ML17262A729
| ML17262A729 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/22/1992 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262A728 | List: |
| References | |
| AP-IA.1, NUDOCS 9201300044 | |
| Download: ML17262A729 (92) | |
Text
ABNORMAL PROCEDURES INDEX ISSUED 01/08/92 EFFECTIVE REV DATE AP-FW. 1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER 8
91/05/10 AP-IA.1 LOSS OF INSTRUMENT AIR 4
89/12/19 AP-PRZR.1 ABNORMAL PRESSURIZER PRESSURE 5
91/11/01 AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL/INSERTION 4
90/02/23 AP-RCC.2 RCC/RPI MALFUNCTION 4
90/04/09 AP-RCP.1 RCP SEAL MALFUNCTION 6
89/11/17 AP-RCS.1 REACTOR COOLANT LEAK 7
91/11/01 AP-RCS.2 LOSS OF REACTOR COOLANT FLOW 5
90/02/23 AP-RCS.3 HIGH REACTOR COOLANT ACTIVITY 5
90/11/20 9'201300044 920122 PDR ADOCK 05000244 P
ABNORMAL PROCEDURES INDEX ISSUED 01/08/92 KSCREEI 2
IB AP-RHR. 1 LOSS OF RHR REV
~D 8
90/06/01 AP-RHR.2 LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS 3
90/04/20 AP-SW.1 SERVICE WATER LEAK 7
90/02/23 AP-TURB' TURBINE TRIP WITHOUT RX TRIP REQUIRED 4
90/02/23 AP-TURB.2 AUTOMATIC TURBINE RUNBACK 10 91/10/11 AP-TURB ~ 3 TURBINE VIBRATIONS 5
90/02/23 AP-TURB.4 LOSS OF CONDENSER VACUUM 6
90/02/23
il I
UIPMENT SUB-PROCEDURES INDEX ISSUED. 01/08/92
~
~
c
~
PROCEDURE TITLE EFFECTIVE REV DATE ES-O.O REDIAGNOSIS 7
90/04/09 ES-0 '
REACTOR TRIP RESPONSE 7
90/12/19 ES-0.2 NATURAL CIRCULATION COOLDOWN 2
91/05/03 ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS) 1 90/04/30 ES-1.1 SI TERMINATION 91/05/03 ES-1 '
POST LOCA COOLDOWN AND DEPRESSURIZATION 8
91/06/24 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION 13 91/10/28 ES-3.1 POST-SGTR COOLDOWN USING BACKFILL 4
91/05/03 ES-3 '
POST-SGTR COOLDOWN USING BLOWDOWN 5
91/05/03 I
/
0
~ t
UIPMENT SUB-PROCEDURES INDEX ZSSUED: 03./08/92 REV DATg ES-3.3 POST-SGTR COOLDOWN USING STEAM DUMP 5
91/05/03
~
Il 0
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 1 of 13 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
- u. 8 T SUPERIN EN ENT EFF CTI E DATE CATEGORY 1.0 REVIEWED BY:
~W4 4'
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 2 of 13 A.
PURPOSE This procedure provides actions to perform a natural circulation RCS cooldown and depressurization to cold shutdown, with no accident in progress, under requirements that will preclude any upper head void formation.
B.
SYMPTOMS AND OR ENTRY CONDITIONS This procedure is entered from:
- 1) ES-0.1, REACTOR TRIP RESPONSE, when it has been determined that a natural circulation cooldown is required.
2 )
ECA 0 1 ~
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED g when it has been determined that a natural circulation cooldown is required.
- 3) Other normal operating procedures when a natural circulation cooldown is required.
't g b
WA+
p 1;1
'1
~i j
4
EOP:
ES-0.2 T!TLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 3 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF SI ACTUATION OCCURS DURING THIS PROCEDURE, E-O, REACTOR TRIP OR SAFETY INJECTION, SHOULD BE PERFORMED.
NOTE:
o Foldout page should be open and monitored periodically.
o If conditions can be established for starting an RCP during this procedure, Step 1 should be repeated.
l Try To Restart An RCP:
- a. Establish conditions for starting an RCP o
Bus llA or llB energized o
Refer to Attachment RCP START
- b. Start one RCP c.
Go to 0-2.2, PLANT SHUTDOR4 FROM HOT SHUTDOWN
'TO COLD CONDITION a.
Go to Step 2.
b.
Go to Step 2.
