ML17262A348

Rev 7 to Partial or Complete Loss of Main Feedwater.

ML17262A348
Person / Time
Site:	Ginna
Issue date:	01/18/1991
From:	Schuber T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A347	List: ML17262A346 ML17262A348 ML17262A349 ML17262A351 ML17262A352 ML17262A354 ML17262A356
References
AP-FW.1, NUDOCS 9102070080
Download: ML17262A348 (56)

Text

EGO: TITLE: REV 7 AP-FW. 1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE -/ -, 9 PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

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EOP: T!TLE: REV 7 AP-FW. 1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 2 of 6 A. PURPOSE This procedure provides the steps necessary to respond to a MFW system malfunction resulting in a decrease in or complete loss of main feedwater.

B. ENTRY CONDITIONS/SYMPTOMS

1. SYMPTOMS The symptoms of PARTIAL OR COMPLETE LOSS OF OF MAIN FEEDWATER are;

a. Annunciator G-3(5), S/G A(B) LEVEL DEVIATION i74, lit, or

b. Annunciator G-19(21), S/G A(B) FF < SF CHANNEL ALERT 0.8 x 10~ LB/HR, lit, or

c. Annunciator G-20(22), S/G A(B) LO LEVEL CHANNEL ALERT 304, lit or

d. Annunciator K-18, MAIN FEEDWATER PUMPS TRIPPED, lit, or

e. Low indicated MFW pump suction flow on 1 pump, or

f. MFW pump indicates tripped, or

g. MFW pump discharge valve indicates shut.

c'Ãh EOP: TITLE: REV: 7 AP-FW. 1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 3 of 6 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF., AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.

NOTE: Step 1 is an IMMEDIATE ACTION step.

O 1 Check MFW Requirements:

a. Power - GREATER THAN 50X a. IF power less than 50X, THEN go to Step 2.

b. Both MFV pumps - RUNNING b. IF only one MFV pump has tripped, THEN perform the following:

1) Start all 3 AFV pumps and verify flow.

2) Decrease power rapidly to less than 50X.

3) Go to Step 3.

IF both MFV pumps have tripped, THEN ensure reactor trip and go to E-O, REACTOR TRIP or SAFETY INJECTION.

c. Go to Step 3

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EOP: TITLE: REV 7 AP-FW.1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 4 of 6 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 Verify At Least One MFW Pump Perform the following:

RUNNING

a. Start all 3 AFV pumps and verify flow.

b. IF turbine previously operating, THEN verify turbine trip and go to AP-TURB.1, TURBINE TRIP WITHOUT RX TRIP REQUIRED OR E-O, REACTOR TRIP or SAFETY INJECTION.

IP turbine was NOT previously operating, THEN go to Step 5.

3 Verify MFW Pump Suction Perform the following:

Pressure GREATER THAN 185 PSIG a. Verify standby condensate pump running, if required.

b. Verify condensate bypass valve open.

c. Place trim valve controller to manual and close trim valves.

d. Check if condensate booster pumps have tripped and start as necessary.

4 Verify Adequate MFW Flow: Check MFV regulating valves controlling in AUTO. IP NOT, THEN o A MPV flow - GREATER THAN OR control MFW flow in MANUAL.

h EQUAL TO A STEAM PLOV IF MFV flow can NOT be controlled, o B MFV flow - GREATER THAN OR THEN, trip the turbine and go to EQUAL TO B STEAM FLOW AP-TURB.1, TURBINE TRIP WITHOUT RX TRIP REQUIRED, or E-O, REACTOR TRIP or SAFETY INJECTION.

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EGA: TITLE: REV: 7 AP-FW. 1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 5 of 6 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check Both S/G Levels IF S/G levels can NOT be restored, GREATER THAN 17< AND THEN trip the reactor AND go to TRENDING TO PROGRAM LEVEL E-O, REACTOR TRIP or SAFETY INJECTION.

6 Establish Stable Plant:

Conditions:

a. Tavg - TRENDING TO TREF a. Restore Tavg to normal:

1) Control rods controlling in AUTO. IF NOT, THEN place rod control bank selector switch to MANUAL and adjust control rods, as necessary.

2) Borate if required for power reduction.

b. PRZR pressure - BETWEEN b. Ensure PRZR heaters and spray 2210 PSIG AND 2260 PSIG operating as required, OR if necessary control heaters and spray manually. If PRZR pressure can NOT be controlled, THEN refer to AP-PRZR.1 ABNORMAL PRESSURIZER PRESSURE.

c. Narrow range S/G levels- c. Ensure MFV regulating valves TRENDING TO PROGRAM LEVEL controlling in AUTO, OR control feed water in MANUAL.

