For cutting operations with exothermic devices what shade rating should be used?

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Multiple Choice

For cutting operations with exothermic devices what shade rating should be used?

Explanation:
Shade selection for eye protection is about how much radiant energy the process emits. Exothermic cutting produces a very bright flame with substantial UV/IR radiation, so you need a darker lens to shield the eyes. A shade rating of five provides enough attenuation to prevent eye injury while still letting you see the work adequately. Lighter shades—two, three, or four—would transmit too much light and increase the risk of flash burns. Therefore, use a shade rating of five.

Shade selection for eye protection is about how much radiant energy the process emits. Exothermic cutting produces a very bright flame with substantial UV/IR radiation, so you need a darker lens to shield the eyes. A shade rating of five provides enough attenuation to prevent eye injury while still letting you see the work adequately. Lighter shades—two, three, or four—would transmit too much light and increase the risk of flash burns. Therefore, use a shade rating of five.

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