ML17264A808
| ML17264A808 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/23/1997 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17264A809 | List: |
| References | |
| PROC-970123, NUDOCS 9702030051 | |
| Download: ML17264A808 (106) | |
Text
EOP:
E-1 T1TLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV 14 PAGE 1 of 16 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIB MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
970203005i 970%23 PDR ADQCK 05000244 F
PDR I
EOP:
E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 2 of 16 A.
PURPOSE This procedure provides actions to recover from a loss of reactor or secondary. coolant.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, and FR-,H.l,
RESPONSE
TO LOSS OF SECONDARY HEAT SINK, when a
PRZR PORV is stuck open and -its block valve can not be closed.
b.
E-O, REACTOR TRIP OR SAFETY INJECTION, with any of the following symptoms:
high containment radiation, high containment pressure, or high containment, recirculation sump level.
c ~
E 0 g REACTOR TRIP OR SAFETY INJECTION g ECA 2 ~ 1 g UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS, and FR-H.1,
RESPONSE
TO LOSS OF SECONDARY.HEAT SINK, when RCS pressure is less than the shutoff head pressure of the RHR pumps or is decreasing.
d.
ES-1.1, SI TERMINATION, and FR-I.2,
RESPONSE
TO LOW PRESSURIZER LEVEL, if SI has to be reinitiated.
e.
E-2, FAULTED STEAM GENERATOR ISOLATION, after identification and isolation of a faulted S/G.
f.
ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED/
after normal injection mode conditions are established.
g..
ECA-1.2, LOCA OUTSIDE CONTAINMENT, when a
LOCA outside containment is isolated.
h.
FR-C.l,
RESPONSE
TO INADEQUATE CORE COOLING, and FR-C.2,
RESPONSE
TO DEGRADED CORE COOLING, after core cooling has been reestablished.
i FR H 1 g
RESPONSE
TO'OSS OF SECONDARY HEAT S INKJ if RCS pressure is less than all non-faulted S/G(s) pressure.
j.
FR-H.1,
RESPONSE
TO LOSS OF SECONDARY HEAT SINK, after secondary heat sink has been reestablished and all PRZR PORVs are close. '.
EOO:
E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 3 of 16 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.
Critical Safety Function Status Trees should be monitored.
(Refer to Appendix 1 for Red Path Summary.)
J Conditions should be evaluated for Site Contingency Reporting (Refer to EPIP-1.0, GINNA STATION EVENT EVALUATION AND CLASSIFICATION).
Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr.
+ 1 Monitor RCP Trip Criteria:
a.
RCP status
- ANY RCP RUNNING
- b. SI pumps
- AT LEAST TWO RUNNING c.
RCS pressure minus maximum S/G pressure
- LESS THAN,175 psig
[400 psig adverse CNMT]
- d. Stop both RCPs a.
Go to Step 2.
b.
Go to Step 2.
c.
Go to Step 2.
E-1 T!TLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV 14 PAGE 4 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Cheek If S/G Secondary Side Is Intact:
o Pressure in both S/Gs STABLE OR INCREASING o
Pressure in both S/Gs
- GREATER THAN 100 PSIG IF any S/G pressure decreasing in an uncontrolled manner OR completely depressurized, THEN verify faulted S/G isolated unless needed for RCS cooldown:
~ Steamlines
, ~ Feedlines IF NOT, THEN go to E-2, FAULTED STEAM GENERATOR ISOLATION, Step 1.
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.
- 3 Monitor Intact 8/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 1.
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E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14
'AGE 5 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Check. Secondary Radiation Levels - NORMAL o
Steamline radiation monitor (R-31 and R-32) o Request HP sample S/Gs for activity IF steamline radiation monitors NOT available, THEN dispatch AO to locally check steamline radiation.
IF abnormal radiation levels detected in any S/G, THEN go to E-3, STEAM GENERATOR TUBE RUPTURE, Step l.
CAUTION IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR
- 5 Monitor PRZR PORV Status:
a.
Power to PORV block valves AVAILABLE b.
PORVs CLOSED a., Restore power to block valves unless block valve was closed to isolate an open PORV:
~ MOV-515, MCC D position 6C
~ MOV-516, MCC C position 6C,
- b. IF PRZR pressure less than 2335 psig, THEN manually close PORVs.
- c. Block valves
- AT LEAST ONE OPEN IF any PORV can NOT be closed,,
THEN manually close its'lock valve.
IF block valve can NOT be closed, THEN dispatch AO to locally check breaker,
~ MOV-515, MCC D position 6C
~ MOV-516, MCC C position 6C
- c. Op'n one block valve unless it was closed to isolate an open PORV.
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E-1 T!ALE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 6 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
6 Reset SI 7 Reset CI:
a.
Depress CI reset pushbutton
- b. Verify annunciator'A-26, CNMT ISOLATION -
EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Depress CI reset pushbutton.
8 Verify Adequate 8Ã Plow:
a.
Check at least two SW pumps RUNNING
- a. Manually start SW pumps as power supply permits (258 kw each).
IF less, than two SW pumps
- running, THEN perform the following:
- 1) Ensure SW isolation.
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
- 2) Disp'atch AO to establish normal shutdown alignment (Refer to Attachment SD-1) 3)
Go to Step 10.
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E-1 LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 7 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Establish ZA to CNMT:
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed CLOSED
-OR-o Bus 15 normal feed CLOSED
- b. Verify turbine building SW isolation valves OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664 c, Verify at least two air compressors
- RUNNING d.
Check IA supply:
o Pressure GREATER THAN 60 PSIG o
Pressure STABLE OR INCREASING
OPEN a.
Perform the following:
- 1) Close non-safeguards bus tie breakers:
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie
- 2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).
IF NOT,'HEN evaluate if CNMT RECIRC fans should be stopped (Refer to Attachment CNMT RECIRC FANS).
3)
WHEN bus 15 restored, THEN reset control room lighting.
- b. Manually align valves'.
Manually start air compressors as power supply permits (75 kw each).
IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as
- necessary.
- d. Perform the following:
- 1) Continue attempts to restore IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 10.
WHEN IA restored, THEN do Steps 9e and f.
