ML17262A541
| ML17262A541 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/10/1991 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262A536 | List: |
| References | |
| ES-1.3, NUDOCS 9107110295 | |
| Download: ML17262A541 (42) | |
Text
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV 1
PAGE 1 of 18 ROCHESTER GAS AND ELECTRIC CORPO ION GINNA STATION CONTROLLED COPY NUMBER TECHNICA REVIEW PORC REVIEW A E T SUPERIN ND NT EF ECTI E DATE C
EGORY.1.0 REVIEWED BY:
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV: '12 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-1, LOSS OF REACTOR OR SECONDARY COOLANT, on low RWST level.
b ~
ECA 2 1 ~
UNCONTROLLED DEPRESSUR IZATION OF ALL STEAM GENERATORS, on low RWST level.
c.
Other procedures whenever RWST level reaches the switchover setpoint (284).
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 3 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
INJECTION FLOW TO THE RCS MUST BE MAINTAINEDAT ALL TIMES.
o IF OPPSITE 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 HEALTH PHYSICS BEFORE DISPATCHING PERSONNEL TO AUXILIARY BUILDING.
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 IP RWST level is less than 28X AND CNMT sump B level is less than 113 inches,'HEN go to ECA-1.2, LOCA OUTSIDE CONTAINMENT, Step 1.
NOTE:
Steps 2 through 8 should be performed without delay.
FR procedures should not be implemented prior to completion of these steps.
2 Reset SI
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 4 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Establish Conditions For RHR Suction Swapover:
- 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
- c. Dispatch AO to perform the following:
- a. Start additional SW pumps as power supply permits (258 kw each)
IP D/Gs supplying emergency AC
- busses, THEN shed non-essential loads as necessary
~ Rx compartment cooling fans
~ Control rod shroud fans
~ PRZR heaters
~ Charging pumps
- 2) Perform the following:
a) Isolate SW to screenhouse and air conditioning headers.
~ MOV-4609 and MOV-4780
~ MOV-4663 and MOV-4733 b) Direct AO to locally adjust total SW flow to the CCW Hxs to between 5000 gpm and 6000 gpm.
c) Direct AO to locally isolate SW return from SFP Hxs:
~
SPP Hx A (V-4622)
~ SFP Hx B (V-8634 and V-8685) d) Verify SW portions of Attachment SD-1 are complete.
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 5 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Establish CCW flow to RHR Hxs:
a.
Check both CCW pumps - RUNNING
~ MOV-738A
~ MOV-738B
- a. Start CCW pumps as power supply permits
(-124 kw each).
- b. Dispatch AO to locally open valves.
CAUTION o
RHR FLOW INDICATED ON FI-626 SHOULD BE LIMITED TO 1500 GPM PER OPERATING
,PUMP TO ENSURE OPTIMUM PUMP PERFORMANCE.
o CONSULT WITH HEALTH PHYSICS BEFORE DISPATCHING PERSONNEL TO AUXILIARY BUILDING.
5 Check RHR Flow (FI-626)
LESS THAN.3000 GPM Manually ad)ust RHR Hx outlet valves equally to reduce flow to less than 3000 gpm.
~ HCV-624 B RHR Hx
~ HCV-625 A RHR Hx IF flow can NOT be reduced
~ V-715 B RHR Hx
~ V-717 A RHR Hx
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 6 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 'k * * * * * *
- CAUTION o
ANY PUMPS TAKING SUCTION PROM RWST SHOULD BE STOPPED UPON REACHING RWST LO-LO LEVEL ALARM.
o SI PUMPS SHOULD BE STOPPED IP RCS PRESSURE IS GREATER THAN THEIR SHUTOFF HEAD PRESSURE.
6 Check IF Unnecessary Pumps Can Be Stopped:
- a. Three SI pumps - RUNNING
- b. Stop SI pump C and place both svitches in PULL STOP
- c. Both CNMT spray pumps
- RUNNING
- d. Pull stop one CNMT spray pump e.
Stop both RHR pumps and place in PULL STOP a.
Go to Step 6c.
- c. Pull stop any idle CNMT spray pump and go to Step 6e.
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV 12 PAGE 7 of 18 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 o
(inside CNMT)
~ MOV-851A
~ MOV-851B
- c. Ensure at least one valve in each set open.
~ MOV-1813A
~ MOV-1813B
- d. Manually close valves.
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 8 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8 Initiate RHR Sump Recirculation:
Open both RHR suction valves from sump B (outside CNMT) o MOV-850A -
OPEN o
MOV-850B -
OPEN
- c. Start both RHR pumps
- a. Dispatch AO to locally close valve and continue with Step 8b.
- 1) Initiate only one train of RHR recirculation (Refer to Attachment RHR NPSH for further guidance).
2)
Go to Step 9.
- c. IR no RHR pump cd be started, THEN go to ECA-1.1, LOSS OR EMERGENCY COOLANT RECIRCULATION, Step 1.
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 15X.
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 9 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Stop All Pumps Supplied From 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
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 10 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 11 Align SI And CNMT Spray For Sump Reci'rculation:
- a. Verify SI pump suction valves from BASTs - CLOSED
~ MOV-826A and MOV-826B
+ MOV-826C and MOV-826D
~ MOV-896A
~ MOV-896B
- c. Close SI pump RECIRC valves
~ MOV-898
~ MOV-897
OPEN
~ MOV-825A
~ MOV-825B e.
