TAA reactivity and power distribution anomalies

how is an uncontrolled CEA withdrawal terminated when subcritical, what about at power?

terminated by High logarithmic power level trip from subcritical

at power terminated by CPC VOPT, or HIGH PZR pressure trip

describe the limiting case for a full strength CEA drop?

limiting cause is the CEA drop which does not cause a trip to occur

what conditions would results in the least time available during an inadvertent dilution?

Mode 5 (cold shutdown) with RCS drained down results in least time available

describe the limiting CEA ejection fault?

Limiting event fault for reactivity and power distribution anomalies

results from instantaneous circumferential rupture of the CEDM housing or CEDM nozzle

what kind of trip does a CEA ejection cause?

causes a high power trip

what percentage of fuel is assumed to suffer from clad failure during a CEA ejection

assumed 19% of the fuel rods suffer clad failure