HOUSTON, Aug 4 (Reuters) - The 30,000-barrel-per-day (bpd)alkylation unit at BP Plc's 413,500 bpd Whiting, Indiana,refinery malfunctioned on Tuesday morning, trade and industrysources said.
The unit upset triggered the refinery's safety flare systemon Tuesday morning, according to local media reports.
A BP spokesman declined to discuss operations at therefinery. (Reporting by Erwin Seba; Editing by Meredith Mazzilli)