What is the required action per DG TS 3.3.7 if the DG loss of voltage coil is bad?
Place in bypass within 1 hour
What is the applicability for DG TS 3.8.1?
Modes 1 through 4
What are the KW ratings for the DG (continuous and short term)?
5500kw continuous; 6050kw for 2hrs in 24hrs
What increases DG efficiency and how is it driven?
A turbo; it is driven from the exhaust
What is the capacity and run time of the DG Day Tank?
550 gallons; good for ~1.5 hours (calculated as 84 min at 6.55 gpm)
When loading a DG, how do you pick up more load and what must be avoided?
Raise speed to pick up load; avoid reverse power
How many days of fuel does the DG storage tank provide?
7 days
When does the DG essential HVAC stop?
After the DG stops AND the room temperature is <110°F
How long can the DG run without the Spray Pond (loaded vs unloaded)?
2.6 min loaded; 15 min unloaded
How does a Loss of NKN affect the DG?
The DG will trip if not in Emergency run (but can still start for an emergency run)
How does the Non-Fail safe air (‘off air’) affect the fuel rack?
It applies air to move the fuel rack to the no-fuel position
What signals trigger a DG auto start?
CSAS (test mode), LOP, AFAS 1 or 2, SIAS
On a loss of control air, what is the only auto trip available?
Overspeed (which will close the butterfly valve)
What happens if a SIAS occurs while the DG is in a cooldown cycle?
DG enters emergency mode (with some high priority alarms active)
What is regained when the DG is placed in ‘Override’?
You get back 3 output breaker trips and can control speed and voltage
How does the DG respond to an inadvertent CSAS?
DG starts in test mode but will not load (because there is no LOP)
What are the three DG Emergency trips?
Low L.O. pressure, Overspeed, Generator Differential
What does the DG overspeed butterfly valve isolate?
Combustion air
If the DG doesn’t start, what mechanical check should be performed?
Check that the turning gear is disengaged
What happens if the DG loses control power while connected to the grid?
The DG will motor; the output breaker remains closed
