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105 Cards in this Set
- Front
- Back
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WHICH 345 KV BUSES POWER THE RATs? |
BUS 4 - T12
BUS 9 - T22 |
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WHAT SIGNALS WILL TRIP A RAT? |
SUDDEN PRESSURE DIFFERENTIAL OVERCURRENT HIGH SIDE OVERCURRENT (TIMES + INSTANT) X WINDING OVERCURRENT Y WINDING OVERCURRENT BUS 4(9) FAULT |
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WHAT OCCURS ON AN UNDERVOLTAGE ON THE RAT? |
UNDERVOLTAGE ON THE X OR Y WINDINGS WILL TRIP THE RESERVE FEED BREAKER TO: BUS 11/12 (Y) OR BUS 13/14 (X) |
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WHAT ARE THE RESERVE AND MAIN FEEDS TO BUSES 11,12,13,14? |
MAIN FEED - COMES FROM UAT
RESERVE FEED - COMES FROM RAT |
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WHICH BUSES ARE NORMALLY FED BY THE UAT AND RAT? |
UAT (T-11): BUSES 11 AND 14
RAT (T-12): BUSES 12 AND 13 |
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WHAT OCCURS WHEN THE 86 DEVICE FOR THE RAT IS ACTUATED? |
GCB'S FOR BUS 4 (9) OPEN LBB ACTIVATES T-81 (82) TRIPS RESERVE FEEDS TO 11,12,13,14 TRIP BUSES TRANSFER TO MAIN FEEDS (FROM UAT) CONTROL ROOM ALARM
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WHAT SIGNALS CAUSE A TRANSFORMER DELUGE? |
DIFFERENTIAL OVERCURRENT SUDDEN PRESSURE PROTECTOWIRE MANUAL |
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WHAT ARE THE AUTO SETPOINTS AND POWER SUPPLY FOR COOLING T-11? |
60C - 1ST BANK STARTS 70C - 2ND BANK STARTS
MCC 15-2 |
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WHAT ARE THE AUTOMATIC SETPOINTS AND POWER SUPPLIES FOR COOLING THE RATs? |
90C - FIRST BANK STARTS 95C - SECOND BANK STARTS
SWITCH DETERMINES WHICH BANK IS 1ST/2ND
25-2 (15-2) OPPOSITE UNIT IS PRIMARY FEED WITH AUTO SWAP TO OWN UNIT |
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WHAT ARE THE AUTO SETPOINTS AND POWER SUPPLY FOR COOLING T-21? |
60C - 1ST BANK STARTS 65C - 2ND BANK STARTS
MCC 25-2 |
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WHICH BUSES ARE FED BY THE X AND Y WINDINGS ON THE UATs AND RATs? |
X WINDINGS - MAIN AND RESERVE FEEDS TO BUSES 13/14 (23/24)
Y WINDINGS - MAIN AND RESERVE FEEDS TO BUSES 11/12 (21/22) |
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WHICH LOADS ARE FED BY THE POTENTIAL TRANSFORMERS ON A 4KV BUS? |
'BUS LIVE' LIGHT ON -8 PANEL METERING UNDERVOLTAGE RELAYS |
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HOW ARE 480V BUSES PROTECTED FROM OVERCURRENT? |
OVERCURRENT SENSED ON THE BUS WILL TRIP THE HIGH SIDE FEED BREAKER
IF THIS FAILS, THE LOW SIDE FEED BREAKER WILL SENSE THE OVERCURRENT AND TRIP |
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WHAT BUS NORMALLY POWERS 18/19-5? |
BUS 19 |
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WHAT CONDITIONS CAUSE AN AUTOMATIC TRANSFER OF 18/19-5? |
CASE 1: BUS 19 DEAD AND NOT BEING FED BY EDG. UNDERVOLTAGE FOR 17 SECONDS CAUSES TRANSFER
CASE 2: AFTER UNIT EDG LOADS BUS 19, AN OVERCURRENT/UNDERVOLTAGE OR FREQUENCY FAULT CAUSES SWAPOVER |
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HOW ARE 480V MCC'S PROTECTED FROM UNDERVOLTAGE? |
ONLY 18/19-5 HAS AUTOTRANSFER
