HOUSTON, Nov 4 (Reuters) - The largest crude distillationunit and coker were unaffected by a malfunction that triggeredflaring on Wednesday at BP Plc's 413,500 barrel per day(bpd) Whiting, Indiana, refinery, said sources familiar withplant operations.
The 250,000 bpd CDU, called Pipestill 12, and the 102,000bpd coking unit have remained in operation while the flaring wastaking place, the sources said. The malfunction is expected toend Wednesday afternoon.
Energy industry intelligence service Genscape said theflaring began shortly after 11 a.m. local time (1700 GMT) fromthe refinery's south flare, which is associated with Pipestill12, the coker, a sulfur plant and a vapor recovery unit. (Reporting by Erwin Seba; Editing by Diane Craft)