ML20024A436
| ML20024A436 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 05/31/1983 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20024A433 | List: |
| References | |
| 2-0030140, 2-30140, NUDOCS 8306170292 | |
| Download: ML20024A436 (15) | |
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i Page 1 of 14 EMERGENCY PROCEDURE 2-0030140 REV. 4 B0
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1 FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNIT 2
,, EMERGENCY PROCEDURE NUMBER 2-0030140 3 REVISION 4
'J l BIACKOUT OPERATION t (BO) 4
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-i TOTAL NUMBER OF PAGES: 14 i
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Paga 2 of 14
- m. l FLORIDA PO'4ER & LIGHT COMPANY 4
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ST. LUCIE UNIT 2 / '
EMERGENCY PROCEDURE NUMBER 2-0030140 REVISION 4 I
1.0 SCOPE
This procedure provides the action to be taken in the event of a complete loss of off-site electrical power concurrent with a Turbine trip.
2.0 SYMPTOMS :
2.1 Alarms associated with the loss of operating plant components.
2.2 Loss of normal Control Room lighting and DC lighting energized.
2.3 Reactor and Turbine trip.
2.4 Emergency Diesel Generators start.
2.5 Reactor Coolant Pump trip and Main Feedwater Pump trip.
3.0 AITIOMATIC ACTIONS:
NOTE: Any Automatic Actions that should occur and do not, must be manually initiated.
AUTOMATIC ACTION INITIATING EVENT 3.1 Reactor Trip 3.1 RCS Low Flow <95%
} 3.2 Turbine Trip 3.2 Reactor trip bus low voltage 3.3 Generator lock-out 3.3 Turbine trip /Bkrs closed i
3.4 Generator breakers open 3.4 Turbine Trip 3.5 Incoming feeder breakers 3.5 Startup transformer open to 4160V and 6900V buses breakers fail to close 3.6 Tie breakers between normal 3.6 Undervoltage on 2A2 and 2B2 4160V buses (2A2 and 2B2) and 4160 buses the emergency 4160V buses (2A3 and 2B3) open 3.7 Ties between essential and 3.7 Undervoltage on Emergency non-essential sections of 480V MCCs
, emergency 480V MCCs open
ST. LUCIE UNIT 2 Paga3ofp(~~5g EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 i
p, 4
_,3 l f BLACKOUT OPERATION g 3.0 IMMEDIATE AITr0MATIC ACTIONS: (Cont.)
/
AUTOMATIC ACTION INITIATING EVENT
- 3.8 Breakers open for the following 3.8 Diesel load shedding sequence non-safety related loads which are normally fed from emergency buses NOTE: These loads can be manually reconnected to the emergency buses as needed (approximate starting KVA in parentheses).
Reactor cavity sump pump 2A and 2B (55.7 KVA each) ,
120/208 Power Panel 221 transformer (45 KVA)
Lighting Panel transformers 210, 212, 214, 225, 226 (45 KVA each, 226 = 15 KVA)
Incoming feeder from 2A2 and 2B2 4160V buses (load dependent)
RCP oil lift pumps (B pumps only - A pumps running) (40.3 KVA each)
Pressurizer relief isol valves (1476 and 1477) (12.5 KVA each) 480V Lighting Panel 2-2A1, 2-2B1, 2-2A2 and 2-2B2 (required at night for security) (45 KVA each except 2-2B2 = 15 KVA)
Waste management heat tracing transformers 2A and 2B (45 KVA each)
Air conditioner HVA-4, ACC-4 (45 KVA)
Power Panel 220 (45 KVA) a Lighting Panels 213, 209, 215, (45 KVA each)
Lighting Panels 216, 230 (15 KVA each)
Refueling water to charging pumps (V-2504) (12.5 KVA)
Boric Acid batching tank heaters (63.6 KVA)
NOTE: Maximum starting KVA of the D/G = 28,500 KVA l
Available starting KVA = 28,500 - [(Bus Volts) X (Bus Amps) X 1.732]
- CAUTION *** .
These loads could create overload conditions if proper care is not taken to ensure there is adequate margin on the D/G for them. It should be determined there is sufficient starting KVA available prior to energizing these loads, then only energize one at a time and re-evaluate the D/G load.
/R4
Paga 4 of 14 ST. LUCIE UNIT 2 EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 :
BLACKOUT OPERATION l'
. 3.0 IMMEDIATE ALTr0MATIC ACTION: (Cont.)
