ML17250B103
| ML17250B103 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| ECA-.0, ECA-0.0, NUDOCS 9004200650 | |
| Download: ML17250B103 (48) | |
Text
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 1 of 21 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE allo T SUPERINT N
NT EFFECTIVE DATE
'0 I
4VIE%1 QA NON-QA CATEGORY 1.0 REVIEWED BY:
4 9004200650 9004iO PDR ADQCK 05000244
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EOP:
ECA-O.O LOSS OF ALL AC POWER REV:
10 PAGE 2 of 21 A.
PURPOSE This procedure provides actions to respond to a loss of all AC power.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY, CONDITIONS This procedure may be entered directly or from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, on the indication that neither train of AC emergency busses is energized.
2.
SYMPTOMS Which indicate a loss of all AC power are:
a.
Neither train of 480 volt AC emergency busses available.
EOP:
ECA-0. 0 LOSS OF ALL AC POWER REV 10 PAGE 3 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Steps 1 through 4 are IMMEDIATE ACTION steps.
o CSFSTs should be monitored for information only.
FR procedures should not be implemented.
o Local actions may require portable lighting and communication devices.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10-~~ R/hr.
O 1
Verify Reactor Trip:
o At least one train of reactor trip breakers OPEN o
Neutron flux - DECREASING o
MRPI indicates
- ALL CONTROL AND SHUTDOWN RODS ON BOTTOM Manually trip reactor.
'anually close MSIVs.
0 P
EOP:
ECA-O.O LOSS OF ALL AC POWER REV 10 PAGE 4 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED O
3 Check If RCS Is Isolated:
a.
PRZR PORVs -
CLOSED
- a. IF PRZR pressure less than 2335 psig, THEN manually close PORVs.
- b. Verify RCS isolation valves closed:
- 1) Place letdown orifice valve switches to CLOSE
~ AOV-200A
~ AOU-200B
~ AOV-202
- 2) Place letdown isolation valve switches to CLOSE
~ AOV-371
~ AOV-427
- 3) Place excess letdown isolation valve switch to CLOSE (AOV-310)
EOP:
ECA-O.O LOSS OF ALL AC POWER REV:
10 PAGE 5 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE,NOT OBTAINED O
4 Verify Adequate TDAFW Flow:
- a. Verify TDAFW pump - RUNNING
- a. Perform the following:
- 1) Verify governor valve,
, V-3652, latched.
IF governor valve tripped, THEN dispatch AO to locally reset valve.
- 2) Manually or locally open TDAFW pump steam supply, valves.
~ MOV-3505A
~ MOV-3504A
- b. Verify TDAFW pump flow - GREATER THAN 200 GPM
- b. Verify proper TDAFW valve alignment:
1)
TDAFW pump discharge valve (MOV-3996) open.
- 2) Intact S/G TDAFW pump flow control valves open.
IF NOT, THEN manually align valves as necessary.
EOP:
ECA-O.O TITLE:
LOSS 0 ALL AC POWER REV 10 PAGE 6 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o Conditions should be evaluated for Site Contingency Reporting (Refer to SC-100, GINNA STATION EVENT EVALUATION AND CLASSIFICATION).
o AO should increase surveillance of TDAFW pump until AC power is restored.
5 Try To Restore Power to Any Train Of AC Emergency Busses:
- a. Verify emergency D/G aligned for unit operation
- o Mode switch in UNIT
- a. Manually align switches on rear of MCB.
o Voltage control selector in AUTO
- b. Reset and start available emergency D/Gs - ANY D/G RUNNING
- b. Dispatch AO to locally start emergency D/Gs.
IF no emergency D/G available, THEN perform the following:
- c. Verify at least one SW pump running for each running D/G
- d. Verify at least one train of AC emergency busses
- ENERGIZED
~ Bus 14 and Bus 18
~ Bus 16 and Bus 17
- e. Return to procedure and step in effect
- 1) Direct AO to attempt to restore emergency D/G (Refer to ER-D/G.l, RESTORING D/G) 2)
Go to Step 6.
- c. Manually start pumps.
IF adequate cooling can NOT be supplied to a running D/G, THEN trip affected D/G.
- d. Manually energize AC emergency busses.
