CCM (Exam 2)

Question 1

What 3 subsystems makeup the ICCM?

Answer 1

-RVLIS (RX level when NCPs off, % voiding when NCPs on)
-CET Monitor (Coolant temp at selected location at core exit)
-Subcooling Margin Monitor (Subcooling margin core CET and Thot. Range -35F-200F

Question 2

What are indications of Natural Circulation?

Answer 2

Subcooling > 0
Thot stable or decreasing
CETs stable or decreasing
SG pressure stable or decreasing
Tcold near Tsteam

Question 3

Which thermocouples are used to calculate subcooling?

Answer 3

Highest 5

Question 4

A Train inputs for ICCM

Answer 4

-B WR Pressure
-C and D WR Thot

Question 5

B Train inputs of ICCM

Answer 5

-C WR Pressure
-A and B WR Thot