ML20090G762
| ML20090G762 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 10/06/1983 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17214A515 | List: |
| References | |
| PROC-831006-02, NUDOCS 8310270067 | |
| Download: ML20090G762 (21) | |
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Page 1 of 14 EMERGENCT PROCEDURE 2-0030140 REV 5 E
1 FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNIT 2 EMERGENCY PROCEDURE NUMBER 2-0030140 -
REVISION 5 BLACKOUT OPERATION (R) 3 TOTAL NUMBER OF PACES: 14
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Page 2.of 14-e FLORIDA POWER & LIGRT CNPANT ST. LUCIE UNIT 2 EMERGENCY PROCEDURE NUMBER 2-0030140 REVISION 5 4
1.0 SCOPE
This procedurn 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 STMPTCMS :
2.1 Alsras associated with the loss of operating plant components.
2.2. Loss of normal Control Room lighting and DC lighting energized.
1 2.3 Reactor and Turbine trip.
2.4 Emergency Diesel Generators start.
2.5 Reactor Coolant Pump trip and Main Feedwater Pump trip.
4 3.0 AUTOMATIC ACTIONS:
NOTE: Any Automatic Actions that should occur and do not, must be
- manually initiated.
"4,j AUT WATIC ACTION -r INITIATING EVENT 3.1 Reactor Trip 3.1 RCS Low Ficw 195%
3.2 Turbina Trip 3.2 Reactor trip bus low voltage 1
3.3 Generator lock-out 3.3 Turbine trip /Bkrs closed 3.4 Generator breakers open 3.4 Turbine Trip 3.5 Incoming feeder breakers 3.5 Startipr transformer open to 4160V and 69007 buses breakers fail to close 3.6 Tie breakers between normal 3.6 Undervoltage on 2A2 and 232 41607 buses (2A2 and 2B2) and 4160 buses l the emergency 4160V buses j
(2A3 and 233) open 3.7 - Ties between essential and 3.7 Undervoltage on Emergency non-essential sections of 480V MCCs emergency 480V MCCs open
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- Prge- 3 cf 14-ST. LUCIE UNIT 2 EIGRGENCY PROCEDURE NUMBER 2-0030140, REVISION 5 , g BLACKOUT OPERATION 3.0 IMMEDIATE AtTf0MATIC ACTIONS: (Cont.)
AUT(MATIC 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 stamp 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 lif t 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, 2-231, 2-2A2 and 2-232 (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) i.
l Lighting Panels 213, 209, 215, (45 KVA each) i 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)
NorE: Maximum starting KVA of the D/G = 28,500 KVA Available starting KVA = 28,500 - [(Bus Volt's) K (Bus Amps) K 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 Icad.
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Pcge 4- cf 14-STL LUCIE UNIT 2 EMERGENCT PROCEDURE NUMBER 2-0030140, REVISION 5' BLACKOUT ~ OPERATION 3.0 IMMEDIATE AUTOMATIC ACTION: (Cont.)
AUTCMATIC ACTION INITIATING EVENT 3.9 All loads on emergency buses 3.9 Diesel load shedding sequence are tripped except the folicwing:
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 41607 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).
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3.12 Auxiliary Feedwater atto. start ~
3.12 2A or 2B Steam Generator initiates. . - -- 1 level decreases to 20.6%
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. Page- 5 of 14-ST. LUCIE UNIT 2.
EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 5 BIACKOUT OPERATION 4.0 IMMEDIATE OPERATOR ACTION:
1 ACTION, LOCATIONS .
4.1 Trip Turbine and Reactor 4.1 RIGB-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 breakars ,, , ,7 5 4.8 Reduce Tav$ to reference 4.8 RTGB-203 setpoint by manual operation i of the steam dump valves to atmosphere 4.9 Isolate steam generator 4.9 RTGB-206 blowdown 4.10 Verify 2C steam-driven APW 4.10 RTCB-202 -
pump has started and has /
established flow to the Steam -
Generators. If AFW pumps have started due to the auto start feature, the motor driven pumps may be secured, if desired i
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, EMERGENCY PROCEDURE NUMBER- 2-0030140, REVISION 5 BLACKOUT OPERATION 5.0 SUBSEQUEIR ACTIONS:
CHECK 5.1 Implement the Emergency Plan as necessary in accordance with EPIP 3100021E, " Duties of the Emergene.y 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 dT should be <490 F ( AT for full power).
