ML17263A596
| ML17263A596 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/30/1994 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A585 | List:
|
| References | |
| ECA-.1, ECA-0.1, NUDOCS 9404190152 | |
| Download: ML17263A596 (46) | |
Text
EOP:
ECA-0. 1 T1TLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 1 of 20 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 8
0 1
PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
.;.9404190152 940414
'DR ADOCK 05000244 P
'jJj
1 t("
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ECA-0. 1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 2 of 20 A.
PURPOSE This procedure provides actions to use normal operational systems to stabilize plant conditions following restoration of AC emergency power.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
ECA-O.O, LOSS. OF ALL AC POWER, when AC emergency power is restored and SI is not required.
I e-
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 3 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AN SI SIGNAL IS ACTUATED PRIOR TO PERFORMING STEP 10 OF THIS PROCEDURE, THEN SI SHOULD BE RESET TO PERMIT MANUAL LOADING OF EQUIPMENT ON AN AC EMERGENCY BUS.
NOTE:
o CSFSTs should be monitored for information only.
FR procedures should not be implemented prior to completion of Step 10.
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 Check RCP Seal Isolation Status:
a.
RCP seal injection needle valves CLOSED
~ V-300A
~ V-300B
b.
~ MOV-759A
~ MOV-759B
- b. IF valves open or position not
- known, THEN check CCW pump status:
- 1) IF pump running, THEN go to Step 2.
- 2) IF pump NOT running, THEN manually close valves.
IF valve{s) can NOT be
~ AOV-754A
~ AOV-754B
C'I
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 4 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check CI Annunciator A-26, CONTAINMENT ISOLATION EXTINGUISHED Perform the following:
a.
Depress CI reset pushbutton
- b. Verify annunciator A-26, CONTAINMENT ISOLATION, extinguished.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 5 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
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 b.
Check at least two SW pumps RUNNING
- c. Verify turbine building SW isolation valves OPEN
- b. Manually start SW pumps as power supply permits (258 kw each).
IF less than two SW pumps
- running, THEN go to Step 4.
- c. Manually align valves' MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- d. Start at least
'two air compressors (75 kw each) e.
Check IA supply:
o Pressure
- GREATER THAN 60 PSIG o
Pressure
- STABLE OR INCREASING
OPEN
- d. IF air compressors can NOT be
- started, THEN dispatch AO to locally reset compressors as necessary.
e.
Perform the following:
- 1) Continue attempts to restore IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 6.
WHEN IA restored, THEN do Steps 3f through 5.
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ECA-0.1 TlTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT Sl REQUIRED REV:
9 PAGE 6 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION THE LOADS PLACED ON THE ENERGIZED AC EMERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OF THE POWER SOURCE.
4 Manually Load Folloving.
Equipment On AC Emergency Busses:
- a. Start one CCW pump (124 kw)
- b. Energize MCCs as power supply permits
~ MCC A from Bus 13
~ MCC B from Bus 15
~ MCC E from Bus 15
~ MCC F from Bus 15
- c. Verify instrument bus D-ENERGIZED d.
WHEN bus 15 restored, THEN reset control room lighting
- e. Start at least one CNMT RECIRC fan
- f. Restore Rx hea'd cooling as power supply permits:
- 2) Start one Rx compartment cooling fan (23 kw each)
- 3) Start both control rod shroud fans (45 kw each)
- g. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
1)
Go to Step 5.
- 2) 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)
- 3) Manually start at least one fan (45 kw)
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9 PAGE 7 of 20 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 5
Check If Charging Flow Has Been Established:
- a. Charging pumps
- ANY RUNNING
- a. Perform the following:
- 1) Ensure seal injection needle valves to both RCPs isolated:
~ 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 place in PULL STOP.
- c. Start charging pumps (75 kw each) as necessary and adjust charging flow to restore PRZR level
- 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).
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9 PAGE 8 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- 6 Monitor SI Initiation Criteria:
a.
RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
PRZR level - GREATER THAN 5%
[30% adverse CNMT]
a.
Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
4
- b. Control charging flow to maintain PRZR level.
IF PRZR level can NOT be maintained, THEN go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step l.
7 Check PRZR Level GREATER THAN 134
[404 FOR ADVERSE CONTAINMENT]
Control charging flow as necessary.
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ECA-0. 1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 9 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- % * *
- 4' CAUTION o
IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY i(REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
o IF S/G NR LEVEL DECREASES TO LESS THAN 5%
[25% ADVERSE CNMT] AND FEED FLOW IS LESS THAN 200
- GPM, THEN THE MDAFW PUMPS SHOULD BE MANUALLYLOADED ON AC EMERGENCY BUS TO SUPPLY WATER TO THE S/G(S).
NOTE:
o If MDAFW pump operation is not required, pump switches should be maintained in PULL-STOP to prevent automatic start.
o TDAFW pump flow control valves fail open on loss of IA.
