Most U.S. refiners with plants in the path of Tropical Storm Barry took steps on Friday to keep them running, as the second named storm of the season strengthened and was projected to become a hurricane this weekend. Exxon Mobil Corp ( XOM.N ) plans to run its 502,500 barrel-per-day (bpd) Baton Rouge, Louisiana, refinery through Barry’s expected slow move across the state this weekend, said sources familiar with plant operations. Royal Dutch Shell Plc’s ( RDSa.L ) refineries in Norco and Convent, Louisiana, also plan to remain in operation as the state is drenched with as much as 2 feet (61 cm) of rain, sources familiar with operations at those plants said. Exxon is taking steps to minimize the risk of heavy rain […]