than   20 minutes since reactor trip
a.
: d. Verify source   range detectors       d. Manually energize source range ENERGIZED                                  detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).
Source range channels DEENERGIZED a.
IF source ranges can NOT be restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 25.
Go to Step 25e.
b.
Check intermediate range flux-EITHER CHANNEL LESS THAN 10 10 AMPS b..Perform the following:
: 1) IF neither intermediate range channel is decreasing, THEN initiate boration.
: 2) Continue with Step 26.
WHEN flux is LESS THAN 10 amps on any operable
: channel, THEN do Steps
: 25c, d and e.
c.
Check the following:
o Both intermediate range channels LESS THAN 10 AMPS
: c. Continue with Step 26.
WHEN either condition met, THEN do Steps 25d and e.
-OR-o Greater than 20 minutes since reactor trip
: d. Verify source range detectors ENERGIZED
: d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2
of 2).
IF source ranges can NOT be
: restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 25.
: e. Transfer Rk-45 recorder to one source range and one intermediate range channel
: e. Transfer Rk-45 recorder to one source range and one intermediate range channel


44 ~
44 ~
EOP:            TITLE:
 
REV: 9 ES-1.2           POST LOCA COOLDOWN AND DEPRESSURIZATZON PAGE 21   of 23 STEP     ACTION/EXPECTED RESPONSE             RESPONSE NOT, OBTAINED 26   Establish Normal Shutdown Alignment:
EOP:
: a. Check condenser   - AVAILABLE         a. Dispatch AO to perform Attachment SD-2.
ES-1.2 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATZON REV:
9 PAGE 21 of 23 STEP ACTION/EXPECTED RESPONSE
 
===RESPONSE===
NOT, OBTAINED 26 Establish Normal Shutdown Alignment:
a.
Check condenser
- AVAILABLE
: a. Dispatch AO to perform Attachment SD-2.
: b. Perform the following:
: b. Perform the following:
o Open   generator disconnects
o Open generator disconnects
              ~ 1G13A71
~ 1G13A71
              ~ 9X13A73 o Place voltage regulator to     OFF o Open   turbine drain valves o Rotate reheater steam supply controller cam to close valves o Place reheater   dump valve switches to   HAND o Stop   all but one condensate pump
~ 9X13A73 o
Place voltage regulator to OFF o
Open turbine drain valves o
Rotate reheater steam supply controller cam to close valves o
Place reheater dump valve switches to HAND o
Stop all but one condensate pump
: c. Verify adequate Rx head cooling:
: c. Verify adequate Rx head cooling:
: 1) Check IA to   CNMT - AVAILABLE       1) Go to Step 26d.
: 1) Check IA to CNMT - AVAILABLE
: 2) Verify at least    one  control        2) Manually start one fan as rod shroud fan    - RUNNING                power supply permits (45 kw)
: 2) Verify at least one control rod shroud fan RUNNING 1)
: 3) Verify one   Rx compartment             3) Perform the   following:
Go to Step 26d.
cooling fan    - RUNNING o Dispatch AO to reset UV relays at MCC C and MCC D.
: 2) Manually start one fan as power supply permits (45 kw)
P o Manually start one fan as power supply permits (23 kw)
: 3) Verify one Rx compartment cooling fan - RUNNING
: d. Verify Attachment   SD COMPLETE
: 3) Perform the following:
o Dispatch AO to reset UV relays at MCC C and MCC D.
P o
Manually start one fan as power supply permits (23 kw)
: d. Verify Attachment SD-1 COMPLETE


*'1
*'1
    , P4a
, P4a


EOP:            TITLE:
EOP:
REV  9 ES-1 '           POST LOCA COOLDONN AND DEPRESSURIZATION PAGE 22 of 23 STEP       ACTION/EXPECTED RESPONSE           RESPONSE NOT OBTAINED 27  Check    If RCPs    Must Be Stopped:
ES-1 '
: a. RCPs  - ANY RUNNING                  a. Go to Step 28.
TITLE:
: b. Check the following:                  b. Go to Step 28.
POST LOCA COOLDONN AND DEPRESSURIZATION REV 9
o  RCP  &#xb9;1 seal D/P  - LESS THAN 220 PSID
PAGE 22 of 23 STEP ACTION/EXPECTED RESPONSE
                        -OR-o  Check  RCP seal leakage  - LESS THAN  0.25  GPM
: c. Stop affected RCP(s) 28    Check Condenser        Steam Dump        Use  intact  S/G ARV  for RCS Available      CONDENSER VACUUM      'temperature control.
GREATER THAN 20 INCHES HG 29    Check Can Be IfEstablished:
RHR Normal      Cooling
: a. RCS  cold leg temperature    - LESS  a. Return to Step  5 ~
THAN  350'F
      " b. RCS  pressure  - LESS THAN          b. Go to Step 30.
400  psig [300 psig adverse    CNMT]
: c. Place  RCS  overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
: d. Consult  TSC to determine  if RHR normal cooling should be established using Attachment RHR COOL