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EOP: TITLE: REV: 7 AP-FW.1 PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER PAGE 6 of 6 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check Status Of MFW Control Malfunction

a. Feedwater control malfunction- a. Continue to control feedwater IDENTIFIED as necessary. VHEN malfunction identified, THEN do Steps 7b and c.

b. Restore feedvater control system to AUTO

c. Verify all AFV pumps OFF vith c. Stop running AFV pumps and svitches in AUTO place in AUTO.

NOTE-'efer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.

8 Notify Higher Supervision 9 Return To Procedure Or Guidance In Effect

-END-

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EOP: TITLE: 10 REV ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 1 of 18 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE T SUPERINTEN EN EFFE TI E DATE 6INNA STATION START:

QA NON-QA CATEGORY 1.0 DATE REVIEWED BY: TIME CO,"':

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REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 2 of 18 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-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step 20, on low RWST level.

b. ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF ALL STEAM GENERATORS, Step 10, on low RWST level.

c. Other procedures whenever RWST level reaches the switchover setpoint (284).

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EOP: TITLE:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 3 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o INJECTION FLOV TO THE RCS MUST BE MAINTAINED AT ALL TIMES.

o IF OPFSITE POVER IS LOST AFTER SI RESET, THEN SELECTED SV PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G. MANUAL ACTION VILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

o CONSULT VITH HEALTH PHYSICS BEFORE DISPATCHING PERSONNEL TO AUXILIARY BUILDING.

NOTE: FOLDOUT page should be open and monitored periodically.

1 Verify CNMT Sump B Level IP RWST level is less than 28X AND GREATER THAN 113 INCHES CNMT sump B level is less than 113 inches, THEN go to ECA-1.2, LOCA OUTSIDE CONTAINMENT, Step l.

NOTE: Steps 2 through 8 should be performed without delay. PR procedures should not be implemented prior to completion of these steps.

2 Reset SI

1, EOP:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 4 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Verify Adequate SW Flow To CCW Hx:

a. Verify at least two SW pumps- a. Perform the following:

RUNNING

1) Verify adequate power to operate two SW pumps (258 kw per pump).

IF NOT, THEN shed sufficient non-essential loads.

~ Charging pumps

~ IA compressors

~ PRZR heaters

~ Rx compartment cooling fans

~ Control rod shroud fans

2) Ensure two SW pumps running.

b. Verify AUX BLDG SW isolation b. Perform the following:

valves - OPEN

1) Dispatch AO to locally open

~ MOV-4615 and MOV-4734 valves several turns to

~ MOV-4616 and MOV-4735 minimize hydraulic shock.

2) WHEN notified that both valves in a set partially open THEN manually open valves.

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REV 1O ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 5 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Establish Conditions For RHR Suction Swapover:

a. Place switch for MOV-856, RHR pump suction from RWST, to OPEN (spring returns to AUTO)

b. Establish CCW flow to RHR Hxs:

1) Check both CCW pumps- 1) Start CCW pumps as power RUNNING supply permits.

2) Open CCW valves to RHR Hxs 2) Dispatch AO to locally open valves.

~ MOV-738A

~ MOV-738B CAUTION ANY PUMPS TAKING SUCTION PROM RWST SHOULD BE STOPPED UPON REACHING RWST LO-LO LEVEL ALARM.

5 Check IF Unnecessary Pumps Can Be Stopped:

a. Three SI pumps - RUNNING a. Go to Step 5c.

b. Stop SI pump C and place both switches in PULL STOP

c. Both CNMT spray pumps - RUNNING c. Pull stop any idle CNMT spray pump and go to Step 5e.

d. Pull stop CNMT spray pump on emergency D/G with maximum load

e. Stop both RHR pumps and place in PULL STOP

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EOP:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 6 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: CCW Hx SW outlet valves should be opened equally to distribute flow evenly to both CCW Hxs.

6 Dispatch AO To Locally Perform The Following:

a. Ad)ust Total SW Plow To CCW Hxs a. IP greater than 5000 gpm can NOT To - BETWEEN 5000 GPM AND be established, THEN perform the 6000 GPM following as necessary to establish greater than 5000 gpm:

~ V-4619

~ V-4620 1) Start additional SW pumps as power supply permits (258 kw each).

2) Isolate SW to screenhouse and air conditioning headers.

