Xe-135 · Transient
Xenon-135 Transient Simulator
Iodine–xenon buildup and burnout after a power change. Watch the post-trip xenon peak build in, the dead time it forces, and whether a restart is precluded.
Benchmarked · DOE-HDBK / NRC curvesOpen →
Decay Heat · ANS-5.1
Decay Heat Calculator
Residual fission-product power after shutdown — the heat that keeps coming once the chain reaction is already gone. The reason a core still needs cooling long after scram.
Full ANSI/ANS-5.1-2005 · four nuclidesOpen →
Point Kinetics · 6-group
Point Kinetics Simulator
Reactor period, startup rate, and the prompt jump from a reactivity insertion. Cross $1.00 and watch the period collapse into prompt criticality.
6-group Keepin data · inhour-benchmarkedOpen →