Flint Hills Resources (FHR) in Port Arthur, TX, experienced an emissions event after a pump fire late last month.
A portion of the affected unit was shut down and repairs were underway as of last week.
The incident happened Feb. 27 at 4 p.m. at the facility, located at 4241 Savannah Ave in Port Arthur.
Operations personnel noticed a fire on the pump, which caused an upset of the light olefins unit resulting in the routing of process gases to the LOU flare, said officials at the Texas Commission on Environmental Quality.
During the event, the LOU flare was seen to be intermittently smoking. The cause of the fire is unknown and FHR is conducting an internal investigation to identify the root cause of the incident.
The cause of the fire was a pump leak that was isolated and extinguished that evening, said Claire Jackson, regional manager of public affairs at FHR. There were no FHR employee injuries with the fire.
An emergency contractor responding to the incident sought medical evaluation and returned to work the next shift, she said.
As part of the start-up procedures, Flint Hills Resources will post a Southeast Texas Alert Network message to let the community know of the flaring activity over the next few days.
Between 2013 and 2017 Flint Hills Resources Port Arthur reduced its unplanned reportable emission events by 72 percent, company officials said.