(A Pl F
~ "I P
0 4
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV 2
PAGE 4 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check VCT Makeup System:
- a. Verify the following:
- 1) Boric acid flow control valve SET FOR REQUIRED CSD CONCENTRATION 2)
RMW mode selector switch in AUTO 3)
RMW control armed - RED LIGHT LIT
- b. Check VCT level o
Level - GREATER THAN 20X
-OR-o Level - STABLE OR INCREASING
- b. Manually increase VCT makeup flow as follows:
- 1) Ensure BA transfer pumps and RMW pumps running.
- 2) Place RMW flow control valve HCV-111 in MANUAL and increase RMW flow.
- 3) Increase boric acid flow as necessary.
'III' N
4'
>X I
w4 0
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 5 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Check Charging Pump Suction Aligned To VCT:
a.
Check VCT level:
o Level - GREATER THAN 20%
o VCT makeup system
- AVAILABLE a.
IR VCT level can NOT be maintained greater than 5X, THEN perform the folloving:
- 1) Ensure charging pump suction aligned to RWST o
LCV-112B open o
LCV-112C closed
- b. Verify the folloving:
o LCV-112C -
OPEN o
LCV-112B -
CLOSED
- 2) Continue vith Step 4.
WHEN VCT level greater than 40X, THEN do Step '3b.
- b. Manually align valves as necessary.
4 Borate RCS To Cold Shutdown Boron Concentration (Refer to Figure SDM) 5 Establish Maximum Rx Vessel Head Cooling:
o Check control rod shroud fans-BOTH RUNNING Start fans as necessary.
o Check one Rx compartment cooling fan - RUNNING
yll 4
OI il
~.
%tk
'I p.4
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 6 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6 Verify Adequate Shutdown Margin
- b. Perform the following:
- 2) Continue to borate as'ecessary.
I CAUTION o
IP CST LEVEL DECREASES TO POR APW WILL BE NECESSARY APW PUMPS).
o SI MUST BE BLOCKED BEFORE LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES (REFER TO ER-APW.l, ALTERNATE WATER SUPPLY TO S/G PRESSURE DECREASES TO 514 PSIG.
7 Initiate RCS Cooldown To Cold Shutdown:
a.
Dump steam to condenser
- b. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 25'P/HR
- a. Manually or locally dump steam using S/G ARVs.
- c. Maintain S/G narrow range level
- BETWEEN 17% AND 39%
- c. Control feed flow as necessary.
- d. Plot RCS cold leg temperatures and PRZR temperature twice per hour
1l
'1
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 7 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8
Determine RCS Pressure And Temperature Limits:
a.
Check control rod shroud fans-BOTH RUNNING
- a. Perform the following:
- b. Maintain RCS pressure
- WITHIN LIMITS OF FIGURE NAT CIRC C/D WITH SHROUD FANS 2)
Go to Step 9.
1
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 'k
- CAUTION SI ACTUATION CIRCUITS WILL AUTOMATICALLYUNBLOCK IF PRZR PRESSURE INCREASES TO GREATER THAN 1992 PSIG.
9 Check If SI Should.Be Blocked:
a.
Check the following:
o PRZR pressure
- LESS THAN 1950 PSIG
- a. Continue with Step 10.
WHEN either condition satisfied, THEN do Steps 9b and 9c.
-OR-o LOW PRZR PRESS BLOCK SAF INJEC status light - LIT
- b. Place Train A and B SI block" switches to BLOCK
- c. Verify SAFETY INJECTION BLOCKED status light - LIT
- c. Maintain PRZR pressure greater than 1750 psig and S/G pressure greater than 514 psig until SI blocked.
1 W'
~
'h
$ J'j l
'1
,g 4'I
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 8 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o If at any time it is determined that a natural circulation cooldown and depressurization must be performed at a rate that may-form a steam void in the vessel, then procedure ES-0.3, NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL, should be used.
o If charging line to PRZR aT exceeds 320'R, then plant staff should be consulted before using auxiliary spray.'
If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
10 Initiate RCS Depressurization:
a.
Check letdown - IN SERVICE
- b. Depressurize RCS using auxiliary spray valve (AOV-296)
- c. Plot RCS temperature and pressure on curve selected in Step 8
- a. Try to establish letdown (Refer to Attachment LETDOWN).
IR letdown can NOT be established, THEN depressurize RCS using one PRZR PORV and go to Step 11.
