Sept 16 (Reuters) - Royal Dutch Shell Plc said itinitiated maintenance at its 156,400 barrel-per-day refinery inMartinez, California, on Sept. 11.
The company did not specify the units involved or theduration of the work.
It had reported maintenance on an unspecified unit in anotice with the Contra Costa Health Services. (Reporting by Shruti Chaturvedi in Bangalore; Editing by PhilBerlowitz)