Rod Control Flashcards
1
Q
What do step counters show? When would they be wrong?
A
Where rod control thinks the rods are.
After a trip.
2
Q
Rod speed in manual and auto
A
Manual
- Control: 48
- SD: 64
Auto
- Control: 8 to 72
- SD: N/A
3
Q
When will rods not move in overlap?
A
When manually selected
4
Q
Describe coil sequence to withdraw rod
A
Energize moveable
De-energize stationary
Energize lift
Energize stationary
De-energize moveable
De-energize lift
5
Q
Describe rod speed program
A
Nothing if Tavg is within 1.5 F if Tref
8 SPM if Tavg is 1.5 to 3 away
Ramp 8 to 72 as dT goes from 3 to 5
6
Q
What is DRPI’s accuracy?
A
+/- 4 steps when both trains are available
+/- 12 steps when one train is available
