Royal Dutch Shell Plc restarted all but one unit over the weekend at its 227,586 barrel per day (bpd) Convent, Louisiana, refinery, sources familiar with plant operations said on Monday. The refinery’s 45,000 bpd heavy-oil hydrocracker remained shut on Monday but is scheduled to start half production by the end of the this week, the sources said. The other half of the unit will undergo a planned, month-long overhaul. The refinery was shut by a fire on the night of Sept. 26 that destroyed the transformer through which all external electrical power is supplied. Shell had been expected to restore production by early this week at the Convent refinery. Shell began restarting the refinery on Saturday, according to energy industry intelligence service Genscape.