IF at least one train of AC emergency busses can NOT be energized, THEN go to Step 6.
EOP:
ECA-0. 0 TITLE:
LOSS OF ALL AC POWER REV:
10 PAGE 7 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
VHEN POVER IS RESTORED TO ANY TRAIN OF AC EMERGENCY BUSSES, RECOVERY ACTIONS SHOULD CONTINUE STARTING VITH STEP 24.
o IF AN SI SIGNAL EXISTS OR IF AN SI SIGNAL IS ACTUATED DURING THIS PROCEDURE, IT SHOULD BE RESET TO PERMIT MANUAL LOADING OF EQUIPMENT ON AN AC EMERGENCY BUS.
6 Establish The Following Equipment Alignment:
- a. Pull stop AC emergency bus loads
~ RHR pumps
~ CNMT RECIRC fans
~ CNMT spray pumps
~ SI pumps
~ CCV pumps
~ Charging pumps
~ MDAFV pumps b.. Evaluate non-vital loads (Refer to Attachment NON-VITAL)
- c. Place SV pump switches to STOP, then return to AUTO
- d. Place switches for SI pump suction from BAST to CLOSE
~ MOV-826A
~ MOV-826B
~ MOV-826C
~ MOV-826D
- e. Place switch for MOV-313, RCP seal return isolation valve, to CLOSE
EOP:
ECA-O.O TITLE:
LOSS OF ALL-AC POWER REV 10 PAGE 8 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7
Try To Restore Offsite Power:
- a. Consult Power Control to determine if either normal offsite power supply - AVAILABLE o
12B transformer via breaker 76702
-OR-o 12A transformer via breaker 75112
- a. IP normal offsite power supply NOT readily available, THEN perform the following:
- 1) Evaluate the following temporary power supplies and direct personnel to perform desired procedures:
o Security D/G to power an IA compressor (Refer to ER-ELEC.5, SECURITY DIESEL FEED TO BUS 13).
- b. Reset SI, if necessary
- c. Restore offsite power (Refer to ER-ELEC.l, RESTORATION OP OFFSITE POtIER) o TSC D/G to power a charging pump (Refer to ER-ELEC.4, TSC D/G PEED TO BUS 16 TO SUPPLY CHARGING PUMP).
o Main transformer backfeed for long term concerns (Refer to ER-ELEC.3, EMERGENCY OFPSITE BACKFEED VIA UNIT AUX TRANSFORMER).
2)
Go to Step 8.
8 Dispatch AO To Locally Isolate RCP Seals And BASTs (Refer to ATTACHMENT RCS ISOLATION)
EOP:
ECA-O.O LOSS OF ALL AC POWER REV 10 PAGE 9 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Isolate Makeup And Reject From Hotwell To CST By Placing Hotwell Level Controller (LC-107) In Manual AT 504 IF valves can NOT be manually
- closed, THEN dispatch AO to locally isolate makeup and reject lines as necessary.
~ Makeup isolation V-4058
~ Re5ect isolation V-4055 10 Check S/G Status:
a.
MFW flow control valves CLOSED
~
MFW regulating valves
~
MFW bypass valves b.
S/G blowdown and sample valves -,
CLOSED Manually close valves.
IF valves can NOT be manually
- closed, THEN dispatch AO to locally isolate the affected flow path.
0
EOP:
ECA-O.O TITLE:
LOSS OP ALL AC POWER REV:
10 PAGE 10 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
'CAUTION A FAULTED OR RUPTURED S/G THAT IS ISOLATED SHOULD REMAIN ISOLATED.
STEAM SUPPLY TO THE TDAFW PUMP MUST BE MAINTAINED FROM AT LEAST ONE S/G.
ll Check If S/G Secondary Side Is Intact:
o Pressure in both S/Gs STABLE OR INCREASING o
Pressure in both S/Gs - GREATER THAN 100 PSIG Perform the foll'owing:
- a. IF any S/G pressure decreasing in an uncontrolled manner OR completely depressurized, THEN isolate faulted S/G unless needed for RCS cooldown:
- 1) Close faulted S/G MDAFW pump discharge valve.
~ S/G A, MOV-4007
~ S/G B, MOV-4008
- 2) Close faulted S/G TDAFW flow control valve.