~ MOV-4609 and MOV-4780

~ MOV-4663 and MOV-4733

3) Dispatch AO to locally isolate SW return from SPP Hxs:

~ SPP Hx A (V-4622)

~ SPP Hx B (V-8634 and V-8685)

4) Verify SW portions of Attachment SD-1 are complete.

b. Close breaker for RHR pump suction from RWST

~ MOV-856> MCC C position 10C

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EOP:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 7 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Verify RHR System Alignment:

a. Verify the following valves- a. Ensure at least one suction CLOSED valve and one discharge valve closed.

o RHR suction valves from loop A hot leg

~ MOV-700

~ MOV-701 o RHR discharge valves to loop B cold leg

~ MOV-720

~ MOV-721

b. Verify the following valves- b. Ensure at least one valve in OPEN each set open.

o RHR pump suction valves

~ MOV-704A

~ MOV-704B o RHR pump discharge to Rx vessel deluge valves

~ MOV-852A

~ MOV-852B o RHR suction from sump B (inside CNMT)

~ MOV-851A

~ MOV-851B

c. Verify RCDT pump suction valves c. Manually close valves.

from sump B - CLOSED

~ MOV-1813A

~ MOV-1813B

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EOP: REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 8 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Initiate RHR Sump Recirculation:

a. Close RWST outlet valve to RHR a. Dispatch AO to locally close pump suction (MOV-856) valve and continue with Step 8b.

b. Open RHR suction valves from b. Perform the following:

sump B (outside CNMT)

1) Ensure at least one RHR

~ MOV-850A suction path from sump B

~ MOV-850B aligned:

o MOV-850A and MOV-851A-OPEN

-OR-o MOV-850B and MOV-851B-OPEN

2) Verify both RHR pump suction crosstie valves open.

~ MOV-704A

~ MOV-704B

3) Verify sump B suction established to operable RHR pump (Refer to Attachment RHR SYSTEM).

IF NOT, THEN go to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step l.

c. Start RHR pumps with suction c. IF no RHR pump can be started, established from sump B (Refer THEN go to ECA-1.1, LOSS OF to Attachment RHR SYSTEM) EMERGENCY COOLANT RECIRCULATION, Step l.

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EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 9 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Check RWST Level LESS THAN DO NOT continue with this procedure 154 until RUST level is less than 15X.

10 Stop All Pumps Supplied From RWST

a. Stop all SI pumps and place in PULL STOP

b. Stop all charging pumps

c. Reset CNMT spray if necessary

d. Stop operating CNMT spray pump(s) and place in PULL STOP

e. Close CNMT spray pump discharge valves

~ MOV-860A

~ MOV-860B

~ MOV-860C

~ MOV-860D

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EOP: TITLE: REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 10 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION SI PUMPS SHOULD BE STOPPED IF RCS PRESSURE IS GREATER THAN THEIR SHUTOFF HEAD PRESSURE.

11 Align SI And CNMT Spray For Sump Recirculation:

a. Verify SI pump suction valves a. Ensure at least one valve in from BASTs - CLOSED each flowpath closed.

~ MOV-826A and MOV-826B

~ MOV-826C and MOV-826D

b. Close RVST outlet valves to SI b. Ensure at least one valve and CNMT spray pumps (turn on DC closed.

power key switches)

~ MOV-896A

~ MOV-896B

c. Close SI pump RECIRC valves c. Ensure at least one valve closed.

~ MOV-898

~ MOV-897

d. Verify SI,pump suction valves d. Ensure at least one valve open.

from EST - OPEN

~ MOV-825A

~ MOV-825B

e. Open RHR Hx outlet valves to SI e. Ensure operating RHR pump(s) and CNMT spray pump suction aligned to SI and CS pump suction header (Refer to

~ MOV-857A Attachment RHR SYSTEM).

~ MOV-857B

~ MOV-857C

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EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 11 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: SI pump C is preferred since it delivers to both lines.

12 Check Started:

If SI Pump Should Be

a. Check the folloving: a. IF RVLIS level (no RCPS) greater than 43X [46X adverse CNMT],

o Core exit T/Cs - GREATER THAN THEN go to Step 13.

REQUIREMENTS OF FIGURE RHR INJECTION

-OR-o RCS pressure - GREATER THAN 225 psig [425 psig adverse CNMT]

b. Start one SI pump

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EOP:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 12 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check If Required:

CNMT Spray Is

a. CNMT pressure - GREATER THAN a. Perform the following:

37 PSIG

1) IF CNMT spray previously actuated, THEN consult TSC to determine if CNMT spray should be restarted.

2) Go to Step 14.

b. Start one CNMT spray pump

c. Open NaOH tank outlet valves for running pump

~ AOV-836A, pump A

~ AOV-836B, pump B

d. Open one CNMT spray pump discharge valve for running pump

~ MOV-860A or MOV-860B, pump A

~ MOV-860C or MOV-860D, pump B

e. VHEN CNMT pressure less than 32 psig, THEN close discharge valve and PULL STOP CNMT spray pump 14 Verify Adequate Core Cooling: IF both RHR pumps running, THEN ensure two SI pumps running.

o Core exit T/Cs - STABLE OR DECREASING IF only ONE RHR pump running, THEN perform the following:

o RVLIS level (no RCPs) - STABLE OR INCREASING a. Ensure at least one SI pump running.

o RVLIS level (no RCPs) - GREATER THAN 43X [46X adverse CNMT] b. VHRN CNMT spray pumps stopped, THEN start another SI pump as necessary.

