Which safety hazard is most likely to increase when welding in a confined, poorly ventilated space?

• Burns

• Radiation exposure

• Toxic fume accumulation

• Electric shock

If a welder fails to wear proper helmet shade, which radiation risk is being ignored?

• UV-induced welder’s flash

• IR-related heat burns

• Ozone inhalation

• Electrical short

Analyzing the “Rule of Nines,” why is it essential in welding accident response?

• It identifies PPE requirements

• It estimates fluid loss for burns

• It measures electrode current settings

• It determines arc voltage

Which hazard is amplified most when welding near water?

• Heat burns

• Fire risk

• Electric shock

• Fume inhalation

Comparing fire extinguishers, which would be least effective in an electrical welding fire?

• Class A

• Class B

• Class C

• Multi-purpose

Which scenario best illustrates the fire triangle in welding?

• Arc radiation + helmet shade + eye protection

• Sparks + oil on floor + oxygen in air

• Current path + human body + shock hazard

• Weld fumes + weak ventilation + lung irritation

Why must welding cables be inspected before use?

• To prevent porosity

• To avoid electrical hazards

• To improve arc stability

• To maintain bead shape

If a worker experiences sudden eye pain after welding, which cause-and-effect sequence is correct?

• IR radiation → skin burns

• UV radiation → arc eye

• Fumes → dizziness

• Electric shock → burns

Why does grounding equipment reduce electric shock risk?

• Provides alternate current path

• Increases electrode penetration

• Enhances metal fusion

• Controls weld pool cooling

Which safety control directly addresses fume inhalation hazards?

• Insulated gloves

• Fire extinguishers

• Ventilation systems

• Helmet shade