- 8 Monitor 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 5%
[25%
adverse CNMT] in at least one S/G.
IF feed flow less than 200 gpm, THEN perform the following:
- 1) Verify MDAFW pump discharge valves open.
~ MOV-4007
~ MOV-4008
- b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT] and 39%
- 2) Manually start MDAFW pumps as necessary (228 KW each).
l 0
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REVT 9
PAGE 10 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Establish S/G Pressure Control:
- a. Adjust S/G ARV controllers to maintain existing S/G pressure
- b. Verify S/G ARV controllers in AUTO
- c. Dispatch AO to perform Attachment SD-2 4 ******************
CAUTION IF AN SI SIGNAL IS ACTUATED AFTER THE SI PUMP SWITCHES ARE PLACED IN AUTO, THEN ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, SHOULD BE PERFORMED.
C NOTE:
Safeguards pump switches should be placed in AUTO only if associated bus is energized.
10 Place Following Pump Switches In AUTO:
~ SI pumps
~ RHR pumps
~ CNMT spray pumps
K I
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ECA-0. 1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV' PAGE 11 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
FR procedures may now be implemented as necessary.
t 11 Verify Adequate SW Flow To CCW Hx:
- a. Verify at least two SW pumps RUNNING
- b. Verify AUX BLDG SW isolation valves OPEN
- a. Manually 'start pumps as power supply permits (258 kw each).
IF less than two SW pumps can be
- operated, THEN go to Step 19.
+ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- c. Verify CNMT RECIRC fan annunciator C-2, HIGH TEMPERATURE ALARM - EXTINGUISHED Continue with Step 19.
WHEN SW restored to AUX BLDG, THEN do Steps llc through 18.
- c. Dispatch AO to locally throttle flow to CCW Hx to between 5000 gpm and 6000 gpm total flow, 12 Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored:
OPEN o
IA pressure GREATER THAN 60 PSIG
- a. Continue with Step 19.
WHEN IA
- restored, THEN do Steps 12 through 18.
- b. Charging pump
- ANY RUNNING
- b. Continue with Step 19.
WHEN any charging pump running, THEN do Steps 13 through 18.
r<
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ECA-0.1 TlTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 9
PAGE 12 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
RCP THERMAL BARRIER COOLING SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE POTENTIAL INTRODUCTION OF STEAM INTO THE CCW SYSTEM AND THERMAL SHOCK TO RCP.
o RCP SEAL INJECTION SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE RCP THERMAL STRESSES AND POTENTIAL SEAL FAILURES.
o AS PART OF SUBSEQUENT RECOVERY ACTIONS, RCP(S)
SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION UNLESS REQUIRED BY AN INADEQUATE CORE COOLING SITUATION.
NOTE:
SW should be aligned to CCW Hxs before restoring RCP seal cooling.
13 Check RCP Cooling:
a.
Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o
Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED b.
Check RCP seal injection:
o Labyrinth seal D/Ps
- GREATER THAN 15 INCHES OF WATER
-OR-o RCP seal injection flow to each RCP
- GREATER THAN 6 GPM
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ECA-0. 1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 9
PAGE 13 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 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 15.
- b. Manually open valves as necessary.
- c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313 if necessary d.
Open RCP seal return isolation valve MOV-313
- e. Verify RCP ¹1 seal leakoff flow LESS THAN 5 '
GPM
'. Perform the following:
- 1) Place MOV-313 switch to OPENS
'valve:
~ RCP A, AOV-270A
~ RCP B, AOV-270B
- f. Verify RCP ¹1 seal leakoff flow GREATER THAN 0.25 GPM IF both RCP seal discharge valves are shut, THEN go to Step 15.
- f. Refer to AP-RCP.l, RCP SEAL MALFUNCTION.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 9
PAGE 14 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Verify PRZR Level GREATER THAN 134 r404 adverse CNMT]
Continue with Step 19.
WHEN PRZR level increases to greater than 13%
(40% adverse CNMT], THEN do Steps 16 through 18.
16 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 25% open
~ TCV-130
~ PCV-135
- d. Reset both trains of XY relays for AOV-371 and AOV-427 if necessary 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 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.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 15 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check VCT Makeup System:
- a. Verify the following:
- 1) Boric acid flow control val~e SET FOR REQUIRED CS1)
CONCENTRATION (Refer to Figure SDM)
- 2) At least one BA and RMW pump in AUTO
- a. IF VCT auto makeup can NOT be established, THEN manually control VCT level (Refer to ER-CVCS.1, REACTOR MAKEUP CONTROL MALFUNCTION).
3)
RMW mode selector switch in AUTO 4)
RMW.control armed RED LIGHT LIT
- b. Check VCT level o
Level -
GREATER THAN 20%
-OR-o Level - STABLE OR INCREASING
- b. Manually increase VCT makeup flow as follows:
- 1) Ensure BA transfer pumps and RMW pumps running.
