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18 Cards in this Set
- Front
- Back
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Sources of UV Radiation
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Sun, high and low pressure mercury discharge lamps, & plasma torches and welding arcs
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UVA
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Long wave; damage the skin first, contribute to premature aging of the skin and eye damage
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UVB
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Middle wave; most dangerous type of UV exposure, responsible for sunburn, suntan, skin aging, skin cancer, & eye damage
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UVC
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Short wave; controls the growth of bacteria, mildew, algae, and slime
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Sun
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Source of naturally occuring UV radiation in the environment
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High and Low pressure mercury discharge lamps
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Used to assist with drying during painting operations
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Plasma torches and welding arcs
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Usually found in industrial settings and in shops such as Aircraft Metals and Transportation
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Skin
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The principle organ of concern from UV radiation exposure
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Wavelength above 0.3 micrometers and non-pigmented people are more susceptible
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Depth of UV penetration is based on two key factors
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Immediate effects of exposure to UV radiation
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Erythema, Increased pigmentation, darkening of pigment, and changes in cellular growth
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Erythema
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Reddening of the skin
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Changes in cellular growth
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i.e., Cancer is a possibility (tumors)
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Photokeratitis
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Reversible sunburn to the cornea caused by overexposure to UVB rays
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Sources of IR Radiation
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Any source that generates heat
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Eyes and skin
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IR radiation exposure can potentially have biological effects on the _________.
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UV meter card
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Designed with a UV-sensitive strip that changes from white to purple when exposed to UV radiation for 20 seconds. Designed to react to 290-325 nm.
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SUNMATE
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Gives instant UV intensity readings and identifies whether it is UVA, UVB, or UVC.
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UV/IR Controls
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Eyeglasses, goggles, and/or plastic face shields; protective clothing; sunscreen; short durations of exposure; welding helmets/goggles (special lens); welding curtains; and time, distance, shielding
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