ML17250B114
| ML17250B114 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| ES-.1, ES-0.1, NUDOCS 9004200695 | |
| Download: ML17250B114 (42) | |
Text
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ES-0.1 TITLE:
REACTOR TRIP RESPONSE REV:
6 PAGE 1 of 17 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE NT SUPERI TE DENT a/ j<<
EFFECTIVE DATE
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QA NON-QA CATEGORY 1.0 REVIEWED BY:
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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE 2 of 17 A.
PURPOSE This procedure provides the necessary instructions to stabilize and control the plant following a reactor trip without a safety injection.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, when SI is neither actuated nor required.
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ES-0.1 TITLE:
REACTOR TRIP RESPONSE REV 6
PAGE 3 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF SI ACTUATION OCCURS DURING THIS PROCEDURE, E-O, REACTOR TRIP OR SAFETY INJECTION, SHOULD BE PERFORMED.
o IF A MFV PUMP IS LEFT RUNNING ON RECIRC FOR EXTENDED PERIODS OF TIME, OVERHEATING MAY OCCUR.
NOTE:
FOLDOUT page should be open and monitored periodically.
1 Check S/G Feed Flow Status:
a.
Check RCS Tavg - LESS THAN 554'F
- b. Verify MFV flow control valves-
- CLOSED,
~ MFV regulating valves
~
MFW bypass valves
- c. Verify total AFV flow - GREATER THAN 200 GPM
- d. Close MFW pump discharge valves
~ MOV-3977, A MFW pump
~ MOV-3976, B MFV pump e.
Stop MFW pumps
- a. Continue with Step 2.
WHEN temperature less than 554'F, THEN do Steps lb, c, d and e.
- b. Place A and B MFV regulating valve and bypass valve controllers in MANUAL at OX demand.
'. Manually start both MDAFV pumps.
IF total AFV flow greater than 200 gpm can NOT be established, THEN perform the following:
o Manually start TDAFW pump.
-OR-o Perform the following:
- 1) Establish MFV on bypass.
2)
Go to step 2.
- d. Manually stop MFV pumps.
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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE 4 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check RCS Tavg STABLE AT OR TRENDING TO 547'F IF 'temperature less than 547'P and decreasing, THEN perform the following:
a.
Stop dumping steam.
- b. IP MDAFW pumps supplying greater than 200 gpm, THEN ensure TDAPW pump steam supply valves in PULL STOP.
- c. IP cooldown continues, THEN control total feed flow greater than 200 gpm until narrow range level greater than 5X in at least one S/G.
WHEN S/G level greater than 5X in one S/G, THEN limit feed flow to that required to maintain S/G level.
- d. IF cooldown continues, THEN close both MSIVs.
IP temperature greater than 547'F and increasing, THEN perform the following:
o Place condenser steam dump mode control to MANUAL
-OR-o Manually dump steam using S/G ARVs.
3 Verify MRPI Indicatem ALL i'P one or more control rods NOT CONTROL AND SHUTDOWN RODS ON fully inserted, THEN borate BOTTOM 175 gallons for each control rod not fully inserted (Refer to AP-CVCS.2, IMMEDIATE BORATION).
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ES-0. 1 TITLE:
REACTOR TRIP RESPONSE REV'6 PAGE 5 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Verify All AC Busses ENERGIZED BY OFFSITE POWER
. o Normal feed breakers to all 480 volt busses
- CLOSED o
480 volt bus voltage - GREATER THAN 420 VOLTS o
Emergency D/G output breakers-OPEN Perform the following:
- a. IP any AC emergency bus normal feed breaker
- open, THEN ensure associated D/G breaker closed.
1
- b. Perform the following as necessary:
1)" Ensure one CCW pump running.
- 2) Close non-safeguards bus tie breakers:
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie
- 3) Reset Bus 13 and Bus 15 lighting breakers.
- 5) Place the following pumps in PULL STOP:
~ EH pumps
~ Turning gear oil pump
~ HP seal oil backup pump
- 6) Restore power to MCCs.
