A brief power outage early yesterday at Tesoro Corp.’s oil refinery in Campbell Industrial Park resulted in a flaring of gases at the plant, the company said.

“There was no significant impact to the refinery operations, product supply or to the surrounding area as result of the brief flaring. We are looking into the cause of the incident,” Tesoro spokesman Nathan Hokama said in an email.

The flaring was a standard safety precaution while repairs were made, according to Tesoro. Vapors, which are produced during the refining process, were routed to the refinery’s flare unit and burned.

The refinery is Hawaii’s largest, with the capacity to process 93,500 barrels of crude oil a day.