At 10:00 a.m. on November 13, 2024, Employee #1 (23) was inside a large section of HVAC duct applying Design Polymerics DP 2590 Duct Liner Spray Adhesive to repair sagging insulation. After completing the adhesive application, Employee #1 used a pin welder to secure the insulation. While using the welder, a spark ignited flammable vapors from the adhesive, causing a flash fire inside the duct.