~ A from Bus 13
~ B from Bus 15
~ E from Bus 15
~
P from Bus 15
- 7) Start CNMT RECIRC fans as necessary.
- c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.1, RESTORATION OP OPPSITE POWER).
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ES-0. 1 REACTOR TRIP RESPONSE REV 6
PAGE 6 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5 Verify At Least Two SW Pumps Manually start SW pumps as RUNNING necessary.
6 Verify IA Available:
o At least 2 air compressors-RUNNING o
IA pressure
- GREATER THAN 60 PSIG Dispatch AO to locally reset and start air compressois as necessary.
IP IA pressure can NOT be maintained, THEN perform the following:
- a. Refer to AP-IA.1, LOSS OP INSTRUMENT AIR.
- b. Verify charging pump A NOT running and place in PULL STOP.
C ~
Dispatch AO to locally open manual charging pump suction from RWST (V-358 in charging pump room).
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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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE 7 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7
Check PRZR Level Control:
- a. Verify charging pumps - ANY RUNNING b.
PRZR level - GREATER THAN 13X
- a. Manually start charging pumps as necessary.
- b. Perform the following:
- 1) Place 'loop B cold leg isolation valve to REGEN Hx (AOV-427) switch to close.
- 2) Verify excess letdown isolation valve (AOV-310) closed.
- c. Verify letdown - IN SERVICE d.
PRZR level - TRENDING TO 20%
e.
Check PRZR heaters
- ENERGIZED AS NECESSARY o
PRZR heater control group o
PRZR heater backup group
- 3) Ensure PRZR heaters off.
- 4) Control charging to restore PRZR level greater than 13X.
- 5) Continue with Step 8.
VHEN PRZR level greater than 13%,
THEN do Steps 7c through e.
- c. Verify excess letdown in service.
IF NOT, THEN manually place letdown in service (Refer to Attachment LETDOWN).
- d. Control charging and letdown to maintain PRZR level at 20X.
- e. Reset PRZR heaters and energize as necessary to restore PRZR pressure.
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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE 8 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8
Check PRZR Pressure Control:
a.
PRZR pressure
- GREATER THAN 1750 PSIG b.
PRZR pressure
- GREATER THAN 2210 PSIG
- a. Perform the following:
- 1) Verify SI actuation.
IF NOT, THEN manually actuate SI.
2)
Go to E-O, REACTOR TRIP OR SAFETY INJECTION, Step 5.
- b. IF pressure less than 2210 PSIG and decreasing, THEN perform the following:
- 1) Ensure PRZR PORVs closed.
IF any valve can NOT be
- closed, THEN manually close its block valve.
~ PCV-430, MOV-516
~ PCV-431C, MOV-515
- 2) Ensure normal PRZR spray valve controller, demand at OX.
- 3) IF PRZR pressure decreasing AND PRZR level increasing, THEN stop RCPs one at a time until PRZR pressure stabilizes.
- 4) Ensure PRZR heaters energized.
This Step continued on the next page.
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ES-0. 1 REACTOR TRIP RESPONSE REV 6
PAGE 9 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 8 continued from previous page) c.
PRZR pressure
- LESS THAN 2260 PSIG
- c. IR pressure greater than 2260 psig and increasing, THEN perform the following:
- 1) Verify demand on PRZR pressure controller PCV-431 greater than 50X.
IP NOT, THEN place controller in MANUAL and increase as necessary.
- 2) Ensure PRZR heaters off.
- 3) Control pressure using normal PRZR spray.
IP normal PRZR spray NOT available and letdown is in
- service, THEN perform the following:
a)
Use auxiliary spray.
b) Verify spray line fluid to PRZR AT less than 320'P.
IP NOT, THEN stop auxiliary spray.
IP PRZR spray NOT available, THEN use one PRZR PORV, 9
Check S/G Levels:
- a. Narrow range level - GREATER THAN 5X
- b. Control feed flow to maintain narrow range level between 17X and 39X.