~ S/G A, AOV-4297
~ S/G B, AOV-4298
- 3) Verify faulted S/G ARV closed.
~ S/G A, AOV-3411
~ S/G B, AOV.-3410
- 4) Pull stop faulted S/G TDAFW pump steam supply valve.
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A IF valves can NOT be closed
- manually, THEN dispatch AO to locally close valves, as necessary, to isolate flow.
- b. Dispatch AO to complete faulted S/G isolation (Refer to Attachment FAULTED S/G).
EOP:
ECA-O.O TITLE:
LOSS OF ALL,AC POWER REV 10 PAGE 11 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check If S/G Tubes Are Intact:
o Steamline radiation monitors (R-31 and R-32) - NORMAL I
o S/G blowdown liquid monitor (R-19) - NORMAL o
Dispatch HP technician to locally check steamline radiation -
NORMAL Try to identify ruptured S/G.
Continue with Step 13.
WHEN ruptured S/G identified, THEN perform the following:
- a. Isolate ruptured S/G unless needed for RCS cooldown:
- 1) Close ruptured S/G MDAFW pump discharge valve.
~ S/G A, MOV-4007
~ S/G B, MOV-4008
- 2) Pull stop ruptured S/G MDAFW pump.
- 3) Close ruptured S/G TDAFW flow control valve.
~ S/G A, AOV-4297
~ S/G B, AOV-4298 4)
WHEN S/G pressure less than 1050 psig, THEN verify ruptured S/G ARV closed.
~ S/G A, AOV-3411
~ S/G B, AOV-3410
- 5) Pull stop ruptured S/G TDAFW pump steam supply valve.
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A IF valves can NOT be closed
- manually, THEN dispatch AO to locally close valves, as necessary, to isolate flow.
- b. Dispatch AO to complete ruptured S/G isolation (Refer to Attachment RUPTURED S/G).
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 12 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
TDAFW pump flow control valves fail open on loss of IA.
13 Check Intact S/G Levels:
- a. Narrow range level - GREATER THAN 5X [25X adverse CNMT]
~ S/G A, AOV-4297
~ S/G B, AOV-4298
- c. Control APW flow to maintain narrow range level between 17X
[25X adverse CNMT] and 50%
- a. Maintain maximum APW flow until narrow range level greater'han 5X [25% adverse CNMT] in at least one S/G.
t
- c. IP narrow range level in any'ntact S/G continues to increase in an uncontrolled
- manner, THEN return to Step 12.
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 13 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Degassing of main generator should commence as soon as possible to allow the air side seal oil backup pump to be stopped within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
14 Check DC Bus Loads:
- a. Pull stop all large non-essential DC loads o
MPW pump DC oil pumps" o
WHEN turbine is stopped, THEN stop turbine DC lube oil pump (within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />) o Evaluate other DC loads (Refer to Attachment DC LOADS)
- b. Perform the following:
- 1) Dispatch AO to locally degas main generator (Refer to Attachment GEN DEGAS) 2)
WHEN generator has been
- degassed, THEN stop air side seal oil backup pump (within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />)
~ Bus A
~ Bus B
- c. IF either DC bus less than 105 volts DC, THEN refer to ER-ELEC.2, RECOVERY PROM LOSS OF A or B DC BUS.
- d. Direct electricians to locally monitor DC power supply
- e. Dispatch personnel with DC panel key to deenergize CNMT emergency lights (DC panel turbine building basement west, switch g2)
'I t
e
~
'i a
~
v t
'3
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV:
10 PAGE 14 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION WHEN POWER IS RESTORED TO ANY TRAIN OF AC EMERGENCY BUSSES, RECOVERY ACTIONS SHOULD CONTINUE STARTING WITH STEP 24.
15 Check CST Level GREATER THAN 5 FEET Svitch to alternate AFW pump suction supply.
(Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
EOP:
ECA-O.O TiTLE:
LOSS OF ALL AC POWER REV:
10 PAGE 15 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
S/G PRESSURES SHOULD BE MAINTAINED GREATER THAN 200 PSIG TO PREVENT INJECTION OF SI ACCUM NITROGEN INTO THE RCS.
o S/G NARROW RANGE LEVEL SHOULD BE MAINTAINEDGREATER THAN 5X [25X ADVERSE CNMT] IN AT LEAST ONE INTACT S/G.
