UPDATE 1-LA gasoline jumps on shut Chevron refinery FCC-trade

* Gasoline rises as much as 17 cts on shutdown
* Chevron declines to discuss El Segundo refinery ops

Oct 27 (Reuters) - Wholesale gasoline differentials climbed
as much as 17 cents a gallon in the Los Angeles market on
Thursday morning, on talk of a shut gasoline production unit at
California's largest refinery, traders said.
A gasoline-producing fluidic catalytic cracking unit was
shutting down on Wednesday at Chevron Corp's
273,000-barrel-per-day (bpd) Los Angeles-area refinery in El
Segundo, California, traders said.
A Chevron spokesman declined to discuss operations at the
El Segundo refinery.
Repairs on the 73,800-bpd FCC are expected to begin this
weekend and last between three and four weeks, the dealers
said.
Gasoline blended to meet California's strict environmental
standards traded as high as 35 cents a gallon over NYMEX
December RBOB gasoline on news of the upcoming shutdown.
California gasoline later retreated to 28 cents over, 10
cents above where it finished on Wednesday.