4 AUTOMATIC ACTION INITIATING EVEKr
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3.9 All loads on emergency buses 3.9 Diesel load shedding sequ uu.
are tripped except the I following:
J Boric Acid Makeup Pumps Charging Pumps Emergency lighting Class I power panels RCP oil lif t pumps (A pumps only - B pumps off)
Diesel fuel oil transfer pump 3.10 2A and 2B Diesel Generators 3.10 Undervoltage on 2A3 and 2B3 start and energize 4160V 4160V buses emergency buses 2A3, 2B3, and 2AB and loads listed in Step 3.9.
3.11 Subsequent loads are started 3.11 Diesel Generator loading at three second intervals sequence (See Table 1, Emergency Diesel Generator Loading Sequence).
3.12 Auxiliary Feedwater auto start 3.12 2A or 2B Steam Generator
, initiates level decreases to 20.6%
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Prga 5 of 14 ST. LUCIE UNIT 2 EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 BLACK 0fft OPERATION 9 !
4.0 IMMEDIATE OPERATOR ACTION:
ACTION LOCATIONS 4.1 Trip Turbine and Reactor 4.1 RTGB-201 and 204 manually 4.2 Check all CEAs are fully 4.2 RTGB-204 and top of RPS inserted and reactor trip Panels breakers are open 4.3 Check turbine valves are 4.3 RTGB-201 closed 4.4 Check generator exciter supply 4.4 RTGB-201 breaker and generator breakers 8W49 and 8W52 are open 4.5 Place reheater control system 4.5 RTGB-201 in MANUAL, close TCVs 4.6 Check that Diesel Generators 4.6 RTGB-201 have started and are feeding only emergency buses 4.7 Open startup transformer 4.7 RTGB-201 breakers 4.8 Reduce Tavg to reference 4.8 RTGB-203 setpoint by manual operation of the steam dump valves to atmosphere 4.9 Isolate steam generator 4.9 RTGB-206 blowdown 4.10 Verify 2C steam-driven AFW 4.10 RTGB-202 pump has started and has established flow to the Steam Generators. If AW pumps have started due to the auto start feature, the motor driven pumps may be secured, if desired I
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ST. LUCIE UNIT 2 EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 f#
BLACKOUT OPERATION ,w 5.0 SUBSEQUENT' ACTIONS: p 5.1 Implement the Emergency Plan as necessary in accordance with EPIP 3100021E, " Duties of the Emergency Coordinator."
5.2 Verify adequate natural circulation flow by ensuring that hot and cold leg temperatures, Pressurizer pressure and level stabilize within approximately 15 minutes. The core eh T should be <49 F ( Ah T for full power).
- 1. If the above conditions are not established:
A. Check RCS temperature and pressure to ensure that 0
the RCS is at least 20 F subcooled. /R4 B. Ensure AFW flow to the Steam Generators has been initiated and the steam dumps to atmosphere are in operation.
C. Refer to E0P 2-0120043, " Inadequate Core Cooling."
- 2. Return at least one RCP in each loop to operation as soon as of f-site power is available and the requirements for pump restart are satisfied in accordance with EOP 2-0120040, Paragraph 5.8.
5.3 Start equipment in Table 1, if required.
5.4 If one Diesel f ails to start, attempt a manual start.
- 1. If manual start attempt is unsuccessful, an operator should be sent to the diesel local control station to inspect status of local alarm panel.
- 2. If no alarms are present on the local alarm panel, an inspection of the overspeed trip lever should be made to ensure it has not tripped.
- 3. If the overspeed trip levers are latched, the Normal / Isolate switches on the local control panel should be placed in the ISOLATE position and a local start attempt should be made.
4 Refer to OP 2-2200020 and OP 2-2200050.
5.5 Locally open Condenser Vacuum breakers (MV-10-1A and MV-10-13).
Locally close MSR main steam block valves (MV-08-4, MV-08-6, MV-08-8, and MV-08-10).
5.6 Check MSR warm-up valves (MV-08-5, MV-08-7, MV-08-9, and MV-08-11) to be closed or close manually.
/R4
Paga 7 of 14jpa .
ST. LUCIE UNIT 2 f EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 ) )
BLACKOUT OPERATION I J
5.0 SUBSEQUENT ACTION: ( Cont . )
- CH K !
5.7 Send an operator to align and start emergency cooling water to the Instrument Air Compressor, then reset Control Room handswitch and manually start the Instrument Air Compressor (Plant Auxiliaries Control Panel).