IF NOT, THEN dispatch AO to reset MCC C and MCC D UV lockouts as necessary.
- 2) Place RMW flow control valve
, HCV-ill in MANUAL and increase RMW flow.
- 3) Increase boric acid flow as necessary.
IF VCT level can NOT be
- restored, THEN go to Step 19.
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ECA-0. 1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 9
PAGE 16 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 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
- 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 40%,
THEN do Step 18b.
- b. Manually align valves as necessary.
19 Control PRZR Level:
a.
Check letdown - IN SERVICE
- b. Maintain PRZR level between 13%
[40% adverse CNMT] and 50%
a.
Stop and start charging pumps as necessary to control PRZR level.
'J
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ECA-0. 1 T!TLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 17 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 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.
20 Establish PRZR Pressure Control:
a.
Check letdown - IN SERVICE a.
Perform the following:
- b. Use PRZR heaters and auxiliary spray valve (AOV-296) to maintain RCS pressure
IF IA NOT available, THEN Refer to Attachment N2 PORVS to operate PORV.
2)
Go to Step 21.
21 Verify Natural Circulation:
o RCS subcooling based on core exit T/Cs
- GREATER THAN O' USING FIGURE MIN SUBCOOLING Increase dumping steam from intact S/Gs.
o S/G pressures
- STABLE OR DECREASING o
RCS hot leg temperatures.-
STABLE OR DECREASING o
Core exit T/Cs
- STABLE OR DECREASING o
RCS cold leg temperatures
- AT SATURATION TEMPERATURE FOR S/G PRESSURE
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 18 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
22 Check If Source Range Detectors Should Be Energized:
a.
Source range channels DEENERGIZED a.
Go to Step 22e.
b.
Check intermediate range flux-EITHER CHANNEL LESS THAN 10 10 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 10 AMPS
- 2) Continue with Step 23.
MiEN flux is LESS THAN 10-10 ~ps on any operable
- channel, THEN do Steps 22c through e
~
- c. Continue with Step 23.
WHEN either condition met, THEN do Steps 22d 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 IF source ranges can NOT be
- restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 23.
U
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 19 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 23 Verify Adequate Shutdown Margin:
- b. Borate as necessary.
24 Maintain Stable Plant Conditions a.
RCS pressure
- STABLE b.
RCS temperature
- STABLE c.
PRZR level -
BETWEEN 138
[408 adverse CNMT] and 508
- d. Intact S/G level BETWEEN 178
[258 adverse CNMT] and 398
- a. Control PRZR heaters and auxiliary spray if available.
- b. Control dumping steam as necessary.
- c. Control charging as necessary.
- d. Control S/G feed flow as necessary.
- 25 Monitor SI Initiation Criteria:
a.
RCS subcooling based on core exit T/Cs
- GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
PRZR level - GREATER THAN 58
[308 adverse CNMT]
a.
Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
- b. Control charging flow to maintain PRZR level.
IF PRZR level can NOT be maintained, THEN go to ECA-0.2,
-LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
EOP:
ECA-0 1
T!TLE:
. LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 9
PAGE 20 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 26 Try To Restore Offsite Power To All AC Busses (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER)
Maintain plant condition stable using AC emergency power.
27 Determine If Natural Circulation Cooldown Is Required:
- a. Consult plant staff to determine if RCS cooldown is necessary
- b. At least one RCP
- OPERABLE
- a. IF cooldown NOT required, THEN go to 0-3, HOT SHUTDOWN WITH XENON PRESENT.
b.
Go to ES-0.2, NATURAL CIRCULATION COOLDOWN.
c.
Go to 0-2.2, PLANT SHUTDOWN FROM HOT SHUTDOWN TO COLD SHUTDOWN
-END-
l
ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 1 of 1 ECA-0. 1 APPENDIX LIST TITLE PAGES 4
4 1)
FIGURE MIN SUBCOOLING 2)"
FIGURE SDM 3)
ATTACHMENT SD-1 4)
ATTACHMENT SD-2 5)
ATTACHMENT N2 PORVS 6)
ATTACHMENT SEAL COOLING 7)
ATTACHMENT AUX BLDG SW
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below t-] 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 INCREMENTS 20 PSIG SUBCOOLEO REGION DVE E
C RS NORMAL CNHT INADEQUATE SU 8 COOL ING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
4
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ECA-0.1 TlTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
9 PAGE 1 'of 1
FIGURE SDM NOTE:
o Curve includes allowance for one stuck rod.
Add 100 ppm for each additional stuck rod.
o To obtain core burnup, use PPCS turn on code BURNUP.
BORON CONCENTRATION (PPH) 1800 1600 BORON INCREMENTS 20 PPH 1400 1200 1000 ADEQUATE SDM 100 PPM CONSERVATISH INCLUDED 800 600 400 BORA 200 BURNUP INCREMENTS 100 MWD/HTU 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 24 BURNUP (MWD/HTU)
I lt'h 4
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t 1I
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