  ~ t/,
===RESPONSE===
NOT OBTAINED 27 Check If RCPs Must Be Stopped:
a.
RCPs
- ANY RUNNING b.
Check the following:
o RCP &#xb9;1 seal D/P -
LESS THAN 220 PSID a.
Go to Step 28.
b.
Go to Step 28.
-OR-o Check RCP seal leakage LESS THAN 0.25 GPM
: c. Stop affected RCP(s) 28 Check Condenser Steam Dump Available CONDENSER VACUUM GREATER THAN 20 INCHES HG Use intact S/G ARV for RCS
'temperature control.
29 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature LESS THAN 350'F
: a. Return to Step 5
~
" b.
RCS pressure
- LESS THAN 400 psig [300 psig adverse CNMT]
: c. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM) b.
Go to Step 30.
: d. Consult TSC to determine if RHR normal cooling should be established using Attachment RHR COOL
 
~ t/,
pi 4P
pi 4P
    +*It'
+*It'
 
EOP:
ES-1.2 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
9 PAGE 23 of 23 STEP ACTION/EXPECTED RESPONSE


EOP:            TITLE:
===RESPONSE===
REV: 9 ES-1.2          POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 23 of 23 STEP    ACTION/EXPECTED RESPONSE            RESPONSE NOT OBTAINED 30   Check Core     Exit T/Cs LESS         Return to Step 5 ~
NOT OBTAINED 30 Check Core Exit T/Cs LESS THAN 200'F Return to Step 5
THAN  200'F 31   Evaluate Long Term Plant Status:
~
31 Evaluate Long Term Plant Status:
I
I
: a. Maintain cold shutdown conditions
: a. Maintain cold shutdown conditions
: b. Consult TSC
: b. Consult TSC
                                          -END-
-END-
 
11


11 EOP:
EOP:
REV: 9 ES-1 '       POST LOCA COOLPOWN AND DEPRESSURIZATION PAGE 1 of 1 ES-1.2 APPENDIX LIST TITLE                               PAGES
ES-1 '
: 1) RED PATH  
POST LOCA COOLPOWN AND DEPRESSURIZATION REV:
9 PAGE 1 of 1 ES-1.2 APPENDIX LIST TITLE 1)
RED PATH  


==SUMMARY==
==SUMMARY==
: 2) FIGURE MIN SUBCOOLING
2)
: 3) FIGURE SDM
FIGURE MIN SUBCOOLING 3)
: 4) ATTACHMENT SEAL COOLING
FIGURE SDM 4)
: 5) ATTACHMENT RCP START
ATTACHMENT SEAL COOLING 5)
: 6) ATTACHMENT NC
ATTACHMENT RCP START 6)
: 7) ATTACHMENT D/G STOP
ATTACHMENT NC 7)
: 8) ATTACHMENT SD-1
ATTACHMENT D/G STOP 8)
: 9) ATTACHMENT SD-2
ATTACHMENT SD-1 9)
: 10) ATTACHMENT SI/UV
ATTACHMENT SD-2 10)
: 11) ATTACHMENT N2 PORVS
ATTACHMENT SI/UV 11)
: 12) ATTACHMENT RHR COOL
ATTACHMENT N2 PORVS 12)
: 13) ATTACHMENT AUX BLDG SW
ATTACHMENT RHR COOL 13)
: 14) FOLDOUT
ATTACHMENT AUX BLDG SW 14)
FOLDOUT PAGES


t x
t x
  ~
~


REV' ES-1 '       POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 1 of 1 RED PATH  
ES-1 '
POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE 1 of 1 RED PATH  


==SUMMARY==
==SUMMARY==
: a. SUBCRITICALITY Nuclear power   greater than 54
a.
: b. CORE COOLING   Core exit T/Cs greater than 1200'F
SUBCRITICALITY Nuclear power greater than 54 b.
                                        -OR-Core exit T/Cs greater than 700'F AND RVLIS level (no RCPs) less than 434 [464 adverse CNMT]
CORE COOLING Core exit T/Cs greater than 1200'F
: c. HEAT SINK Narrow   range level in all S/Gs less than 5%
-OR-Core exit T/Cs greater than 700'F AND RVLIS level (no RCPs) less than 434
[254 adverse CNMT] AND total feedwater flow less than   200 gpm
[464 adverse CNMT]
: d. INTEGRITY Cold   leg temperatures decrease greater than 100'F in last 60 minutes AND RCS cold leg temperature less than 285'F
c.
: e. CONTAINMENT CNMT   pressure greater than   60 psig
HEAT SINK Narrow range level in all S/Gs less than 5%
[254 adverse CNMT] AND total feedwater flow less than 200 gpm d.
INTEGRITY Cold leg temperatures decrease greater than 100'F in last 60 minutes AND RCS cold leg temperature less than 285'F e.
CONTAINMENT CNMT pressure greater than 60 psig


