(nasdaq) -- Exxon Mobil Corp. (XOM) reported flaring at its refinery in Joliet, Ill., Friday, according to a filing with the National Response Center.
The 238,600 barrel-a-day refinery released nitrogen dioxide, nitrogen oxide and hydrogen sulfide into the air after an "over pressuring" incident in an undisclosed unit. The release lasted about 30 minutes, and the unit was shut down and the valves were reset, according to the filing.
Also, the public are being warned about possible flaring from Mossmorran throughout this week, as Fife Ethylene Plant starts up again. Flaring, an essential part of the plant's safety systems, was seen on Monday evening and is expected to continue this week.
Following its annual closure for routine maintenance, ExxonMobil Chemical plant's start-up had to be delayed when a leak was discovered. The leakage caused no risk to the workforce, the community or environment, but a large part of the plant had to be shut down to carry out repairs.
As MRC wrote earlier, on 5, Oct, ExxonMobil Corp. confined a fire that broke out at its Baytown, Texas refinery to a process unit. The complex has a 584,000 bbl/day refinery and two chemical plants that make butyl rubber and polypropylene (PP), making it the largest operating refinery in the U.S. and one of the largest in the world.