Week 1
If a bus is faulted, will it ABT over?
No
What are the cooling methods for the transformers?
SAT has natural oil and forced air
UAT and MPT have forced oil and air
What is bus duct cooling cooled by?
WS
How do you open and close OCB and GCB?
Air to close, Spring to open (OCB)
Both spring (GCB)
What is the first thing to be done on a fuel tanker before unloading it?
Ground it
What does LBB or 86 device do?
Open the breakers on both sides of the switchyard if a breaker fails to open
What are the transformer cover gases?
SAT has bladder between atmosphere and oil
UAT and MPT have N2
What cools the field on the main generator?
H2
What is the purpose of the Fuller Earth Filter?
pH control
What must be done to diesel oil fuel before use?
It must be certified
What are the UAT, SAT, and MPT trips?
DONS
DONSB4
DDNOBS
What will actuate deluge on a transformer?
Diff. current or sudden pressure relay
Why must you trip the 41 device (PMG Output Breaker) when there is a lockout?
To remove generator field and protect the generator from internal faults
What is the steam supply for the TDFWpp?
MS <40%
MSR (A) >40%
How full do you feed the AF day tank?
80%, which is when the lo level alarm will turn off
What do we use for equipment and breaker tests?
Aux. contacts and MOC for equipment
Secondary contacts and trombone for breaker
What will autostart the WS pump?
Low header pressure of 80 psig
What are the SAC trips?
High air cooler outlet >145
High lube oil cooler outlet >140
High vibes >1.2mils
low motor current <15.6
low lube oil pressure <15 psig
What are the Main Steam Isolation signals?
Hi-2 Cnmt press 8.2 psig, Low steamlin press 640 psig, Hi steamline press rate 100psig/50s
On a SI with no UV signal from the ESF buses, what will the D/G do?
It will do a fast startup and stay running, but it will not power the ESF buses
What are the 250 VDC loads?
Computer Inverter, Vacuum Breaker Valve, Emer. DC ASSO pump, Emer. bearing oil DC pump, B & C TDFWpp Emer. DC oil pump
What will happen on a high rad on 0PR005J?
What are the four purposes of the generator gas system?
Purity monitoring, Cover gas for stator tank and VCT, Provide H2, and Provide VCT
What happens on low NPSH for FW pp?
CD152 closes, CD157 opens, Start CD/CB standby pump and AOP, Fully open HD046
What is the full D/G startup sequence
0RPM (air start solenoid is energized, pneumatic protection pressurized, room fan starts)
40RPM (incomp. seq. timer relay energized)
250FAST (125VDC flash field energized)
280RPM (fuel oil trans pp start, air valves closed and lockout/reset isolated, crank fail circuit disabled, JW pp off, SX169 open, prelube and heaters off)
450SLOW (3 min wait the to 600rpm and flash field energized)
570RPM (ready to load signal, flash field deenergized)