AOP-4 "Uncontrolled PCS Dilution"

Question 1

AOP-4 entry conditions

Answer 1

Unexpected rise in power range, wide range, and/or source range NI in conjunction with any of the following:

 - Unexpected rise of audible count rate
 - Unexpected VCT level rise
 - Unexpected lowering of Letdown Temperature as indicated on TIC-0203, Low Pressure Letdown Flow Temp Control

Question 2

AOP-4 automatic actions

Answer 2

Reactor trip

Question 3

AOP-4 reactor trip criteria

Answer 3

NONE

Question 4

AOP-4 immediate actions

Answer 4

NONE