ML17263A273
| ML17263A273 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/21/1993 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A269 | List: |
| References | |
| FR-H.4, NUDOCS 9305140053 | |
| Download: ML17263A273 (84) | |
Text
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REV: 2 RESPONSE TO LOSS OF NORMAL STEAM RELEASE FR-H.4 CAPABILITIES PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
9305140053 930422 PDR 'DOCN, 05000244 PDR F ..
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REV: 2 RESPONSE TO LOSS OF NORMAL STEAM RELEASE FR-H.4 CAPABILITIES PAGE 2 of 5 A. PURPOSE This procedure provides actions to respond to a failure of the S/G ARVs and Condenser Dump Valves.
B. ENTRY CONDITIONS/SYMPTOMS
- 1. ENTRY CONDITIONS This procedure is entered from F-0.3, HEAT SINK Critical Safety Function Status Tree on a YELLOW condition.
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REV: 2 RESPONSE TO LOSS OF NORMAL STEAM RELEASE FR-H.4 CAPABILITIES PAGE 3 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF AFFECTED S/G(S) NARROW RANGE LEVEL INCREASES TO GREATER THAN 90% [85%
ADVERSE CNMT], THEN STEAM SHOULD NOT BE RELEASED FROM THE AFFECTED S/G(S).
NOTE: o Throughout this procedure, "affected" refers to any S/G in which pressure is greater than 108S psig.
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 Try To Restore Normal Steam Release Capability Of Affected S/G(s):
- a. Check if condenser available a. Perform the following o Affected S/G MSIV(s) - OPEN 1) Place affected S/G(s) ARV controller to manual and o Either CW pump - RUNNING attempt to open ARV.
o Condenser vacuum - GREATER IF S/G ARV(s) can NOT be THAN 20 INCHES HG opened, THEN dispatch AO to check nitrogen supply to ARVs.
- 2) Go to Step 2.
- b. Operate condenser steam dump manually:
- 1) Place steam dump mode selector to MANUAL
- 2) Place condenser steam dump controller to MANUAL
- 3) Open steam dump valves as required
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REV: 2 RESPONSE TO LOSS OF NORMAL STEAM RELEASE FR-H.4 CAPABILITIES PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 Check RCP Status:
- a. RCPs - BOTH RUNNING a. Go to Step 3.
- b. Stop RCP in affected loop 3 Check S/G Pressures LESS Perform the following:
THAN 1085 PSIG
- a. Manually open affected S/G(s)
TDAFW pump steam supply valves
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A
- b. Dispatch AO to perform the following:
- 1) Open affected S/G MSIV bypass valve.
- 2) Open priming air e)ector steam isolation valves' V-3580
~ V-3581
- c. Local operation of affected S/G ARV may be attempted.
(Establish communications with control room.)
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REV: 2 RESPONSE TO LOSS OF NORMAL STEAM RELEASE FR-H.4 CAPABILITIES PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Return To Procedure And Step In Effect
-END-
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REV 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 1 of 12 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
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REV 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 2 of 12 A. PURPOSE This procedure provides actions to respond to a high PRZR level.
B. ENTRY CONDITIONS/SYMPTOMS
- l. ENTRY CONDITIONS This procedure is entered from:
- a. F-0.6, INVENTORY Critical Safety Function Status Tree on a YELLOW condition.
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TITLE:
REV' FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 3 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+ R/hr.
1 Check RCS Hot Leg Temperature Dump steam from intact S/G(s) to STABLE OR DECREASING stabilize RCS temperature.
2 Verify Adequate SW Flow:
- a. At least three SW pumps - RUNNING a. Manually start pumps as power supply permits (258 kw each).
IF less than two SW pumps can be operated, THEN perform the following:
- 1) Ensure SW isolation
- 2) Go to Step 7.
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
valves - AT LEAST ONE SET OPEN (Refer to Attachment AUX BLDG SW.)
~ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- d. Verify CNMT RECIRC fans d. Dispatch AO to locally throttle annunciator C-2, HIGH flow to CCW Hx to between TEMPERATURE ALARM - EXTINGUISHED 5000 gpm and 6000 gpm total flow.
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REV: 5 FR-X.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 4 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Establish IA to CNMT:
- a. Verify non-safeguards busses a. Perform the following:
energized from offsite power
- 1) Close non-safeguards bus tie o Bus 13 normal feed - CLOSED breakers:
-OR- ~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie o Bus 15 normal feed - CLOSED
- 2) WHEN bus 15 restored, THEN reset control room lighting.
- b. Verify SW isolation valves to b. Manually align turbine buildl'ng - OPEN valves'.
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664 Verify at least two air c. Manually start air compressors compressors - RUNNING as power supply permits (75 kw each). IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.
- d. Check IA supply: d. Perform the following:
o Pressure - GREATER THAN 1),Continue attempts to restore 60 PSIG IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
o Pressure - STABLE OR INCREASING 2) Continue with Step 7. WHEN IA restored, THEN do Steps 3e and f.
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REV' FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 5 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- x*x**xx**xxx*xP*xxx*xxx************ CAUTION CHARGING AND LETDOWN FLOW SHOULD BE CAREFULLY CONTROLLED TO AVOID SUDDEN RCS PRESSURE CHANGES SINCE THE PRZR MAY BE WATER SOLID.
x******x k x x x x x x x*x x x******x x x x***********
4 Check If Normal Operation CVCS Can Be Established
- a. Verify IA restored: a. Continue with Step 7. WHEN IA restored, THEN do Steps 4 o IA to CNMT (AOV-5392) - OPEN through 6.
o IA pressure - GREATER THAN 60 PSIG
- b. CCW pumps - ANY RUNNING b. Perform the following:
- 1) IF any RCP ¹1 seal outlet temperature offscale high, THEN isolate CCW to thermal barrier of affected RCP(s).
~ RCP A, MOV-749A and MOV-759A
~ RCP B, MOV-749B and MOV-759B
- 2) Manually start one CCW pump.
- c. Verify instrument bus D c. Energize MCC B. IF MCC B NOT ENERGIZED available, THEN perform the following:
- 1) Verify MCC A energized.
- 2) Place instrument bus D on maintenance supply.
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REV 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 6 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check Should IfBe Seal Return Flow Established:
- a. Verify RCP ¹1 seal outlet a. Go to Step 7.
temperature - LESS THAN 235'F
- b. Verify RCP seal outlet valves b. Manually open valves as OPEN necessary.
=
~ AOV-270A
~ AOV-270B
- c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313
- d. Open RCP seal return isolation d. Perform the following:
valve MOV-313
- 1) Place MOV-313 switch to OPEN.
- e. Verify RCP ¹1 seal leakoff flow e. IF any RCP seal leakoff flow LESS THAN 5.5 GPM greater than 5.5 gpm THEN:
o Close the affected RCP seal discharge 'valve
~ RCP A, AOV-270A
~ RCP B, AOV-270B o Trip the affected RCP IF both RCP seal discharge valves are shut, THEN go to Step 7.
- f. Verify RCP ¹1 seal leakoff flow f. Refer to AP-RCP.1, RCP SEAL THAN 0.25 GPM 'REATER MALFUNCTION.
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REV 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 7 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Check Normal Letdown IN Establish excess letdown as follows:
SERVICE o Place AOV-312 to NORMAL o Ensure CCW from excess letdown, (AOV-745).
o Open excess letdown isolation valve AOV-310.
o Slowly open HCV-123 to maintain excess letdown .temperature less than 195'F and pressure less than 100 psig.
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REV: 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 8 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check Been If Charging Established:
Flow Has
- 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 locally close seal injection needle valve(s) to affected RCP:
~ RCP A, V-300A
~ RCP B, V-300B
- 2) Ensure HCV-142 open, demand at 0%.