Al 4
Al 4
I
I


EOP:            TITLE:
EOP:
REV: 9 ES-1.2           POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:     Subcooling Margin = Saturation Temperature From Figure Below   [-] Core Exit T/C Indication RC S PRESSURE   (PSIG) 2500 2400 RCS PRESSURE 2300 INCREHENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 SUBCOOLED 1300                           REGION 1200 1100 1000 900 800 700                                                                 INADEQUATE SUBCOOLING 600       DVERSE CNH                                                  REGION 500 400 300 200                                           NORHAL CNHT                  TEHPERATURE INCREHENTS 10'F 100 0
ES-1.2 TITLE:
20 0      250     300     350     400     450     500   550     600     650     700 CORE   EXIT SATURATION TEHPERATURE ('F)
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
9 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication S
PRESSURE (PSIG)
RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
20 RCS PRESSURE INCREHENTS 20 PSIG SUBCOOLED REGION INADEQUATE SUBCOOLING REGION DVERSE CNH TEHPERATURE INCREHENTS 10'F NORHAL CNHT 0
250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEHPERATURE ('F)


~4 4y 4
~ 4 4y 4
4 I ' 4
4 I
~ 1 t'
4
              ~ 44
~ 1t'
~44


EOP:              TITLE:
EOP:
REV    9 ES-1 '         .POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 1   of 1 FIGURE SDM BORON CONCENTRATION     (PPH) 1800 BORON INCREMENTS 20 PPH 1600 1400 ADEQUATE SDM 1200                                                        100 PPM CONS ERVATISH INCLUDED 1000 80O 600 400 BORATE 200                                                                       BURNUP INCREMENTS 100 MWD/HTU 0       1000     2000   3000   4000   5000   6000   7000   8000 9000   10000 11000 CYCLE 22 BURNUP (HWD/HTU)                               1 NOTE: To       obtain core burnup, use     PPCS turn   on code BURNUP.
ES-1 '
TITLE:
.POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9
PAGE 1 of 1 BORON CONCENTRATION (PPH) 1800 FIGURE SDM 1600 BORON INCREMENTS 20 PPH 1400 1200 1000 ADEQUATE SDM 100 PPM CONS ERVATISH INCLUDED 80O 600 400 BORATE 200 BURNUP INCREMENTS 100 MWD/HTU 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 CYCLE 22 BURNUP (HWD/HTU) 1 NOTE: To obtain core burnup, use PPCS turn on code BURNUP.


f I I'e 1~
f I
I'e 1~
~i
~i


EOP:            TITLE:
EOP:
REV: 9 ES-1 ~ 2       POST LOCA COOLDOWN AND DEPRESSURIZATION PAGE 1 of 1 FOLDOUT PAGE SI REINITIATION CRITERIA IF ElTHER   condition listed below occurs,     THEN manually operate SI pumps as necessary:
ES-1
o RCS   subcooling based on core   exit   T/Cs   LESS THAN   O'F USING FIGURE MIN SUBCOOLING OR o PRZR   level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 54
~ 2 TITLE:
POST LOCA COOLDOWN AND DEPRESSURIZATION REV:
9 PAGE 1 of 1 FOLDOUT PAGE SI REINITIATION CRITERIA IF ElTHER condition listed below occurs, THEN manually operate SI pumps as necessary:
o RCS subcooling based on core exit T/Cs LESS THAN O'F USING FIGURE MIN SUBCOOLING OR o
PRZR level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 54
[30% adverse CNMT]
[30% adverse CNMT]
: 2. SI TERMINATION CRITERIA IF ALL conditions listed below occur, THEN go to ES-1.1, SI TERMINATION, Step 1:
2.
: a. RCS subcooling based on core exit T/Cs GREATER THAN O'F           USING FIGURE MIN SUBCOOLING
SI TERMINATION CRITERIA IF ALL conditions listed below occur, THEN go to ES-1.1, SI TERMINATION, Step 1:
: b. Total feed flow to intact S/Gs       GREATER THAN 200 GPM OR Narrow range level in     at least one intact   S/G GREATER THAN 54 [254 adverse CNMT]
a.
: c. RCS   pressure:
RCS subcooling based on core exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING
o GREATER THAN 1625 PSIG [1825     psig adverse   CNMT]
: b. Total feed flow to intact S/Gs GREATER THAN 200 GPM OR Narrow range level in at least one intact S/G GREATER THAN 54 [254 adverse CNMT]
o STABLE OR INCREASING
c.
: d. PRZR   level GREATER THAN 5%   [30~ adverse   CNMT]
RCS pressure:
: 3. SECONDARY INTEGRITY CRITERIA IF any S/G pressure is decreasing in an uncontrolled manner or is completely depressurized AND has not been isolated, THEN go to E-2,   FAULTED S/G ISOLATION,   Step 1.
o GREATER THAN 1625 PSIG
: 4. COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST   level decreases to less than   284, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION,       Step   l.
[1825 psig adverse CNMT]
: 5. AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
o STABLE OR INCREASING d.
: 6. E-3 TRANSITION CRITERIA IF any S/G level increases in an uncontrolled manner, or any S/G has abnormal radiation, THEN go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 1.}}
PRZR level GREATER THAN 5%
[30~ adverse CNMT]
3.
SECONDARY INTEGRITY CRITERIA IF any S/G pressure is decreasing in an uncontrolled manner or is completely depressurized AND has not been isolated, THEN go to E-2, FAULTED S/G ISOLATION, Step 1.
4.
COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 284, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.
5.
AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
6.
E-3 TRANSITION CRITERIA IF any S/G level increases in an uncontrolled manner, or any S/G has abnormal radiation, THEN go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 1.}}

