UPDATE 2-Three Utah refineries restart after power outage

* Silver Eagle refinery blast triggered brief power outage

* Chevron, Holly, Flying J refineries restarting

* Tesoro refinery operating normally

(Updates with further Tesoro statement, Holly output)

HOUSTON, Nov 4 (Reuters) - The Chevron Corp (CVX.N: Quote, Profile, Research), Holly Corp (HOC.N: Quote, Profile, Research) and Flying J refineries near Salt Lake City, Utah, were restarting units after a brief power outage knocked all or parts of the plants offline on Wednesday morning, the companies said.

The power outage occurred after an explosion at the Silver Eagle refinery in Woods Cross, Utah, about 10 miles (16 km) north of Salt Lake City. No one was injured. [ID:nN0426833]

Only Tesoro Corp's (TSO.N: Quote, Profile, Research) 60,000 barrel-per-day (bpd) refinery in Salt Lake City experienced no interruptions.

"We have had no operational issues at the refinery," said Tesoro spokesman Lynn Westfall.

Chevron Corp's 45,000-bpd Salt Lake City refinery "did have some units go offline," said refinery manager Mark Sullivan, who declined to identify the units. The refinery was restarting using normal procedures.