A chlorine gas leak at Olin Corp.’s Plant B in Freeport, Texas, triggered a swift emergency response on May 20, forcing residents in multiple cities to shelter indoors. The incident, first reported by The Houston Chronicle, was detected around 9 a.m. through Brazosport CAER, a community alert system. On-site emergency protocols were immediately activated, confining workers while containment teams worked to secure the leak.
Gas Detected Beyond Plant Perimeter
Within minutes, the Lake Jackson Police Department confirmed a Level 3 chlorine release, indicating the gas had escaped the facility and was detectable off-site. Authorities issued urgent advisories for residents in nearby Clute and Lake Jackson, instructing them to stay inside, seal all openings, and shut off air conditioning systems to minimize exposure. The leak was contained by 9:46 a.m., and community-wide shelter orders were lifted by 10:40 a.m., though the plant itself remained under lockdown past 11:30 a.m. for further safety evaluations.
Workers Assessed After Exposure
Olin Corp. confirmed that all personnel had been accounted for, with medical professionals evaluating those potentially exposed. While the company did not disclose specific treatment numbers, the International Union of Operating Engineers Local 564 reported that four of its members received medical attention. Three were later discharged, while one remained hospitalized in stable condition.
Rare Level 3 Incident Highlights Risks
The leak marked one of the few Level 3 chemical releases in the region in recent years, contrasting with the fatal 2024 PEMEX Deer Park refinery hydrogen sulfide leak, which was classified as Level 1. Olin, a leading North American chlorine producer, stated it is cooperating with investigators and reiterated that employee and community safety remains its top priority. The incident underscores ongoing risks in industrial chemical operations, even with stringent safety measures in place.
Olin Pledges Full Cooperation with Probe
In an official statement, Olin emphasized its commitment to transparency and regulatory compliance as local authorities continue their investigation. The company assured stakeholders that preventive measures will be reviewed to avoid future occurrences. Meanwhile, community leaders have called for enhanced emergency preparedness protocols to address potential industrial hazards in the densely populated Gulf Coast region.
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