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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FR-H.4 TITLE:
RESPONSE
TO LOSS OF NORMAL STEAM RELEASE CAPABILITIES REV:
2 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 F
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FR-H.4 TITLE:
RESPONSE
TO LOSS OF NORMAL STEAM RELEASE CAPABILITIES REV:
2 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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FR-H.4 TITLE:
RESPONSE
TO LOSS OF NORMAL STEAM RELEASE CAPABILITIES REV:
2 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 o
Affected S/G MSIV(s) -
OPEN o
Either CW pump
- RUNNING o
Condenser vacuum GREATER THAN 20 INCHES HG
- b. Operate condenser steam dump manually:
- 1) Place steam dump mode selector to MANUAL a.
Perform the following
- 1) Place affected S/G(s)
ARV controller to manual and attempt to open ARV.
IF S/G ARV(s) can NOT be
2)
Go to Step 2.
- 2) Place condenser steam dump controller to MANUAL
- 3) Open steam dump valves as required
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RESPONSE
TO LOSS OF NORMAL STEAM RELEASE CAPABILITIES REV:
2 PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check RCP Status:
a.
RCPs BOTH RUNNING
- b. Stop RCP in affected loop a.
Go to Step 3.
3 Check S/G Pressures LESS THAN 1085 PSIG Perform the following:
- 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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FR-H.4 TITLE:
RESPONSE
TO LOSS OF NORMAL STEAM RELEASE CAPABILITIES REV:
2 PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Return To Procedure And Step In Effect
-END-
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FR-I.1 TITLE:
RESPONSE
TO HIGH PRESSURIZER LEVEL REV 5
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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FR-I.1 LITLE:
RESPONSE
TO HIGH PRESSURIZER LEVEL REV 5
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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FR-I.1 TITLE:
RESPONSE
TO HIGH PRESSURIZER LEVEL REV' 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 STABLE OR DECREASING Dump steam from intact S/G(s) to stabilize RCS temperature.
2 Verify Adequate SW Flow:
- a. At least three SW pumps RUNNING
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
- 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.
- c. Verify AUX BLDG SW isolation valves
- AT LEAST ONE SET OPEN
~ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- c. Establish SW to AUX BLDG.
(Refer to Attachment AUX BLDG SW.)
- d. Verify CNMT RECIRC fans annunciator C-2, HIGH TEMPERATURE ALARM -
EXTINGUISHED
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5 PAGE 4 of 12 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 3 Establish IA to CNMT:
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed CLOSED a.
Perform the following:
- 1) Close non-safeguards bus tie breakers:
-OR-o Bus 15 normal feed CLOSED
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie 2)
WHEN bus 15 restored, THEN reset control room lighting.
- b. Verify SW isolation valves to turbine buildl'ng OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- b. Manually align valves'.
Verify at least two air compressors RUNNING d.
Check IA supply:
o Pressure GREATER THAN 60 PSIG o
Pressure STABLE OR INCREASING
- 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.1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 7.
WHEN IA restored, THEN do Steps 3e and f.
e.
Reset both trains of XY relays for IA to CNMT AOV-5392
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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 CVCS Operation Can Be Established
- a. Verify IA restored:
OPEN a.
Continue with Step 7.
WHEN IA
- restored, THEN do Steps 4
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
- c. Verify instrument bus D
ENERGIZED
- 2) Manually start one CCW pump.
- c. Energize MCC B.
IF MCC B NOT available, THEN perform the following:
- 1) Verify MCC A energized.
- 2) Place instrument bus D on maintenance supply.
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PAGE 6 of 12 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 5
Check If Seal Return Flow Should Be Established:
- a. Verify RCP ¹1 seal outlet temperature LESS THAN 235'F
- b. Verify RCP seal outlet valves OPEN
= ~ AOV-270A
~ AOV-270B a.
Go to Step 7.
- b. Manually open valves as necessary.
- c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313 d.
Open RCP seal return isolation valve MOV-313
- d. Perform the following:
- 1) Place MOV-313 switch to OPEN.
- e. Verify RCP ¹1 seal leakoff flow LESS THAN 5.5 GPM
- e. IF any RCP seal leakoff flow 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
- f. Verify RCP ¹1 seal leakoff flow
'REATER THAN 0.25 GPM IF both RCP seal discharge valves are shut, THEN go to Step 7.
- f. Refer to AP-RCP.1, RCP SEAL MALFUNCTION.
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RESPONSE
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PAGE 7 of 12 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 6
Check Normal Letdown IN SERVICE Establish excess letdown as follows:
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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NOT OBTAINED 7
Check If Charging 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 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 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'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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PAGE 9 of 12 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 8
Check Normal Letdown IN SERVICE Establish Normal Letdown:
- 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 normal letdown in service, THEN secure excess letdown.
o Close excess letdown flow control valve, HCV-123.
o Close excess letdown isolation valve, AOV-310.
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NOT OBTAINED 9
Check PRZR Pressure:
a.