, b. IR auxiliary spray valve NOT available, THEN use one PRZR PORV.
ll Maintain PRZR Level Between 204 And 30%
"0
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 9 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Monitor RCS Cooldown:
o Core exit T/Cs - DECREASING o
RCS hot leg temperatures-DECREASING o
RCS subcooling based on core exit T/Cs - INCREASING o
Cooldown rate in RCS cold legs-LESS THAN 25'F/HR 13 Establish Required RCS Hydrogen Concentration (Refer to S
3 ~ 3 C g H2 OR 02 REMOVAL FROM PRIMARY SYSTEM BY BURPING VCT) 14 Check For Steam Void In Reactor Vessel:
o PRZR level -
NO UNEXPECTED LARGE VARIATIONS o
- GREATER THAN 95X Repressurize RCS.within allowable limits and continue cooldown.
IF RCS depressurization must
- continue, THEN go to ES-0.3, NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL.
ig
~ 1
EOP:
ES-0.2 TlTLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 10 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Check If SI ACCUMs Should Be Isolated:
a.
RCS pressure
- LESS THAN 1500 PSIG
~ MOV-841, MCC C position 12P
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves
~ ACCUM A) MOV-841
~ ACCUM B, MOV-865
- a. Continue with Step 16.
MHEN RCS pr'essure is less than 1500 psig, THEN do Step 15b.
- c. IP any valve can NOT be closed, THEN perform the following:
- 1) Dispatch personnel to locally close valves, as necessary.
,ACCUMs isolated.
IP any SI ACCUM can NOT be isolated AND RCS depressurization to less than 1000 psig is required, THEN:
- 1) Open vent valves for unisolated SI ACCUMs.
- d. Locally open breakers for MOV-841 and MOV-865
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
Q$ 4p "l
6<,','l v'
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 11 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 16 Check If SI System Normal Shutdown Alignment, Should'e Established:
- a. Verify the following:
o RCS cold leg temperatures-LESS THAN 350'F o
RCS pressure
- LESS THAN 1500 PSIG
- b. Lock out SI system as follows:
- 1) Place all SI pump switches in PULL STOP a.
Do NOT lock out SI system.
Continue with Step 17.
,WHEN requirements
- met, THEN do Step 16b.
- 2) Locally close breakers for SI pump discharge valves to cold legs
~ MOV-878B, MCC C position 8C
~ MOV-878D, MCC D position 8F
- 3) Close SI pump discharge to cold legs
~ MOV-878B
~ MOV-878D
- 4) Locally open breakers for MOV-878B and MOV-878D 17 Maintain Letdown Flow:
a.
Open letdown orifice valves as necessary
- b. Adjust low pressure letdown control valve setpoint as necessary
$ >v
~
'w C
TL 4
~II
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 12 of, 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Maintain Required RCP Seal Injection Flow And Labyrinth Seal D/P:
o Labyrinth seal D/P to each RCP-GREATER THAN 15 INCHES OF WATER Perform the folloving:
o Adjust charging flov to REGEN Hx (HCV-142) as necessary.
-OR-o Seal injection flow to each RCP
- GREATER THAN 6 GPM o
Dispatch AO to adjust seal in)ection needle valves if necessary.
~ RCP A, V-300A
~ RCP B, V-300B 19 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'F
- a. Return to Step 7.
b.
RCS pressure
- LESS THAN 400 PSIG
- b. Return to Step 7.
- c. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
- c. IF RCS overpressure protection system can NOT be placed in
- service, THEN consult Plant staff to determine if RHR normal cooling should be established and go to Step 20.
20 Continue RCS Cooldown To Cold Shutdown
.0 "ri Ol A>~T
,'Ci~~
~ C
EOP:
ES-0 '
TITLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 13 of 13 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION DEPRESSURIZING THE RCS BEFORE THE ENTIRE RCS IS LESS THAN 200'F MAY RESULT IN ADDITIONALVOID PORMATION IN THE RCS.
21 Continue Cooldown Of Inactive Portion Of RCS:
- a. Cool upper head region using control rod shroud fans
- b. Cool S/G U-tubes by dumping steam from all S/Gs CAUTION IP LESS THAN TWO CONTROL ROD SHROUD PANS ARE RUNNING, THE UPPER HEAD REGION MAY REMAIN ABOVE 200'F FOR UP TO 29 HOURS AFTER REACHING CSD; 22 Determine If RCS Depressurization Is Permitted:
- a. Entire 'RCS - LESS THAN 200'F
~ Core exit T/Cs
~ Upper head T/Cs
~ RCS hot leg temperature
~ RCS cold leg temperature
- b. Check control rod shroud fan status BOTH RUNNING DURING COOLDOWN
- c. Maintain cold shutdovn conditions (Refer to 0-2.3, PLANT AT COLD SHUTDOWN) a.