- 1. If the above conditions are not established:
A. Check RCS temperature and pressure to ensure that the RCS is at least 20'F subcooled.
B. Ensure AFW flow to the Steam Generators has been initiated and the steam dumps to atmosphere are in operation.
C. Refer to EOF 2-0120043, " Inadequate Core Cooling."
- 2. Return at laast one RCP in each loop to operation as soon as off-site power is available and the requirements for pump restart are satisfied in accordance with E0P 2-0120040, Paragraph 5.8. ,,,._;'-g 5.3 Start equipment in Table 1, if required.
5.4 If one Diesel fails 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 l
inspect status of local alarm panel.
- 2. If no alarms are present on the local alarm pa 1, an inspection of the overspeed trip lever should 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 abould be made.
4 Refer to 0F 2-2200020 and OP 2-2200050.
l l 5.5 Locally open condenser vacuum breakers (MV-10-1A and MV-10-1B).
Incally close MSR main steam block valves (MV-08-4, MV-08-6, 1 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 namially.
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P: - 7 ct 14-ST LUCIE' UNIT'2~
EMERGENCY PROCEDURE NUMBER 2-0030140, REVISION 5 BLACKOUT OPERATION 5.0 SUBSEQUENT ACTION: (Cont.)
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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 (3685 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 Cenerator 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.
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Reset lockout relays for each required bus to allow closing of feeder breakers.
5.9 Remove.the following' ..ncomponents from service:
Stema jet air ejectors Priming ejector l Auxiliary priming ejector l Auxiliary steam to RAB Gland seal system 5.10 Etart 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 racing).
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Pcge 8 cf 14 ST. LUCIE UNIT'2' EMERGENCT PROCEDURE NUMBER 2-0030140, REVISION 5 BTACKOUT OPERATION 5.0 SUBSEOUENT ACTIONS: (Cont.)
CHECK 5.12 Manually close breakers for Pressurizer heater buses o OVERRIDE position and reset the Backup heater breakers.
l This should be accomplished within two hours following the losa of off-sice power.
t l CAUTION: Consider equipment starting requirements. Alternate operation of equipment may be required to avoid overloading the Diesel Generators (3685 KW maximum continuous rating).
NorZ: The above actions will only energize B-1 and B-4 banks of Backup heaters.
NOIE: If SIAS has occurred, Pressurizer heaters cannot be
- re-energized as. per Step 5.12 until SIAS has been reset. /RS 5.13 Check that the Bearing 011 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.
s.
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 950 F - 100 F.
5 .17 Isolate cooling water supply to the Generator hydrogen coolers.
l 5.18 If additional condensate Storage Tank water is required, have Unit 1 personnel place the Water Treatment Plant in service.
I 5.19 Place the Spent Fuel Pool Cooling Pump in operatida 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. t 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.
5.21 Sample and analyze the reactor coolant to determine if fuel element clad failure has occurred.
5.22 Determine expected duration of power outage. If unable to do so or if outage is to be prolonged, borate RCS to Cold l _ Shutdown concentration.
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P 9 cf 14 ST. LUCIE UNI'r 2
. EMERGENCT PROCEDURE NUMBER 2-0030140, REVISION 5 &
BLACKOUT OPERATION l l
5.0 SUBSEOUEFf ACTIONS: (Cont.)
, CHECK 5.23 If the outage will exceed four hours and the RWT is available, proceed to Cold Shutdown conditions utilizing natural circulation, atmospheric stesa dump and feedwater addition.
Refer to EOP 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 l (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.
5.25 When normal AC power is available:
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- 1. Restere bus sections to their normal supplies.
- 2. Place the Diesel Generator System in standby lineup as per OP 2-2200020.
- 3. Restore all p . int systems to normal.
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- . Prge 10 cf 14-ST. LUCIE UNI'r 2 EMERGENCY PROCEDURE NUMBER 2-0030140,- REVISION 5 A
r !
BLACK 0tTr OPERATION
6.0 DISCUSSION
6.1 A loss of power to the 41607 buses results in a loss of power to al 4807 Load' Centers and Motor Control Centers and to all instrumentation not fed directly or indirectly from the station batte ry. . 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 deday 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 af ter 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,.
,, .U D 6.6 Core damage is not ex'pect'ed 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 loadi, that are running will be automatically tripped and the required emergency loads will be automatically started.