IF LEVEL CANNOT BE MAINTAINED, S/G DEPRESSURIZATION SHOULD BE STOPPED UNTIL LEVEL IS RESTORED IN AT LEAST ONE S/G.
NOTE:
o" The S/Gs should be depressurized at maximum rate to minimize RCS inventory loss.
o PRZR level may be lost and reactor vessel upper head voiding may occur due to depressurization of S/Gs.
Depressurization should not be stopped to prevent these occurrences.
o S/G ARV nitrogen pressure should be monitored and nitrogen supply bottles changed as necessary.
16 Initiate Depressurization Of Intact S/Gs To 300 PSIG:
a.
Check S/G narrow range levels-GREATER THAN 17X [25X adverse CNMT] IN AT LEAST ONE S/G
- b. Manually dump steam from intact S/Gs at maximum rate using S/G ARVs
- a. Perform the following:
- 1) Maintain maximum AFW flow until narrow range level greater than 17X [25X adverse CNMT] in at least one S/G.
- 2) Continue with Step 17.
WHEN narrow range level greater than 17X [25X adverse CNMT]
in at least one S/G, THEN do Steps 16b and 17.
b, Locally dump steam from intact S/Gs at maximum rate using S/G ARV.
P
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV:
10 PAGE 16 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
17 Check Reactor Subcritical:
- a. Verify source range detector N ENERGIZED
- b. Monitor Reactor power:
o Intermediate range, N STABLE OR DECREASING
- a. Dispatch personnel with relay rack key to turn off 120 VDC power switches in REACTOR PROTECTION racks RLTR-1 and RLTR-2 to deenergize source range block relays.
o Source
- range, N STABLE OR DECREASING NOTE:
Depressurization of S/Gs will result in a SI actuation.
SI should be reset to permit manual loading of equipment on emergency busses.
18 Check SI Signal Status:
a.
Any SI annunciator
- LIT
- b. Reset SI a.
Go to Step 22.
MHEN SI actuated, THEN do Steps
- 18b, 19, 20 and 21.
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV'0 PAGE 17 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Verify CI And CVX:
a.
CI and CVI annunciators
- LIT
~ Annunciator A-26, CNMT ISOLATXON
~ Annunciator A-25, CONTAINMENT VENTILATION ISOLATION a.
Depress manual CI pushbutton.
- b. Verify CI and CVX valve status lights - BRIGHT c.
CNMT RECIRC fan coolers SW outlet valve status lights BRIGHT
- b. Manually close CI and CVI valves.
IP valves can NOT be
- closed, THEN dispatch AO to locally close valves (Refer to Attachment CI/CVI).
- c. Dispatch AO to locally fail open valves.
~ AOV-4561
~ AOV-4562 20 Check If S/G Depressurization Should Be Stopped:
a.
Check RCS cold leg temperatures GREATER THAN 315'P
- b. Check S/G pressures
- LESS THAN 300 PSIG
- c. Manually control S/G ARVs to maintain S/G pressures at 300 psig
- a. Perform the following:
- 1) Control S/G ARVs to stop S/G depressurization.
2)
Go to Step 21.
- b. Continue with Step 21.
WHEN S/G pressure decreases to less than 300 psig, THEN do Step 20c.
- c. Locally control S/G ARVs to maintain S/G pressures at 300 psig.
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV:
10 PAGE 18 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 21 Check CNMT Pressure HAS REMAINED LESS THAN 28 PSIG o
Annunciator A-27, CNMT SPRAY-EXTINGUISHED o
CNMT pressure indicators LESS THAN 28 PSIG IF CNMT spray has actuated, THEN perform the following:
- a. Reset CNMT spray.
22 Check CNMT Radiation LESS THAN 100 R/HR Dispatch AO to locally close following valves, as necessary:
~ MDAFV pump discharge valves
~ MOV-813 and MOV-814, CCV to and from CNMT 23 Check If AC Emergency Power Is Restored AT LEAST ONE TRAIN OF AC EMERGENCY BUSSES ENERGIZED
~ Bus 14 and Bus 18
~ Bus 16 and Bus 17 Continue to control RCS conditions and monitor plant status:
a.
