EDG

Question 1

What are teh EDG test frequencies?

Answer 1

Monthly - Normal Start - 6 min run
Semi Annual - Fast Start
2 Yr - Load Reject Test - EDG DOES NOT TRIP ON LARGEST LOAD
2 YR - AUTO START and load shed
2 Yr - 24hr endurance

Question 2

What is basis for CCSW limits when running 2/3 EDG?

Answer 2

2/3 EDG CWP discharges to same pipe as U2 CCSW pumps and can choke CWP flow.

If water intake temp less than 82 F, no restrictions
If >82F and <91F, then no more than 3 U2 CCSW pumps operating at same time
IF >91F, then no more than 2 U2 CCS Pps operating

Question 3

What happens if standby valvues of EDG Voltage and frequency set improperly

Answer 3

may result in failure to autoclose if values too low

Question 4

Why is EDG INOP when being surveillance tested?

Answer 4

Surveillance testing prevents it from being able tp perform auto emergency design function:
closing of air start cutoff valve during bar over,
lowering speed setpoint for low idle start
EDG tied to grid w/ droop not at 5%

Question 5

Which conditions require emergency shutdown of EDG?

Answer 5

Loss of Engine cooling
Loss of Engin Oil Pressure
Indication of equipment damage or personnel injury possible

Question 6

What indications are expected when paralleling DG with another power source?

Answer 6

Higher voltage - will pick up VARS (reactive load) and vice versa
Higher speed - will pick up Watts (Real Load) and vice versa

Question 7

What is preferred method to secure EDG during emergency stop?

Answer 7

Operate Fuel Rack Lever