Monday, April 13, 2020 Loose valve caused February ExxonMobil fire By Daily Report Staff - April 13, 2020 FacebookTwitterLinkedinEmailPrint A loose valve is to blame for causing the fire at ExxonMobil’s north Baton Rouge refinery in February, WAFB-TV reports. An investigation into the fire, which emitted thousands of pounds of sulf… Already an INSIDER? Sign in.