Welding Safety Know The Risks
Posted: Thursday, March 31, 2011
by Timothy Micek
http://www.weldinghelmetboss.com
With out proper knowledge and safety precautions welding can be both dangerous and unhealthy. Most welding processes involve an arc flame, so the risk of facial and flesh burns is very high. Both the eyes and skin can be affected by the bright light and extreme temperature. Most skin burns begin similar to a sunburn, but can get much more serious. Eye burns are much more serious even in the slighter cases of damage. Additionally, the brightness of the weld area can cause flash burns in which ultraviolet light causes inflammation of the cornea and can burn the retinas of the eyes. The risk of blindness is always there if not properly protected. Welding helmets are durable and dependable, the bulk of them protects the face by drastically reducing the amount of exposure.
If not properly shielded, other damage to the eyes can occur such as retinal burns and total loss of vision. Welding helmets are always essential since damage can occur over a relatively short period of time. Arc welding operations are potentially very dangerous. Many health hazards can arise from the emission of electromagnetic waves, namely ultraviolet radiation. Ultraviolet light is the most frequent cause of radiation based eye injuries. In addition to the ultraviolet exposure risk there are other ways in which the eyes can be damaged without proper protection during welding. Such risks are photochemical and thermal damage to the retina. Photochemical damage is a result of exposure to intense blue light. Thermal damage occurs when exposed to visible and near infrared radiation. In all cases, the longer the exposure the greater the damage. Therefore making welding helmets a very important piece of safety equipment.
The newer, electronic models of welding helmets are similar to the older models but with substantial safety and convenience enhancements. For example, all welding helmets include a window filter known as the lens shade. In the older models this window was made of tinted or polarized glass. Thanks to electronic advancements the more modern models use a Liquid Crystal Display (LCD) filter, or shutter, that better adjusts to the bright light. Essentially, the auto darkening lens allows the welder to continue working with adequate vision and normal lighting.
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