Chemical Tank Leak in Southern California Prompts Mass Evacuations

Tens of thousands of residents in Southern California have been evacuated due to a chemical tank leak at an aerospace facility. Officials warned the tank is at risk of failing and potentially exploding.

The tank, located at GKN Aerospace, contains approximately 7,000 gallons of methyl methacrylate. This highly volatile substance is commonly used in plastic production, according to Craig Covey, Chief of the Orange County Fire Authority. While the exact timing of the failure remains uncertain, authorities are preparing for the worst.

Governor Gavin Newsom has declared a state of emergency for Orange County. He emphasized the state’s commitment to supporting local responders and ensuring community safety.

Understanding the Risks

Elias Picazo, a chemistry professor at the University of Southern California, explained that methyl methacrylate is flammable and generates heat. If leaked into the atmosphere, it presents a risk of uncontrolled fire or explosion from any spark or flash. Currently, fire officials are working to keep the tank cool.

Previously, authorities believed the tank’s internal temperature was decreasing. However, a recent operation inside the danger zone revealed an increase of about 1 degree per hour. On Friday night, temperatures had risen to 90 degrees, starting from 77 degrees earlier in the day.

Covey has labeled this situation as “the most significantly dangerous event” in his extensive fire service career. Fortunately, no injuries or fatalities have been reported so far.

Health Implications

Methyl methacrylate poses health hazards as a respiratory irritant, causing lung, skin, and eye irritation, along with nausea and dizziness. Covey outlined two potential scenarios: a tank failure resulting in chemical spillage, or a tank explosion dispersing particles into the air.

In the case of spillage, the chemical’s heavier-than-air property would cause vapor settling. Crews have constructed containment barriers using sandbags to prevent chemical leakage into storm drains or waterways. An explosion would elevate danger, potentially affecting surrounding chemical and fuel storage.

Ongoing Efforts and Evacuation

Efforts to cool the tank continue, with officials exploring safer incident resolution methods. “Letting this thing fail and blow up is unacceptable,” stated Covey, emphasizing a solution-seeking approach. No compromising particles have been released into the air, and there is no active plume observed as of Friday.

Authorities advised residents to remain indoors. Evacuations have been enforced within a one-mile radius of the site, with no specified timeline for lifting the orders. The leak’s cause is still under investigation.