ALL OTHER MCC'S PROTECTED BY INDIVIDUAL LOADS/BREAKERS WHICH TRIP AT 70% NORMAL VOLTAGE |
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WHAT IS THE DIFFERENCE BETWEEN A 480V BUS AND A 480V MCC? |
MCC'S DO NOT HAVE PROTECTIVE RELAYING FOR THE MCC. (RELIES ON INDIVUDAL LOAD BREAKERS)
BUSES HAVE PROTECTIVE RELAYS ON THE FEED BREAKER FOR OVERCURRENT. UNDERVOLTAGE TRIPS 4KV FEED AND MAY CAUSE LOAD SHEDDING FOR BUS |
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WHEN DO THE BREAKER CLOSING SPRINGS CHARGE FOR A 4KV AND A 480V BREAKER? |
4KV - ANY TIME THE CLOSING SPRINGS ARE DISCHARGED, THEY RECHARGE
480V - ANY TIME THE SPRINGS ARE DISCHARGED AND THE BREAKER IS OPEN |
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WHICH STABS ON A 4KV BREAKER ARE FOR THE FIELD AND BUS CONNECTIONS? |
VERTICAL - FRONT BUS, BACK IS FIELD
HORIZONTAL - TOP IS BUS, FIELD/FLOOR |
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WHAT IS THE DESIGN BASIS FOR THE ELECTRICAL DISTRIBUTION SYSTEM? |
DIVERSITY OF DEPENDABLE POWER SOURCES PHYSICALLY SEPARATED SO SINGLE FAILURE DOES NOT PROPOGATE
AUX POWER TO ESSENTIAL BUSES FROM EDG'S
ONE EDG CAPABLE OF SAFE SHUTDOWN |
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WHY DO THE RATs HAVE UNDERVOLTAGE PROTECTION? |
TO PREVENT POWERING THE 345 YARD THROUGH THE RAT |
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WHAT IS THE PURPOSE OF THE MANUAL UNDERVOLTAGE RESET FROM BUSES 12 AND 14 (22 AND 24)? |
FORCES THE HIGH SIDE TO BE ENERGIZED PRIOR TO CLOSING THE RESERVE FEED BREAKERS FROM THE RAT |
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WHAT IS THE ONLY TRANSFORMER WITH OIL PUMPS TO AID COOLING? |
T-21 (UNIT 2 UAT) |
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WHAT COOLS THE SUBSTATION (4KV/480V) TRANSFORMERS? |
NATURAL CONVECTION
OIL FILLED / AIR RADIATORS |
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HOW IS A 480V BUS ENERGIZED FROM THE CONTROL ROOM? |
SINGLE SWITCH ON THE -8 PANEL
CLOSES HIGH SIDE (FEED FROM 4KV TO TRANSFORMER) THEN CLOSES LOW SIDE (FEED FROM TRANSFORMER TO 480V BUS |
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WHAT TRIPS ON OVERCURRENT AT A 480V BUS? |
HIGH AND LOW SIDE BREAKERS ON THE FEED TRANSFORMER FROM 4KV |
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WHAT PROVIDES OVERPRESSURE PROTECTION ON A 480V/4KV TRANSFORMER? |
MECHANICAL DEVICE (PUSH PIN UP, PUSH TO RESET) |
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WHAT TRIPS ON OVERCURRENT AT A 4KV BUS? |
TRIPS THE CLOSED SUPPLY BREAKER
LOCKS OUT ALL FEEDS VIA 86 DEVICE |
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WHAT TRIPS ON AN UNDERVOLTAGE FOR A NON-ESS 4KV BUS? |
OPENS ALL LOAD BREAKERS
DOES NOT TRIP FEED BREAKERS TO BUS |
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WHAT TRIPS ON AN UNDERVOLTAGE FOR AN ESSENTIAL 4KV BUS? |
OPENS NORMAL FEED BREAKER TO BUS TRIPS SPECIFIC LOADS (NON-SAFETY) TRIPS CROSS-TIE AUTOSTARTS EDG
MUST HAVE LOCA SIGNAL FOR 7 SECONDS OR 5 MINUTE TIMER RUNOUT |
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WHAT IS THE DIFFERENCE BETWEEN 1ST AND 2ND LEVEL UNDERVOLTAGE? |
1ST LEVEL UNDERVOLTAGE @ 70%
2ND LEVEL UNDERVOLTAGE @ 93% (ONLY FOR ESS 4KV BUSES) |
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WHAT ARE THE ESSENTIAL 480V BUSES?