Do NOT depressurize RCS.
Return to Step 20.
- b. Consult Plant staff to determine vait period for upper head cooling.
-END-
p
.J
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 1 of 1 ES-0. 2 APPENDIX LIST TITLE PAGES 1)
RED PATH
SUMMARY
2)
FIGURE MIN SUBCOOLING 3)
FIGURE SDM 4)
FIGURE NAT CIRC C/D WITHOUT SHROUD FANS 5)
FIGURE NAT CIRC C/D WITH SHROUD FANS 6)
ATTACHMENT RCP START 7)
ATTACHMENT LETDOWN 8)
ATTACHMENT RHR COOL 9)
FOLDOUT
it L~
4%
Es
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV 2
PAGE 1 of 1 RED PATH
SUMMARY
a.
SUBCRIgICALITY 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
[46%
adverse CNMTj 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
E.
l
)
0 E1 -.
~ %4 4
V
~ 1 f4 h l'1
~
EOP:
ES-0.2 1'1 TLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-j Core Exit T/C Indication 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
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION E CNMT ADVERS NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 '00 450 500 550 600 650 '00, CORE EXIT SATURATION TEMPERATURE ('F)
i'OP: ES-0.2 NATURAL CIRCULATION COOLDOWN REV 2
PAGE 1 of 1 FIGURE SDM BORON CONCENTRATION (PPM) 1800 1600 BORON INCREMENTS 20 PPM 1400 1200 ADEQUATE SDM 1000 soo 600 400 TE ORA 200 BURNUP INCREMENTS 100 MWD/MTU 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 21 BURNUP (MWD/MTU)
NOTE: To obtain core burnup, use PPCS turn on code BURNUP.
~4 I t
))a
'I w 4
N
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 1 of 1 FIGURE NAT CIRC C
D WITHOUT SHROUD FANS RCS 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
20 PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG ACCEPTABLE OPERATING REGION TEMPERATURE INCREMENTS 10'F 0
250 300 350 400 450 500 550 600 650 700
- RCS COLD LEG TEMPERATURE ('F)
[1]
Wait 11 Hours before decreasing RCS pressure less than 1600 psig
[2]
RCS pressure should be maintained greater than 350 psig for 29 Hours to prevent voiding in the Rx vessel upper head.
e ep.
ChP
'p cp f.
L tf ~
~vp p
EOP:
ES-0.2 TITLE:
NATURAL CIRCULATION COOLDOWN REV 2
PAGE 1 of 1 FIGURE NAT CIRC C
D WITH SHROUD FANS RCS 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1200 1100 1000 900 800 700 600 500 400 300 200 100 PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG ACCEPTABLE OPERATING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 RCS COLD LEG TEMPERATURE ('F)
1 k
'l
.1 Q I
EOP:
ES-0.2 NATURAL CIRCULATION COOLDOWN REV:
2 PAGE 1 of 1 FOLDOUT PAGE 2.
RCP TRIP CRITERIA IF BOTH conditions listed below occur, THEN trip both RCPs:
a.
SI pumps AT LEAST TWO RUNNING b.
RCS pressure minus maximum S/G pressure LESS THAN 175 PSIG SI PUMP AUTO SWITCHOVER CRITERION WHEN BAST level decreases to 104, THEN ensure SI pump automatic switchover to RWST.
3.
SI ACTUATION CRITERIA 4 ~
IF EITHER condition listed below occurs, THEN actuate SI and go to E-O, REACTOR TRIP OR SAFETY INJECTION, Step 1.
o RCS subcooling based on core exit T/Cs LESS THAN O'F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING OR o
PRZR level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 54 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).
l
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 1 of 10 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 1 i le NT SUPER NT NDENT EFFECTI E DATE QA NON-QA-CATEGORY 1.0 G)NNA STATION START:
DATE TIME REVIEWEDBY'OMPLETFD:
DATE
)W
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 2 of 10 A.
PURPOSE This procedure provides actions to continue plant cooldown and depressurization to cold shutdown, with no accident in progress, under conditions that allow for the potential formation of a void in the upper head region with a vessel level system available to monitor void growth.
B.
SYMPTOMS AND OR ENTRY CONDITIONS 1.
ENTRY CONDITIONS This procedure is entered from:
, A)
B)
ES-0.2, NATURAL CIRCULATION COOLDOWN, after completing the first 9 steps, if rapid cooldown or depressurization is required.
