Shortly after talks between union and oil company representatives ended on Friday night, the union notified Motiva Enterprises [MOTIV.UL] of a strike by its members at the company’s 600,250 barrel per day (bpd) refinery in Port Arthur, Texas. The USW also gave notices on Friday of strikes to begin in 24 hours at Motiva’s 235,000 bpd Convent, Louisiana and 238,000 bpd Norco, Louisiana refineries and the Shell Oil Co chemical plant in Norco, the union said.