- b. Charging pump suction aligned to b. Manually align valves as RWST: necessary.
o LCV-112B - OPEN IF LCV-112B can NOT be opened, THEN perform the following:
o LCV-112C - CLOSED
- 1) Verify charging pump A NOT running and'lace in PULL STOP.
- 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).
- c. Start charging pumps as necessary and adjust charging flow to restore PRZR level
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REV 5 FR-I.l RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 9 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Check Normal Letdown IN Establish Normal Letdown:
SERVICE
- a. Establish charging flow to REGEN Hx greater than 20 gpm.
- b. Place the following switches to CLOSE:
~ Letdown orifice valves (AOV-200A, AOV-200B, and AOV-202)
~ AOV-427, loop B cold leg to REGEN Hx
~ AOV-371, letdown isolation valves
- c. Place letdown controllers TCV-130 and PCV-135 in MANUAL at 40% open
~ TCV-130
~ PCV-135
- d. Reset both trains of XY relays for AOV-371 and AOV-427
- e. Open AOV-371 and AOV-427
- f. Open letdown orifice valves as necessary
- g. Place TCV-130 in AUTO at 105'F
- h. Place PCV-135 in AUTO at 250 psig
- i. Adjust charging pump speed and HCV-142 as necessary j . WHEN THEN normal letdown in service, secure excess letdown.
o Close excess letdown flow control valve, HCV-123.
o Close excess letdown isolation valve, AOV-310.
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REV: 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 10 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Check PRZR Pressure:
- a. Pressure - LESS THAN 2335 PSIG a. Verify at least one PRZR PORV and block valve open. IF NOT, THEN open one PORV and block valve as necessary until pressure less than 2335 psig.
IF IA NOT available, THEN refer to Attachment N2 PORVS to operate PORVs.
- b. Pressure - LESS THAN 2260 PSIG b. Control charging and letdown flow as necessary to decrease PRZR pressure to less than 2260 psig.
10 Verify PRZR PORVs CLOSED Manually close PORVs. IF any valve can NOT be closed, THEN manually close its block valve.
ll Restore Conditions:
PRZR To Saturation
- a. Verify letdown - IN SERVICE a. Do NOT energize PRZR heaters.
Continue with Step 13. WHEN letdown established, THEN energize PRZR heaters.
- b. Energize PRZR heaters
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REV' FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 11 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Check PRZR Spray Valves:
- a. Auxiliary spray valve (AOV-296) a. Manually close auxiliary spray CLOSED valve. IF valve can NOT be closed, THEN perform the following:
- 1) Establish excess letdown (Refer to Step 6).
- 2) Close loop B cold leg to REGEN Hx (AOV-427).
- 3) Ensure HCV-142 demand at 0%.
- b. Verify normal PRZR spray valve b. Place controllers in manual at controllers - DEMAND AT 0% 0% demand.
NOTE: PRZR temperature at which bubble should form may be determined from steam table.
13 Control Charging And Letdown Flow As Necessary To Maintain RCS Pressure Stable 14 Check PRZR level LESS THAN Perform the following:
87~a
- b. Return to Step 13.
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REV 5 FR-I F 1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 12 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Return To Procedure And Step In Effect
-END-
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REV: 5 FR-I.1 RESPONSE TO HIGH PRESSURIZER LEVEL PAGE 1 of 1 FR-I.1 APPENDIX LIST TITLE PAGES
- 1) ATTACHMENT N2 PORVS
- 2) ATTACHMENT SD-1
- 3) ATTACHMENT AUX BLDG SW
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV: 10 FR-P. 1 SHOCK CONDITION PAGE 1 of 21 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 4' PLA SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV 10 FR-P. 1 SHOCK CONDITION PAGE 2 of 21 A. PURPOSE This procedure provides actions to avoid, or limit, thermal shock or pressurized thermal shock to the reactor pressure vessel, or overpressure conditions at low temperature.