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'f Page 11 of 34 ST. LUCIE UNIT 2 -
EMERGENCY OPERATING PROCEDIRE 2-0030140, REVISION 5 BLACKOITT OPERATION TABIE 1 DIESEL CENER ATOR LOADING SEQlENCE ElfNIIC 11MD (150 ;
Ihr Nadnal 14CA l Diesel lead or Sutdan (Recirculation) Hain Steam Line 2 Autmatic Startirg &nerator Nameplate Startirg Tiadrg WLth loss of off- With loss of Off- Break With loss of 111M_ Fedinert (4) Gartity IP KVA Sequenm Site Ibuer (IfXP) Site Ibwer (IfYP) Offsite Ibwer (IIXP) 1 High Presstre Safety Ird. Rap 1 400 2422.0 0 Sec. - 324 -
324 2 Hotor Operatal Valves Iot -
3 0 Sec. 6.7 27.2 33.1 1
3 Emergmcy Li@tirg Imt - -
0 Sec. 125 125 125 4 lbuer Panels Iot - ""'- o Sec. 195 195 195 5 Diesel 011 Trarsfer Raps 1 3 21.5 0 Sec. 3 3 3
't 6 RG Oil Lift hups 4 10 66.85 0 Sec. 40 20 20 7 thirterruptible Rner Sipply 1 - -
0 Sec. 55 55 55 8 INAC Dampers Ist - -
0 Sec. 4 4 4 9 INAC Valves Iot - -
0 Sec. 1.5 1.5 1.5 10 low Presare Safety Ird. hap 1 400 2183.3 3 Sec. 274 321 274 11 Grtairment Fan Golers , 2 125/10 828.4 3 Sec. 134 % 96 3 Sec. 95 95 95 12 Elec. Eqtip. Room Supply \l 100 584.12 13 Caponent Gollrg Eter 1 450 2491.2 6 Sec. 351 351 351 14 Shield Butidtrg Exhaust 1 60 340.6 6 Sec. -
40.2 40.2 15 thield Buildtrg thaters la - -
6 Sec. -
31.5 31.5 i
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ST. LUCIE UNIT 2 -
ENERGENCY OPERATING PROCEDIRE 2-0030140, REVISION 5 .
BLACK 0lfr OPERATION TABLE I DIESEL CENFR ATOR LOADING SEQUENCE lamin:InAD (KW) ,
Ihr Haminal IDCA '
Diesel load or - Seitdown (Reciraslation) Hain Steau Line Autantic Startirg &nerator IL=aplate Startirs Tintrg With Ixas of Off- Mth Ims of Off- Bredt Eth loss of I'11H Fedgmert (4) Omrtity IP KVA Sequence Site Ibwer (IfXP) Site Ibwer (IfXP) Offsite Ibwer (IfMF)
- 16 Istake moltrg Water Rap 1 600 3709.0 9 Sec. 453 453 453 17 0xtalmert Sgraf Rap 1 500 y92.6 12 Sec. 405 405 l 18 Ily& azine Rap 1 3 121.5 12 Sec. -
1 1 19 Reactor Sugp>rts Coo 11rg 1 40 "2Ye.76 18 Sec. 22 - -
20 Reactor Cavity Sapply Fan 1 20 124.15 18 Sec. 15 - -
21 Intda Edidtrg Coo 11rg Fan 1 7.5 44.0 21 Sec. 7.5 7.13 7.5 -
22 Battery Boan Roof Niertilator 2-RV-1 1 0.75 8.5 21 Sec. .75 .75 .75 23 Elec. Fgdp. Roan Exhaist 1-RV-3 1 5 34.22 21 Sec. 5 5 5 24 ICCS Area Exhast Fan 1 60 358 24 Sec. 45 45 45
- 25 Qxtrol Roan Buer. Filter Fan 1 10 62.0 24 Sec. -
10 10 l 26 Q>ntrol Roan Air OmKtfonirg , 2 55 -
24 Sec. 68 68 68 27 Boric Acid Ikat Trace "B Sec. 30 30 30 NIot l lot 28 Battery Omrgpr 1 60Gi -
27 Sec. 60 60 60 29 Auxiliary Feahmter Rap 1 350 1951.4 30 Sec. 255 255 255 30 RAB Sipply Fan 1 15 0 900.1 33 Sec. 111 111 111 1
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Page 13 of 14 ST. LUCIE UNIT 2 '
EMERGENCY OPERATING PROCEDURE 2-0030140, REVISION 5 BLACKOlff OPERATION TABLE 1 DIESEL CENERATOR, LOADING SEQUENCE -
t IENHfC I/MD (IG/) ,
Ihr Haminal IICA l Diesel Inalor. Sutdown (Recitadatian) Main Steam Line !