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E-1 LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 8 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Check Normal Power Available To Charging Pumps:
o Bus 14 normal feed breaker-CLOSED o
Bus 16 normal feed breaker-CLOSED Verify adequate emergency D/G capacity to run charging pumps (75 kw each).
IF NOT, THEN evaluate if CNMT RECIRC fans can be stopped (Refer to Attachment CNMT RECIRC FANS).
EOP:
E-1 LOSS OF REACTOR OR SECONDARY COOLANT REV 14 PAGE 9 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 11 Check If Charge.ng Flow Has Been Established:
- 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 key to RWST gate to close seal injection needle valve(s) to affected RCP:
~ V-300A for RCP A V-300B for RCP B
- 2) Ensure HCV-142 open, demand at OS.'.
Charging pump suction aligned to RWST:
o LCV-112B -
OPEN o
LCV-112C -
CLOSED
- b. Manually align valves as necessary..
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 and adjust charging flow to restore PRZR level
- 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).
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E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 10 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check Zf SZ Should Be Terminated:
a.
RCS pressure:
o Pressure GREATER THAN 1625 psig
[1825 psig adverse CNMT]
o Pressure
- STABLE OR INCREASING a.
Do NOT stop SI pumps.
Go to Step 14.
b.
RCS subcooling based on core exit T/Cs
- GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
Do NOT stop SI pumps.
Go to Step 14.
- c. Secondary heat sink:
o Total feed flow to intact S/Gs
- GREATER THAN 200 GPM
-OR-
- c. IF neither condition satisfied, THEN do NOT stop SI pumps.
Go to Step 14.
o Narrow range level in at least one intact S/G-GREATER THAN 5%
[25% adverse CNMT]
d.
PRZR level
- GREATER THAN 5%
[30$ adverse CNMT]
d.
Do NOT stop SI pumps.
Perform the following:
- 1) IF normal PRZR spray available, THEN try to stabilize RCS pressure with PRZR spray.
2)
Go to Step 14.
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E-l TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE ll of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 13 Go To ES-1.1, SZ TERMZNATZON, Step 1
- 14 Monitor Zf CNMT Spray Should Be Stopped:
a.
CNMT spray pumps RUNNING b.
Check the following:
o CNMT pressure
- LESS THAN 4 PSIG a.
Go to Step 15.
- b. Continue with Step 15.
WHEN BOTH conditions satisfied, THEN do Steps 14c through f.
o Sodium hydroxide tank level LESS THAN 55%
- c. Reset CNMT spray d.
Check NaOH tank outlet valves CLOSED
~ AOV-836A
~ AOV-836B
- d. Place NaOH tank outlet valve controllers to MANUAL and close valves.
e.
Stop CNMT spray pumps and place in AUTO
- f. Close CNMT spray pump discharge valves
~ MOV-860A
~ MOV-860B
~ MOV-860C
.+ MOV-860D
EOP:
E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 12 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
o RCS PRESSURE SHOULD BE MONITORED.
IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG
[465 PSIG ADVERSE CNMT], THEN THE RHR PUMPS MUST BE MANUALLYRESTARTED TO SUPPLY WATER TO THE RCS.
- 15 Monitor Zf RHR Pumps Should Be Stopped:
a.
Check RCS pressure:
- 1) Pressure
- GREATER THAN 250 psig
[465 psig adverse CNMT]
2)
RCS pressure STABLE OR INCREASING 1)
Go to Step 17.
2)
Go to Step 16.
Check pressures in both S/Gs STABLE OR INCREASING
- a. Return to Step l.
b.
Check pressures in both S/Gs-GREATER THAN 100 PSIG c.
Check RCS.pressure STABLE OR DECREASING
- b. Monitor RCS pressure.
IF RCS pressure does NOT increase after faulted S/G dryout, THEN go to Step 17,
- c. Return to Step l.
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E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV 14 PAGE 13 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check Zf Emergency D/Gs Should Be Stopped:
- a. Verify AC emergency busses energized by offsite power:
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. Perform, the following:
- 1) Close non-safeguards bus tie breakers as necessary:
~ 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) Ensure condenser steam dump mode control in MANUAL.
- 4) Restore power to MCCs:
~ A from Bus 13
~
B from Bus 15
~
E from Bus 15
~ F from Bus 15 5)
WHEN bus 15 restored, THEN reset control room lighting breaker.
- 6) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.
- 7) 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)
Qi
EOP:
E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 14 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Verify CNMT Sump Recirculation Capability:
a.
Check RHR system:
Bus 14 and bus 18 ENERGIZED
- a. Restore power to at least one train of emergency AC busses.
IF at least one train of cold leg recirculation capability can NOT be verifie'd, THEN go to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step l.
o MCC C -
ENERGIZED o
Bus 16 and bus 17 ENERGIZED o
MCC D - ENERGIZED 2)
RHR pumps and valves OPERABLE b.
Check SW pumps
- AT LEAST 2 PUMPS AVAILABLE
- c. Dispatch AO to check AUX BLDG sub-basement for RHR system leakage (AUX BLDG sub-basement key may be required)
- b. Attempt to restore at least 2
IF only 1 SW pump available, THEN refer to Attachment MIN SW for additional guidance.
cd IF any RHR pump seal leakage indicated, THEN leakage should be evaluated and isolated if necessary.
EOP:
E-1 TITLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 15 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Evaluate Plant Status:
a.
Check auxiliary building radiation
-.NORMAL
~ Plant vent iodine (R-10B)
~ Plant vent particulate (R-13)
~ Plant vent gas (R-14)
~
CCW liquid monitor (R-17)
~ LTDN line monitor (R-9)
+ CHG pump room (R-4)
- b. Direct HP to obtain following samples:
~ RCS activity
~ BASTs boron
- a. Notify HP and refer to appropriate AR-RMS procedure.
IF the cause is a loss of RCS inventory outside CNMT, THEN go to ECA-1.2, LOCA OUTSIDE CONTAINMENT, Step 1.
- c. Verify adequate Rx head cooling:
- 1) Verify at least one control rod shroud 'fan - RUNNING
- 2) Verify one Rx compartment cooling fan - RUNNING
- 1) Manually start one fan as power supply permits (45 kw)
- 2) Perform the following:
r o
Dispatch AO to reset UV relays at MCC C and MCC D.