B. ENTRY CONDITIONS/SYMPTOMS
- 1. ENTRY CONDITIONS This procedure is entered from:
- a. F-0.4, INTEGRITY Critical Safety Function Status Tree, on either a RED or ORANGE condition.
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REV: 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION
~ PAGE 3 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+" R/hr.
1 Check RCS Pressure GREATER IF RHR flow greater than 475 gpm, THAN 250 PSIG t'465 PSIG THEN return to procedure and step adverse CNMT] in effect.
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV 10 FR-P. 1 SHOCK CONDITION.
PAGE 4 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: A faulted S/G is any S/G that is depressurizing in an uncontrolled manner or is completely depressurized.
2 Check RCS Cold Leg Try to stop RCS cooldown:
Temperatures STABLE OR INCREASING a. Ensure S/G ARVs closed.
,b. Close both S/G MSIVs.
- c. Ensure MFW flow control valves closed.
~ MFW regulating valves
~ MFW bypass valves
- d. Ensure MFW pumps tripped.
- e. Rotate reheater steam supply controller cam to close reheater steam supply valves.
- f. IF S/G pressure less than condensate pressure, THEN stop all condensate pumps.
- h. Control total feed flow to non-faulted S/G(s) greater than 200 gpm until narrow range level greater than 5% [25% adverse CNMT] in at least one non-faulted S/G. WHEN S/G level greater than 5% [25% adverse CNMT] in one non-faulted S/G, THEN limit feed flow to stop RCS cooldown.
This Step continued on the next page.
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV: 10 FR-P.1 SHOCK CONDITION PAGE 5 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED (Step 2 continued from previous page)
- i. Minimize cooldown from faulted S/G(s):
- 1) Close faulted S/G(s) TDAFW pump steam supply valve(s).
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A
- 2) IF both S/G(s) faulted, THEN control feed flow at 50 gpm to each S/G.
- 3) IF any S/G NOT faulted, THEN isolate all feedwater to faulted S/G unless necessary for RCS temperature control.
IF a faulted S/G is necessary for RCS temperature control, THEN control feed flow at 50 gpm to that S/G.
3 Check PRZR PORV Block Valves:
- a. Power to PORV block valves a. Restore power to block valves AVAILABLE unless block valve was closed to isolate an open PORV:
~ MOV-515, MCC C position 6C
~ MOV-516, MCC D position 6C
- b. Block valves - AT LEAST ONE OPEN b. Open one block valve unless was closed to isolate an open it PORV.
IF at least one block valve can NOT be opened, THEN dispatch AO to locally check breaker.
~ MOV-515, MCC C position 6C
~ MOV-516, MCC D position 6C
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REV 10 RESPONSE TO IMMINENT PRESSURIZED THERMAL FR-P.1 SHOCK CONDITION PAGE 6 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- x*****> *x *x x s x w w x x x x w CAUTION 0 w **0 w x x ***********
IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR PRESSURE, THEN STEP 4 SHOULD BE PERFORMED AFTER PRESSURE DECREASES TO LESS THAN THE APPLICABLE PORV SETPOINT.
- x******x*xxxxxxxxxxxxx'xxx*x**x******
4 Check PRZR PORV Status:
- a. Check Reactor Vessel a. Go to Step 4d.
Overpressure Protection System-IN SERVICE
- b. Check RCS pressure - LESS THAN b. Perform the following:
410 PSIG
- 1) Ensure at least one PRZR PORV open.
- 2) Continue with Step 5. WHEN pressure less than setpoint, THEN do Step 4e.
- c. Go to Step 4e
- d. PRZR pressure - LESS THAN d. Perform the following:
2335 PSIG
- 1) Ensure at "least one PRZR PORV open.
- 2) Continue with Step 5. WHEN pressure less than setpoint, THEN do Step 4e.