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EOP: TITLE: 10 REV ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 13 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IP CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE VATER SOURCES POR AFV PUMPS VILL BE NECESSARY (REFER TO ER-AFV.l, ALTERNATE WATER SUPPLY TO APW PUMPS).

15 Check Intact S/G Levels:

a. Narrow range level - GREATER a. Maintain total feed flow greater THAN 5X [25X adverse CNMT] than 200 gpm until narrow range level greater than 5X [25X adverse CNMT] in at least one S/G.

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

[25X adverse CNMT] and 50X

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EOP: TITLE:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 14 of 18 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 OPP o Open turbine drain valves o Rotate reheater steam supply controller cam to close valves o Place reheater dump valve switches to HAND o Stop all but one condensate pump

c. Verify adequate Rx head cooling:

1) Check IA to CNMT - AVAILABLE 1) Go to Step 16d.

2) Verify at least one control 2) Manually start one fan as rod shroud fan - RUNNING power supply permits (45 kw)

3) Verify one Rx compartment 3) Perform the following:

cooling fan - RUNNING 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 COMPLETE

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EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 15 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check If Emergency Should Be Stopped:

D/Gs

a. Verify AC emergency busses a. Try to restore offsite power energized by offsite power: (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POVBR).

o Emergency D/G output breakers

- OPEN 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)

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EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 16 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check If SI Isolated:

ACCUMs Should Be

a. Both RCS hot leg temperatures- a. Continue with Step 19. %HEN LESS THAN 400'F both RCS hot leg temperatures less than 400'F, THEN do Steps 18b through d.

b. Dispatch AO to locally close breakers for SI ACCUM discharge valves

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

c. Close SI ACCUM discharge valves c. Vent any unisolated ACCUMs:

~ ACCUM A, MOV-841 1) Open vent valves for

~ ACCUM B, MOV-865 unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d; Locally reopen breakers for MOV-841 and MOV-865

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EOP:

REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 17 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF FUEL DAMAGE IS SUSPECTED, MAINTAIN S/G PRESSURE SLIGHTLY GREATER THAN RCS PRESSURE.

19 Check Be If Intact Depressurized To S/Gs Should RCS Pressure:

a. RCS pressure - LESS THAN INTACT a. Go to Step 20.

S/G PRESSURES

b. Check S/G radiation - NORMAL b. Do NOT dump steam from a S/G with high radiation. Isolate o Steamline Monitors (R-31, feed flow to a S/G with high R-32) radiation.

o Direct HP to sample S/Gs for activity

c. Dump steam to condenser from c. IF steam dump to condenser NOT intact S/G(s) until S/G pressure available, THEN dump steam using less than RCS pressure intact S/G ARVs until S/G pressure less than RCS pressure.

20 Consult TSC to Determine Rx Vessel Head Should Be If Vented NOTE: The TSC should be consulted before changing recirculation lineups.

21 At 19 HOURS After Event Consult TSC to evaluate long term Initiation, Perform Steps 22 plant status.

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EOP: REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 18 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 Place CNMT Spray Pumps In PULL STOP 23 Verify Two SI Pumps RUNNING Manually start pumps.

24 Check Core Exit T/Cs LESS Perform the following:

THAN REQUIREMENTS OF FIGURE RHR INJECTION 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.

25 Consult TSC To Evaluate Long Term Plant Status

-END-

EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 1 of 1 ES-1.3 APPENDIX LIST TITLE PAGES

1) RED PATH

SUMMARY

2) FIGURE RHR INJECTION

3) ATTACHMENT D/G STOP

4) ATTACHMENT SD-1

5) ATTACHMENT SD-2

6) ATTACHMENT RHR SYSTEM

7) FOLDOUT

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REV: 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION

=

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

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REV 10 ES-1. 3 TRANSFER TO COLD LEG RECIRCULATION PAGE 1 of 1 FIGURE RHR INJECTION CORE EXIT TEMPERATURE ('F) 600 TEMPERATURE INCREMENTS 10'F 550 500 450 400 350 300 250 CNMT PRESSURE INCREMENTS 1 PSIG 200 10 20 30 40 50 60 CONTAINMENT PRESSURE (PSIG)

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EOP:

REV 10 ES-1.3 TRANSFER TO COLD LEG RECIRCULATION PAGE 1 of 1 FOLDOUT PAGE

1. SI REINITIATION CRITERIA IF EITHER condition listed below occurs, THEN operate SI pumps manually as necessary:

o Core exit TCs GREATER THAN REQUIREMENTS OF FIGURE RHR INJECTION OR o RVLIS level LESS THAN 434 [464 adverse CNMT]

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

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