Latest revision as of 10:19, 8 January 2025

Rev 9 to EOP ES-1.2, Post-LOCA Cooldown & Depressurization
ML17262A890
Person / Time
Site: Ginna Constellation icon.png
Issue date: 05/06/1992
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A884 List:
References
ES-1.2, NUDOCS 9206160397
Download: ML17262A890 (56)
v • d • e


Text

EOP:

ES-1.2 POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 1 of 23 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EF CT VE DATE CATEGORY 1.0 REVIEWED BY:

9206160397 920605 PDR ADOCK 05000244 P

PDR

t '

went'i I"

r

EOP ES-1 '

TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 2 of 23 A.

PURPOSE This procedure provides actions to cool down and depressurize the RCS to cold shutdown conditions following a loss of reactor coolant inventory.

B.

ENTRY CONDITIONS/SYMPTOMS 1 ~

ENTRY CONDITIONS This procedure is entered from:

E 1 g LOSS OF REACTOR OR SECONDARY COOLANTf when RCS pressure is greater than the shutoff head pressure of the RHR pumps.

6 I

<<la+

~

EOP'S-1 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 3 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED CAUTION IF RWST LEVEL DECREASES TO LESS THAN 28$,

THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, STEP 1.

NOTE:

o Foldout page should be open and monitored periodically.

o Adverse CNMT values should be used whenever CNMT pressure fs greater than 4 psig or CNMT radiation is greater than 10+0~ R/hr.

1 Verify All AC Busses ENERGIZED BY OFFSITE POWER o

Normal feed breakers to all 480 volt busses CLOSED o

480 bus voltage GREATER THAN 420 VOLTS o

Emergency D/G output breakers OPEN Perform the following:

a. IF any AC emergency bus normal feed breaker
open, THEN ensure associated D/G breaker closed.
b. Perform the following, as necessary:
1) Close non-safeguards bus tie breakers:

~ Bus 13 to Bus 14 tie

~ Bus 15 to Bus 16 tie

2) Place the following pumps in PULL STOP' EH pumps

~ Turning gear oil pump

~ HP seal oil backup pump

3) Restore power to MCCs.

~ A from Bus 13

~

B from Bus 15

~

E from Bus 15

~ F from Bus 15 4)

WHEN bus 15 restored, THEN reset control room lighting.

5) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.
c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.l, RESTORATION OF OFFSITE POWER).

'\\

4'.%

k4

\\

Q ~

+gal h

t

EOP:

ES-1

~ 2 T!TLF.:

POST LOCA COOZDOWN AND DEPRESSURIZATION REV:

9 PAGE 4 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED

  • * * * * *
  • 4' CAUTION RCS PRESSURE SHOULD BE MONITORED.

IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG

[465 PSIG ADVERSE CNMT), THE RHR PUMPS MUST BE MANUALLYRESTARTED TO SUPPLY WATER TO THE RCS.

2 Check If RHR Pumps Should Be Stopped:

a.

Check RCS pressure:

1) Pressure

- GREATER THAN 250 psig (465 psig adverse CNMT]

2) Pressure

- STABLE OR INCREASING a.

Go to Step 3.

b. Stop RHR pumps and place AUTO

r.

~a

EOP:

ES-1 '

TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 5 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 3 Establish 75 GPM Charging Flow:

a. Charging pumps

- ANY RUNNING a.

Perform the following:

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP ¹1 seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally isolate seal injection to affected RCP:

~ V-300A for RCP A

~ V-300B for RCP B

t

b. Align charging pump suction to RWST:

o LCV-112B -

OPEN o

LCV-112C -

CLOSED

2) Ensure HCV-142 open, demand at 0%.
b. IF LCV-112B can NOT be opened, THEN perform the following:
1) Verify charging pump A NOT running and place in PULL STOP.

.c. Start charging pumps as necessary (75 kw each) and establish 75 gpm total charging flow

2) Dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).

3)

WHEN V-358 open, THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).

