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Safety and Equipment Setup Flashcards

7 cards from real Certified Welder practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Safety and Equipment Setup flashcards as text

  1. When welding overhead, which additional PPE beyond standard helmet and gloves is most critical?

    Answer: Leather cape and sleeves to prevent burn from falling spatter

    Overhead welding causes hot spatter and slag to fall toward the welder, making full leather cape and sleeve coverage essential.

  2. What is the proper procedure for purging oxygen from a TIG welding argon gas line before starting an aluminum weld?

    Answer: Open the torch valve fully for 30 seconds before striking an arc

    Pre-flow purging the argon line for 20–30 seconds clears residual oxygen and moisture that would contaminate the tungsten and weld pool.

  3. Which hazard is associated with welding near degreasing solvents containing chlorinated hydrocarbons like trichloroethylene?

    Answer: Formation of phosgene, a toxic gas

    UV radiation from the welding arc can convert chlorinated solvents into phosgene gas, which is extremely toxic even in small concentrations.

  4. What is the correct polarity setting for SMAW welding with most general-purpose electrodes such as E6010 and E7018?

    Answer: DC Electrode Positive (DCEP)

    E6010 and E7018 electrodes are designed for DCEP (reverse polarity), which provides deeper penetration and better arc stability.

  5. According to ANSI Z49.1, what minimum ventilation rate is required for welding in a confined space without mechanical ventilation?

    Answer: No welding is permitted in confined spaces without mechanical ventilation

    ANSI Z49.1 prohibits welding in confined spaces without mechanical ventilation due to the risk of oxygen depletion and toxic fume accumulation.

  6. What is the purpose of using a drag shield or trailing shield when welding titanium?

    Answer: To extend shielding gas coverage and protect the hot weld from atmospheric contamination

    Titanium reacts with oxygen and nitrogen at elevated temperatures, so a trailing shield extends inert gas coverage until the weld cools below ~800°F.

  7. When inspecting a welding helmet auto-darkening filter (ADF) before use, what is the most important functional test?

    Answer: Verify the lens darkens quickly when exposed to a bright light source

    The switching speed and darkening response of an ADF must be verified before welding to ensure it activates before the arc strikes the retina.