Marathon Galveston Bay Reports Emission After Unit Upset


   
Miguel E. Andujar
DTN Refined Fuels Market Reporter

   DAVENPORT, FL (DTN) -- Marathon Petroleum's 631,000 bpd Galveston Bay 
refinery experienced sulfur dioxide emissions exceeding a reportable quantity 
after a unit upset at the facility, a filing with the Texas Commission on 
Environmental Quality showed.

   The event occurred Tuesday (8/18) between 2:30 a.m. and 8:30 a.m. CT at the 
largest U.S. refinery, located in Texas City, Texas, according to the filing.

   It described the event as involving the refinery's #5 Topper Heater and Alky 
Heater components that support primary distillation and alkylation processes.

   Estimated sulfur dioxide emissions from the incident totaled 1,613 pounds, 
the filing said, adding that operators stabilized the affected heaters and 
resumed operations following the event.

   The Galveston Bay refinery primarily produces gasoline, diesel and jet fuel.

   DTN reached out to Marathon Petroleum for additional details but did not get 
an immediate response.




(c) Copyright 2026 DTN, LLC. All rights reserved.