\\
o Manually start one fan as power supply permits (23 kw)
0
EOP:
E-1 LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 16 of 16 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 20 Check If RCS Coooldown And Depressurisation Is Required:
a.
RCS pressure
- GREATER THAN 250 psig
[465 psig adverse CNMT]
b.
Go to ES-1.2, POST LOCA COOLDOWN AND DEPRESSURIZATION, Step 1
- a. IF RHR pump flow greater than 475
- gpm, THEN go to Step 21.
21 Check If Transfer To Cold Leg Recirculation Is Required:
a.
RUST level
- LESS THAN 28%
b.
Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1
-END-
- a. Return to Step 18.
LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 PAGE 1 of 1 E-1 APPENDIX LIST TITLE 1)
RED PATH
SUMMARY
2)
FIGURE MIN SUBCOOLING 3)
ATTACHMENT CNMT RECIRC 4)
ATTACHMENT D/G STOP 5)
ATTACHMENT SD-1 6)
ATTACHMENT SI/UV 7)
ATTACHMENT MIN SW 8)
ATTACHMENT AUX BLDG SW 9)
ATTACHMENT SW LOADS IN CNMT 10)
FOLDOUT PAGES
Il
EOP:
E-1 LOSS OF REACTOR OR SECONDARY COOLANT REV:
14 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 54'254 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
EOP:
E-1 TITLE:
LOSS OF RFACTOR OR SECONDARY COOLANT REV 14 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 1500 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREHENTS 20 PSIG SUBCOOLED REGION ADVERSE CNHT NORMAL CNHT INADE(UATE SUBCOOLING REGION TEHPERATURE INCREHENTS 10'F 200 250
- 300 350 400 450 500 550.
600 650 700 CORE EXIT SATURATION TEHPERATURE ('F)
EOP:
E-1 T1TLE:
LOSS OF REACTOR OR SECONDARY COOLANT REV 14 PAGE 1 of 1 FOLDOUT PAGE 1 ~
SI REINITIATION CRITERIA 2 ~
IF EITHER 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 5%
[304 adverse CNMT]
SI TERMINATION CRITERIA IF ALL conditions listed below occur, THEN go to ES-l.l, 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 54
[30% adverse CNMT]
3.
SECONDARY INTEGRITY CRITERIA 4 ~
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.
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 1.
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.
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 1 of 28 ROCHESTER GAS AND ELECTRIC CORPORATION CzINNA STATION CONTROLLED COPY NUMBER RESPONSIB MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
EOP:
ECA-1.1 T1TLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 12 PAGE 2 of 28 A.'URPOSE This procedure provides actions to restore emergency coolant recirculation capability, to delay depletion of the RWST by adding makeup and reducing outflow, and to depressurize the RCS to minimize break flow.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-l, LOSS OF REACTOR OR SECONDARY COOLANT, when cold leg recirculation capability cannot be verified.
b ~
ES 1
3 ~
TRANSFER TO COLD LEG RECIRCULATION/
when recirculation cannot be established or maintained.
c ~
ECA 1 ~ 2 g LOCA OUTSIDE CONTAINMENTg when a
LOCA outside containment cannot be isolated.
'v 0
EOP:
ECA-1.1 T1TLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 3 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF EMERGENCY COOLANT RECIRCULATION CAPABILITY IS RESTORED DURING THIS PROCEDURE, FURTHER RECOVERY ACTIONS SHOULD CONTINUE BY RETURNING TO PROCEDURE AND STEP IN EFFECT.
o IF SUCTION SOURCE IS LOST TO ANY SI OR CNMT SPRAY PUMP, THE PUMP SHOULD BE STOPPED.
NOTE:
Adverse CNMT values should be used whenever CNMT ~ressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr.
1 Verify CNMT Sump Recirculation Capability:
a.
Check RHR system:
o RHR pumps
- OPERABLE o
RHR suction valves from sump B -
- a. Manually or locally try to restore at least one train (Refer to Attachment RHR SYSTEM to identify minimum components for one train).
~ MOV-850A
~ MOV-850B o
RHR pump discharge to Rx vessel deluge valves OPERABLE
~ MOV-852A
~ MOV-852B o
CCW pumps
- OPERABLE o
~ MOV-738A
~ MOV-738B b.
Check at least two SW pumps RUNNING
- b. Manually start SW pumps as power supply permits (258 kw each).
EOP:
ECA-1.1 T1TLE:
I LOSS OF EMERGENCY COOLANT RECIRCULATION REV'2 PAGE 4 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Add Makeup To RWST As Ne'cessary o
Refer to S-9J, BLENDING TO RWST
-OR-o Refer to S-3.2D, TRANSFERRING WATER FROM CVCS HUT(S)
-OR-o Refer to Attachment SFP-RWST CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).
NOTE:
TDAFW pump flow control valves fail open on loss of IA.
- 3 Moni.tox 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, THEN stop feed flow to that S/G.
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 5 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Shutdown margin should be monitored during RCS cooldown (Refer to Figure SDM).
4 Initiate RCS Cooldown To Cold Shutdown:
- a. Establish and maintain cooldown rate in RCS cold legs
- LESS THAN 100'F/HR b.
Dump steam to condenser from intact S/G(s)
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open TDAFW pump steam supply valves.
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass valves.
- 2) Open priming air ejector steam supply root valve, V-3578.
- 3) Open 1A and 1B priming air ejector isolation valves.
~ V-3580
~ V-3581 IF no intact S/G available, THEN use faulted S/G.
EOP:
ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV 12 PAGE 6 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5 Verify CNMT RECZRC Fans Running:
- a. All fans
- RUNNING
- b. Charcoal filter dampers green status lights - EXTINGUISHED
- a. Manually start fans.
- b. Dispatch personnel with relay rack key to locally open dampers using trip relay pushbuttons in relay room racks.
~ AUX RELAY RACK RA-2 for fan A
~ AUX RELAY RACK RA-3 for fan C
- 6 Monitor RWST Level - GREATER THAN 15%
Go to Step 25.
