You are the lead incident commander for a hazardous materials incident similar to those that have been introduced in this course. In this scenario,

diisocyanates [toluene diisocyanate (TDI) and methylene diphenyl diisocyanate (MDI)] are being unloaded at the tank farm of HLF Polyurethane Manufacturing.

TDI and MDI are used as raw materials in the production of polyurethane. During the unloading process, the vapor return line ruptured and caught fire due to a

nearby welding operation that provided the ignition source.

a.Explain how the lead incident commander should respond to this incident based on the Emergency Response Guidebook (ERG). Click the link below to access the

ERG at the Pipeline and Hazardous Materials Safety Administration website:

b.Identify all hazardous materials involved, their classifications and their physical properties.

c.Discuss chemical incompatibility and interactions relevant to this incident.

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