OC Crews Probe 100-Degree GKN Tank as 50,000 Remain Evacuated

11 articles · Updated · KABC-TV · May 25

Garden Grove firefighters worked overnight on high ladders to determine whether pressure has been released from a compromised GKN Aerospace chemical tank and whether the explosion threat is over.
A crack found Saturday night may be easing pressure, but OC Fire Authority said the tank is at or above 100 degrees internally, with no way to tell how far above that threshold it has climbed.
Crews are checking for additional cracks and signs of catastrophic failure; officials said there is one known crack and no active chemical leak.
50,000 residents remain under evacuation orders as local leaders seek a federal emergency declaration after Gov. Gavin Newsom requested FEMA support for shelters, evacuations and other aid.

How did a 7,000-gallon chemical tank become a ticking time bomb, forcing a mass evacuation in Orange County?

Is the crack in the volatile tank a sign of relief or a final warning of a much larger disaster?

With no playbook for a threat this rare, how can responders innovate in real-time to avert a catastrophe?