Valero Texas City Refinery Reports SO2 Emissions Event


   
   HOUSTON, TX -- Valero's 260,000 bpd Texas City Refinery reported an 
emissions event after an equipment malfunction triggered excess sulfur dioxide 
releases at its Complex 4 facility, according to a report filed with state 
regulators.

   The incident began at 4:18 a.m. on Wednesday (5/20), and lasted 
approximately one hour before concluding at 5:18 a.m.

   According to the initial report submitted to the Texas Commission on 
Environmental Quality, inclement weather contributed to an equipment issue 
within the Gas Oil Hydrotreating (GOHT) Unit, Train 1. The malfunction caused a 
unit upset, resulting in excess SO2 emissions released from incinerator 
G-18-1403.

   The facility reported an estimated 823 pounds of sulfur dioxide were emitted 
during the event, significantly exceeding the authorized emission limit of 
98.44 pounds per hour.

    The incident remains listed as open on the state's reporting system.




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