Phillips 66 (PSX) 355,000-bpd refinery in Roxana, Illinois, having issues with catalytic cracker unit, according to reports, citing sources

Unplanned issues at a catalytic cracker are the single most consequential type of refinery disruption for product markets, because the FCC is the unit that upgrades heavy feed into gasoline, and its loss removes conversion capacity that lighter distillation problems do not. The Wood River complex at Roxana is a large Midcontinent refinery tied into the Cushing and Chicago-area product complex, so episodes of this kind have historically shown up first in PADD II gasoline cracks and Chicago basis rather than in crude, with the regional gasoline spread versus Gulf Coast markers the cleanest expression of the outage. Crude itself tends to move the other way at the margin, since a down unit frees up feedstock and can soften local crude differentials even as products strengthen. The distinction worth drawing is between a minor unit issue, which trade coverage resolves within a session, and a forced shutdown with a restart timeline, which is what has historically sustained crack widening; official confirmation, the duration language, and any notice of reduced runs to pipeline shippers are the follow-ons that separate the two. Source-attributed reports of this kind sometimes precede company acknowledgment by hours or days, and past episodes have occasionally been walked back to routine flaring, so the next tell is whether the operator confirms a unit trip or characterises it as normal operations.