General Contractor Practice Exam 2025 – All-in-One Guide to Exam Success!

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What is a significant risk when welding galvanized steel?

Fire hazards

Electrical shock

Poisonous fumes

Welding galvanized steel presents a significant risk due to the generation of poisonous fumes. Galvanized steel is coated with zinc to provide corrosion resistance, and when this material is heated during the welding process, the zinc can vaporize. This vaporized zinc can lead to the production of zinc oxide fumes, which are harmful when inhaled. Breathing in these fumes can cause a condition known as "metal fume fever," characterized by symptoms similar to the flu, such as fever, chills, and a metallic taste in the mouth.

Understanding this risk underlines the importance of implementing proper ventilation and using appropriate respiratory protective equipment when welding galvanized steel to ensure the safety of workers in the vicinity.

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