Check both RHR pumps - RUNNING
~ MOV-857A
~ MOV-857B
~ MOV-857C a.
Ensure at least one valve in each flowpath closed.
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- b. Ensure at least one valve closed.
- c. Ensure at least one valve closed.
d; Ensure at least one valve open.
- e. IF only A RHR pump running, THEN perform the following:
- 1) Open all RHR Hx outlet valves
pump suction header.
~ MOV-857A
~ MOV-857B
~ MOV-857C 2)
Go to Step 12.
IF only B RHR pump running, THEN perform the following:
2)
Go to Step 12.
- f. Ensure at least one RHR pump(s) aligned to SI and CS pump suction header (Refer to Attachment RHR SYSTEM).
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 11 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
SI pump C is preferred since it delivers to both lines.
12 Verify Adequate RHR Injection:
o Core exit T/Cs - LESS THAN REQUIREMENTS OP FIGURE RHR INJECTION Start one SI pump.
o RCS pressure
- LESS THAN 225 psig [425 psig adverse CNMT]
o Check RVLIS level (no RCPS)-
GREATER THAN 43%
[46% adverse CNMT]
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 12 of 18 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 Check If CNMT Spray Zs Required:
a.
CNMT pressure
- GREATER THAN 37 PSIG
- b. Verify open CNMT spray pump discharge valves
~ MOV-860A
~ MOV-860B
~ MOV-860C
~ MOV-860D
- a. Perform the following:
- 1) IF CNMT spray previously
2)
Go to Step 14.
- b. Manually open valve(s) for selected pump.
~ MOV-860A or MOV-860B, A pump
~ MOV-860C or MOV-860D, B pump
- c. Start selected CNMT spray pump d.
Open NaOH tank outlet valves for running pump 4
~ AOV-836A, pump A
~ AOV-836B, pump B
e.
VHEN CNMT pressure less than 32 psig, THEN PULL STOP CNMT spray pump
- f. Close CNMT spray pump discharge valve
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ES-1.3 TRANSFER.TO COLD LEG RECIRCULATION REV 12 PAGE 13 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINBD 14 Verify Adequate Core Cooling:
o Core exit T/Cs - STABLE OR DECREASING o
RVLIS level (no RCPs) - STABLE OR INCREASING o
- GREATER THAN 43X [46X 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 at least one SI pump running.
b.
WHEN CNMT spray pumps stopped, THEN start another SI pump as necessary.
CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO BR-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).
NOTE:
TDAFW pump flow control valves fail open on loss of IA.
15 Check Intact S/G Levels:
- a. Narrow range level - GREATER THAN 5%
[25% adverse CNMT]
- a. Maintain total feed flow greater 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 17%
[25X adverse CNMT] and 50%
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 14 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 16 Establish Normal Shutdown Alignment:
a.
Check condenser
- AVAILABLE
- a. Dispat'ch 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 puinp
- c. Verify adequate Rx head cooling:
- 2) Verify at least one control rod shroud fan - RUNNING 4
- 3) Verify one Rx compartment cooling fan - RUNNING d.'erify Attachment SD COMPLETE 1)
Go to Step 16d.
- 2) Manually start one fan as power supply permits (45 kw)
- 3) 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)
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV 12 PAGE 15 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check If 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
- b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP)
- a. Try to restore offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).
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ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 16 of 18 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Check If SI ACCUMs Should Be Isolated:
- a. Both RCS hot leg temperatures-
'ESS 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.
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 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 If Intact S/Gs Should Be Depressurized To RCS Pressure:
a.
RCS pressure
- LESS THAN INTACT S/G PRESSURES
- b. Check S/G radiation - NORMAL o
Steamline Monitors (R-31, R-32) o Direct HP to sample S/Gs for activity c.
Dump steam to condenser from intact S/G(s) until S/G pressure less than RCS pressure a.
Go to Step 20.
b.
Do NOT dump steam from a S/G with high radiation.
Isolate feed flow to a S/G with high radiation.
- c. IF steam dump to'ondenser NOT available, THEN dump steam using intact S/G ARVs until S/G pressure less than RCS pressure.
20 Consult TSC to Determine If Rx Vessel Head Should Be Vented 4
NOTE:
The TSC should be consulted before changing recirculation lineups.
21 Check Event Duration GREATER THAN 19 HOURS AFTER EVENT INITIATION Consult TSC to evaluate long term plant status.
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 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 THAN REQUIREMENTS OF FIGURE RHR INJECTION Perform the'olloving:
- 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-
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ES-1. 3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV 12 PAGE 1 of 1 ES-1.3 APPENDIX LIST TITLE 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 8)
ATTACHMENT AUX BLDG SW I
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FOLDOUT PAGES
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ES-1.3 T!TLE:
TRANSFER TO COLD LEG RECIRCULATION REV 12 PAGE 1 of 1 RED PATH'UMMARY 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]
I c.
HEAT SINK Narrow range level in all S/Gs less than 5O (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
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ES-1.3 TITLE:
TRANSFER TO COLD LEG RECIRCULATION REV:
12 PAGE 1 of 1 CORE BZIT TEMPERATURE ('P) 600 TEMPERATURE INCREMENTS 10'P 550 FIGURE RHR INJECTION 500 450 400 INITIATE HIGH HEAD INJECTION 350 300 250 200 10 RHR INJECTION ADEQUATE 20 30 40 CONTAINMENT PRESSURE (PSIG)
CNMT PRESSURE INCREMENTS 1 PSIG 50 60
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