EOP:
ECA-1.1 T1TLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 7 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7 Determine CNMT Spray Recpxirements:
- a. Determine number of CNMT spray pumps required from table:
RWST LEVEL CNMT PRESSURE GREATER THAN 60 PSIG CNMT RECIRC FANS RUNNING CNMT SPRAY PUMPS REQUIRED GREATER THAN 28%
OR 1 2
OR 3
ALL BETWEEN 15'ND28'ESS THAN 28 PSIG GREATER THAN 60 PSIG BETWEEN 28 PSIG AND 60 PSIG LESS THAN 28 PSIG 0,
1, 2,
OR 3
ALL LESS THAN 15$
b.
CNMT spray pumps running EQUAL TO MINIMUM NUMBER REQUIRED
- b. Manually operate CNMT spray pumps as necessary.
IF CNMT spray pump(s) must be
- stopped, THEN place switch in PULL STOP.
EOP:
ECA-1 ~ 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 8 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
8 Reset SI If Necessary 9 Establish One Train Of SI Flow
- a. SI pumps
- LESS THAN THREE RUNNING a.
Stop one SI pump.
b.
RCS pressure
- LESS THAN 250 psig
[465 psig adverse CNMT]
c.
RHR pump ONLY ONE RUNNING
- b. Stop RHR pumps and go to Step 10.
IF no RHR pumps running, THEN start one RHR pump.
10 Verify No Backflow From RRST To Sump:
a.
Any RHR suction valve from sump B -
OPEN
~ MOV-850A
~ MOV-850B
b.
~ suction (MOV-856) -
CLOSED
- b. Perform the following:
- 1) Place MOV-856 key switch to ON
- 2) Manually close valve IF valve can NOT be closed
- manually, THEN direct AO to locally close valve.
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 9 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED ll Reset CI:
a.
Depress CI reset pushbutton
- b. Verify annunciator A-26, CNMT ISOLATION - EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Depress CI reset pushbutton.
12 Verify Adequate SR Flow:
a.
Check at least two SW pumps RUNNING
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
- a. Manually start SW pumps as power supply permits (258 kw each).
IF less than two SW pumps
- running, THEN perform the following:
- 1) Ensure SW isolation.
- 2) Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1) 3)
Go to Step 15.
EOP:
ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 10 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 13 Establish IA to CNMT
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed CLOSED
-OR-o Bus 15 normal feed CLOSED
- b. Verify SW isolation valves to turbine building -
OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- c. Verify at least two air compressors RUNNING d.
Check IA supply:
o Pressure GREATER THAN 60 PSIG o
Pressure
- STABLE OR INCREASING
OPEN a.
Perform the following:
- 1) Close non-safeguards bus tie breakers:
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie
- 2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).
IF NOT, THEN evaluate if CNMT RECIRC fans should be stopped (Refer to Attachment CNMT RECIRC FANS).
3)
WHEN bus 15 restored, THEN reset control room lighting.
- b. Manually align valves.
- c. Manually start air compressors as power supply permits (75 kw each)
~
IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.
- d. Perform the following:
- 1) Continue attempts to restore IA'(Refer to AP-IA.l, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 14.
WHEN IA restored, THEN do Steps 13e and f.
I i
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 11 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 Establish Required Charging Line Plow:
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 close seal injection needle valves to affected RCP:
- b. Establish 20 gpm total charging flow
~ RCP A, V-300A
~ RCP B, V-300B
- 2) Ensure HCV-142 demand at 0%.
- 3) Start one charging pump.
I
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV 12 PAGE 12 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP(S)
SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
15 Check RCP Status:
a.
RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING a.
Stop all RCPs and go to Step 16.
b.
- AT LEAST ONE RUNNING
- b. Try to start an RCP:
- 1) Establish conditions for starting an RCP o
Bus 11A or 11B energized o
Refer to Attachment RCP START
- c. Stop all but one RCP
- 2) Start one RCP.
A 0
EOP:
ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 13 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- 16 Monitor SI Termination Criteria:
a.
RCS subcooling based on core exit T/Cs - GREATER THAN 50'F USING FIGURE MIN SUBCOOLING Limit RCS injection flow to that required to remove decay heat:
o Determine required injection flow using Figure MIN RCS INJECTION
" b.
Check RVLIS indication:
o Level (no RCPs)
- GREATER THAN 68%
[73% adverse CNMT]
-OR-o Fluid fraction (any RCP running)
GREATER THAN 80%
o Stop SI pumps as necessary to establish and maintain minimum required SI flow.
o IF required injection flow is less than 100
- gpm, THEN establish required charging flow and go to Step 17.
IF required injection flow is greater than 100 gpm, THEN perform the following:
a.
Ensure one SI pump running
- b. Establish minimum charging flow for RCP seal injection.
(Locked valve key required.)
d.
Go to Step 18.
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 14 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Stop SI And RHR Pumps And Place In Auto 18 Verify Adequate RCS Makeup Flaw:
a.
Check RVLIS indication:
o
-Level (no RCPs)
GREATER THAN 68%
[73% adverse CNMT]
-OR-o Fluid fraction (any RCP running)
- GREATER THAN 80%
b.
Core exit T/Cs
- STABLE-OR DECREASING
- b. Increase RCS injection flow to maintain core exit T/Cs stable or decreasing.
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 15 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE: If normal RCP support conditions can NOT be satisfied, then any running RCP(s) should be stopped.
19 Depressurize RCS To Decrease RCS Subcooling:
a.
Check RCS subcooling based on core exit T/Cs GREATER THAN 20'F USING FIGURE MIN SUBCOOLING a.
Go to Step 20.
- b. Normal PRZR spray
-AVAILABLE b.
Use one PRZR PORV.
IF IA NOT available, THEN refer to Attachment N2 PORVS.
- 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%
[65% adverse CNMT]
d.
WHEN either condition met, THEN stop RCS depressurization e.
Check RCS subcooling GREATER THAN O'F USING FIGURE MIN SUBCOOLING
- e. Increase RCS makeup flow as necessary to restore subcooling.
EOP:
ECA-1 ~ 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION'EV: 12 PAGE 16 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 20 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'F a.
Go to Step 21.
b.
RCS pressure LESS THAN 400 psig [300 psig adverse CNMTj
- c. Place letdown pressure controller (PCV-135) in MANUAL CLOSED b.
Go to Step 21.
d.