WHAT IS SPECIAL REGARDING UNDERVOLTAGE? |
BUSES 18,19 (28,29)
THE FEED BREAKERS DO NOT TRIP ON UNDERVOLTAGE AT THE ESS 4KV BUSES (FEED FROM DASH BUSES) |
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WHAT IS DEGRADED VOLTAGE? |
SECOND LEVEL UNDERVOLTAGE 93% OF NORMAL VOLTAGE
ONLY ON BUSES 13-1(23-1) AND 14-1(24-1) |
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WHAT ARE CURRENT TRANSFORMERS USED FOR? |
OVERCURRENT PROTECTION
METERING |
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WHEN WOULD THE CREW NOT SEE AN ALARM FOR AN OVERCURRENT TRIP OF BUSES 13-1 (23-1) OR 14-1(24-1)? |
WOULD ONLY BE SEEN IF BEING FED BY NORMAL POWER SUPPLY
OPPOSITE UNIT MAY HAVE THE OVERCURRENT TRIP ALARM, OR AN EDG TRIP/ALARM? |
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WHAT IS THE EFFECT OF LOSING 125 VDC CONTROL POWER TO A 480V OR 4KV BUS? |
ALL BREAKER POSITIONS REMAIN AS-IS
LOSS OF BUS PROTECTION (STILL HAVE OVERCURRENT PROTECTION)
LOSS OF BREAKER CONTROL |
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WHAT WILL TRIP THE MAIN GENERATOR 86 DEVICE? |
UAT DIFFERENTIAL OVERCURRENT UAT SUDDEN PRESSURE RELAY UAT OVERCURRENT UAT NEUTRAL OVERCURRENT
ANY MAIN GENERATOR TRIP |
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WHAT IS TRIPPED BY THE MAIN GENERATOR 86 DEVICE? |
MAIN FEED BREAKERS (FROM UAT) GENERATOR OUTPUT CIRCUIT BREAKERS INITIATES LOCAL BREAKER BACKUP MAIN GENERATOR FIELD BREAKER EXCITER FIELD BREAKERS STATOR COOLING PUMPS |
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WHAT ARE THE OUTPUT CIRCUIT BREAKERS AND YARD BUSES FOR THE MAIN GENERATORS? |
BUS 7 (GCB 6-7 AND 7-8) - UNIT 1
BUS 11 (GCB 10-11 AND 1-11) |
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WHAT IS THE AUTO TRANSFER INTERLOCKING RELAY (ATIR)? |
CLOSING PERMISSIVE FOR NON-ESS 4KV BUSES
MUST BE ENERGIZED TO CLOSE ANY MAIN FEED (FROM UAT)
ONLY ENERGIZED IF MAIN DISCONNECT CLOSED AND A GENERATOR OCB IS CLOSED |
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WHAT CAUSES FAST BUS TRANSFER? |
IF THE CLOSED MAIN/RESERVE FEED BREAKER OPENS (EXCEPT WITH SWITCH) THE OPEN RESERVE/MAIN CLOSES IF: ONE SWITCH IN NORMAL AFTER CLOSE, OTHER IN NORMAL AFTER TRIP ATIR RELAY IS ENERGIZED (MAIN) UNDERVOLTAGE BLOCK RELAY NOT ACTUATED (RESERVE) NO OVERCURRENT CONDITION |
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WHICH BREAKERS CONTAIN THERMAL OVERLOAD DEVICES? |
480V MCC LOAD BREAKERS |
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HOW CAN AN APPENDIX R BREAKER BE OPERATED IF CONTROL POWER IS LOST? |
MANUAL PUSHBUTTON IF CHARGED
LOCAL CONTROL BOX IF DC AVAILABLE
IF NO DC, USE WRENCH TO CHARGE SPRINGS |
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WHAT MUST BE DONE BEFORE USING THE LOCAL CONTROL BOX ON AN APPENDIX R BREAKER? |
REMOVE TRIP/CLOSE FUSES OPEN ALL DISCONNECT SWITCH FOR REMOTE OPERATION REPLACE TRIP/CONTROL FUSES |
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IF BUSES 23-1 AND 13-1 ARE CROSSTIED, AND BUS 23-1 EXPERIENCES UNDERVOLTAGE, WHICH BREAKER TRIPS? |
BUS 23-1 BREAKER TO BUS 13-1 |