- a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5X in at least one S/G.
- b. IP narrow range level in any S/G continues to increase, THEN stop feed to that S/G.
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ES-0.1 TITLE:
REACTOR TRIP RESPONSE REV:
6 PAGE 10 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Check If TDAFW Pump Can Be Stopped:
- a. Both MDAFW pumps - RUNNING b.
PULL STOP TDAFW pump steam
'upply valves
~ MOV-3504A
~ MOV-3505A a.
Go to Step 11.
11 Establish Condenser Steam Dump Pressure Control:
- a. Verify condenser available:
o Any MSIV -
OPEN o
Annunciator G-15, STEAM DUMP
- LIT
- b. Adjust condenser steam dump controller HC-484 to 1005 psig in AUTO
- c. Place steam dump mode selector switch to MANUAL a.
Perform the following:
- 1) Place S/G ARV controller in AUTO at 1005 psig and verify proper operation.
IF S/G ARV NOT controlling in AUTO, THEN control S/G ARV manually.
2)
Go to Step lid.
- d. Return to Step 2.
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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE ll of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check RCP Status AT LEAST ONE RUNNING Perform the following:
- a. Establish conditions for starting an RCP:
o Verify bus 11A or, llB energized.
o Refer to Attachment RCP START.
- b. Start one RCP.
IR an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).
IR natural circulation NOT
- verified, THEN increase dumping steam.
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ES-0.1 TITLE:
REACTOR TRIP RESPONSE REV:
6 PAGE 12 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Loss of forced air cooling may result in failure of NIS detectors.
13 Check If Source Range Detectors Should Be Energized:
a.
Source range channels-DEENERGIZED a.
Go to Step 13e.
b.
Check intermediate range flux-EITHER CHANNEL LESS THAN 1O-xo AMPS
- b. Perform the following:
- 1) IF neither intermediate range channel is decreasing THEN initiate boration.
- c. Check the following:
o Both intermediate range channels
- LESS THAN 10 xo AMPS
- 2) Continue with Step 14.
VHRN flux is less than 10-'mps on any operable
- channel, THEN do Steps
- 13c, d and e.
- c. Continue with Step 14.
When either condition met, THEN do Steps 13d and e.
-OR-o Greater than 20 minutes since reactor trip
- d. Verify source range detectors-ENERGIZED
- d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2
of 2).
- e. Transfer Rk-45 recorder to one source range and one intermediate range channel IR source ranges can NOT be
- restored, THEN refer to ER-NIS.l, SR MALFUNCTION, and go to Step 14.
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ES-0.1 REACTOR TRIP RESPONSE REV 6
PAGE 13 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 Establish Normal Shutdown*
Alignment:
a.
Check condenser
- AVAILABLE
- a. Dispatch AO to perform Attachment SD-2.
- b. Perform the following:
o Open generator disconnects
~ 1G13A71
~ 9X13A73 o
Place voltage regulator to OFF o
Open turbine drain valves o
Rotate reheater steam supply controller cam to close valves o
Place reheater dump valve switches to HAND o
Stop all but one condensate pump
- c. Verify adequate Rx head cooling:
- 2) Verify at least one control rod shroud fan - RUNNING
- 3) Verify one Rx compartment cooling fan - RUNNING
- d. Dispatch AO to perform Attachment SD-1 1)
Go to Step 15.
- 2) Manually start one fan as power supply permits (45 kw).
- 3) Manually start one fan as power supply permits (23 kw).
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ES-0.1 TITLE:
REACTOR TRIP RESPONSE REV 6
PAGE 14 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Maintain Stable Plant Conditions:
a.
PRZR pressure
- BETWEEN 1800 PSIG AND 2260 PSIG b.
PRZR level - BETWEEN 20% AND 30X c.
S/G narrow range levels-BETWEEN 17X AND 39X d.
RCS Tavg - GREATER THAN 540'F
- a. Control PRZR heaters and spray as necessary.
- b. Control charging as necessary.
- c. Control S/G feed flow as necessary.
