Authorities in Garden Grove have evacuated 50,000 residents as a dangerously overheating tank containing 26,500 liters of methyl methacrylate threatens to rupture or explode near other hazardous fuel supplies.
The Threat of Rupture
The tank, owned by GKN Aerospace in Garden Grove, 30 kilometers southeast of Los Angeles, contains methyl methacrylate (MMA), a volatile chemical used in plastics and coatings. Since a vapor leak and temperature spike were detected on Thursday, emergency services have been working to cool the container to prevent a catastrophic failure.
By Saturday, the internal temperature reached 32 degrees Celsius, significantly exceeding the safe limit of approximately 10 degrees. Officials warn that the situation remains highly unstable, with either a physical rupture or a thermal explosion posing a severe danger to the surrounding area.
Mass Evacuations and Safety Concerns
Approximately 50,000 people have been evacuated from the affected zone in Orange County, relocating to temporary shelters or staying with family and friends. Local fire official Craig Covey, citing 32 years of service, noted that he has never encountered such a critical incident. He warned that a thermal reaction could trigger a chain reaction involving adjacent fuel and chemical storage tanks.
MMA is a flammable monomer that is heavier than air and can cause respiratory, skin, and eye irritation. Residents within the evacuation zone have already reported symptoms, including dizziness and nose and throat irritation, as authorities scramble to find a viable solution with experts nationwide.