CAUTION: Do not overload the Diesel Generators when starting additional equipment (36,85 KW maximum continuous rating).
5.8 When Diesel Generator power is available, energize equipment as may be required for plant safety and to achieve an orderly shutdown within the Diesel Generator load limitations as follows:
- 1. Verify one set of reactor cavity and reactor support cooling fans operating. If not, start one set.
?
- 2. Lock out automatic starting equipment that is not in service.
- 3. Manually open all breakers on any non-vital bus or Motor Control Center that is to be re-energized.
4 Reset lockout relays for each required bus to allow closing of feeder breakers.
5.9 Remove the following components from service:
Steam jet air ejectors Priming ejector Auxiliary priming ejector Auxiliary steam to RAB Gland seal system 5.10 Start 2A and 2B CEDM cooling fans.
5.11 Start 2A and 2B reactor support cooling fans.
CAUTION: Consider equipment starting requirements.
Alternate operation of equipment may be required to avoid overloading the Diesel Generators (3685 KW maximum continuous rating).
/R4 I
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PKga 8 of 14 ST. LUCIE UNIT 2 <
EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 -
BLACKOUT OPERATION i
5.0 SUBSEQUENT ACTIONS: (Cont.)
CHE 5.12 Manually close breakers for Pressurizer heater buses on OVERRIDE position and reset the Backup heater breakers.
This should be accomplished within two hours following the loss of of f-site power.
CAUTION: Consider equipment starting requirements. Alternate operation of equipment may be required to avoid overloading the Diesel Generators (3685 KW maximum continuous rating).
NOTE: The above actions will only energize B-1 and B-4 banks of Backup heaters.
5.13 Check that the Bearing Oil Lift Pump starts automatically when Turbine speed decreases to approximately 600 rpm.
5.14 Start oil reservoir vapor extractor and generator oil vapor extractor.
5.15 Check that the turning gear engages and starts automatically when turbine speed decreases to zero rpm, or manually engage it.
5.16 Reduce the flow of cooling water to maintain the temperature of the oil leaving the turbine lube oil and the air side and hydrogen side oil coolers between 950F - 1000F.
5.17 Isolate cooling water supply to the Generator hydrogen coolers.
5.18 If additional Condensate Storage Tank water is required, have Unit 1 personnel place the Water Treatment Plant in service.
5.19 Place the Spent Fuel Pool Cooling Pump in operation as necessary.
NOTE: With spent fuel element assemblies from 3-1/3 cores present, the Spent Fuel Pool can safely withstand at least five hours without cooling before reaching the boiling point.
l 5.20 Periodically check fuel oil levels in the Diesel Generator day tanks to confirm proper operation of the fuel oil transfer system and to ensure uninterrupted Diesel Generator operation.
l 5.21 Sample and analyze the reactor coolant to determine if fuel j element clad failure has occurred, i
5.22 Determine expected duration of power outage. If unable to do so or if outage is to be prolonged, borate RCS to Cold Shutdown concentration.
i /R4
i P ga 9 of 14 ST. LUCIE UNIT 2 3
EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 i t
1 r ^.
BLACKOUT OPERATION ,
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5.0 SUBSEOUENT ACTIONS: (Cont.)
CH K j
5.23 If the outage will exceed four hours and the RWT is available, proceed to Cold Shutdown conditions utilizing natural circulation, atmospheric steam dump and feedwater addition.
Refer to E0P 2-0120040, " Natural Circulation /Cooldown."
Place Shutdown Cooling in service when appropriate temperatures and pressures are reached.
NOTE: Do not begin plant cooldown until Cold Shutdown boron concentration is verified.
5.24 If Pressurizer cooldown cannot be accomplished in a timely manner from the addition of cooler liquid (auxiliary spray) from the Charging Pump via the Pressurizer spray line, proceed with the alternate positive means of depressurization as follows:
- 1. Place the switches for the Power Operated Relief Valves (V-1474 and V-1475) in the OVERRIDE position.
- 2. Initiate a high Pressurizer pressure trip signal on two RPS channel trip units.
- 3. Place the switch for either Power Operated Relief Valve (V-1474 or V-1475) in the OFF position and vent the Pressurizer to the Quench Tank. Return the switch to OVERRIDE to close valve.
- 4. Control the rate of cooldown and depressurization by selective operation of the Power Operated Relief Valves in this mode until cooldown via the auxiliary spray valves can be initiated.
t 5.25 When normal AC power is available:
- 1. Restore bus sections to their normal supplies.
