Authorities in Southern California have evacuated approximately 50,000 residents after a chemical tank containing a highly flammable substance leaked at the GKN Aerospace facility in Garden Grove. Officials warned that the tank, holding an estimated 7,000 gallons of methyl methacrylate, could fail and possibly explode.
What happened
The leaking tank contains methyl methacrylate, a volatile chemical used in plastic production, described by the Orange County Fire Authority as “highly flammable” and capable of generating heat on its own. Firefighters discovered a crack in the tank during an overnight operation, which may be releasing pressure, potentially reducing the immediate risk of explosion.
Despite this, the tank’s internal temperature has risen steadily, reaching over 100 degrees Fahrenheit, more than double the optimal temperature for safely containing the chemical. Efforts are ongoing to cool the tank and prevent further escalation.
The Federal Emergency Management Agency (FEMA) is assisting local responders, noting a malfunctioning valve remains unaddressed, allowing the chemical reaction to continue unchecked. Two additional tanks at the facility have been affected but are still structurally sound.
California Governor Gavin Newsom declared a state of emergency for Orange County to mobilize state resources in support of managing the crisis.
Why it matters
The potential for a Boiling Liquid Expanding Vapor Explosion (BLEVE) poses a severe hazard to the surrounding community and environment. Such an explosion could disperse toxic methyl methacrylate vapors broadly and jeopardize adjacent chemical storage tanks, escalating the disaster.
Exposure to methyl methacrylate can cause respiratory irritation, nausea, dizziness, and skin and eye irritation, creating additional health risks for residents near the site. Authorities have implemented containment measures to prevent chemical runoff into storm drains and waterways.
The evacuation protects residents while emergency personnel conduct high-risk operations to neutralize the threat, emphasizing the ongoing danger and complexity of the incident.
Background
GKN Aerospace’s Garden Grove facility operates industrial tanks holding various chemicals used in aerospace manufacturing. Methyl methacrylate is known to be a flammable liquid that can self-heat, making containment challenging when leaks occur.
Previous operations assumed a cooling trend within the tank, but recent data showing rising temperatures have intensified concern and emergency response efforts.
Authorities continue to investigate the cause of the leak and are exploring options beyond letting the tank fail or explode, aiming to resolve the situation safely.
Sources
This article is based on reporting and publicly available information from the following source:
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