Module 9: Control Techniques - International Association of Fire ...

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IAFF Training for Hazardous Materials: Technician© Student Text Approximately four hours after the first response, the scene was secured. Police and Marshals would continue the investigation to find out if it was a simple mistake that put the dangerous cargo there or a malicious act. © Emergency Response & Research Institute, 1995, All Rights Reserved Questions 1. Refer to your NIOSH Pocket Guide and list additional hazards of aluminum powder. 2. If you had a leaking container of aluminum powder, how would you patch/plug and overpack it using the supplies in your own department? 3. What precautions should you take when patching/plugging and overpacking? 4. In this incident, fire fighters took samples from the drum. Are you equipped and trained to take samples? If so, describe how this procedure is done. 9-78 Module 9: Control Techniques
Student Text IAFF Training for Hazardous Materials: Technician© Cargo Tank Leak Activity 3 A semiconductor manufacturer (the shipper) hired a cargo tank from a chemical waste management company (the carrier) to transport a waste acid mixture to a disposal site some distance away. Because the carrier and shipper had done business in the past, the carrier’s dispatcher assigned the same type of cargo tank that had been previously used for that shipper. When the driver arrived at the shipper’s location, mixed acid waste from two storage locations was loaded into the cargo tank. The shipping papers described the cargo as “waste, acid liquid n.o.s.” (UN 1760). While in transit, the driver had mechanical difficulties and was directed to go to the nearest truck dealer for repairs. The driver parked the cargo tank in the dealer’s back lot and detached it from the tractor. Shortly thereafter, employees at the dealership noticed orange vapors escaping from the tank. However, no one notified the fire department until two hours later. When the fire department finally arrived, fire fighters evacuated the area and attempted to identify the components of the mixed acid waste. The shipper and the carrier provided conflicting information as to the specific chemicals in the mixture. Meanwhile, vapors continued to escape from the tank, and the tank shell became very hot. Although the vapors and the tank temperature were reduced with a water spray, the acid mixture eventually eroded the shell and began to drain. Questions 1. What can you do when you have conflicting information about a chemical, particularly chemical mixtures? 2. What control actions would you take? 3. How could the situation have been prevented? Module 9: Control Techniques 9-79
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