Pressure LESS THAN 2335 PSIG
- b. Pressure LESS THAN 2260 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. 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 PRZR To Saturation Conditions:
- a. Verify letdown
- IN SERVICE
- b. Energize PRZR heaters a.
Do NOT energize PRZR heaters.
Continue with Step 13.
WHEN letdown established, THEN energize PRZR heaters.
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FR-I.1 TITLE:
RESPONSE
TO HIGH PRESSURIZER LEVEL REV' PAGE 11 of 12 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check PRZR Spray Valves:
- a. Auxiliary spray valve (AOV-296)
CLOSED
- a. Manually close auxiliary spray 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 controllers DEMAND AT 0%
- b. Place controllers in manual at 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 87~a Perform the following:
- b. Return to Step 13.
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RESPONSE
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PAGE 12 of 12 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 15 Return To Procedure And Step In Effect
-END-
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FR-I.1
RESPONSE
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5 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 SHOCK CONDITION REV:
10 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:
4
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FR-P. 1 TlTLE:
RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 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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RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10
~ 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 THAN 250 PSIG t'465 PSIG adverse CNMT]
IF RHR flow greater than 475
- gpm, THEN return to procedure and step in effect.
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RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION.
REV 10 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 Temperatures STABLE OR INCREASING Try to stop RCS cooldown:
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.
2i
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10 PAGE 5 of 21 STEP ACTION/EXPECTED RESPONSE
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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 AVAILABLE
- b. Block valves
- AT LEAST ONE OPEN
- a. Restore power to block valves unless block valve was closed to isolate an open PORV:
~ MOV-515, MCC C position 6C
~ MOV-516, MCC D position 6C b.
Open one block valve unless it was closed to isolate an open 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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NOT OBTAINED
- x*****>*x *x x s x w
w x x x x w 0 w **0 w x x ***********
CAUTION 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 Overpressure Protection System-IN SERVICE a.
Go to Step 4d.
b.
Check RCS pressure LESS THAN 410 PSIG
- b. Perform the following:
- 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 2335 PSIG d.
Perform the following:
- 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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NOT OBTAINED 5
Check SI Pumps ANY RUNNING Go to Step 13.
6 Check If SI Can Be Terminated:
o RCS subcooling based on core exit T/Cs GREATER THAN 50'F USING FIGURE MIN SUBCOOLING o
Check RVLIS indication:
o Level (no RCPs)
GREATER THAN 68%
[73% adverse CNMTj
-OR-o Fluid fraction (any RCP running)
GREATER THAN 80%
Do NOT stop SI pumps.
Perform the following.'.
IF RCS subcooling based on core exit T/Cs greater than O'F using Figure MIN SUBCOOLING and no RCP
- running, THEN attempt to start an RCP:
- 1) Establish conditions for starting an RCP:
o Bus 11A or 11B energized o
Refer to Attachment RCP START
- 2) IF conditions established, THEN start one RCP.
b.
Go to Step 26.
- 4*****
x x *********
4 ***************
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.
x x P
P *********************
7 Reset SI
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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 ISOLATION -
EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Depress CI reset pushbutton.
10 Verify Adequate SW Flow:
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.
- 2) Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-l).
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1) 3)
Go to Step 12.
WHEN adequate SW available, THEN do Step 11.
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NOT OBTAINED 11 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 e.
Reset both trains of XY relays for IA to CNMT AOV-5392
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
's 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) Continu'e attempts to restore IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 12.
WHEN IA restored, THEN do Steps lie and f.
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 PAGE 10 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check If Charging 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 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 RWST:
o LCV-112B -
OPEN o
LCV-112C CLOSED
- b. IF LCV-112B can NOT be opened, THEN perform the following:
- 1) Verify charging pump A NOT running and place 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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10 PAGE 11 of 21 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED
- 13 Monitor SI Reinitiation Criteria:
o RCS subcooling based on core exit T/Cs GREATER THAN FIGURE MIN SUBCOOLING o
RVLIS indication:
Manually operate SI pumps as necessary and perform the following:
- a. IF RCS subcooling based on core
'xit T/Cs greater than Figure MIN SVBCOOLING and no RCP
- running, THEN attempt to start a
RCP:
o Level GREATER THAN 68%
(73%
adverse CNMTj
- 1) Establish conditions for starting an RCP:
-OR-o Fluid fraction (any RCP running)
GREATER THAN 80%
o Bus llA or 11B energized o
Refer to Attachment RCP START
- 2) IF conditions established, THEN start one RCP.
b.
Go to Step 26.
14 Check RCS Hot Leg Temperatures STABLE IF increasing, THEN control feed 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.
M~l
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV'0 PAGE 12 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Check If SI ACCUMs Should Be Isolated:
a.
Check the following:
o RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING
- a. Return to Step 13.
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
~ MOV-841
~ MOV-865
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- d. Locally reopen breakers for MOV-841 and MOV-865
- 2) Open HCV-945.