Check following valves OPEN
~ AOV-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx
~ At least one letdown orifice valve (AOV-200A, AOV-200B, or AOV-202)
- e. Verify pressure on PI-135 LESS THAN 400 PSIG
- d. Perform the following:
- 1) Reset both trains of XY relays for AOV-371 and AOV-427.
- 2) Open AOV-371.
- 3) Place AOV-427 switch to OPEN.
4)
Open one letdown orifice valve.
e.
Go to Step 21.
- f. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
0 0
EOP:
ECA-1 ~ 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 17 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 21 Check If SI ACCUMs Should Be Isolated:
- a. Both RCS hot leg temperatures LESS THAN 400'F
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865
- a. Continue with Step 22.
WHEN both RCS hot leg temperatures less than 400'F, THEN do Steps
- 21b, c and d.
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
- d. Locally reopen breakers for MOV-841 and MOV-865
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B 2)
Open HCV-945.
- 22 Monitor RCP Operation:
a.
- ANY RUNNING b.
Check the following:
o RCP ¹1 seal D/P -
GREATER THAN 220 PSID, a.
Go to Step 23.
- b. Stop affected RCP(s).
o Check RCP seal leakage WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF
~ ~
EGP:
ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV'2 PAGE 18 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 23 Check Core Exit T/Cs-GREATER THAN 200'F Go to Step 38.
24 Check RWST Level - LESS THAN 15%
Return to Step 1.
25 Minimize RWST Outflow:
a.
Any SI pump(s)
RUNNING
- b. Stop all but one SI pump c.
Check charging pump suction from RWST (AOV-112B) -
OPEN
- a. IF charging pump suction aligned to RWST, THEN perform the following:
- 2) Start one SI pump and verify flow.
t
- 3) Stop running charging pumps.
4)
Go to Step 25e.
c.
Go to Step 25e.
- d. Stop all charging pumps e.
Stop both CNMT spray pumps
- f. Stop both RHR pumps
i
~ ~
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 19 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 26 Check SZ pump flow - STABLE IF SI flow zero or erratic, THEN
'top running SI pump.
27 Try To Add Makeup To RCS From VCT a.
Check VCT level GREATER THAN 5%
- b. Verify charging pumps aligned to VCT o
LCV-112C -
OPEN o
LCV-112B -
CLOSED a.
Stop charging pumps taking suction from VCT and continue with Step 28.
WHEN VCT level greater than 5%,
THEN do Steps 27b and c.
- b. Manually align valves as necessary.
- c. Start charging pumps as necessary to establish two pumps running
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 20 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 28 Establish Maximum VCT Makeup:
a.
Check RMW control armed RED LIGHT LIT b.
Check VCT level
- LESS THAN 20%
c.
Check VCT makeup system-OPERATING IN AUTO
- d. Increase VCT makeup flow
- 1) Start both RMW pumps
- 2) Start both boric acid pumps
- 3) Adjust RMW controller (HC-111) to maximum flow from table a.
Place RMW mode switch in AUTO and place RMW control switch to START.
- b. Continue with Step 29.
WHEN VCT level less than 20%,
THEN do Steps
- 28c, d and e.
- c. Perform the following:
- 1) Open makeup system valves.
~ AOV-110B
~ AOV-llOC
~ AOV-111
- 2) Start BA transfer pumps and RMW pumps.
- 3) Open boric acid flow control valve (AOV-llOA).
BAST CONC (PPM) 8750 (5%)
10500 (6%)
12250 (7%)
14000 (8%)
15750 (9%)
17500 (10%)
FLOW (GPM) 40 50 60 70 80 90
- 4) Adjust boric acid flow controller (HC-110A) in MANUAL to 9.5 gpm
- e. Adjust charging pump speed to stabilize VCT level
~ e EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 21 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 29 Try To Add Makeup To RCS From Alternate Source:
~ MOV-841
~ MOV-865 IF valves were closed to prevent SI ACCUM nitrogen injection, THEN go to Step 34.
IF NOT, THEN perform the following:
4
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C b.
Open SI ACCUM discharge valves.
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 22 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 31 Depressurize All Intact S/Gs To 785 PSIG:
a.
Check S/G pressures GREATER THAN 785 PSIG a.
Go to Step 32.
b.
Dump steam to condenser at maximum rate
- b. Manually or locally dump steam at maximum rate from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply v'alves to TDAFW pump
-OR-o Dispatch AO to perform the.
following:
- 1) Open S/G MSIV bypass valves.
- 2) Open priming air ejector steam isolation valves
~ V-3580
~ V-3581 c.
Check S/G pressures LESS THAN 785 PSIG
- c. Return to Step 3lb.
- d. Stop S/G depressurization
~ I
EOP:
ECA-1.1 TITLE:
-LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 23 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
The intent of Step 32 is to depressurize S/Gs more slowly, but at a rate that will maintain required RVLIS level.
32 Depressurize Intact S/Gs To 200 PSIG Slowly To Inject SI ACCUMs:
a.
Dump steam to condenser as necessary to maintain appropriate RVLIS indication:
o Level (no RCPs)
BETWEEN 68%
AND 73%
[73% AND 76% adverse CNMTj
- a. Manually or locally dump steam from intact S/G(s) to maintain appropriate RVLIS indication:
o Use S/G ARVs
-OR-
-OR-o Fluid fraction (any RCP running)
BETWEEN 80%
AND 90%
o Open steam supply valves to TDAFW pump
-OR-o Dispatch AO to perform the following:
l) Open affected S/G MSIV bypass valve.
- 2) Open priming air ejector steam isolation valves
~ V-3580
~ V-3581 b.
Check S/G pressures
- LESS THAN 200 PSIG
- c. Stop S/G depressurization
- b. Return to Step 32a.
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 24 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 33 Check If SI ACCUMs Should Be Isolated:
- a. Both RCS hot leg,temperatures LESS THAN 400'F a.
Continue with Step 34.
WHEN both RCS hot leg temperatures less than 400'F, THEN do Steps
- 33b, c and d.
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C cd Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs
- d. Locally reopen breakers for MOV-841 and MOV-865
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
- 34 Monitor RCP Operation:
a.
- ANY RUNNING'.
Check the following:
o RCP ¹1 seal D/P -
GREATER THAN 220 PSID a.
Go to Step 36.
b.
