Orange County Chemical Tank Deemed Uncontrollable As Officials Warn Of Spill Or Explosion
Orange County officials on Friday warned that a leaking chemical storage tank at a GKN Aerospace facility is "unable to be secured and mitigated" and could either spill thousands of gallons or explode, prompting expanded evacuations.[1]
Officials said crews identified a leak of methyl methacrylate and are preparing for two worst-case scenarios: a tank failure that could release roughly 6,000 to 7,000 gallons, or a thermal runaway explosion that might trigger a chain reaction with nearby fuel and chemical tanks.[1] Authorities said there was no active gas leak or toxic plume as of early afternoon, but they ordered expanded evacuation zones and opened two emergency shelters in Garden Grove and Cypress.[1] Early reporting put the number of people evacuated at about 20,000.[2] Rep. Derek Tran said he is in contact with FEMA and the EPA and is urging federal assistance for Garden Grove.[1] As of about 1 p.m. local time, officials reported no injuries or fatalities.[1]
On Thursday night, May 21, crews first detected the methyl methacrylate leak from a 34,000-gallon storage tank and began critical cooling operations that night to try to stabilize the container.[1] By Friday morning, Orange County Fire Division Chief Craig Covey described the tank as "actively in crisis" and said it could not be secured or mitigated.[1]
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📌 Key Facts
- On Thursday night, May 21, 2026, officials identified a leak of methyl methacrylate from a 34,000-gallon storage tank at the GKN Aerospace facility in Orange County and began critical cooling operations.
- By Friday morning, May 22, 2026, Orange County Fire Division Chief Craig Covey said the tank is 'unable to be secured and mitigated' and is 'actively in crisis.'
- Officials said they are preparing for two scenarios: failure of the tank that could spill between 6,000 and 7,000 gallons of methyl methacrylate into the surrounding area, or a thermal runaway explosion that could trigger a chain reaction with neighboring fuel and chemical tanks.
- Authorities reported there was no active gas leak or toxic plume as of early afternoon May 22, 2026, but ordered expanded evacuation zones and opened two emergency evacuation centers in Garden Grove and Cypress.
- Rep. Derek Tran said on May 22 that he is in contact with FEMA and the EPA and is urging federal assistance for Garden Grove.
- As of about 1 p.m. local time on May 22, 2026, officials reported no injuries or fatalities.
📰 Source Timeline (2)
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- On Thursday night, May 21, 2026, officials identified a leak of methyl methacrylate from a 34,000-gallon storage tank at the GKN Aerospace facility in Orange County and began critical cooling operations.
- By Friday morning, May 22, 2026, Orange County Fire Division Chief Craig Covey said the tank in "the biggest crisis" is "unable to be secured and mitigated" and is "actively in crisis."
- Covey said officials are preparing for two scenarios: failure of the tank that could spill between 6,000 and 7,000 gallons of methyl methacrylate into the surrounding area, or a thermal runaway explosion that could trigger a chain reaction with neighboring fuel and chemical tanks.
- Officials stated there is currently no active gas leak or toxic plume, but expanded evacuation zones have been ordered and two emergency evacuation centers opened in Garden Grove and Cypress as of early afternoon May 22.
- Rep. Derek Tran, D-Calif., said on May 22 that he is in contact with FEMA and the EPA and is urging federal assistance for Garden Grove.
- As of about 1 p.m. local time on May 22, no injuries or fatalities had been reported.