- e. Verify PRZR PORVs - CLOSED e. Manually close valve.
IF any valve can NOT be closed, THEN manually close its block valve.
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REV: 10 FR-PE 1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 7 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check SI Pumps ANY RUNNING Go to Step 13.
6 Check If SI Can Be Terminated: Do NOT stop SI pumps. Perform the following.'.
o RCS subcooling based on core exit T/Cs - GREATER THAN 50'F IF RCS subcooling based on core USING FIGURE MIN SUBCOOLING exit T/Cs greater than O'F using Figure MIN SUBCOOLING and no RCP o Check RVLIS indication: running, THEN attempt to start an RCP:
o Level (no RCPs) - GREATER THAN 68% [73% adverse CNMTj 1) Establish conditions for starting an RCP:
-OR-o Bus 11A or 11B energized o Fluid fraction (any RCP running) - GREATER THAN 80% o Refer to Attachment RCP START
- 2) IF conditions established, THEN start one RCP.
- b. Go to Step 26.
- 4 *****x x ********* CAUTION 4 ***************
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.
x x P P 7 Reset SI
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV: 10 FR-P. 1 SHOCK CONDITION PAGE 8 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Stop SI And RHR Pumps And Place In AUTO 9 Reset CI:
- a. Depress CI reset pushbutton
- b. Verify annunciator A-26, CNMT b. Perform the following:
ISOLATION - EXTINGUISHED
- 1) Reset SI.
- 2) Depress CI reset pushbutton.
10 Verify Adequate SW Flow:
- a. Check at least two SW pumps a. Manually start SW pumps as power RUNNING 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-l).
- 3) Go to Step 12. WHEN adequate SW available, THEN do Step 11.
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
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REV: 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 9 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Establish IA to CNMT:
- a. Verify non-safeguards busses a. Perform the following:
energized from offsite power
- 1) Close non-safeguards bus tie o Bus 13 normal feed - CLOSED breakers:'
-OR- Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie o Bus 15 normal feed - CLOSED
- 2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).
IF NOT, THEN evaluate RECIRC fans should be if CNMT stopped (Refer to Attachment CNMT RECIRC FANS).
- 3) WHEN bus 15 restored, THEN reset control room lighting.
b; Verify SW isolation valves to b. Manually align valves.
turbine building - OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- c. Verify at least two air compressors - RUNNING 'seach).power IFsupply
- c. Manually start air compressors permits air compressors (75 kw can NOT be started, THEN dispatch AO to locally reset compressors as necessary.
- d. Check IA supply: d. Perform the following:
o Pressure - GREATER THAN 1) Continu'e attempts to restore 60 PSIG IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
o Pressure - STABLE OR INCREASING 2) Continue with Step 12. WHEN IA restored, THEN do Steps lie and f.
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV 10 FR-P.1 SHOCK CONDITION PAGE 10 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Check Been If Charging Established:
Flow Has
- 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 locally close seal injection needle valve(s) to affected RCP:
~ RCP A, V-300A
~ RCP B, V-300B
- 2) Ensure HCV-142 open, demand at 0%.
- b. Align charging pump suction to b. IF LCV-112B can NOT be opened, RWST: THEN perform the following:
o LCV-112B - OPEN 1) Verify charging pump A NOT running and place in PULL o LCV-112C - CLOSED STOP.
- 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).
- c. Start charging pumps as necessary and adjust charging flow to restore PRZR level
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REV: 10 FR-P. RESPONSE TO IMMINENT PRESSURIZED THERMAL 1
SHOCK CONDITION PAGE 11 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- 13 Monitor SI Reinitiation Manually operate SI pumps as Criteria: necessary and perform the following:
subcooling based on core a. IF o RCS exit MIN T/Cs - GREATER THAN FIGURE SUBCOOLING
'xit T/Cssubcooling RCS MIN SVBCOOLING and based on core greater than Figure no RCP running, THEN attempt to start a o RVLIS indication: RCP:
o Level - GREATER THAN 68% (73% 1) Establish conditions for adverse CNMTj starting an RCP:
-OR- o Bus llA or 11B energized o Fluid fraction (any RCP o Refer to Attachment RCP running) - GREATER THAN 80% START
- 2) IF conditions established, THEN start one RCP.