Stop affected RCP(s).
o Check RCP seal leakage-WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECZRCULATZON
, REV:
12 PAGE 25 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 35 Check SZ Pump Flow - STABLE IF SI flow zero or erratic, THEN stop running SI pump.
36 Depressuri.ze All'Zntact S/Gs To Atmosphere.c Pressure:
- a. Maintain cooldown rate in RCS cold legs LESS THAN 100'F/HR b.
Dump steam to condenser
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply valves to TDAFW pump
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass valves.
- 2) Open priming *air ejector steam isolation valves
~ V-3580
~ V-3581
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 26 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 37 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'F
- a. Return to Step 35:
b.
RCS pressure
- LESS THAN 400 psig [300 psig adverse CNMTj
- c. Place letdown pressure
~
controller in MANUAL CLOSED
- b. Return to Step 35.
d.
Check following valves OPEN
~ AOV-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx
~ At least one letdown orifice valve (AOV-200A, AOV-200B, or AOV-202)
- d. Perform the following:
- 1) Reset both trains of XY relays for AOV-371 and AOV-427.
2)
Open AOV-371 and AOV-427.
3)
Open one letdown orifice valve.
- e. Verify pressure on PI-135 LESS THAN 400 PSIG
- e. Return to Step 36.
- f. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
EOP:
ECA-1 ~ 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 27 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 38 Maintain RCS Heat Removal:
a.
Use RHR system if in service b.
Dump steam to condenser from intact S/Gs
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply valves to TDAFW pump
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass
,valves')
Open priming air ejector steam isolation valves
~ V-3580
~ V-3581 IF no intact S/G available and RHR system NOT in service, THEN use faulted S/G.
~ I
~ ~
0
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 28 of 28 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
This procedure should be continued while obtaining CNMT hydrogen sample in Step 39.
39 Check CNMT Hydrogen Concentration:
- b. Hydrogen concentration LESS THAN 0.5%
40 Consult TSC
-END-
EOP:
ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
12 PAGE 1 of 1
ECA-1.1 APPENDIX LIST TITLE PAGES 1)
FIGURE MIN SUBCOOLING 2)
FIGURE SDM 3)
FIGURE MIN RCS INJECTION 4)
FIGURE RCP SEAL LEAKOFF 5)
ATTACHMENT RHR COOL 6)
ATTACHMENT SFP-RWST 7)
ATTACHMENT RCP START 8)
ATTACHMENT SD-1 9)
ATTACHMENT CNMT RECIRC FANS 10)
ATTACHMENT RHR SYSTEM 11)
ATTACHMENT N2 PORVS
,4 I I ~
EOP:
ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
20 PAGE 1 of 19 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIBLE AGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
EOP:
ES-1.3 TITLE:
TRANSFER TO'OLD LEG RECIRCULATION REV:
20 PAGE 2 of 19 A.
PURPOSE This procedure provides the necessary instructions for'transferring the Safety Injection system and Containment Spray system to recirculation modes of operation.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure may be entered from:
a.
E-1, LOSS OF REACTOR OR SECONDARY COOLANT, or, b.
ECA-0.2, LOSS OF ALL AC POWER WITH SI REQUIRED, or, c.
ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF ALL STEAM GENERATORS, or, d.
FR-C.1,
RESPONSE
TO INADEQUATE CORE COOLING, or, e.
FR-C.2,
RESPONSE
TO DEGRADED CORE COOLING, or, f.
FR-C.3,
RESPONSE
TO SATURATED CORE COOLING, or, g.
FR-H.l,
RESPONSE
TO LOSS OF SECONDARY.HEAT SINK, or, h.
FR-Z.1,
RESPONSE
TO HIGH CONTAINMENT PRESSURE, on low RWST level.
i.
Other procedures whenever RWST level reaches the switchover setpoint (284).
,t, l
EOP:
ES-1.3 J ITl.E:
TRANSFER TO COLD LEG RECIRCULATION REV:
20 PAGE 3 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
INJECTION FLOW TO THE RCS SHALL BE MAINTAINEDAT ALL TIMES.
o IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
o CONSULT WITH RADIATION PROTECTION BEFORE DISPATCHING PERSONNEL TO AUXILIARYBUILDING.'WITCHOVERTO RECIRCULATION MAY CAUSE HIGH RADIATION LEVELS.
NOTE:
o FOLDOUT page should be open and monitored periodically.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr."
1 Verify CNMT Sump B Level-GREATER THAN 113 INCHES IF RWST level is less than 28%
AND CNMT sump B level is less than 113 inches, THEN go to ECA-1.2, LOCA OUTSIDE CONTAINMENT, Step 1.
NOTE:
Steps 2 through 12 should be performed without delay.
FR procedures should not be implemented prior to completion of these steps.
2 Reset SI
EOP:
ES-1.3 T1TLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
20 PAGE 4 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
IF D/Gs supp'ying emergency AC busses, THEN non-essential loads may be shed as necessary to allow start of additional SW pumps.
I 3 Establish Adequate 8% Flow:
- 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. Start additional SW pumps as power supply permits (258 kw each).
IF only 1 SW pump
,ope'rable, THEN perform the following:
- 1) Ensure 'Attachment MIN SW is complete.
2)
Go to Step 4
~
- GREATER THAN 5000 GPM
- c. Perform the following:
~ MOV-4609 and MOV-4780
~ MOV-4663 and MOV-4733
- 2) Direct AO to locally adjust total SW flow to the CCW Hxs to between 5000 gpm and 6000 gpm (V-4619 and V-4620).
~ SFP Hx A (V-4622)
~ SFP Hx B (V-8689)
- 4) Verify SW portions of Attachment SD-1 are complete.
EOP:
ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
20 PAGE 5 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Establi.sh CCP. flaw to RHR Hxs:
a.
Check both CCW pumps RUNNING
- a. Start CCW pumps 'as power supply permits (124 kw each).
- b. Dispatch AO to locally open valves.
~ MOV-738A
~ MOV-738B
- * *.* * * * * * * * * * * * * * * *
- 4 * * * * * * * * *'
CAUTION o
CONSULT WITH RADIATION PROTECTION BEFORE DISPATCHING PERSONNEL TO AUXILIARYBUILDING.
