April 15 (Reuters) - Shell Oil Co reported plannedmaintenance was underway at its plant in Deer Park, Texas,according to a message posted on a community information line.
The maintenance activity might cause flaring, it said.
The facility houses a 327,000 barrel-per-day (bpd) refineryand a chemical plant.
It was not immediately clear whether the maintenance wasunderway at the chemical plant or the refinery.
The Deer Park refinery is a 50-50 joint venture betweenShell and Mexico's national oil company Pemex.
(For refinery outages in the Reuters OilFundamentalsDatabase see http://bond.views.session.rservices.com/CE/ or go to ) (Reporting by Anupam Chatterjee in Bangalore. Editing by AndreGrenon)