Which percent of ultraviolet rays does a welding helmet remove?

Prepare for the California Welding Contractor Exam (C-60 License) with flashcards and multiple choice questions, each including hints and explanations. Get exam-ready!

Multiple Choice

Which percent of ultraviolet rays does a welding helmet remove?

Explanation:
Welding helmet filters are built to shield your eyes from ultraviolet radiation emitted by the arc. The filters are designed to block essentially all UV light, which is why the typical protection figure is around 99.75% (nearly all UV is removed). This level of blocking helps prevent photokeratitis and other UV-related eye injuries even with close, continuous exposure while welding. The other percentages are too low to provide adequate protection, since letting more UV through increases the risk of eye damage.

Welding helmet filters are built to shield your eyes from ultraviolet radiation emitted by the arc. The filters are designed to block essentially all UV light, which is why the typical protection figure is around 99.75% (nearly all UV is removed). This level of blocking helps prevent photokeratitis and other UV-related eye injuries even with close, continuous exposure while welding. The other percentages are too low to provide adequate protection, since letting more UV through increases the risk of eye damage.

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