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WHAT INTERLOCK PREVENTS THE 1/2 EDG FROM BEING OVERLOADED WITH BUSES CROSSTIED? |
BUS 13-1 TO 23-1 (ON U1 SIDE) WILL TRIP
PROTECTIVE INTERLOCKS FEED TO UNIT 1 SIDE |
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WHAT INTERLOCK PREVENTS PARALLELING THE U1 AND U2 EDG'S? |
IF 14-1 AND 24-1 ARE CROSSTIED AND BOTH UNIT EDG'S LOAD TO THEIR BUSES, THE 14-1 TO 24-1 CROSSTIE BREAKER OPENS |
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WHICH 480V BUSES CAN BE CROSSTIED? |
15-16 (25-26) 15-17 (25-27) 18-19 (28-29) |
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WHAT ARE THE INTERLOCKS FOR THE CROSSTIES TO BUS 15? (NON-ESS CROSSTIE INTERLOCKS) |
1) OTHER CROSSTIE BREAKER CANNOT BE CLOSED IN ORDER TO CLOSE IN THE CROSSTIE BREAKER FROM 16 OR 17 TO BUS 15 (CAN'T DOUBLE CROSSTIE)
2) NORMAL 480V FEED BREAKER (LOW SIDE OF 480V TRANSFORMER) TO ONE OF THE BUSES BEING CROSSTIED MUST BE OPEN (CANNOT CROSSTIE IF THEY BOTH ARE BEING NORMALLY FED) |
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WHAT INTERLOCK ASSURES A DEAD BUS TRANSFER WHEN RESTORING BUS 15/16/17 NORMAL FEED? |
CROSSTIE BREAKER MUST BE OPENED BEFORE THE NORMAL FEED BREAKER (ON HIGH SIDE OF 480V TRANSFORMER) IS CLOSED (FORCED DEAD BUS TRANSFER) |
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WHAT ARE THE CROSSTIE BREAKERS FOR THE ESS BUS CROSSTIE LABELED? |
1819 (ON BUS 18) 1918 (ON BUS 19) |
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WHAT CROSSTIE INTERLOCKS PROTECT BUSES 18 AND 19? |
ONE NORMAL FEED MUST BE OPEN TO CLOSE 1819 AND 1918
IF BOTH 480V FEED BREAKERS CLOSE, 1819 TRIPS, WHICH TRIPS 1918 IF BOTH 4KV BREAKERS CLOSE, 1918 TRIPS ALONE
IF 18-19 CROSSTIED, OPEN NORMAL FEED BREAKER CANNOT BE CLOSED (ENSURES DEAD BUS TRANSFER) |
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WHAT AUTOMATIC ACTION OCCURS WHEN BREAKER 1819 OPENS/TRIPS? |
1918 IS CROSSTIED TO OPEN WHEN 1819 OPENS (TRIP OR SWITCH)
DOES NOT WORK IN REVERSE |
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WHAT ARE THE PERMISSIVES FOR AN EDG TO CONNECT TO AN ESS BUS? |
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HOW DOES A LOCA SIGNAL IMPACT THE 1/2 EDG? |
WILL NOT AUTOCLOSE INTO A UNIT WHEN OPPOSITE UNIT HAS LOCA SIGNAL |
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WHAT IS MEANT BY TWO OFFSITE LINES MUST BE OPERABLE PER LCO 3.8.1.A? |
2 OFFSITE SOURCES:
1) RAT (T-12) AVAILABLE TO 13-1 AND 14-1
2) OTHER UNIT RAT OR BACKFED UAT AVAILABLE TO 13-1 OR 14-1 |
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HOW MANY EDG'S ARE REQUIRED TO BE OPERABLE PER TECH SPECS (LCO 3.8.1.B)? |
TWO EDG'S
UNIT PLUS 1/2 DIESEL |
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WHAT CROSS-UNIT REQUIREMENTS MEET THE INTENT OF HAVING THE OPPOSITE UNIT A/C SUPPORT SBGT, CREV, AND CREV EMERGENCY A/C (LCO 3.8.1.C)? |
UNIT 1: T-21 OR T-22 AVAILABLE TO POWER A SBGT ON BUS 29
UNIT 2: T-11 OR T-12 AVAILABLE TO POWER B SBGT ON BUS 19 T-11 OR T-12 AVAILABLE TO POWER CREV AND CREV A/C ON BUS 18 |
