UPDATE 1-Upset at Chevron Calif. refinery; not shut -county

* Refinery had upset, not shut down

* Regulatory filing erroneously suggested shutdown
(Adds company comment, refinery output)

HOUSTON, Dec 28 (BestGrowthStock) – Chevron Corp’s (CVX.N: ) refinery
in Richmond, California, had a brief upset but was not shut
down on Tuesday, contrary to information in a state filing, the
source of the report said.

“The entire plant is not shut down,” a spokeswoman for the
Contra Costa County Health Services Department said. “It was an
upset. They were back (in full operation) in 15 minutes.”

Chevron spokesman Brent Tippin declined to comment, except
to say the plant was continuing to provide products to
customers “with no interruptions.”

A filing with California emergency management early on
Tuesday had suggested the entire 245,271-barrel-per-day plant
had shut down after a sulfur dioxide release.
(Reporting by Bruce Nichols and Kristen Hays; Editing by
Walter Bagley)

UPDATE 1-Upset at Chevron Calif. refinery; not shut -county