Use this portion of the case and perform an action cycle analysis. (8 marks).

“To increase pressure and temperature in the steam separator, the operators removed more manual control rods from the reactor, bringing down the number of control rods to 8.  It was 1:22 am and indications to the operator suggested that the reactor was stable.  In reality though, the cooling water in the reactor was being converted to steam as the reactivity of reactor increased.”

Identify two variables that the operators need to bridge the gulf of evaluation. (2 marks)