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WHAT CROSS-UNIT REQUIREMENTS MEET THE INTENT OF HAVING THE OPPOSITE UNIT EDG SUPPORT SBGT, CREV, AND CREV EMERGENCY A/C (LCO 3.8.1.D)? |
UNIT 1: EDG-2 AVAILABLE TO POWER A SBGT ON BUS 29
UNIT 2: EDG-1 AVAILABLE TO POWER B SBGT ON BUS 19 AND CREV AND CREV A/C ON BUS 18 |
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WHEN IS THE LCO FOR AC SOURCES WHILE OPERATING APPLICABLE? |
MODES 1,2,3 |
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WHEN MUST LCO 3.0.3 BE ENTERED FOR AC POWER DISTRIBUTION? |
IMMEDIATELY IF THREE OFFSITE SOURCES ARE UNAVAILABLE |
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WHEN DOES THE BREAKER ALIGNMENT AND POWER CIRCUIT AVAILABILITY CHECK HAVE TO BE PERFORMED PER TECH SPECS? |
WITHIN 1 HOUR AFTER AN EDG OR AN OFFSITE SOURCE SECLARED INOPERABLE |
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PER TECH SPECS, WHAT ARE THE ESSENTIAL AC SOURCES? |
DIV 1: 13, 13-1, 18, ESS, INST BUS
DIV 2: 14, 14-1, 19 |
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HOW MANY OFFSITE CIRCUITS ARE REQUIRED DURING UNIT OPERATION?
DURING SHUTDOWN? |
OPERATION - 2
SHUTDOWN - 1 |
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HOW MANY EDG'S ARE REQUIRED DURING UNIT OPERATION?
DURING SHUTDOWN? |
OPERATION - 2
SHUTDOWN - 1 |
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WHAT ARE THE REQUIRED ACTIONS WHEN NO OFFSITE AC SOURCES ARE AVAILABLE DURING SHUTDOWN? |
IMMEDIATELY: 1) IMMEDIATELY DECLARE AFFECTED SYSTEMS INOP 2) SUSPEND CORE ALTERATIONS 3) SUSPEND MOVEMENT OF RECENTLY IRRADIATED FUEL 4) SUSPEND OPDRV'S 5) TAKE ACTION TO RESTORE A SOURCE |
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WHAT ARE THE REQUIRED ACTIONS WHEN NO EDG'S ARE AVAILABLE DURING SHUTDOWN? |
IMMEDIATELY: 1) SUSPEND CORE ALTERATIONS 2) SUSPEND MOVEMENT OF RECENTLY IRRADIATED FUEL 3) SUSPEND OPDRV'S 4) TAKE ACTION TO RESTORE A SOURCE |
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IF MULTIPLE ELECTRICAL DISTRIBUTION SUBSYSTEMS FAIL AND A SAFETY FUNCTION IS LOST WHILE ONLINE, WHAT IS THE REQUIRED ACTION? |
IMMEDIATELY ENTER LCO 3.0.3 |
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IF AN ELECTRICAL SUBSYSTEM FAILS DURING AN OUTAGE, WHAT ARE THE REQUIRED ACTIONS? |
IMMEDIATELY DECLARE SUPPORTED FEATURES INOP OR IMMEDIATELY: 1) IMMEDIATELY DECLARE AFFECTED SDC SUBSYSTEM INOP 2) SUSPEND CORE ALTERATIONS 3) SUSPEND MOVEMENT OF RECENTLY IRRADIATED FUEL 4) SUSPEND OPDRV'S 5) TAKE ACTION TO RESTORE A SOURCE |
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WHAT IS THE AUTOMATIC RESPONSE TO A LOSS OF T-12? |
BUSES 12 AND 13 SWAP TO T-11 (UAT)
NO LOADS SHOULD BE LOST |
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WHAT INTERLOCKS PREVENT AN OPERATOR FROM RACKING OUT A CLOSED 4KV BREAKER? |
HORIZONTAL: SOCKET ACCESS COVER DOOR WILL NOT OPEN WHEN CIRCUIT BREAKER IS CLOSED
VERTICAL: ELECTRICAL LIMIT SWITCH PREVENTS RACKING MOTOR FROM ENERGIZING WHEN CIRCUIT BREAKER IS CLOSED |
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WHAT INDICATIONS APPEAR ON A 480V MCC THAT HAS TRIPPED ON THERMALS?