~ Charging line flow

~ Seal injection flow

1~

4E

EOP:

ES-1 '

TITLE:

POST LOCA C'OQLDQWN AND DEPRESSURIZATION REV:

9 PAGE 6 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 4 Establish Condenser Steam Dump Pressure Control:

a. Verify condenser available:

o Any MSIV -

OPEN o

Annunciator G-15, STEAM DUMP LIT

a. Place S/G ARV controllers in AUTO at desired pressure and go to Step 5.
b. Adjust condenser steam dump controller HC-484 to desired pressure and verify in AUTO
c. Place steam dump mode selector switch to MANUAL CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).

NOTE:

TDAFW pump flow control valves fail open on loss of IA.

5 Check Intact S/G Levels:

a. Narrow range level GREATER THAN 5%

[25% adverse CNMT]

b. Control feed flow to maintain narrow range level between 17%

[25% adverse CNMT] and 50%

a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5%

[25%

adverse CNMT] in at least one S/G.

b. IF narrow range level in any S/G continues to increase in an uncontrolled manner, THEN go to E-3, STEAM GENERATOR TUBE
RUPTURE, Step l.

p lO e mes

EOP:

ES-1.2 POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 7 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

Shutdown margin should be monitored during RCS cooldown (Refer to Figure SDM).

6 Initiate RCS Cooldown To Cold Shutdown:

a. Establish and maintain cooldown rate in RCS cold legs LESS THAN 100'F/HR b.

Use RHR system if in service c.

Dump steam to condenser from intact S/G(s)

c. Manually or locally dump steam using intact S/Gs ARV.

7 Check RCS Subcooling Based On Core Exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING Manually operate SI pumps as necessary and go to Step 19.

8 Check SI and RHR Pump Status:

o SI pumps

- ANY RUNNING

-OR-Go to Step 15.

o RHR pumps

- ANY RUNNING IN INJECTION MODE 9

Place PRZR Heater Switches In The Following Positions:

o PRZR heater control group PULL STOP o

PRZR heater backup group

- OFF

c. t S

~Ii 0>)'t~+

EOP:

ES-1 '

TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE, 8 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.

THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.

  • * * * * * * * * * * * * * * * * *
  • 6 * * * * * * * * * * *.IL' NOTE:

o WHEN using a PRZR PORV, THEN select one with an operable block valve.

o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

10 Depressurize RCS To Refill PRZR

a. Depressurize using normal PRZR spray if available
a. Depressurize using one PRZR PORV.

IF IA NOT available, THEN refer to Attachment N2 PORVS.

b.

PRZR level GREATER THAN 13%

[40% adverse CNMT]

IF no PORV available, THEN use auxiliary spray valve (AOV-296).

b. Continue with Step 11.

WHEN level greater than 13%

[40%

adverse CNMT), THEN stop RCS depressurization.

c. Stop RCS depressurization

CA

EOP:

ES-1-2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9

PAGE 9 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

11 Check If An RCP Should Be Started:

a. Both RCPs STOPPED b.

RCS subcooling based on core exit T/Cs

- GREATER THAN O' USING FIGURE MIN SUBCOOLING a.

Stop all but one RCP and go to Step 12.

b.

Go to Step 19.

c.

PRZR level GREATER THAN 13%

[40% adverse CNMT]

d. Try to start an RCP
1) Establish conditions for starting an RCP o

Bus llA or llB energized o

Refer to Attachment RCP START

c. Return to Step 10.
d. IF IA to CNMT available, THEN ensure at least one control rod

.shroud fan running (45 kw each).

2) Start one RCP

~A

~ ~ I r

EOP:

ES-1-2 TIZLE0 POST

LOCP, COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 10 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 12 Check If One Of Three SI Pumps Should Be Stopped:

a. Three SI pumps

-,RUNNING b.

RCS subcooling based on core exit T/Cs GREATER THAN-35'F

[90'F adverse CNMT] USING FIGURE MIN SUBCOOLING c.

Check PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

d. Stop one SI pump a.

Go to Step 13.

b. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F

[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 12c.

IF no RHR pump can be operated in injection mode, THEN go to Step 19.

c.

Do NOT stop SI pump.

Return to Step 10.

I

~ l VE

EOP:

ES-1.2 TITLE LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 11 of 23 STEP

, ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 13 Check If One Of Two SI Pumps Should Be Stopped:

a.

Two SI pumps

- RUNNING

b. Determine required RCS subcooling from table:

a.

Go to Step 14.

Charging Pump Availability NONE ONE THREE RCS Subcooling Criteria 120'F [200'F adverse CNMT]

115'F [190'F adverse CNMT]

105'F [180'F adverse CNMT]

100'F [175'F adverse CNMT]

c.

RCS subcooling based on core exit T/Cs GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING d.

PRZR level

- GREATER THAN 13%

[40% adverse CNMT) e.

Stop one SI pump

c. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F

[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 13d.

IF no RHR pump can be operated in injection mode, THEN go to Step 19.

d.

Do NOT stop SI pump.

