In Orange County, California, officials have reduced evacuation orders after successfully alleviating the risk of a catastrophic explosion from an overheating chemical tank at GKN Aerospace in Garden Grove. The tank, containing 7,000 gallons of methyl methacrylate (MMA), had posed a significant threat due to rising temperatures and pressure.

Authorities confirmed that a crack in the tank helped reduce internal pressure, eliminating the immediate risk of a boiling liquid expanding vapor explosion (BLEVE). However, 16,000 residents closest to the site are still advised to stay away as efforts continue to cool the tank and prevent any toxic leaks or smaller explosions.

Ongoing Safety Measures

To manage the situation, crews have been dousing the tank with cool water and removing insulation to lower its temperature. Orange County Fire Authority Interim Chief TJ McGovern stated that while the catastrophic explosion threat is gone, other risks remain. Federal assistance has been bolstered by a presidential emergency declaration, and California Governor Gavin Newsom has issued a state of emergency to support local response operations.

Continuous atmospheric monitoring has shown no chemical leaks, but some residents have reported symptoms consistent with MMA exposure, such as skin and respiratory irritation. Schools in the area have shifted to online learning as a precaution, and some remain closed.

Community Impact and Legal Actions

The incident has led to significant disruptions, with about 50,000 residents initially evacuated. As the situation stabilizes, schools and businesses are gradually reopening. However, a class-action lawsuit has been filed against GKN Aerospace, alleging negligent handling of the chemical, which has caused widespread community impact.

GKN Aerospace has apologized for the disruption and is cooperating with emergency services to monitor and mitigate risks. The Orange County District Attorney has opened a criminal investigation into the incident, seeking to determine the cause of the refrigeration system failure that led to the tank overheating.

While theme parks like Disneyland remain unaffected and open, the community continues to grapple with the aftermath of the emergency. Local hotels have offered discounted rates to evacuees, and Red Cross shelters remain available for those in need.

Original reporting: KTVZ (Central Oregon) — read the source article.