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- 2. Place the Diesel Generator System in standby lineup as per
, OP 2-2200020.
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- 3. Restore all plant systems to normal.
/R4
Pege 10 of 14 ST. LUCIE UNIT 2 EHERGENCY PROCEDURE NUMBER 2-0030140, REVISION 4 .m !
BLACKOUT OPERATION l
6.0 DISCUSSION
6.1 A loss of power to the 41,60V buses results in a loss of power to all d 480V Load Centers and Motor Control Centers and to all l instrumentation not fed directly or indirectly from the station battery. A reactor trip will occur from a low reactor coolant flow rate signal due to the loss of power to the 6900V buses supplying the Reactor Coolant Pumps and will be accompanied by a Turbine Trip and Generator lockout.
6.2 Steam dump to atmosphere must be used to remove reactor decay heat. Initially, Steam Generator safety valves may actuate to augment the steam flow and to help control Steam Generator pressure immediately after the trip.
6.3 On-site power will be supplied by the Emergency Diesel Generators.
6.4 A rapid reduction in Steam Generator water levels will occur due to the reduction of the Steam Generator void fraction on the secondary side and also because steam flow will continue af ter normal feedwater flow stops. Auxiliary feedwater flow will automatically initiate after the first Steam Generator level reaches 20.6%
(2/4 logic).
6.5 Core decay heat removal is accomplished by natural circulation in the reactor coolant loops.
6.6 Core damage is not expected as a result of a loss of power condition since the Steam Generators are maintained as a heat sink and RCS pressure and inventory control are available.
6.7 If operating under blackout conditions and an Engineered Safety Features Actuation signal occurs, any non-emergency loads that are running will be automatically tripped and the required emergency loads will be automatically started.
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Page 11 of 14 -
ST. LUCIE UNIT 2 EMERGENCY OPERATING PROCEDURE 2-0030140, REVISION 4 HLACKOUT OPERATION TABLE 1 DIESEL CENERATOR LOADING SEQUENCE R&NI!C 11MD (IGt)
Ibr Naninal UrA Diesel Ioal or Shutdown (Recirculation) Main Steas Line Autanatic Startirg Cerwrator Kaneplate Startirg Timirg With loss of Off- With loss of Off- Break With Ioss of ITIM DIulpnert (4) Qiantity HP KVA Sequence Site her (II)0P) Site Pbwer (IIl0P) Offsite her (Ill0P) 1 High Pressure Safety Inj. nsup 1 400 2422.0 0 Sec. - 324 324 2 Motor Operatal Valves Iot - -
0 Sec. 6.7 27.2 33.1 3 Bettercy Lightirg lot - -
0 Sec. 125 125 125 4 her Panels Iot - -
o Sec. 195 195 195 5 Diesel 011 Transfer Runps 1 3 21.5 0 Sec. 3 3 3 6 RCP Oil Lift Rsngs 4 10 66.85 0 Sec. 40 20 20 7 thinterruptibic her Supply 1 - -
0 Sec. 55 55 55 8 INAC Ihangers Int - -
0 Sec. 4 4 4 9 INAC Valves Int - -
0 Sec. 1.5 1.5 1.5 10 low Pressure Safety Inj. nsnp 1 400 2183.3 3 Sec. 274 321 274 11 Gmtainnent Fan Quiers 2 125/81 828.4 3 Sec. 134 % 96 12 Elec. B uip.
