0617 GMT December 15, 2019
Director of the complex Mohammad Reza Karam said on Saturday that the fire has left no casualties, Tasnim News Agency reported.
Following the successful operation to contain the fire, the complex resumed producing linear alkylbenzene (LAB) after an hours-long hiatus, he added.
Firefighters from Kermanshah and other nearby provinces put out the fire at around 7 p.m. local time on Friday.
Located 15km east of Kermanshah, Bistoon Petrochemical Complex produces LAB and heavy alkyl benzene (HAB).
Preliminary indications suggested that a fault in the electrical system may have caused the incident.
The fire came only 20 days after an inferno broke out at Bou Ali Sina Petrochemical Complex in Mahshahr and raged at a giant storage tank for more than two days.