Standards
Cases where a rule, standard, or specification shaped the failure—or changed because of it.
Investigations
Six Miles an Hour
At Malbone Street in 1918, an inexperienced operator took a six-mph curve at more than 30 mph. Wooden cars struck the tunnel wall near Prospect Park in New York’s deadliest subway wreck.
The Hatch Opened Inward
Apollo 1’s ignition source was never conclusively identified. NASA’s review instead found a pressurized pure-oxygen cabin, combustible materials near possible ignition sources, and an inner hatch the crew could not open before…
The Lines Were in the Fire
When LST-353 exploded at Pearl Harbor in 1944, nearby landing ships needed to separate. Fire made some of their forward mooring lines unreachable, helping turn one explosion into a harbor-wide disaster.
The Filter Was at the Top
Windscale’s chimney filter was a late addition 125 metres above the reactor. In 1957 it caught most radioactive particulate—but iodine vapour still escaped into the milk supply.
One Bulldozer Never Came Back
Workers tried to stop a growing leak in Idaho’s Teton Dam with bulldozers. One machine was never recovered. Thirty-seven minutes later, the dam failed.
The Warning Was a Man Waving
After the Sunshine Skyway Bridge collapsed in 1980, one driver backed away and waved desperately at approaching traffic. Several cars—and a Greyhound bus—went around him.
The Light Said Closed
At Three Mile Island in 1979, a relief valve stayed open while control-room instruments indicated it was closed. Operators did not recognize the coolant loss; the reactor suffered a partial meltdown.
The Crowd Became the Lock
At Chicago’s Iroquois Theatre in 1903, some exits opened inward. As hundreds pressed toward them, the crowd itself could keep the doors shut. The disaster helped change how public exits work.
Add No More Load
On August 29, 1907, Theodore Cooper ordered that no more load be added to the bending Quebec Bridge. The message reached Pennsylvania. It never reached the men still adding steel.
Inside the Joint
Silver Bridge collapsed over the Ohio River in 1967 after a 0.1-inch crack in one eyebar grew to failure. Forty-six people died; the collapse led to national bridge-inspection standards.