Phillips Ferndale refinery reports flaring -filing

HOUSTON, June 17 Sun Jun 17, 2012 5:37pm EDT

HOUSTON, June 17 (Reuters) - Phillips 66's 100,000 barrel per day (bpd) Ferndale, Washington, refinery reported flaring on Friday, according to a notice filed with the U.S. National Response Center.

The cause of the flaring, which released sulfur dioxide was unknown, according to the notice.

A refinery's safety flare system is used when refinery production units cannot process hydrocarbons normally.