ES-0.2, NATURAL CIRCULATION COOLDOWN, Step 13, if depressurization is required which may result in upper head voiding.
4
~ e
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAN VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 3 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF SI ACTUATION OCCURS DURING THIS PROCEDURE, E-O, REACTOR TRIP OR SAFETY INJECTION, SHOULD BE PERFORMED.
o THE FIRST 9 STEPS OF ES-0.2, NATURAL CIRCULATION COOLDOWN, SHOULD BE PERFORMED BEFORE CONTINUING WITH THIS PROCEDURE.
1 NOTE:
o Foldout page should be open and monitored periodically.
o If conditions can be established for starting an RCP during this procedure, then Step 1 should be repeated.
1 Try To Start An RCP:
- a. Establish conditions for starting an RCP:
o Bus llA or llB energized o
Refer to Attachment RCP START b.
GREATER THAN 95X
- c. Start one RCP d.
Go to 0-2.2, PLANT SHUTDOWN FROM HOT SHUTDOWN TO COLD CONDITION a.
Go to Step 2.
- b. Perform the following:
- 1) Increase PRZR level to 65X using charging and letdown.
2)
Dump steam to establish subcooling based on core exit T/Cs greater than 20'F using Figure MIN SUBCOOLING.
c.
Go to Step 2.
1
'4
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 4 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Saturated conditions in the PRZR should be established before trying to decrease PRZR level.
2 Establish PRZR Level To Accommodate Void Growth:
a.
Check PRZR level -
BETWEEN 20X AND 30X
- b. Place charging pump speed controllers in MANUAL
- a. Control charging and letdown as necessary.
3 Continue RCS Cooldown And Depressurization:
- a. Maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR
- b. Maintain RCS pressure
- WITHIN LIMITS OF FIGURE NAT CIRC C/D WITH RVLIS c.
Check letdown - IN SERVICE
- d. Depressurize RCS using auxiliary spray valve (AOV-296)
1 4
q Ce':
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 5 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Control PRZR Level:
- a. Level - GREATER THAN 20%
- b. Level - LESS THAN 90%
- a. Control charging and letdown to increase PRZR level to greater than 20%.
- b. Perform the following:
- 1) Turn on PRZR heaters to maintain PRZR pressure stable.
- 2) Decrease PRZR level to less than 90% by one of the following:
o Control charging as necessary.
-OR-o Continue cooldown to shrink RCS inventory.
GREATER THAN 954'erform the following:
- b. Return to Step 3.
4 ~ i 4
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 6 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6
Check If SI ACCUMs Should Be Isolated:
a.
RCS pressure
- LESS THAN 1500 PSIG
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves
~ ACCUM A, MOV-841
~ ACCUM B, MOV-865
- a. Continue with Step 7.
VHEN RCS pressure is less than 1500 psig, THEN do Step 6b.
- c. Perform the following:
- 1) Dispatch personnel to locally close valves, as necessary.
- d. Locally open breakers for MOV-841 and MOV-865 IF any SI ACCUM can NOT be isolated AND RCS depressurization to less than 1000 psig is required, THEN:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
N
EOP:
ES-0.3 i.
TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 7 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7
Check If SI System Normal Shutdown Alignment Should Be Established:
- a. Verify the following:
o RCS cold leg temperatures-LESS THAN 350'F o
RCS pressure
- LESS THAN 1500 PSIG Y
- b. Lock out SI system as follows:
- 1) Place all SI pump switches in
- PULL STOP a.
Do NOT lock out SI system.
Continue with Step 8.
VHRN requirements
- met, THEN do Step 7b.
- 2) Locally close breakers for SI pump discharge valves to cold legs
~ MOV-878B, MCC C position SC
~ MOV-878D, MCC D position SF
- 3) Close SI pump discharge to cold legs
~ MOV-878B
~ MOV-878D
- 4) Locally open breakers for MOV-878B and MOV-878D 8
Maintain Letdown Flow:
a.
Open letdown orifice isolation valves as necessary
- b. Adjust low pressure letdown pressure controller as necessary
Og QF, e"
LX
("
1a j,f,
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 8 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9
Maintain Required RCP Seal Injection Flow And Labyrinth Seal D/P:
o Labyrinth seal D/P to each RCP-GREATER THAN 15 INCHES OF WATER Perform the following:
o Adjust charging flow to REGEN Hx (HCV-142) as necessary.