Autantic Startirg Omerator Nameplate Starting Tlatrg Eth Ioss of off- Mth Ima of off- keak Mth loss of 111H Fedpiert (4) Onamity IP KVA Sequence Site Pbwer (IRP) Site 1%er (If1P) Offsite Power (IIEP) 31 Elec. Equip. Hoan Exhast 2-HYE-11 1 13 0 900.1 33 Sec. 38 38 38 32 hrgirg assps 2 125 1656.8 5 Min. 60 60 60 33 Boric Acid Makamp Ramp (2) 2 25 4 24.1 5 Min. 24 24 24 34 Iratnamart Air Ocaqresor 1 60 N.6 Marual loal 60 60 60 35 Fuel Ibol hiing hamp 1 40 234.6 Marmal lost 26 -
26 36 Ilydrqpen Recmhiner 1 73Gi - Marual load -
75 75 37 Pressurizer hters 1 200Gi -
Harmal loal 200 - -
after 2 tours IIXP IUTES:
(1) Adustal on RAS \
(2) Bath ' doric Acid Mdceup haps are Inarled onto Diesel Cenerator A f ,
Peg) 14 cf- 14 ST. LUCIE UNIT 2 EMERGENCT OPERATING PROCEDURE NO 2-0030140, REVISION 5 ,
BLACKOUT OPERATION e .
I
7.0 REFERENCES
7.1 St. Lucia Unit 2 FSAR, Sections 8 and 15 7.2 Off-Normal OP 2-0030130, " Shutdown Resulting From Reactor / Turbine l Trip" 7.3 OP 2-0210020, " Charging and Letdown"
! 7.4 OP 2-0330020, " Turbine Cooling Water Operation"'
7.5 Off-Normal ~OP 2-0250031, " Boron Concentration Control, Off-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, "Emergcucy Diesels - Standby Lineup" 7.9 OP 2-0700022, " Auxiliary Feedwater System Operation" ,
( 8.0 RECORDS / NOTIFICATIONS:
l 8.1 Normal log entries l
l 8.2 AP 0010134, " Component Cycles and Transients" 9.0 REVIEW AND APPROVAL:
Reviesed by Facility Review Group October 26 19 1 Approved by J. H. Barrow (for) Plant Manager October 26 19 1 Revision 5 Reviewed by FRG Y"[ 19M Approved by MM /l/ M _ Plsnt Manager 7-44'-19M C
l l "LAST PAGE"
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EP 2-0030140 l Revision 5 Total No. of Pages 14 9
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D'Occ'en RE7IsIcy . ISTRnun0N SagET . UNIT II
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DOCCEC SENT TO:
I COPY TRANSMITTAL COPY TRANSMITIAL NO. DOCCENT ECLDER 3RTURNED NO. DOCCENT HOLDER RETURNED
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MASTER UNCONTROLLED COPIES
, 1 D. A. Sager 2
3 NRC-Region II 4 Atta: EPPS Branch Chdaf 5 N. G. Roos H. Paduano - GO .
6 ISC
. A. W. Bailey 7
8 9
10 Control Room II 73.
G. Regal Dettownf-11 12 Ugelow, A. - Backfic ECI
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15 Training J. Spodick {
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T. Vogan - GO .l G. J. Boissy l R. R. Jennings E. M. Mercer
! R. J. Frechette Resident NRC N: HQ Atta: , Chief, Nuclea r Response
(, A Branch
.. C. Burns . - ia. .
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PROCESSED BY: w DATE 4 *
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FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNIT NO. 2 0FF-NORMAL OPERATING PROCEDURE NUMBER 2-0970031 -
REVISION O
- 2. PREPARED BY: P. B. ISAACS AUGUST 9,1981
- 3. SUBCOMMITTE REVIEW BY: (including content list) -
G. Imbriala for FPL PNE AUGUST 9,1982 4 REVIEWED BY FACILITY REVIEW GROUP: /0/[ 19[/J
- 5. APPROVED BY' hM h MANAGER /3 [F 19_N
(/ ' ^ (~ "
- 6. REVISION REVIEWED BY F R G 19 _
" ~ ~
- 7. APPROVED BY PLANT MANAGER' 19 _
1 i
FOR INFORMATION ONLY-TMs document is not controlled. Before use, verify informaffen with a centround oocument.
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FLORIDA POWER & LICHT COMPANY ST. LUCIE UNIT NO. 2 ,
OFF-NORMAL OPERATING PROCEDURE NUMBER 2-0970031 ' '
1 REVISION O ,
l FOR INFORMATION OILY :
1.0 Title
5 d cuent is not controlled. Before use, ;
vily Informetion with a controlled document. "
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Loss of SUPS - Non-Safety Vital AC or Fire and Security inveu.eu 2.0 Review and Approval:
Reviewed by Facility Review Croup /08 1993 Approved by O. h v
h k ant Manager / t[I19 Revision _ Reviewed by F R G 19 _
Approved by Plant Manager 19 _ -
3.0 Purpose and Discussion:
3.1 Purpose
This procedure provides instructions and guidance for restoration of power to the SUPS Vital AC and the Fire and Security Inverters.
