NEW YORK: Emergency crews in Southern California are working to prevent a possible explosion at an industrial tank containing a highly toxic and flammable chemical, with officials now reporting the discovery of a “potential crack” that may be reducing internal pressure.
The incident is taking place at a GKN Aerospace facility in Garden Grove, California, located about 30 miles south of Los Angeles.
Tank Containing Toxic Chemical Under Close Monitoring
Authorities said the tank contains methyl methacrylate, a chemical used in plastics and aerospace manufacturing. Officials warned it could rupture or explode, potentially releasing up to 7,000 gallons (26,500 litres) of hazardous material.
The situation began when the chemical inside the tank overheated, and initial efforts to stabilise the reaction were unsuccessful due to valve damage, according to fire officials.
“Potential Crack” May Be Relieving Pressure
Orange County Fire Authority officials said specialists identified a possible crack in the tank during inspection, which could be helping release internal pressure.
Fire officials described the finding as “positive intelligence,” but said it remains unclear whether it is significantly reducing the risk of explosion.
Evacuations in Nearby Areas
Evacuation orders were issued for parts of Garden Grove, affecting tens of thousands of residents as a precautionary measure. Authorities continue to monitor air quality and potential exposure risks.
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Health and Environmental Concerns
Health officials warned that prolonged exposure to chemical vapours could cause severe respiratory issues. However, monitoring agencies reported no detectable airborne contamination in surrounding areas at this stage.
Crews are also preparing containment measures to prevent any possible spill from entering storm drains or nearby waterways.
Ongoing Investigation and Risk Assessment
Officials say they are continuing round-the-clock monitoring to stabilise the tank, manage temperature levels, and assess whether controlled release or containment measures may be required.
The U.S. Environmental Protection Agency has said current assessments suggest a possible low-volume release scenario, while emergency teams continue mitigation efforts on site.