- b. Go to Step 26.
14 Check RCS Hot Leg IF increasing, THEN control feed Temperatures STABLE flow and dump steam to stabilize RCS hot leg temperatures.
IF decreasing, THEN verify that actions of Step 2 have been performed before continuing'ith procedure.
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RESPONSE TO IMMINENT PRESSURIZED THERMAL REV'0 FR-P.1 SHOCK CONDITION PAGE 12 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check If SI Isolated:
ACCUMs Should Be
- a. Check the following: a. Return to Step 13.
o RCS subcooling based on core exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING o RVLIS indication:
o Level - GREATER THAN 68%
[73% adverse CNMT]
-OR-o Fluid fraction (any RCP running) - GREATER THAN 80%
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves c. Vent any unisolated ACCUMs:
~ MOV-841 1) Open vent valves for
~ MOV-865 unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
- 3) Continue with Step 16. Do NOT decrease RCS pressure to less than unisolated ACCUM pressure.
- d. Locally reopen breakers for MOV-841 and MOV-865
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REV: 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 13 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOTOBTAINED
- % ********* x'x x x 0 0 x x x x x **x**0*************
NOTE: o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
o When using a PRZR PORV select one with an operable block valve.
- a. Depressurize using normal PRZR a. IF normal spray NOT available, spray if available THEN use one PRZR PORV. IF IA NOT available, THEN refer to Attachment N2 PORVS.
IF no PRZR PORV available, THEN use auxiliary spray valve (AOV-296).
- b. Depressurize RCS until either of the following conditions satisfied:
o RCS subcooling based on core exit T/Cs - LESS THAN 10'F USING FIGURE MIN SUBCOOLING
-OR-o PRZR level - GREATER THAN 87%
[75% adverse CNMT)
- c. Stop RCS depressurization
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REV 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 14 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check If RCPs Must Be Stopped:
- a. RCPs - ANY RUNNING a. Go to Step 18.
- b. Check the following: b. Go to Step 18.
o RCP ¹1 seal D/P - LESS THAN 220 PSID
-OR-o RCP ¹1 seal leakoff - LESS THAN 0.25 GPM
- c. Stop affected RCP(s)
- x x x % * %
- x x *'* %
CAUTION x *****************
AN INCREASE IN RCS PRESSURE MAY RESULT IN EXCESSIVE REACTOR VESSEL STRESS.
RCS PRESSURE AND TEMPERATURE SHOULD BE MAINTAINED STABLE WHILE PERFORMING SUBSEQUENT STEPS IN THIS PROCEDURE.
x ************ **** *****************
x % P x x 18 Check PRZR Level GREATER Try to restore level with charging THAN 13% t'40: adverse CNMT] while maintaining stable RCS pressure. IF level can NOT be restored, THEN go to Step 25.
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REV 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 15 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored: a. Continue with Step 23. WHEN IA restored, THEN do Steps 19 o IA to CNMT (AOV-5392) - OPEN through 22.
o IA pressure - GREATER THAN 60 PSIG
- b. CCW pumps - ANY RUNNING b. Perform the following:
- 1) IF any RCP ¹1 seal outlet temperature offscale high, THEN isolate CCW,to thermal barrier of affected RCP(s).
~ RCP A, MOV-749A and MOV-759A
~ RCP B, MOV-749B and MOV-759B
- 2) Manually start one CCW pump.
- c. Verify instrument bus D c. Energize MCC'. IF MCC B NOT ENERGIZED available, THEN perform the following:
- 1) Verify MCC A energized.
