One of the largest US refineries has gone offline after an explosion and fire struck a key processing unit late Monday evening
Operations at Valero Energy’s Port Arthur refinery in Texas have been brought to a halt following an explosion and fire that broke out on Monday evening, according to Ship & Bunker. The incident has taken offline one of the largest refining facilities in the United States, with a processing capacity of 380,000 barrels per day.
What Happened
According to Reuters, as cited by Ship & Bunker, the shutdown was triggered by an explosion and fire within the refinery’s diesel hydrotreater unit. Sources familiar with the facility’s operations told Reuters that the blast occurred at approximately 7:30 PM local time on Monday.
Impact on Bunker Supply
The Port Arthur refinery holds particular importance for the marine fuels sector. Ship & Bunker notes that the facility is a significant supplier of Very Low Sulphur Fuel Oil (VLSFO) and other marine fuel grades to the US Gulf bunker market, meaning the outage could translate into tighter availability for vessels calling at regional ports.
The timing compounds an already difficult environment for global refined products markets. As Ship & Bunker reports, markets are already under considerable strain as a result of ongoing conflict in the Middle East, and the loss of additional US Gulf refining capacity adds further pressure to an already stretched supply picture.
Bunker Price Context
Ship & Bunker data indicates that VLSFO prices in Houston have risen by $313.50 per metric ton since the end of February — a notable increase, though still well behind the $464.50 per metric ton surge recorded in Singapore over the same period. The publication notes that US Gulf prices have, up to this point, been somewhat insulated from the sharper spikes seen elsewhere following strikes on Iran at the end of last month. The Port Arthur incident may narrow that gap.
Gulf Bunkering does not provide operational or security guidance. This article is for informational purposes only. Operators should consult flag state authorities, P&I clubs, and relevant advisories for decisions relating to transit planning.
Sources: Ship & Bunker, Reuters (as cited by Ship & Bunker)


