Black light, with a proper functioning filter in place, used for fluorescent penetrant inspection can cause permanent damage to

Black light, with a proper functioning filter in place, used for fluorescent penetrant inspection can cause permanent damage to

• A. Eyes
• B. Skin
• C. Retina
• D. None of the above

Answer: (D)

The important idea is that a properly functioning filter on the UV source used for fluorescent penetrant inspection blocks the harmful ultraviolet radiation while still allowing you to see the fluorescence. When you follow safe practices and use the filter, the exposure to eyes and skin is minimized to safe levels, so there is no permanent damage to the eyes or retina simply from the light. The answer reflects that, under normal, correctly filtered operation, none of those tissues would be permanently harmed. Only if the filter failed or was bypassed would the risk be present.

The important idea is that a properly functioning filter on the UV source used for fluorescent penetrant inspection blocks the harmful ultraviolet radiation while still allowing you to see the fluorescence. When you follow safe practices and use the filter, the exposure to eyes and skin is minimized to safe levels, so there is no permanent damage to the eyes or retina simply from the light. The answer reflects that, under normal, correctly filtered operation, none of those tissues would be permanently harmed. Only if the filter failed or was bypassed would the risk be present.