- 2) Place instrument bus D on maintenance supply.
- d. Charging pump - ANY RUNNING d. Continue with Step 24. WHEN any charging pump running, THEN do Steps 20 through 24.
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i RESPONSE TO IMMINENT PRESSURIZED THERMAL REV: 10 FR-P. 1 SHOCK CONDITION PAGE 16 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE 80T OBTAINED,
- @ **x % x
- 0 x 0
- x x **4' 0'***%'***x*******
CAUTION IF RCS PRESSURE LESS THAN 250 PSIG, THEN PCV-135 SHOULD BE ADJUSTED TO ESTABLISH DESIRED LETDOWN FLOW, NOT TO INCREASE PRESSURE.
- ~******x*% *******% **** *******%
x %
- 20 Establish Normal Letdown: IF RCP seal return has been established, THEN establish excess
- a. Establish charging line flow to letdown as follows:
REGEN Hx - GREATER THAN 20 GPM o Place excess letdown divert
- b. Place the following switches to valve, AOV-312, to NORMAL.
CLOSE:
o Ensure CCW from excess letdown
~ Letdown orifice .valves open, (AOV-745) ~
(AOV-200A, AOV-200B, and AOV-202) o Open excess letdown isolation
~ AOV-371, letdown isolation valve AOV-310.
valve
~ AOV-427, loop B cold leg to o Slowly open HCV-123 to maintain REGEN Hx excess letdown temperature less than 195'F and pressure less
- c. Place letdown controllers in than 100 psig.
MANUAL at 40% open o Adjust charging pump speed as
~ TCV-130 necessary.
~ PCV-135 IF RCP seal return NOT established,
- d. Reset both for trains of AOV-371 and AOV-427 XY relays THEN excess consult TSC to determine letdown should be placed in if service.
- e. Open AOV-371 and AOV-427
- f. Open letdown orifice valves as necessary
- g. Place TCV-130 in AUTO at 105'F
- h. Place PCV-135 in AUTO at 250 psig
- i. Adj ust charging pump speed and HCV-142 as necessary
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REV 10 FR-P. RESPONSE TO IMMINENT PRESSURIZED THERMAL 1
SHOCK CONDITION PAGE 17 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 Check VCT Makeup System:
- a. Adjust boric'acid flow control valve in AUTO to 9.5 gpm
- b. Verify the following: b. Adjust controls as necessary.
- 1) RMW mode selector switch in AUTO
- 2) RMW control armed - RED LIGHT LIT
o Level - GREATER THAN 20%
- 1) Ensure BA transfer pumps and
-OR- RMW pumps running. IF NOT,
-THEN reset MCC C and MCC D UV o Level - STABLE OR INCREASING lockouts as necessary.
- 2) Place RMW flow control valve HCV-111 in MANUAL and increase RMW flow.
- 3) Increase boric acid flow as necessary.
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REV 10 FR-P. RESPONSE TO IMMINENT PRESSURIZED THERMAL 1
SHOCK CONDITION PAGE 18 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 Check Charging Pump Suction Aligned To VCT:
- a. VCT level - GREATER THAN 20% a. IF VCT level can NOT be maintained greater than 5%, THEN perform the following:
- 1) Ensure charging pump suction aligned to RWST o LCV-112B open o LCV-112C closed
- 2) Continue with Step 23. WHEN VCT level greater than 40%,
THEN do Step 22b.
b, Verify charging pumps aligned to b. Manually align valves as VCT necessary.
o LCV-112C - OPEN o LCV-112B - CLOSED 23 Check PRZR Level LESS THAN Control charging and letdown as 87% t'754 adverse CNMT] necessary to reduce PRZR level to less than 87% [75% adverse CNMT].
If necessary establish excess letdown.
IF no letdown available AND CCW to RCPs established, THEN cycle charging pumps as necessary to control PRZR level.
