The sole crude distillation unit at Chevron Corp’s large Richmond, CA, refinery could be down for up to six months after last week’s fire, industry intelligence group IIR Energy said in a report that suggests the outage may be twice as long as feared.
Investigators have found “extensive damage” in the cooling towers, pipe racks and heater tower, IIR Energy said.
Neither Chevron nor investigators have given any timeline for resuming full operations at the 245,000-barrel-per-day plant, California’s second largest, following an Aug. 6 fire at its crude unit that caused a spike in regional gasoline prices.
A Chevron spokesman said the No. 4 crude oil unit — the only one at the plant — remained shut down while other parts of the plant were operating.
Sources at the refinery said last week the unit could be down for up to three months. The fire erupted at a pump leaking a substance similar to diesel, according to a preliminary report the company filed with county pollution regulators last week.
IIR Energy, which employees hundreds of researchers to gather operational information, first hand, about industrial facilities across the world, said Chevron had not yet decided whether it would continue to operate some secondary units that are running down on-hand feedstock inventories.
Chevron could buy intermediate feed from the market, although in most cases it is difficult for a refiner that has shut down its crude unit to secure enough of this type of oil to keep producing motor fuels at the same rate. Last week, the plant was producing gasoline at over 50 percent capacity, sources said.
The fire damaged the only atmospheric tower on the CDU, the unit that begins converting crude oil to motor fuel. The CDU makes feedstock for all other units at the refinery.
The blaze broke out as workers and the refinery’s fire department were evaluating a leak at the pump.