(Reuters) - Royal Dutch Shell <RDSa.L> reported restarting an unspecified unit at its Scotford, Alberta, facility on Monday, according to a community information line.
There may be intermittent flaring for the next 12 hours, the message added.
The Scotford facility houses a 100,000-barrel-per-day refinery and a 255,000-barrel-per-day oil sands upgrader.
(Reporting by Apeksha Nair in Bengaluru; Editing by Sherry Jacob-Phillips)