Return to Step 10 '

~~c

~ f

'I 0 'tF'

EOP:

ES-1.2 TITLE:

LOCA CPPLDOWN AND DEPRESSURIZATION REV:

9 PAGE 12 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 14 Check If Last SI Pump Should Be Stopped:

a.

One SI pump - RUNNING

b. Determine required RCS subcooling from table:
a. IF any RHR pump running in injection mode, THEN go to Step 19.

IF NOT, THEN go to Step 15.

Charging Pump Availability NONE ONE TWO THREE RCS Subcooling Criteria Insufficient subcooling to stop SI pump.

255'F [295'F adverse CNMT]

235'F [285'F adverse CNMT]

210'F [270'F adverse CNMT]

c.

RCS subcooling based on core exit T/Cs GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING d.

PRZR level GREATER THAN 13%

[40% adverse CNMT]

e.

Stop running SI pump

c. IF RCS hot leg temperatures greater than 325'F [270'F adverse CNMT] OR IF RHR normal cooling in service, THEN go to Step 19.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F

[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 14d.

IF no RHR pump can be operated in injection mode, THEN go to Step 19.

d.

Do NOT stop SI pump.

Return to Step 10.

Q>>lI l 0

I

EOP ES-1.2 POST LOCA COOLDONN AND DEPRESSURIZATION REV:

9 PAGE 13 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 15 Check If Charging Flow Should Be Controlled To Maintain PRZR Level:

a.

Check RHR pumps

- RUNNING IN INJECTION MODE b.

Go to Step 19 a.'Start charging pump and control charging flow to maintain PRZR level and go to Step 16.

CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

16 Check RCP Status:

a.

RCPs

- AT LEAST ONE RUNNING a.

Perform the following:

1) Establish conditions for starting an RCP:

o Verify Bus 11A or llB energized.

o Refer to Attachment RCP START.

2) Start one RCP.

IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).

IF natural circulation NOT

verified, THEN increase dumping steam.
b. Stop all but one RCP

1p ll i>

A 41'st:

ES-1.2 T!TLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE 14 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.

THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.

NOTE:

o WHEN using a PRZR PORV, THEN select one with an operable block valve.

o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

17 Depressurize RCS To Minimize RCS Subcooling:

a. Depressurize using normal PRZR spray if available
a. IF normal spray NOT available, THEN use one PRZR PORV.

IF IA, NOT available, THEN refer to Attachment N2 PORVS.

b. Energize PRZR heaters as necessary
c. Depressurize RCS until EITHER of the following conditions satisfied:

IF no PRZR PORV available, THEN use auxiliary spray valve (AOV-296).

o RCS subcooling based on core exit T/Cs

- LESS THAN 10'F USING FIGURE MIN SUBCOOLING

-OR-o PRZR level GREATER THAN 75%

f65% adverse CNMT]

PIpR"

EOP:

ES-1.2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9

PAGE 15 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 18 Verify Adequate Shutdown Margin

a. Direct HP to sample RCS for boron concentration
b. Verify boron concentration-GREATER THAN REQUIREMENTS OF FIGURE SDM
b. Borate as necessary.

19 Verify SI Flow Not Required:

a.

RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING

a. Manually operate SI pumps as

.necessary and go to Step 20.

b.

PRZR level

- GREATER THAN 5%

[30% adverse CNMT)

b. Manually operate SI pumps as necessary and return to Step 10.

I E

EOP:

ES-1.2 POST 'LOCA COQLDOWN AND DEPRESSURIZATION REV 9

PAGE 16 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 20 Check If SI ACCUMs Should Be Isolated:

a.

RCS subcooling based on core exit T/Cs

- GREATER THAN O' USING FIGURE MIN SUBCOOLING b.

PRZR level GREATER THAN 5%

f308 adverse CNMT)

c. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

d. Close SI ACCUM discharge valves

~ ACCUM A, MOV-841

~ ACCUM B, MOV-865

a. IF both RCS hot leg temperatures less than 400'F, THEN go to Step 20c.

IF NOT, THEN go to Step 21.

b. Return to Step 10.
d. Vent any unisolated ACCUMs:
1) Open vent valves for unisolated SI ACCUMs.
e. Locally reopen breakers for MOV-841 and MOV-865

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

4,y 45

'I

~l~

EOP:

ES-1.2 T!TLE:

POST LOCA COOI,DOWN AND DEPRESSURIZATION REV:

9 PAGE 17 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 21 Check If Emergency D/Gs Should Be Stopped:

a. Verify AC emergency busses energized by offsite power:

o Emergency D/G output breakers OPEN

a. Try to restore offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

o AC emergency bus voltage GREATER THAN 420 VOLTS o

AC emergency bus normal feed breakers CLOSED

b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP) 22 Verify Adequate SW Flow To CCW Hx:
a. Verify at least two SW pumps RUNNING
b. Verify AUX BLDG SW isolation valves OPEN

~ MOV-4615 and MOV-4734

~ MOV-4616 and MOV-4735

a. Manually start pumps as power supply permits (258 kw per pump).