- d. Control dumping steam as necessary.
IF cooldown'ontinues, THEN close both MSIVs.
16 Transfer AFW Flow Control To Bypass Valves:
- a. Verify S/G levels - GREATER THAN 17X
Open AFW discharge crossover valves
~ MOV-4000A
~ MOV-4000B
- a. Continue with Step 17 WHEN S/G level greater than
- 17X, THEN do Steps 16b through e.
- d. Close MDAFW pump discharge valves
~ MOV-4007
~ MOV-4008 e.
Open AFW bypass valves as necessary
~ AOV-4480
~ AOV-4481
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ES-0.1 REACTOR TRIP RESPONSE REV:
6 PAGE 15 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check VCT Makeup System:
- a. Verify the following:
- 1) Adjust boric acid flow control valve to 4.5. gpm 2)
RMW mode selector switch in AUTO 3)
RMW control armed
- RED LIGHT LIT
- b. Check VCT level o
Level - GREATER THAN 20X
-OR-o Level -
STABLE OR INCREASING
- b. Manually increase VCT makeup flow as follows:
- 1) Ensure BA transfer pumps and RMW pumps running.
- 2) Place RMW flow control valve HCV-ill in MANUAL and increase RMW flow.
- 3) Increase boric acid flow as necessary.
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ES-0.1 REACTOR TRIP RESPONSE REV' PAGE 16 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Check Charging Pump Suction Aligned To VCT:
a.
VCT level - GREATER THAN 20X
- a. IF VCT level can NOT be maintained greater than 5X, THEN perform the following:
- 1) Ensure charging pump suction aligned to RWST o
LCV-112B open o
LCV-112C closed
- b. Verify charging pumps aligned to VCT o
LCV-112C -
OPEN o
LCV-112B - CLOSED
- 2) Continue with Step 19.
WHEN VCT level greater than 40X, THEN do Step 18b.
- b. Manually align valves as necessary.
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ES-0.1 REACTOR TRIP RESPONSE REV' PAGE 17 of 17 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Determine If Cooldown Is Required:
- a. Consult Plant staff to determine if RCS cooldown is necessary
- b. At least one RCP - RUNNING c.
Go to 0-2.2, PLANT SHUTDOWN FROM HOT SHUTDOWN TO COLD SHUTDOWN
- a. IF cooldown NOT required, THEN go to 0-3>
HOT SHUTDOWN WITH XENON PRESENT.
- b. Perform the following:
- 1) Ensure 2 control rod shroud fans running.
2)
Go to ES-0.2, NATURAL CIRCULATION COOLDOWN, Step 1.
-END-
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ES-0.1 REACTOR TRIP RESPONSE REV:
6 PAGE 1 of 1 ES-O. 1 APPENDIX LIST TITLE PAGES 1)
RED PATH
SUMMARY
2)
FIGURE MIN SUBCOOLING 3)
ATTACHMENT LETDOWN 4)
ATTACHMENT RCP START 5)
ATTACHMENT NC 6)
ATTACHMENT SD-1 7)
ATTACHMENT SD-2 8)
FOLDOUT
EP:
ES-0.1 REACTOR TRIP RESPONSE REV:
6 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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ES-0.1 REACTOR TRIP RESPONSE REV 6
,PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 f
2400 2300 2200 l'100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADVERSE CNMT NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
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ES-0.1 REACTOR TRIP RESPONSE REV' PAGE 1 of 1 FOLDOUT PAGE SI ACTUATION CRITERIA IF ANY condition listed below occurs, THEN actuate SI and go to E-O, REACTOR TRIP OR SAFETY INJECTION, Step 1:
o RCS subcooling based on core exit T/Cs LESS THAN O'F USING FIGURE MIN SUBCOOLING OR o
PRZR level LESS THAN 54 [304 adverse CNMT]
AND RCS subcooling based on core exit T/Cs LESS THAN 20'F USING FIGURE MIN SUBCOOLING OR o
Any automatic SI setpoint is reached 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.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
4