Space Life Support Risk Matrix (2D)

A spacecraft's environmental control and life-support system (ECLSS) is only as safe as its weakest subsystem's failure math. This 2D companion models five real ECLSS subsystems — oxygen generation, CO2 scrubbing, water recovery, thermal control and power distribution — as exponential-reliability components, and lets you tune each one's mean time between failures, consequence severity, standby redundancy and mission duration to see exactly where it lands on a live 5×5 probability-versus-severity risk-matrix heatmap, the same triage tool mission-assurance teams use to decide which hazards need engineering action before flight.