-OR-o Seal injection flow to each RCP
- GREATER THAN 6 GPM o
Dispatch AO to ad)ust seal injection needle valves if necessary.
~ RCP A, V-300A
~ RCP B, V-300B 10 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'F b.
RCS pressure
- LESS THAN 400 PSIG
- a. Return to Step 3.
- b. Return to Step 3.
- c. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
- c. IF RCS overpressure protection system can NOT be placed in
- service, THEN consult Plant staff to determine if RHR normal cooling should be established and go to Step 11.
11 Continue RCS Cooldown To Cold Shutdown
k
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 9 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION DEPRESSURIZING THE RCS BEFORE THE ENTIRE RCS IS LESS THAN 200'F MAY RESULT IN ADDITIONALVOID FORMATION IN THE RCS.
12 Continue Cooldown Of Inactive Portion Of RCS:
- a. Cool upper head region using control rod shroud fans
- b. Cool S/G U-tubes by dumping steam from all S/Gs
- GREATER THAN 95%
- c. Return to Step 11.
pc~~
A'
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 10 of 10 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF NO CONTROL ROD SHROUD FANS ARE RUNNING, THE UPPER HEAD REGION MAY REMAIN ABOVE 200'F FOR UP TO 29 HOURS AFTER REACHING CSD.
13 Determine If RCS Depressurization Is Permitted:
- a. Entire RCS - LESS THAN 200'F
~ Core exit T/Cs
~ Upper head T/Cs
~ RCS hot leg temperature
~ RCS cold leg temperature
- b. Check control rod shroud fan status
- BOTH RUNNING DURING COOLDOWN
- c. Refer to 0-2.3, PLANT AT COLD SHUTDOWN a.
Do NOT depressurize RCS.
Return to Step ll.
- b. Consult Plant staff to determine wait period for upper head cooling.
-END-
'4
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 1 of 1 ES-0.3 APPENDIX LIST TITLE PAGES 1)
RED PATH
SUMMARY
2)
FIGURE MIN SUBCOOLING 3)
FIGURE NAT CIRC C/D WITH RVLIS 4)
ATTACHMENT RCP START 5)
ATTACHMENT RHR COOL 6)
FOLDOUT
4'
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 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 43% [464 adverse CNMT]
c.
HEAT SINK Narrow range level in all S/Gs less than 54
[25% 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
Fh-~
)y(
1 r
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADVERSE CNMT NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'R 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('R)
ul tv g
'I F
l I
P
EOP:
ES-0. 3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 1 of 1 FIGURE NAT C D WITH RVLIS RCS PRESSURE (PSIG) 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 RCS PRESSURE INCREMENTS 20 PSIG ACCEPTABLE OPERATING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 RCS COLD LEG TEMPERATURE ('P)
+tl Dy I
t'y
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV' PAGE 1 of 1 ATTACHMENT RCP START A)
The following are prerequisites for starting an RCP:
o RCP oil lift pump running (2 minutes) o RCP oil liftpressure white light LIT B)
In addition, the following conditions should be met prior to starting an RCP:
- 1) Both PRZR spray valves closed DEMAND AT 04 2)
CCW in service and aligned to RCP 3)
RCP temperatures normal:
o Seal inlet temperature LESS THAN 135'F o
CCW temperature and flow alarms EXTINGUISHED o Motor bearing temperatures NORMAL (PPCS GD RCPS or recorder, if selected) 4)
RCP seal injection in service o Seal injection flow GREATER THAN 6 gpm o Labyrinth seal D/P GREATER THAN 15 inches OF WATER 5)
RCP 41 seal D/P GREATER THAN 220 psid 6)
RCP oil levels:
o Level alarms EXTINGUISHED o Level indicators ON SCALE 7)
RCP seal return:
a)
RCP gl seal outlet valves open:
o AOV-270A for RCP A o AOV-270B for RCP B
b) IF MOV-313, seal return isolation,
- open, THEN verify the following:
o VCT pressure GREATER THAN 15 psig o RCP gl seal leakoff flow BETWEEN 0.25 gpm AND 5.5 gpm o RCP N2 seal standpipe low level alarm EXTINGUISHED c) IF MOV-313 closed, THEN verify other RCP gl seal parameters normal prior to starting an RCP:
o RCP Nl seal inlet temperature o RCP Nl seal D/P NOTE:
RCP oil lift pump should be stopped after RCP is running.
C.
I' ItI
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 1 of 2 ATTACHMENT RHR COOL Place the RHR system in service as follows:
1.