- 3) Continue with Step 16.
Do NOT decrease RCS pressure to less than unisolated ACCUM pressure.
~ \\'
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RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10 PAGE 13 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOTOBTAINED
- x*x*xx*x*xx*xx**k**x*****x****
CAUTION THE RCS SHOULD NOT BE DEPRESSURIZED TO LESS THAN SI ACCUM PRESSURE UNTIL SI ACCUMS ISOLATED.
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 spray if available
- a. IF normal spray NOT 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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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 PAGE 14 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check If RCPs Must Be Stopped:
a.
- ANY RUNNING b.
Check the following:
o RCP ¹1 seal D/P LESS THAN 220 PSID a.
Go to Step 18.
b.
Go to Step 18.
-OR-o RCP ¹1 seal leakoff LESS THAN 0.25 GPM c.
Stop affected RCP(s) x x
- x
%
- x x *'* % x ****************
CAUTION 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 THAN 13% t'40: adverse CNMT]
Try to restore level with charging while maintaining stable RCS pressure.
IF level can NOT be
- restored, THEN go to Step 25.
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 PAGE 15 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored:
OPEN o
IA pressure GREATER THAN 60 PSIG a.
Continue with Step 23.
WHEN IA
- restored, THEN do Steps 19 through 22.
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
- c. Verify instrument bus D
ENERGIZED
- d. Charging pump
- ANY RUNNING
- 2) Manually start one CCW pump.
- c. Energize MCC'.
IF MCC B NOT available, THEN perform the following:
- 1) Verify MCC A energized.
- 2) Place instrument bus D on maintenance supply.
- d. Continue with Step 24.
WHEN any charging pump running, THEN do Steps 20 through 24.
'7l G')
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i FR-P. 1 TITLE:
RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10 PAGE 16 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE 80T OBTAINED,
% *@ **xx
- 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:
- a. Establish charging line 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-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx
- c. Place letdown controllers 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. Adj ust charging pump speed and HCV-142 as necessary IF RCP seal return has been established, THEN establish excess letdown as follows:
o Place excess letdown divert
- valve, AOV-312, to NORMAL.
o Ensure CCW from excess letdown
- open, (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.
o Adjust charging pump speed as necessary.
IF RCP seal return NOT established, THEN consult TSC to determine if excess letdown should be placed in service.
J'l A
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 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:
1)
RMW mode selector switch in AUTO
- b. Adjust controls as necessary.
2)
RMW control armed RED LIGHT LIT c.
Check VCT level:
o Level GREATER THAN 20%
-OR-o Level STABLE OR INCREASING
- c. Manually increase VCT makeup flow as follows:
- 1) Ensure BA transfer pumps and RMW pumps running.
IF NOT,
-THEN reset MCC C and MCC D UV 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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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 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 VCT o
LCV-112C -
OPEN o
LCV-112B -
CLOSED
- b. Manually align valves as necessary.
23 Check PRZR Level LESS THAN 87%
t'754 adverse CNMT]
Control charging and letdown as 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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+~C 4'-.
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TO IMMXNENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10 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 Temperature (TI-424)
AT SATURATION FOR DESIRED PRESSURE IF PRZR liquid temperature
- low, THEN energize PRZR heaters as necessary to establish desired temperature.
25 Check RCS Subcooling Based On Core Exit T/Cs BETWEEN O' AND 10'F USXNG FIGURE MIN SUBCOOLXNG IF RCS pressure less than 160 psig
[200 psig adverse CNMT), THEN go to Step 26.
IF NOT, THEN depressurize 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 Cold Legs GREATER THAN 100'F IN ANY 60 MINUTES PERXOD Return to procedure and step in effect.
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
4 te 0
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TO 1MMINENT PRESSURIZED THERMAL SHOCK CONDITION REV'0 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:
o RCS subcooling based on core exit T/Cs GREATER THAN FIGURE MIN SUBCOOLING o
RVLIS indication:
o Level GREATER THAN 68%
[73%
adverse CNMTj
-OR-o Fluid fraction (any RCP running)
GREATER THAN 80%
Manually operate SI pumps as necessary.
IF RCS subcooling based on core exit T/Cs greater than Figure MIN SUBCOOLING and no RCP running, THEN perform the following:
- a. Establish conditions for starting an RCP:
o Bus 11A or 11B energized o
Refer to Attachment RCP START
- b. IF conditions established, THEN start one RCP.
A s" t tt Q 'f,'I) 1$'
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 PAGE 21 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 30 Return To Procedure And Step In Effect
-END-
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41
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TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 10 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
I
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FR-P.1 LITLE:
RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10 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 1400 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 INADEQUATE SUBCOOL ING REGION TEHPERATURE INCREHENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEHPERATURE (')
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RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV:
10 PAGE 1 of 1 RCS 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG FIGURE SOAK LIMITS REMAIN BELOW CURVE TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 RCS COLD LEG TEMPERATURE ('F)
t 4.
I