HOUSTON: Royal Dutch Shell Plc shut the large crude distillation unit (CDU) at its 211,146 barrel-per-day (bpd) Convent, Louisiana, refinery on Tuesday as part of the permanent closure of the refinery, said sources familiar with plant operations.

The 130,000-bpd CDU is among the last units being shut this week at the Convent refinery, the sources said.