SWITCHOVER TO RECIRCULATION MAY CAUSE HIGH RADIATION LEVELS.
o THE RHR HX OUTLET. VALVES (HCV-624 AND HCV-625) WILL FAIL OPEN ON LOSS OF INSTRUMENT AIR PRESSURE 5
Check RHR Plow:
o Both RHR pumps
- RUNNING o
RHR flow (FI-626)
LESS THAN 1500 GPM PER OPERATING PUMP Manually adjust RHR Hx outlet valves equally to reduce flow to less than 1500 gpm per operating pump
~
~ RHR Hx B, HCV-624
~ RHR Hx A, HCV-625 IF'low can NOT be reduced
~ RHR Hx B, V-715
~.RHR Hx A, V-717
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TITLE:
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20 PAGE 6 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION ANY PUMPS TAKING SUCTION FROM RWST SHOULD BE STOPPED UPON REACHING RWST LO-LO LEVEL ALARM.
6 Check ZP Unnecessary Pumps Can Be Stopped:
- a. Three SI pumps
- RUNNING
- b. Stop SI pump C and place both switches in PULL STOP a.
Go to" Step 6c.
- c. Both CNMT spray pumps
- RUNNING
- d. Pull stop one CNMT spray pump e.
Stop both RHR pumps and place in PULL STOP
- c. Pull stop any idle CNMT spray pump and go to Step 6e.
Q i
'I J I
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20 PAGE 7 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7 Verify RHR System Alignment:
- a. Verify the following valves CLOSED o
RHR suction valves from loop A hot leg
~ MOV-700
~ MOV-701 a.
Ensure at least one suction valve and one discharge valve closed.
o RHR discharge valves to loop B cold leg
~ MOV-720
~ MOV-721
- b. Verify RHR pump suction crosstie valves OPEN
~ MOV-704A
~ MOV-704B
- b. Manually open valves. If valves can NOT be opened, THEN dispatch AO to locally open valves.
- c. Verify the following valves OPEN o
RHR pump discharge to Rx vessel deluge valves
~ MOV-852A
~ MOV-852B c.
Ensure at least one valve in each set open.
(inside CNMT)
~ MOV-851A
~ MOV-851B
CLOSED
~ MOV-1813A
~ MOV-1813B
- d. Manually close valves.
0 ': ~
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20 PAGE 8 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION RHR FLOW INDICATED ON FI-626 SHOULD BE LIMITED TO 1500 GPM PER OPERATING PUMP TO ENSURE OPTIMUM PUMP PERFORMANCE.
8 Initiate RHR Sump Recirculation:
a.
Close RWST outlet valve to RHR pump suction, MOV-856 (turn on DC power key switch) b.
Open both RHR suction valves from sump B (outside CNMT) o MOV-850A -
OPEN o
MOV-850B -
OPEN
- a. Dispatch AO to locally close valve and continue with Step 8b.
- b. IF only one valve will open, THEN perform the following:
- 1) Initiate only one train of RHR recirculation (Refer to Attachment RHR NPSH for further guidance).
2)
Go to 8d.
- c. Start both RHR pumps
- d. Verify at least one RHR pump-RUNNING IF neither valve will open, THEN refer to Attachment RHR PRESS REDUCTION for further guide'nce.
- d. IF no RHR pump can be started, THEN go to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1.
~ * ~.".
~
I d
~
4 l
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20 PAGE 9 of 19 STEP
'CTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
The TSC should be requested to establish periodic monitoring of the AUX BLDG sub-basement, as radiological conditions permit, to monitor RHR pump operation.
9 Check RWST Level - LESS THAN 154 DO NOT continue with this procedure until RWST level is less than 15%.
10 Stop All Pumps Suppli.ed Prom RWST:
a.
Stop all SI pumps and place in PULL STOP
- b. Stop all charging pumps
- c. Stop operating CNMT spray pump and place in PULL STOP
- d. Check CNMT pressure
- LESS THAN 28 PSIG d.
Go to Step 11.
- e. Reset CNMT spray if necessary
- f. Close CNMT spray pump discharge valves
~ MOV-860A
~ MOV-860B
~ MOV-860C
~ MOV-860D
1
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, TRANSFER TO COLD LEG RECIRCULATION REV:
20 PAGE 10 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION RHR FLOW MUST BE MAINTAINED LESS THAN 1500 GPM PER OPERATING RHR PUMP AS DETERMINED BY THE TOTAL OF FI-931A, FI-931B AND FI-626 INDICATIONS.
ll Align SZ And CNMT Spray For Sump Recirculation:
a: Verify SI pump suction valves from BASTs CLOSED
~ MOV-826A and MOV-826B
~ MOV-826C and MOV-826D a.
Ensure at least one valve in each flowpath closed.
~ MOV-896A
+ MOV-896B
- b. Ensure at least one valve closed.
- c. Close SI pump RECIRC valves
~ MOV-898
~ MOV-897 c.
Ensure at least one valve closed.
OPEN
- d. Ensure at least one valve open.
~ MOV-825A
~ MOV-825B
MOV-857A and MOV-857C -
OPEN o
MOV-857B -
OPEN e.
Ensure at least one flowpath aligned from RHR pump(s) to SI and CS pump suction header (Refer to Attachment RHR SYSTEM).
IF neither flow path 'can be
- aligned, THEN refer to Attachment RHR PRESS REDUCTION for further guidance.
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20 PAGE 11 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION SI PUMPS SHOULD BE STOPPED IF RCS PRESSURE IS GREATER THAN THEIR SHUTOFF HEAD PRESSURE.
NOTE:
Operation of SI pump C is preferred since it delivers to both RCS loops.
12 Verify Adecpxate RCS Makeup Plow a.
RCS pressure
- LESS THAN
'225 psig [425 psig adverse CNMT]
b.
RHR in)ection flow adequate:
o Core exit T/Cs LESS THAN REQUIREMENTS OF FIGURE RHR INJECTION a.
Perform the following:
- 1) Check RCS conditions:
o RCS subcooling based on core exit T/Cs greater than Figure MIN SUBCOOLING.
o PRZR level greater than 5%
[30$ adverse CNMT].
IF either condition NOT met, THEN start one SI pump.
2)
Go to Step 13.