OVERCURRENT? |
THERMALS: BREAKER STILL SHUT AT MCC
OVERCURRENT: BREAKER LOCALLY IN TRIP |
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WHAT PREVENTS BREAKER POSITION FROM BEING INDICATED IN THE CONTROL ROOM? |
BREAKER SWITCH IN P-T-L
TRIP FUSES NOT INSTALLED |
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HOW IS A SOLENOID OPERATED 480V CIRCUIT BREAKER CLOSED LOCALLY? |
INSERT MAINTENANCE HANDLE INTO GROOVES ON BREAKER FRAME AND LIFT SOLENOID SLUG UP AND INTO POSITION |
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HOW IS A MOTOR OPERATED 480V CIRCUIT BREAKER CLOSED LOCALLY? |
ATTACH RATCHET TO CLOSING SPRING MOTOR UNTIL SPRINGS CHARGE AND BREAKER CLOSES |
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HOW ARE THE MAIN POWER TRANSFORMERS COOLED? |
FORCED OIL / FORCED AIR
1ST FAN BANK ON WHEN MAN GENERATOR FIELD BREAKER CLOSED. 2ND BANK CYCLES ON TEMPERATURE (75C) |
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WHAT POWERS MAIN POWER TRANSFORMER COOLING? |
BUS 16 (26
ABT BACKUP TO BUS 15 (25) |
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WHAT INITIATES DELUGE FOR MAIN POWER TRANSFORMERS? |
SUDDEN OVERPRESSURE
DIFFERENTIAL OVERCURRENT
PROTECTOWIRE
MANUAL |
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IF THE SA-2 FAN COOLER SWITCH ON AN MPT IS SELECTED ON ON, WHAT OCCURS?
OFF? |
ON - BOTH FAN GROUPS RUN
OFF (NORMAL) - ONE GROUP ON, 2ND GROUP CYCLES |
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WHEN CAN OUTPUT GCB'S BE OPENED FROM 912-2? |
ANY TIME |
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WHEN CAN OUTPUT GCB'S BE OPENED FROM THE -8 PANEL? |
GENERATOR TRIP PUSHBUTTON
IF REVERSE POWER CONDITION EXISTS |
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WHEN CAN OUTPUT GCB'S BE CLOSED FROM 912-2? |
IF THE MAIN DISCONNECTS ARE OPEN |
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WHEN CAN OUTPUT GCB'S BE CLOSED FROM THE -8 PANEL? |
IF GENERATOR FIELD BREAKER CLOSED AND DISCONNECT CLOSED
(FIELD BREAKER RELAY BYPASSED FOR BACKFEED) |
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WHAT IS REQUIRED TO TRANSFER POWER FROM THE RAT TO THE UAT? |
ATIR RELAY MUST BE ENERGIED
RELAY IS ENERGIZED IF THE MAIN DISCONNECT IS CLOSED AND AN OUTPUT GCB IS CLOSED
TRUE FOR MANUAL AND AUTO-TRANSFERS |
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WHEN ARE THE MAIN GENERATOR STARTUP PROTECTIVE RELAYS BYPASSED? |
WHEN DISCONNECT IS CLOSED AND ONE OUTPUT GCB CLOSED |
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HOW DO WE PREVENT CONNECTING A MAIN TRANSFORMER TO BOTH GROUND AT THE RING BUS? |
MECHANICAL INTERLOCK |
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WHAT IS THE MOTIVE FORCE FOR OPENING CLOSING GCB 3-4? |
AIR TO OPEN
SPRING TO CLOSE |
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WHAT WILL TRIP OPEN GCB 3-4? |
POLE DISAGREEMENT
11 PSID SF6 PRESSURE BETWEEN PHASES
198 PSIG AIR PRESSURE |
