See instructions below


For this assignment, 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.

The following actions were

initially taken:

  • The evacuation alarm was sounded and the facility emergency response team
    (ERT) was activated.
  • The plant manager and the local fire department were notified of the
  • The incident command was established at the facility office near the main
    access gate to the south (this is the
    furthest distance within the property
    boundary from the incident location).
  • The incident commander implemented actions required under the approved
    emergency response plan.
  • The ERT was not able to immediately isolate the source of the
  • The fire department arrived on location and assumed the incident command
    of the event.


Relevant Information:

  • The facility encompasses an area measuring 2000 feet by 1400 feet.
  • The nearest residential community is located approximately 1000 feet to
    the northeast.
  • A plastic recycling plant is located along the south fence boundary of the
  • A major interstate highway runs directly parallel to the plant.
  • The ambient temperature on the day of the incident was 85° F and the wind
    was blowing at 7 mph from the southwest to
    the northeast.
  • The facility has a trained ERT that can respond to

Your essay must address the following:

  • Identify all hazardous materials involved, their classifications and their
    physical properties.
  • Discuss chemical incompatibility and interactions relevant to this
  • 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:

Pipeline and Hazardous Materials Safety
Administration. (n.d.). Emergency Response Guidebook (ERG). Retrieved

  • Explain the corrective action plan that should be implemented to prevent a
    reoccurrence of this event.


response must be at least one page in length (not counting the cover

page or reference page). All sources used, including the textbook, must

be referenced. Paraphrased and quoted materials must have accompanying

in-text and reference citations in APA format.

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