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Welder Safety & Compliance Flashcards

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

Read the first 7 Welder Safety & Compliance flashcards as text

  1. What is the primary purpose of a fire watch during and after welding operations?

    Answer: To detect and extinguish fires that may start from sparks or slag

    A fire watch monitors the work area for fires caused by sparks or slag during welding and for a minimum of 30 minutes after hot work ends, as required by OSHA 1910.252.

  2. Which welding lens shade is generally recommended for SMAW (stick) welding at 200–250 amperes per ANSI Z87.1?

    Answer: Shade 12

    ANSI Z87.1 and AWS F2.2 recommend shade 12 for SMAW operations in the 200–250 ampere range to adequately protect against arc radiation.

  3. Which of the following best describes the lockout/tagout (LOTO) requirement before performing maintenance on a welding machine?

    Answer: De-energize the machine, lock the energy source, and verify zero energy state

    OSHA 29 CFR 1910.147 requires that energy sources be isolated, locked out with a personal lock, and verified to be in a zero-energy state before any maintenance or servicing begins.

  4. Hexavalent chromium (Cr(VI)) is a known carcinogen produced when welding which base metals?

    Answer: Stainless steel and chrome-containing alloys

    Welding stainless steel and other chromium-containing alloys generates hexavalent chromium fumes, which OSHA regulates with a permissible exposure limit (PEL) of 5 µg/m³ as an 8-hour TWA.

  5. What minimum shade number does OSHA require for filter lenses used in oxygen-fuel gas cutting operations with heavy cutting (tip size 6 and above)?

    Answer: Shade 6

    OSHA Table E-2 in 1910.252 recommends shade 6 as the minimum for heavy oxygen-fuel gas cutting operations using large tip sizes.

  6. A welder notices a hissing sound and frost forming on an oxygen cylinder valve. What is the correct immediate action?

    Answer: Close the valve immediately, remove the cylinder to open air, and notify the supplier

    A leaking oxygen cylinder must have its valve closed immediately; the cylinder should be moved outdoors away from ignition sources and the gas supplier notified — never attempt to repair a leaking cylinder valve.

  7. Under AWS D1.1 safety provisions, what minimum distance must be maintained between gas cylinders and actual welding or cutting operations?

    Answer: 10 feet

    AWS and OSHA 1910.253 require that fuel gas and oxygen cylinders be kept at least 20 feet from welding operations or separated by a 5-foot-high noncombustible barrier with a fire resistance rating of at least 30 minutes.