(Adds company says unit upset was at chemical plant)
July 5 (Reuters) - Shell Oil Co said its Deer Park,Texas, chemical plant experienced a unit upset on Wednesday.
Shell reported a unit upset in a notice filed with the U.S.National Response Center.
The plant houses a 327,000 barrel-per-day (bpd) refinery andthe chemical plant. The Deer Park refinery is a joint venturebetween Shell and Mexico's national oil company Pemex.
(Source: http://www.nrc.uscg.mil/reports/rwservlet?standard_web+inc_seq=1052716)
(For refinery outages in the Reuters OilFundamentalsDatabase see http://bond.views.session.rservices.com/CE/ or go to ) (Reporting by Shrutee Sarkar and NR Sethuraman in Bangalore)