A potential source of poisonous chemical fumes when welding is which of the following?

A potential source of poisonous chemical fumes when welding is which of the following?

• A. Inert shielding gases
• B. Chlorinated degreasing solvents
• C. Carbon dioxide extinguishers
• D. Anti-spatter nozzle sprays

Answer: (B)

When welding, any cleaning solvents on the metal surface can be heated and break down into toxic fumes. Chlorinated degreasing solvents are notorious for producing poisonous gases, such as phosgene, when exposed to heat. That makes them a primary source of hazardous welding fumes. Inert shielding gases themselves are nonreactive and not a source of fumes, carbon dioxide extinguishers release CO2 which isn’t a welding fume byproduct, and anti-spatter nozzle sprays are used to reduce splatter and may contain solvents but are not the classic source of poisonous fumes like heated chlorinated cleaners.

When welding, any cleaning solvents on the metal surface can be heated and break down into toxic fumes. Chlorinated degreasing solvents are notorious for producing poisonous gases, such as phosgene, when exposed to heat. That makes them a primary source of hazardous welding fumes. Inert shielding gases themselves are nonreactive and not a source of fumes, carbon dioxide extinguishers release CO2 which isn’t a welding fume byproduct, and anti-spatter nozzle sprays are used to reduce splatter and may contain solvents but are not the classic source of poisonous fumes like heated chlorinated cleaners.