Disasters & Survival - 118 free documentaries about engineering disasters.
Start with Horrifying Runaway Train: San Bernardino Train Disaster SP 7551 East (51 min, Wonder), then The Mind-Blowing Flaw That Flooded New Orleans (25 min, Practical Engineering). All 118 documentaries here are free to watch from their makers' official uploads. To read deeper, the top-rated book on engineering disasters is Midnight in Chernobyl by Adam Higginbotham.