One benefit of using thoriated tungsten electrodes is that they require a much lower temperature for welding than pure tungsten. This means that exposure occurs at a relatively slow rate. Still, exposure must be limited.

It is possible to minimize hazards by using thorium-free tungsten electrodes when possible. The American Welding Society (2003) lists cerium, lanthanum, yttrium, and zirconium as possible alternatives to the radioactive thorium. A second line of defense listed by the American Welding Society (2003) is the installation of an effective dust collection system as well as an effective ventilation system. Of course, training and intelligent storage of thorium are also crucial workplace safety measures. Dust generated by grinding should also be collected and properly disposed of, in accordance with local, state and federal regulations (American Welding Society 2003). When adequate precautions and controls are taken, the ill effects of thoriated tungsten electrodes are likely to be...
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