Class 120 VAC (PN) Flashcards
1
Q
What will happen if you lose 2 PN buses?
A
Reactor Trip with full ESFAS actuation
2
Q
How many PN buses are you allowed to have on their voltage regulator at a time?
A
1
Only 1 inverter at a time may be lined up to its VR
3
Q
How many Atmospheric Dump Valves are available for heat removal if PNC loses power?
A
4
4
Q
How many Atmospheric Dump Valves are available for heat removal if PNB loses power?
A
2
5
Q
Is PN grounded or ungrounded?
A
Ungrounded
6
Q
What will happen on a loss of 1 PN Bus
A
Causes 2 RTSG breaker to OPEN, the reactor WILL NOT
* Loss of PNC: ¼ of Rod bottom lights go out (Pac-Man)
* Loss of PND: ¾ of Rod bottom lights go out (Pizza Slice)