IF less than two SW pumps can be operated, THEN go to Step 23.

b. Establish SW to AUX BLDG (Refer

~to Attachment AUX BLDG SW).

c. Verify CNMT RECIRC fan annunciator C-2, HIGH TEMPERATURE ALARM -

EXTINGUISHED cd Dispatch AO to locally throttle flow to CCW Hx to between 5000 gpm and 6000 gpm total flow.

fge

<>

4

~g A/KW

EOP:

ES-1.2 POST LOCA CPPLDPWN AND DEPRESSURIZATION REV:

9 PAGE 18 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 23 Check RCP Cooling a.

Check CCW to RCPs Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).

o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o

Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED b.

Check RCP seal injection o

Labyrinth seal D/Ps GREATER THAN 15 INCHES WATER

-OR-o RCP seal injection flow to each RCP - GREATER THAN 6 GPM

I

EOP:

ES-1 '

TITLE:

LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 19 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 24 Check If Seal Return Flow Should Be Established:

a. Verify instrument bus D-ENERGIZED
b. Verify RCP ¹1 seal outlet temperature LESS THAN 235'F
c. Verify RCP seal outlet valves OPEN

~ AOV-270A

~,AOV-270B

a. Restore power to instrument bus D from MCC B or MCC A (maintenance supply).

b.

Go to Step 25.

c. Manually open valves as necessary.
d. Reset both trains of'XY relays for RCP seal return isolation valve MOV-313 e.

Open RCP seal return isolation valve MOV-313

f. Verify RCP ¹1 seal leakoff flow LESS THAN 5.5 GPM
g. Verify RCP ¹1 seal leakoff flow GREATER THAN 0.25 GPM e.

Perform the following:

1) Place MOV-313 switch to OPEN.
2) Dispatch AO with key to RWST gate to locally open MOV-313.
f. IF any RCP seal leakoff flow greater than 5.5
gpm, THEN:

o Close the affected RCP seal discharge valve

~ RCP A, AOV-270A

~ RCP B, AOV-270B o

Trip the affected RCP IF both RCP seal discharge valves are shut, THEN go to Step 25.

g. Refer to AP-RCP.1, RCP SEAL MALFUNCTIONS

EOP:

ES-1

~ 2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 20 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

25 Check If Source Range Detectors Should Be Energized:

a.

Source range channels DEENERGIZED a.

Go to Step 25e.

b.

Check intermediate range flux-EITHER CHANNEL LESS THAN 10 10 AMPS b..Perform the following:

1) IF neither intermediate range channel is decreasing, THEN initiate boration.
2) Continue with Step 26.

WHEN flux is LESS THAN 10 amps on any operable

channel, THEN do Steps
25c, d and e.

c.

Check the following:

o Both intermediate range channels LESS THAN 10 AMPS

c. Continue with Step 26.

WHEN either condition met, THEN do Steps 25d and e.

-OR-o Greater than 20 minutes since reactor trip

d. Verify source range detectors ENERGIZED
d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2

of 2).

IF source ranges can NOT be

restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 25.
e. Transfer Rk-45 recorder to one source range and one intermediate range channel

44 ~

EOP:

ES-1.2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATZON REV:

9 PAGE 21 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT, OBTAINED 26 Establish Normal Shutdown Alignment:

a.

Check condenser

- AVAILABLE

a. Dispatch AO to perform Attachment SD-2.
b. Perform the following:

o Open generator disconnects

~ 1G13A71

~ 9X13A73 o

Place voltage regulator to OFF o

Open turbine drain valves o

Rotate reheater steam supply controller cam to close valves o

Place reheater dump valve switches to HAND o

Stop all but one condensate pump

c. Verify adequate Rx head cooling:
1) Check IA to CNMT - AVAILABLE
2) Verify at least one control rod shroud fan RUNNING 1)

Go to Step 26d.

2) Manually start one fan as power supply permits (45 kw)
3) Verify one Rx compartment cooling fan - RUNNING
3) Perform the following:

o Dispatch AO to reset UV relays at MCC C and MCC D.

P o

Manually start one fan as power supply permits (23 kw)

d. Verify Attachment SD-1 COMPLETE
  • '1

, P4a

EOP:

ES-1 '

TITLE:

POST LOCA COOLDONN AND DEPRESSURIZATION REV 9

PAGE 22 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 27 Check If RCPs Must Be Stopped:

a.

RCPs

- ANY RUNNING b.

Check the following:

o RCP ¹1 seal D/P -

LESS THAN 220 PSID a.

Go to Step 28.

b.

Go to Step 28.

-OR-o Check RCP seal leakage LESS THAN 0.25 GPM

c. Stop affected RCP(s) 28 Check Condenser Steam Dump Available CONDENSER VACUUM GREATER THAN 20 INCHES HG Use intact S/G ARV for RCS

'temperature control.

