Published: October 9, 2025 |

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A fire occurred in the heating system of ONEOK’s MB-4 fractionator, which is one of the facilities located at ONEOK’s Mont Belvieu, Texas, fractionation complex.

Fractionation operations at the complex were promptly shut down, and the fire, which was limited to MB-4, was quickly extinguished. ONEOK anticipates that, after completing initial safety reviews, ONEOK will resume operations of the complex, other than the MB-4 fractionator, which will resume operations following completion of repairs.

In a statement, ONEOK said it thanks the employees, first responders, and community members who worked together to respond quickly to the incident. Employee and community safety remains the company’s top priority. No employees sustained injuries in connection with the incident.

ONEOK delivers energy products and services vital to an advancing world. They are a leading midstream operator that provides gathering, processing, fractionation, transportation, and storage services. Through their more than 60,000-mile pipeline network, they transport the natural gas, natural gas liquids (NGLs), refined products, and crude that help meet domestic and international energy demand, contribute to energy security and provide safe, reliable and responsible energy solutions needed today and into the future. As one of the largest diversified energy infrastructure companies in North America, ONEOK is delivering energy that makes a difference in the lives of people in the U.S. and around the world.

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