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REV: 10 FR-P.1 RESPONSE TO IMMXNENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 19 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: For optimum long term pressure control, saturated conditions should be restored in the PRZR.
24 Verify PRZR Liquid IF PRZR liquid temperature low, Temperature (TI-424) AT THEN energize PRZR heaters as SATURATION FOR DESIRED necessary to establish desired PRESSURE temperature.
25 Check RCS Subcooling Based On IF RCS pressure less than 160 psig Core Exit T/Cs BETWEEN O' [200 psig adverse CNMT), THEN go to AND 10'F USXNG FIGURE MIN Step 26. IF NOT, THEN depressurize SUBCOOLXNG using normal spray.
IF normal spray NOT available and letdown is in service, THEN use auxiliary spray for any "further depressurization. Return to Step 16b.
IF auxiliary spray NOT available, THEN return to Step 16a.
26 Check Cool Down Rate In RCS Return to procedure and step in Cold Legs GREATER THAN effect.
100'F IN ANY 60 MINUTES PERXOD 27 Maintain RCS Pressure And Temperature Stable For At Least 1 Hour
- a. Control steam dump and feed flow as necessary
- b. Perform actions of other procedures in effect which do not cool down the RCS or increase RCS pressure until the RCS temperature soak has been completed
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RESPONSE TO 1MMINENT PRESSURIZED THERMAL REV'0 FR-P.1 SHOCK CONDITION PAGE 20 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 28 WHEN 1 HOUR Soak Is Complete, THEN Continue RCS Cooldown And Depressurization As Necessary
- a. Maintain RCS pressure and cold leg temperature within the limits of Figure SOAK LIMITS
- b. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 50'F IN ANY 60 MINUTES PERIOD 29 Verify SI Flow Not Required: Manually operate SI pumps as necessary.
o RCS subcooling based on core exit T/Cs - GREATER THAN FIGURE IF RCS subcooling based on core MIN SUBCOOLING exit T/Cs greater than Figure MIN SUBCOOLING and no RCP running, THEN o RVLIS indication: perform the following:
o Level - GREATER THAN 68% [73% a. Establish conditions for adverse CNMTj starting an RCP:
-OR- o Bus 11A or 11B energized o Fluid fraction (any RCP o Refer to Attachment RCP START running) - GREATER THAN 80%
- b. IF conditions established, THEN start one RCP.
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REV 10 RESPONSE TO IMMINENT PRESSURIZED THERMAL FR-P. 1 SHOCK CONDITION PAGE 21 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Return To Procedure And Step In Effect
-END-
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REV 10 FR-P. 1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 1 of 1 FR-P. 1 APPENDIX LIST TITLE PAGES
- 1) FIGURE MIN SUBCOOLING
- 2) FIGURE SOAK LIMITS
- 3) ATTACHMENT RCP START
- 4) ATTACHMENT SD-1
- 5) ATTACHMENT CNMT RECIRC FANS
- 6) ATTACHMENT N2 PORVS
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REV: 10 FR-P.1 RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC S PRESSURE (PSIG) 2500 2400 2300 RCS PRESSURE INCREHENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 700 INADEQUATE SUBCOOL ING 600 REGION ADVERS E CNHT 500 400 300 200 NORMAL CNHT TEHPERATURE 100 INCREHENTS 10'F 0
200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEHPERATURE (')
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REV: 10 FR-P. RESPONSE TO IMMINENT PRESSURIZED THERMAL 1
SHOCK CONDITION PAGE 1 of 1 FIGURE SOAK LIMITS RCS PRESSURE (PSIG) 2500 2400 RCS PRESSURE 2300 INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 REMAIN 1300 BELOW 1200 CURVE 1100 1000 900 800 700 600 500 400 300 200 TEMPERATURE INCREMENTS 10'F 100 0
200 250 300 350 400 450 500 550 600 650 700 RCS COLD LEG TEMPERATURE ('F)
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