Welder Red Seal · Question
During the welding of stainless steel, the thermal cutting or welding process can produce airborne fumes of what hazardous substance?
Stainless steels contain chromium, which, when heated to high temperatures during welding, can form hexavalent chromium (Cr(VI)), a known carcinogen requiring s
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Question: During the welding of stainless steel, the thermal cutting or welding process can produce airborne fumes of what hazardous substance?
Answer options:
- Lead oxide
- Zinc chloride ✅ Hexavalent chromium
- Manganese dioxide
Correct answer: Hexavalent chromium
Explanation: Stainless steels contain chromium, which, when heated to high temperatures during welding, can form hexavalent chromium (Cr(VI)), a known carcinogen requiring specific ventilation and respiratory controls.
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- A welder is fabricating a pressure vessel component using FCAW-G with an E70T-1 wire. The procedure specifies
- A welder is preparing to weld 20 mm (0.8 in) thick high-strength low-alloy (HSLA) steel using FCAW-G. The weld
- A structural steel fabricator is using FCAW-S (E71T-8 wire) to weld heavy sections of structural steel in an o
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