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WHAT WILL OPEN THE GCB 3-4 DISCONNECTS? |
IF 3-4 IS OPEN, MOD'S WILL OPEN IF:
206 PSIG AIR PRESSURE
6 PSID SF6 PRESSURE BETWEEN PHASES |
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WHAT IS THE MOTIVE FORCE FOR THE OTHER GCB'S? (NOT 3-4) |
HYDRAULICALLY OPEN/CLOSE |
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WHAT WILL TRIP ANY GCB OPEN? |
POLE DISAGREEMENT
BUS FAULT
LBB FROM NEIGHBORING BREAKER |
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WHAT IS THE NORMAL PRESSURE RANGE FOR A NON 3-4 GCB? |
4540 PSIG - 4900 PSIG
(PUMP TRIPS AT 4750) |
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WHAT OCCURS AS GCB HYDRAULIC PRESSURE DROPS FROM NORMAL RANGE? |
4395# - AUTO RECLOSE LOCKOUT 3960# - CLOSURE BLOCKED (MINOR ALARM) 3669# - LOCKED OUT (MAJOR TROUBLE, HYDRAULICALLY LOCKED, ALL SIGNALS BYPASSED, ONLY LBB FOR PROTECTION) |
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WHAT OCCURS AS GCB HYDRAULIC PRESSURE RISES FROM NORMAL RANGE? |
5004#, IF PUMP RUNNING: CLOSURE BLOCKED. 3 HOUR TIMER STARTS, AFTER WHICH OPENING IS BLOCKED
5293# - SAFETY VALVE LIFTS |
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WHAT SF6 PRESSURE WILL TRIGGER A "MAJOR TROUBLE" ALARM AND WHAT ACTIONS OCCUR? |
89.9 PSIG
FOR BREAKERS ON RAT BUSES - BREAKER LOCKS IN PLACE ("49'ers")
FOR OTHER BREAKERS, INCLUDING UAT BUSES, BREAKER TRIPS |
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WHICH BUSES CONNECT TO THE UAT's AND RAT's? |
RAT 1: BUS 4 UAT 1: BUS 7
RAT 2: BUS 9 UAT 2: BUS 11
UAT'S 7-11 RAT'S 49'ers |
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WHAT IS REQUIRED TO OPEN A 13.8 KW DISCONNECT? |
N2 PRESSURE FOR ARC QUENCH BLAST
UNLESS FAULT CAUSES OPENING |
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WHERE ARE THE 13.8 DISCONNECTS OPERATED? |
K BUILDING |
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WHAT COMMUNICATION METHODS ARE USED FOR PROTECTIVE RELAYS ON INCOMING LINES? |
FIBER OPTICS
CARRIER WAVE |
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WHAT ARE THE POWER SUPPLIES FOR THE 86 DEVICES ON THE MAIN POWER TRANSFORMERS? |
U1: 1A-2 / 2A-2
U2: 2A-2 / 1A-2 |
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WHAT ANALYZES FOR WATER AND GASSES ON THE MAIN POWER TRANSFORMERS? |
WATER: CALIPSO MONITOR
GASSES: SERVERON MONITOR |
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CAN GCB'S BE CLOSED ON A TOTAL LOSS OF HYDRAULIC PRESSURE? |
ACCUMULATOR ALLOWS ONE CYCLE |
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WHAT IS A RAST DEVICE? |
RECLOSE ALIVE SYNCHRONOUS TIME DELAY
OUR BREAKER CLOSES AFTER TRANSMISSION LINE IS CLOSED IN
WILL ONLY ATTEMPT SINGLE RECLOSURE |
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HOW QUICKLY DOES A BREAKER TRIP?
ON LOCAL BREAKER BACKUP? |
2 CYCLES NORMALLY
8 CYCLES ON LBB |
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WHAT IS THE NORMAL POWER SUPPLY FOR THE RELAY HOUSE?
BACKUP? |
MCC 18-2
WELL HOUSE DISTRIBUTION PANEL |