Check status of desired actions:
o AC power restoration o
RCP seal isolation o
DC power supply
- b. Dispatch AO to locally check BAST temperature.
IF temperature less than 155'F, THEN dispatch personnel to dilute BASTs (Refer to ER-BA.l, BAST TEMPERATURE CONCERN - LOSS OF ALL AC).
- c. Return to Step 11.
EOP:
ECA-O.O LOSS OF ALL AC POWER REV:
10 PAGE 19 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 24 Manually Control S/G ARVs To Stabilize S/G Pressures Locally control S/G ARVs.
NOTE:
SW isolation may o'ccur when power is restored to AC emergency busses.
25 Verify SW System Operation:
a.
Check normal power available to SV pumps o
Bus 17 normal feed breaker-CLOSED
-OR-o Bus 18 normal feed breaker-CLOSED
- a. IP both D/Gs operating, THEN ensure one SW pump running for each D/G.
IP only one D/G operating, THEN perform the following:
- 1) Ensure at least one SV pump running.
- 2) Manually perform SV
'isolation.
- b. Verify two SW pumps - RUNNING 3)'o to Step 26.
- b. IP normal power available, THEN manually start SV pumps as necessary.
IP adequate cooling can NOT be supplied to a running D/G, THEN trip affected D/G and refer to ER-D/G.l.
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 20 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION THE LOADS PLACED ON THE, ENERGIZED AC EMERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OP THE POVER SOURCE.
1 26 Verify Following Equipment Loaded On Available AC Emergency Busses:
o 480 volt MCCs - ENERGIZED Manually load equipment as power supply permits.
+ MCC C from Bus 14
~
MCC D from Bus 16 o
Verify instrument busses-ENERGIZED
~ Bus A from MCC C (A battery)
~ Bus B from MCC C
~ Boa C from MCC D (B battery) o Dispatch personnel to verify proper operation of battery chargers
i
EOP:
ECA-O.O LOSS OF ALL AC POWER REV:
10 PAGE 21 of 21 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 27 Select Recovery Procedure:
a.
Check RCS subcooling based on core exit T/Cs - GREATER THAN O'F USING FIGURE MIN SUBCOOLING
- b. Check PRZR level - GREATER THAN 5%
[30% adverse CNMT]
- c. Check SI annunciators-EXTINGUISHED
~ D-19, PRESSURIZER LO PRESS 1750 PSIG
~ D-21, STEAM LINE LOOP A LO LO PRESS 514 PSIG
~ D-22, STEAM LINE LOOP B LO LO PRESS 514 PSIG
~ D-28, CONTAINMENT PRESSURE 4 PSIG a.
Go to ECA-0.2, LOSS OF ALL AC
'OWER RECOVERY WITH SI REQUIRED, Step l.
b.
Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step l.
- c. IF SI signal is present and was NOT previously reset, THEN go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
d.
Go to ECA-O.l, LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED, Step 1
-END-
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 1 of 1 ECA-O.O APPENDIX LIST h
TITLE PAGES 1)
FIGURE MIN SUBCOOLING 2)
FIGURE SDM 3)
ATTACHMENT DC LOADS 4)
ATTACHMENT FAULTED S/G 5)
ATTACHMENT RUPTURED S/G 6)
ATTACHMENT CI/CVI 7)
ATTACHMENT NONVITAL 8)
ATTACHMENT GEN DEGAS 9)
ATTACHMENT RCS ISOLATION
EOP:
ECA-O.O LOSS OF ALL AC POWER REV 10 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication S
PRESSURE (PSIG)
RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
20 RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION INADEQUATE SUBCOOLING REGION ADVERSE CNMT NORMAL CNMT TEMPERATURE INCREMENTS 10'R 0
250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('R)
EOP:
ECA-O.O TITLE:
LOSS OF ALL AC POWER REV 10 PAGE 1 of 1 FIGURE SDM BORON CONCENTRATION (PPM) 1800 1600 BORON INCREMENTS 20 PPM 1400 1200 ADEQUATE SDM 1000 soo 600 400 ORA E 200 BURNUP INCREMENTS 100 MVD/MTU 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CYCLE BURNUP (MVD/MTU)
NOTE: To obtain core burnup, use PPCS turn on code BURNUP.