Marathon Galveston Bay Reports 24-Hour Emissions Event


   
Miguel E. Andujar
DTN Refined Fuels Market Reporter

   DAVENPORT, FL (DTN) -- Marathon Petroleum's 631,000 bpd Galveston Bay 
refinery experienced a 24-hour emissions event after a damper malfunction 
tripped a selective catalytic reduction (SCR) blower offline, a filing with the 
Texas Commission on Environmental Quality showed.

   The event began at 10:30 a.m. CT Monday (8/31) and ended at 10:30 a.m. 
Tuesday (9/1) at the largest U.S. refinery, located in Texas City, Texas, 
according to the filing.

   The event involved multiple pre-heat and reheat furnaces and a regeneration 
flue gas heater at the refinery's Ultraformer Unit No. 3 (UU3), a catalytic 
reformer used to produce high-octane gasoline blending components. Estimated 
nitrogen oxide (NOx) emissions totaled 400 pounds.

   Operators ran the blower manually while repairs were made to the damper, the 
filing added.

   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.




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