
HOUSTON, Jan 27 (Reuters) - Pemex's 312,500 barrel-per-day Deer Park, Texas refinery sustained a coker upset on Sunday night because of freezing weather, according to a filing with the Texas Commission on Environmental Quality.
Freezing conditions exceeded the preparations for the severe cold along the U.S. Gulf Coast Sunday night through Tuesday morning, the company wrote in the notice filed with the TCEQ.