3.2 Discussion
3.2.1 The SUPS Vital AC main feed is from MCC 2AB and a bypass source is from MCC 2AB. The DC source comes from 125 V DC bus 2AB.
3.2.2 The Fire and Security Inverters main feed is from MCC 2AB and a bypass source is from MCC 2C. The DC source comes from 125 V DC bus 2C.
4.0 Symptoms
4.1 Loss of SUPS Vital AC or Fire and Security Inverter.
4.1.1 SUPS Inverter Trouble annunciator (B-33) on RTGB-201.
4.1.2 Failure of Feedwater Regulating Systems for SUPS.
4.1.3 Failure of Turbine Getierator Control System for SUPS.
4.1.4 For Fire and Security Inverter, loss of Fire Detection and access to vital areas.
4.1.5 Failure of Heater level control on loss of SUPS.
4.1.6 Loss of RM-11 indications or loss of Fire and Security Inverter.
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ST. LUCIE UNIT NO 1 ,
0FF-NORMAL. OPERATING PROCEDURE NUMBER 2-0970031, REVISION O j r ,
F LOSS OF SUPS - NON-SAFETY' VITAL AC OR FIRE AND SECURITY INVERTER a
5.0 Instructions
5.1 Immediate Automatic Actions:
5.1.1 SUPS and Fire and Security inverters shift to alternate source.
, 5.2 'Immediate Operator Actions:
5.2.1 If a reactor trip occurs, carry out Off-Normal OP 2-0030130,
" Reactor Trip / Turbine Trip".
5.3 Subsequent Operator Action:
5.3.1 Check Reflash Module RA-RAB-4 to determine which SUPS is in alarm and cause (Northwest wall of Cable Spreading Room). If unable to gain entry, skip to Step 5.3.7.
NOTE Steps 5.3.2.- 5.3.6 are for the Vital AC SUPS.
Steps 5.3.7 - 5.3.12 are for the Fire and Security Inverter.
1 5.3.2 Restore power to the. bus by placing the Manual Bypass switch in the ALTERNATE To-LOAD position. Insure breaker CB-4 is closed
- and breakers to 2A, 2B, and 2A1/2B1 are closed.
5.3.3 Check with Control Room to ensure power has been restored.
I j 5.3.4 If power is not restored, check that alternate source breaker 2-
,. 42434 on the MCC 2AB is closed.
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5.3.5 Notify Electrical Department to investigate cause and . repair.
5.3.6 Restore inverter to service per OP 2-0970021, "120 Volt Vital AC
- System Operation (Non Class IE)".
- i
[- 5.3.7 If unable to gain entry to the Cable Spreading Room, have
! Security man the Control Room access and Cable Spreading Room access. (This would indicate the Fire and Security Inverter is
. out of service).
) 5.3.8 Restore power to the bus by placing the Manual Bypass switch in the ALTERNATT TO LOAD position, and check CB-4 and CB-6 closed.
5.3.9 Check with Control Room to ensure power is restored.
l 5.3.10 If power is not restored, check the alternate source breaker 2-42508 on the MCC 2C is closed.
5.3.11 Notify Electrical Department to i m atigate the cause and repair.
5.3.12 Restore the inverter to service per OP 2-(LATER).
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, , ST. LUCIE UNIT NO. 1 .
OFF-NORMAL OPERATING PROCEDURE NUMBER 2-0970031, REVISION 0 f
LdSS0F' SUPS - NON-SAFETY'VITAI.'iC'OR' FIRE AND SECURITY INVERTER -
5'
5.0 Instructions
(continued)
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5.3 Subisequent ' Operator ActEon: (continued) i m--==
NOTE ,
If this bus is left out of service for an extended
period of time ( >' 15 minutes), fire watches .,
will be required And local sampling by the Chemistry Department will be required.
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OFF-NORMAL OPERATING PROCEDURE NUMBER 2.-0970031, REVISION'0 i LOSS OF SUPS -
NON-SAFETY VITAL AC OR FIRE AND SECURITY INVERTER 6.0
References:
6.1 St. Lucie Unit 2 FSAR, Section 8.
4 6.2 Ebasco P & ID 2998-G-332, 480V Miscellaneous, 125 V DC and Vital AC one lind diagram.
6.3 AP-0930020, "St. Lucie Unit 2 Power Distritubion List".
7.0 RecordsRehired
7.1 Normal Log entries.
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