Start second CCW pump as power supply permits (124 kw) 2.
Dispatch AO with locked valve key and AUX BLDG sub-basement key to perform the following:
o Open V-712A and V-712B, RHR Hx Bypass.
o Open V-709C and V-709D, RHR pump discharge crosstie valves (AUX BLDG sub-basement).
o Close breaker for MOV-856, MCC C position 10C.
3.
Close breakers for RHR valves o
MOV-700, MCC C position 7F o
MOV-701, MCC D position 7F o
MOV-720, MCC C position 7C o
MOV-721, MCC D position 7C 4.
Close MOV-856, RHR suction from RWST.
5.
Close RHR Hx outlet valves and bypass valve o
HCV-624 o
HCV-625 o
HCV-626 6.
MOV-738A o
MOV-738B 7.
Set PCV-135 controller in auto at approximately RCS pressure.
8.
Slowly open HCV-133, RHR letdown to CVCS, to equalize pressure between RHR and CVCS.
9.
Open RHR pump suctions from loop A hot leg isolation valves o
MOV-700 o
MOV-701
'10. Start one RHR pump and maintain flow at minimum for 5 minutes to equalize temperature of the RHR system.
ll. Adjust PCV-135 and HCV-133 as necessary to control letdown flow less than 70 gpm 12.
Open RHR'ump discharge to loop B cold leg isolation valves o
MOV-720 o
,MOV-721
4a '
~41$
Ad'
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV:
0 PAGE 2 of 2 ATTACHMENT RHR COOL (CONT.)
- 13. Start second RHR pump.
14.
Crack open HCV-624 and HCV-625 to establish RHR cooling.
15.
Check open HCV-133 and close all letdown orifice valves.
- 16. Adjust PCV-135 as necessary to control letdown flow.
NOTE: If needed, flow up to 3100 gpm using two RHR pumps is permissible.
- 17. Adjust HCV-626 for desired flowrate (less than 3100 gpm for 2 RHR pumps running).,
- 18. Place HCV-626 in AUTO.
- 19. Establish desired cooldown rate using RHR Hx outlet valves:
o HCV-624 o
HCV-625
- 20. Plot RCS and PRZR cooldown rates once every 30 min. (obtain 0-2.2 RCS and PRZR temperature versus time plot).
k~i Y
EOP:
ES-0.3 NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV 0
PAGE 1 of 1 2.
FOLDOUT PAGE RCP TRIP CRITERIA IF BOTH conditions listed below occur, THEN trip both RCPs:
a.
SI pumps AT LEAST TWO RUNNING b.
RCS pressure minus maximum S/G pressure LESS THAN 175 psig SI PUMP AUTO SWITCHOVER CRITERION WHEN BAST level decreases to 104, THEN ensure SI pump automatic switchover to RWST.
3.
4 ~
SI ACTUATION CRITERIA IF EITHER condition listed below occurs, THEN actuate SI and go to E-O, REACTOR TRIP OR SAFETY INJECTION, Step 1.
o RCS subcooling based on core exit T/Cs LESS THAN O'F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING OR o
PRZR level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 54 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).
. Qi
EOP:
ES-g.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REVIS!ON:
EOP STEP ERG STEP DEVIATION/JUSTIFICATION 1
t 1
1 C2 1
Nl ES-0.3 is designed to control the extent of voiding in the RCS during an expeditious natural circulation cooldown and depressurization such that natural circulation flow and RCS pressure/pressurizer level control are not maintained.
The guidance contained therein is derived from the corresponding generic guidelines ES-0.3, NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS) and ES-0.4, NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITHOUT RVLIS).
The salient features of each of these generic guidelines was examined and compared to the instructions contained in the proposed procedure.
1 Cl No difference.
1 C2 No significant difference.
1 Nl No significant difference.
1 N2 Deleted note regarding priority of RCP start.
Ginna is a 2-loop plant with a spray connection to each loop.
The difference in driving head.is not significant, and since other operational considerations may give priority to starting the RCP on "the loop without the surge line, the note was deleted to minimize confusion.
1 N2 1
N3 No difference.
1 (1)
Rearranged substeps to check conditions for starting an RCP to allow bypassing remainder of step if 4 KV power is not available.
2 N
3 C1 2
N No difference.
2 (2)
No difference.
Added a caution as a reminder to operator that bo"ation to CSD must be complete prior to cooldown to <500'F.