29 Check If RHR Normal Cooling Can Be Established:

a.

RCS cold leg temperature LESS THAN 350'F

a. Return to Step 5

~

" b.

RCS pressure

- LESS THAN 400 psig [300 psig adverse CNMT]

c. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM) b.

Go to Step 30.

d. Consult TSC to determine if RHR normal cooling should be established using Attachment RHR COOL

~ t/,

pi 4P

+*It'

EOP:

ES-1.2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 23 of 23 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 30 Check Core Exit T/Cs LESS THAN 200'F Return to Step 5

~

31 Evaluate Long Term Plant Status:

I

a. Maintain cold shutdown conditions
b. Consult TSC

-END-

11

EOP:

ES-1 '

POST LOCA COOLPOWN AND DEPRESSURIZATION REV:

9 PAGE 1 of 1 ES-1.2 APPENDIX LIST TITLE 1)

RED PATH

SUMMARY

2)

FIGURE MIN SUBCOOLING 3)

FIGURE SDM 4)

ATTACHMENT SEAL COOLING 5)

ATTACHMENT RCP START 6)

ATTACHMENT NC 7)

ATTACHMENT D/G STOP 8)

ATTACHMENT SD-1 9)

ATTACHMENT SD-2 10)

ATTACHMENT SI/UV 11)

ATTACHMENT N2 PORVS 12)

ATTACHMENT RHR COOL 13)

ATTACHMENT AUX BLDG SW 14)

FOLDOUT PAGES

t x

~

ES-1 '

POST LOCA COOLDOWN AND DEPRESSURIZATION REV' PAGE 1 of 1 RED PATH

SUMMARY

a.

SUBCRITICALITY Nuclear power greater than 54 b.

CORE COOLING Core exit T/Cs greater than 1200'F

-OR-Core exit T/Cs greater than 700'F AND RVLIS level (no RCPs) less than 434

[464 adverse CNMT]

c.

HEAT SINK Narrow range level in all S/Gs less than 5%

[254 adverse CNMT] AND total feedwater flow less than 200 gpm d.

INTEGRITY Cold leg temperatures decrease greater than 100'F in last 60 minutes AND RCS cold leg temperature less than 285'F e.

CONTAINMENT CNMT pressure greater than 60 psig

Al 4

I

EOP:

ES-1.2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:

Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication S

PRESSURE (PSIG)

RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0

20 RCS PRESSURE INCREHENTS 20 PSIG SUBCOOLED REGION INADEQUATE SUBCOOLING REGION DVERSE CNH TEHPERATURE INCREHENTS 10'F NORHAL CNHT 0

250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEHPERATURE ('F)

~ 4 4y 4

4 I

4

~ 1t'

~44

EOP:

ES-1 '

TITLE:

.POST LOCA COOLDOWN AND DEPRESSURIZATION REV 9

PAGE 1 of 1 BORON CONCENTRATION (PPH) 1800 FIGURE SDM 1600 BORON INCREMENTS 20 PPH 1400 1200 1000 ADEQUATE SDM 100 PPM CONS ERVATISH INCLUDED 80O 600 400 BORATE 200 BURNUP INCREMENTS 100 MWD/HTU 0

1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 CYCLE 22 BURNUP (HWD/HTU) 1 NOTE: To obtain core burnup, use PPCS turn on code BURNUP.

f I

I'e 1~

~i

EOP:

ES-1

~ 2 TITLE:

POST LOCA COOLDOWN AND DEPRESSURIZATION REV:

9 PAGE 1 of 1 FOLDOUT PAGE SI REINITIATION CRITERIA IF ElTHER condition listed below occurs, THEN manually operate SI pumps as necessary:

o RCS subcooling based on core exit T/Cs LESS THAN O'F USING FIGURE MIN SUBCOOLING OR o

PRZR level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 54

[30% adverse CNMT]

2.

SI TERMINATION CRITERIA IF ALL conditions listed below occur, THEN go to ES-1.1, SI TERMINATION, Step 1:

a.

RCS subcooling based on core exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING

b. Total feed flow to intact S/Gs GREATER THAN 200 GPM OR Narrow range level in at least one intact S/G GREATER THAN 54 [254 adverse CNMT]

c.

RCS pressure:

o GREATER THAN 1625 PSIG

[1825 psig adverse CNMT]

o STABLE OR INCREASING d.

PRZR level GREATER THAN 5%

[30~ adverse CNMT]

3.

SECONDARY INTEGRITY CRITERIA IF any S/G pressure is decreasing in an uncontrolled manner or is completely depressurized AND has not been isolated, THEN go to E-2, FAULTED S/G ISOLATION, Step 1.

4.

COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 284, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.

5.

AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).

6.

E-3 TRANSITION CRITERIA IF any S/G level increases in an uncontrolled manner, or any S/G has abnormal radiation, THEN go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 1.

Retrieved from "https://kanterella.com/w/index.php?title=ML17262A890&oldid=5107035"