l Roan Supply 1 100 584.12 3 Sec. 95 95 95 13 Cangaunt Coolirg Water 1 450 2491.2 6 Sec. 351 3 51 351 14 Shield Buildtrg Exluust 1 60 340.6 6 Sec. -
40.2 40.2 15 Sdeld Buildirg Ibaters Iot - -
6 Sec. -
31.5 31.5
-ea 9 6 Page 12 of 14 ST. LUCIE UNIT 2 EMERGENCY OPERATING PROCEDURE 2-0030140, REVISION 4 BLACKOUT OPERATION TABLE 1 DIESEL GENERATOR LOADING SEQUENCE lufNINP,Il%D (100 Ihr Noninal llI:A Diesel Inal or Shutdown (Recirculation) Hain Steau Line Autantic Startirs &nerator Runeplate Startirg Tiinirg With loss of Off- With loss of Off- Break With loss of 111M Equipnert (4) Qnntity IIP KVA Sequence Site Ibwer (IDOP) Site Ibwer (imp) Offsite Ibwer (IlYP) 16 Intake Goliig Water hsap 1 600 3709.0 9 Sec. 453 453 453 17 mntairunent Spray Ranp 1 500 2892.6 12 Sec. - 405 405 18 Ilydra2.!ne Raup 1 3 21.5 12 Sec. -
1 1 19 kactor Supports moling 1 40 2 % .76 18 Sec. 22 - -
20 kactor Cavity Supply Fan 1 20 124.15 18 Sec. 15 - -
21 Intake kildirg Golirg Fan 1 7.5 44.0 21 Sec. 7.5 7.13 7.5 22 Battery Iban Ibof Ventilator 2-RV-1 1 0.75 8.5 21 Sec. .75 .75 .75 23 Elec. Equip. Iban Edaist 2-RV-3 1 5 34.22 21 Sec. 5 5 5 24 EES Area Exhaust Fan 1 60 358 24 Sec. 45 45 45 25 Om trol Roon Ener. Filter Fan 1 10 62.0 24 Sec. -
10 10 26 Cbntrol Pma Air mnlitionirg 2 55 -
24 Sm. 68 68 68 27 Boric Acid that Trace Iot Int -
27 Sec. 30 30 30 28 Battery Clurp r 1 60ni -
27 Sec. 60 60 60 29 Amciliary Fealwater lunp 1 350 1951.4 30 Sec. 255 255 255 30 RMI Supply Fan 1 150 900.1 33 Sec. 111 111 til
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- ST. LUCIE UNIT 2 EMERCENCY OPERATING PROCEDURE 2-0030140, REVISION 4 BLACKOUT OPERATION TABLE 1 DIESEL CENERATOR LOADING SEQUENCE RUPNLPC IIMD (100 _j tw tbninal ifrA Diesel loal or 9mitdown (Recirmlation) Main Stama Line Automatic Startirg Gmerator Naneplate Startirg Timirg With loss of Off- With loss of Off- Break With loss of 111N Fepdpnent (4) Qantity IF KVA Seri m nce Site Iber (IDOP) Site hr (IDOP) Offsite Ibwer (IDOP) 31 Elec. F21uip. Iban Exhaust 2-INE-Il 1 150 900.1 33 Sec. 38 38 38 32 Charging lisaps 2 125 1656.8 5 Min. 60 60 60 33 lbric Acid Mikasp lisnp (2) 2 25 124.1 5 Min. 24 24 24
% Instnnent Air Cbutressir 1 60 340.6 Mnni loal 60 60 60 35 Fuel Ibol Onling lisap 1 40 234.6 Mnni loal 26 -
26 36 Ilydrq;en Reconbiner 1 75KW - Mnni loal -
75 75 37 Pressurizer linters 1 2001GJ - Manual loal 200 - -
after 2 lxxrs IDOP tUES:
(1) Actmtal on RAS (2) Both Boric Acid Mdeup Iisaps are loakxl onto Diesel Generator A
. .s Paga 14 of 14 ST. LUCIE UNIT 2 EMERGENCY OPERATING PROCEDURE NO. 2-0030140, REVISION 4 BLACKOUT OPERATION
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7.0 REFERENCES
7.1 St. Lucie Unit 2 FSAR, Sections 8 and 15 7.2 Of f-Normal OP 2-0030130, " Shutdown Resulting From Reactor / Turbine Trip" g 7.3 OP 2-0210020. " Charging and Letdown" -
7.4 OP 2-0330020, " Turbine Cooling Water Operation" 7.5 Of f-Normal OP 2-0250031, " Boron Concentration Control, Of f-Normal" 7.6 Off-Normal OP 2-1010040, " Loss of Instrument Air" 7.7 OP 2-1540020. " Water Plant Startup and Shutdown" .
7.8 OP 2-2200020, " Emergency Diesels - Standby Lineup" 7.9 OP 2-0700022, " Auxiliary Feedwater System Operation"
'! 8.0 RECORDS / NOTIFICATIONS:
.4 8.1 Normal log entries 8.2 AP 0010134, " Component Cycles and Transients" 9.0 REVIEW AND APPROVAL:
Reviewed by Facility Review Group October 26 1982 Approved by J. H. Barrow ( for) Plant Manager October 26 1982 Revision 4 Reviewed by FRG 9E)l f?/ d.J 19 di3 Approved by O --[f/ b l L 4 & bPlantManager % <. O F 19 C v (/
"LAST PAGE" EP 2-0030140 Revision 4 Total No. of Pages 14 l
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