Page 3 of 6
r 8
t t
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDGWK WITH STEAM VOID IN VESSEL (WITH RVLIS)
REV IS IOII:
EOP STEP ERG STEP DEVIATION/JUSTIPICATION 3
C2 Added a caution to remind the operator that the aT between the PRZR and Thot should be maintained less than 200'P.
This is to minimize the concern for thermal shock in the PRZR lower head due to possible insurge.
This concern, evolved from the surge line stratification issue.
3 N
Inserted note which appears in ES-0.4 before Step 5
since it is a good reminder for the operator.
4 C
Inserted ES-0.4 Step 3 as written in the ERG.
This was done as a result of combining ES-0.3 and ES-0.4.
Provided a range for RCS pressure control to facilitate operations.
Included caution from ES-0.2 SI block step to remind the operator that if pressure increases above the block
Inserted a step to verify SI blocked.
Add detail in the RNO on how to block SI and how to verify SI blocked.
Include RNO that if SI cannot be blocked to maintain RCS and S/G pressures above SI setpoints.
Ginna train A and train B block switches block both RCS and S/G pressure SI for each individual train while the reference plant has block switches for each signal.
5 C
Included caution from ES-0.4 to remind the operator to monitor for void growth.
Void growth would be indicated by rapidly increasing PRZR level.
This was done as part of the effort to eliminate ES-0.4.
5 Nl 5 N2 Added a note to remind the operator that the Tech Spec limit for charging line to PRZR hT is 320'P and that violating this limit should be carefully considered.
Added a note to remind the operator to select a
PORV with an operable block valve to allow isolation in case the PORV fails to close.
5 N3 Added a note to remind the operator that AUX spray may be enhanced by closing the normal charging valve to force all charging through the AUX spray line.
Page 4 of 6
'0 U
EOP:
ES-0.3 TITLE i.
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID IN VESSEL (WITH RVLIS)
REVISION:
EOP STEP ERG STEP DEVIATION/JUSTIFICATION Inserted ES-0.4 Step 4 as written in the ERG to reduce RCS pressure to less than the Tech Spec pressure for isolating the SI ACCUMs.
This was done as a result of combining ES-0.3 and ES-0.4.
6 (6)
Split. ERG step into two steps; one for isolating SI accumulators, and one for establishing normal SI system shutdown alignment.
This step includes Tech Spec criteria for removing accumulators from service and plant specific instructions for isolating accumulators.
The RNO also provides guidance in the'event that any accumulator isolation valve can NOT be closed including steps required for venting the accumulators to CNMT if necessary.
3 (3)
Deleted subcooling check because maintaining temperature/pressure
'relationship within limits of Figure Natural Circ C/D With Void In Upper Head will ensure that 20'F subcooling is met.
Added a check to ensure RCS cold legs greater than minimum temperature for initiation of RCS overpressurization system.
If
- not, then the operator is directed to stabilize RCS temperature.
4 (4)
No difference.
5 (5)
Added substep a to check any train of RVLIS operable.
If neither train available, the RNO will transition to the next step.
10 7
(6)
No difference.
8 (6)
Included criteria for verifying adequate seal in)ection and means for establishing adequate seal in)ection if not available.
12 This step provides Tech Spec criteria which must be met prior to removing SI system from service.
It also includes plant specific instructions for establishing SI system shutdown alignment.
Page 5 of 6.
~l~-
h1
EOP:
ES-0.3 TITLE:
NATURAL CIRCULATION COOLDOWN WITH STEAM VOID lN VESSEL (WITH RVLIS)
REVISION:
EOP STEP ERG STEP DEVIATION/JUSTIFICATION 13 9
(7)
Inserted a substep to direct placing the low temperature overpressure protection system in service prior to establishing RHR.
This is a Tech Spec requirement.
Included
- a. requirement to sample RHR prior to placing the system in service as is done in other normal cooldown procedures.
Referenced an attachment to provide instructions for sampling.
Also included a reference to an attachment for establishing RHR cooling.
14 10 (8)
No difference.
15 C
11 C
No difference.
15 11 (9)
CRDM fans called control rod shroud fans at Ginna.
16 C
Inserted caution to remind operator that upper head remain hot for a significant period of time with less than two control rod shroud fans running.
16 12 (10)
Added a substep to verify PRZR level sufficiently low to allow for displacement of water from the vessel during void growth to prevent water solid operation.
Specifically, this level will provide effective indication of voiding in the vessel.
Added a list of indications to check to ensure entire RCS is less than 200'F.
Added a substep to determine if a soak time is required prior to depressurizing the RCS.
-END-Page 6 of 6