AMSAC Flashcards
1
Q
What arms AMSAC?
What will AMSAC do when actuated?
A
ARMS
Lo-Lo Lsgwl < 11% 3/4 (one from each loop)
+
Pturb > 32% (Pimp) 2/2
Actions
- trip turbine
- start AFW pumps (Motor and turbine)
2
Q
How long must Ls/g be below 11% for AMSAC to actuate?
How long is AMSAC armed after Pimp lowers below 32%?
A
25 sec below 11%
armed for 240 sec
3
Q
What is the postulated event that AMSAC is designed to mitigate?
A
ATWIS with a loss of feedwater
- ATWIS and loss of FW
- loss of heatsink, still generating a lot of heat
- RCS will heatup and Pressure will increase
- could damage RCS piping/ components