- b. Start one SI pump.
o Check RVLIS level (no RCPS)
GREATER THAN 43%
[46% adverse CNMT]
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20 PAGE 12 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF A CNMT SPRAY PUMP IS STARTED, THEN CNMT PRESSURE SHOULD BE CLOSELY MONITORED.
CNMT PRESSURE SHOULD NOT BE REDUCED TO LESS THAN 32 PSIG.
13 Cheek, If CNMT Spray Is Requi.red:
a.
CNMT pressure
- GREATER THAN 37 PSIG
- b. Verify CNMT spray pump discharge valves OPEN
~ MOV-860A
~ MOV-860B
~ MOV-860C
~ MOV-860D
- c. Start selected CNMT spray pump
- d. Adjust RHR flow to maintain less than 1500 gpm per operating RHR pump as indicated by the total of FI-931A, FI-931B and FI-626 indications.
e.
Open NaOH tank outlet valves for running pump
~ CS pump A, AOV-836A
~ CS pump B, AOV-836B f.
WHEN CNMT pressure decreases to 32 psig, THEN pull stop CNMT spray pump a.
Perform the following:
- 1) IF CNMT spray previously actuated and NaOH tank level greater than 55%,
THEN consult TSC to determine if CNMT spray should be restarted.
2)
Go to Step 14.
- b. Manually open valve(s) for selected pump.
~
CS pump A, MOV-860A or MOV-860B
~
CS pump B, MOV-860C or MOV-860D
IF neither pump will start, THEN continue with Step 14.
WHEN a CNMT spray pump can be started, THEN do steps
- 13d, e and f.
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TRANSFER TO COLD LEG RECIRCULATION REV'0 PAGE 13 cf 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 Verify Adequate Core Cooling:
o Core exit T/Cs
- STABLE OR DECREASING o
STABLE OR INCREASING o
GREATER THAN 43%
[46% adverse CNMT)
IF both RHR pumps running, THEN ensure two SI pumps running.
IF only one RHR pump running, THEN perform the following:
a.
Ensure one SI pump running.
b.
WHEN CNMT spray pumps stopped, THEN start one additional SI pump 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.
- 15 Monitor Intact S/G Levels:
- a. Narrow range level - GREATER THAN 5%
[25% adverse CNMTJ
- 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.
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20 PAGE 14 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 16 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 cern 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) Verify at least one control rod shroud fan" - RUNNING
- 1) Manually start one fan as power supp).y permits (45 kw)
- 2) Verify one Rx compartment cooling fan - RUNNING
- 2) Perform the following:
o Dispatch AO to reset UV relays at MCC C and MCC D.
o Manually start one fan as power supply permits (23 kw)
- d. Verify Attachment SD-1 COMPLETE
f4
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ES-1.3 T1TLE TRANSFER TO COLD LEG RECIRCULATION REV 20 PAGE 15 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check Zf 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)
a
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20 PAGE 16 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Check Zf SZ ACCUMs Should Be Isolated:
- a. Both RCS hot leg temperatures LESS THAN 400'F
~ 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
- d. Locally reopen breakers for MOV-841 and MOV-865 a.
Continue with Step 19.
WHEN-both RCS. hot leg temperatures less than 400'F, THEN do Steps 18b through d.
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.'
l w '4
~
0
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~TITLE ES-1E3 TRANSFER TO COLD LEG RECZRCULATZON REV:
20 PAGE 17 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF FUEL DAMAGE'S SUSPECTED, MAINTAIN S/G PRESSURE SLIGHTLY GREATER THAN RCS PRESSURE.
19 Check Zf Zntact 8/Gs Should Be Depressurized To, RCS Pressure:
a.
RCS pressure LESS THAN INTACT S/G PRESSURES
- b. Direct RP to sample S/Gs for activity
- c. Request TSC perform a dose projection on steaming S/Gs d.
Dose projection for each S/G-ACCEPTABLE e.
Dump steam to condenser from
~
intact S/G(s) until S/G pressure less than RCS pressure a.
Go to Step 20, d.
Do NOT dump steam from a S/G with an unacceptable dose projection.
- e. IF steam dump to condenser NOT available, THEN dump steam using intact S/G ARVs until S/G pressure less than RCS pressure.
20 Consult TSC to Determine Zf Rz Vessel Head Should Be
, Vented
I$
s 'l II ll
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20 PAGE 18 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
This procedure should be continued while obtaining CNMT hydrogen sample in Step 21.
21 Check CNMT Hydrogen Concentration:
- b. Hydrogen concentration
- LESS THAN 0.5%
NOTE:
The TSC should be consulted before changing recirculation lineups.
22 Check Event Duration-GREATER THAN 19 HOURS APTER EVENT INITIATION Consult TSC to evaluate long term plant status.
23 Place CNMT Spray Pumps Zn PULL STOP 24 Verify Two SZ Pumps - RUNNING Manually start pumps.
25 Check Core Exit T/Cs - LESS THAN REQUIREMENTS OP PZGURE RHR INJECTION Perform the following:
- a. Manually open both PRZR PORVs and block valves.
- b. Verify core exit T/Cs, decreasing to less than requirements of Figure RHR INJECTION.
IF NOT, THEN dump steam from intact S/Gs until core exit T/Cs less than required.
ES-1.3 TRANSFER TO COJD LEG RECIRCULATION REV:
20 PAGE 19 of 19 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 26 Consult TSC To Evaluate Long Term Plant Status
-END-
5
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20 PAGE 1 of 1 ES-1.3 APPENDIX LIST TITLE 1)
RED PATH
SUMMARY
2)
FIGURE RHR INJECTION 3)
FIGURE MIN SUBCOOLING 4)
ATTACHMENT D/G STOP 5)
ATTACHMENT SD-1 6)
ATTACHMENT SD-2 7)
ATTACHMENT RHR SYSTEM 9)
ATTACHMENT AUX BLDG SW 10)
ATTACHMENT SW LOADS IN CNMT 11)
ATTACHMENT MIN SW 12)
ATTACHMENT RHR PRESS REDUCTION 13)
FOLDOUT PAGES
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RED PATH
SUMMARY
a.
SUBCRITICALITY Nuclear power greater than 5%
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%
[46%
adverse CNMT]
c.
HEAT SINK Narrow range level in all S/Gs less than 5%
[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
c
%4'