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Occupational Exposure to Solar Ultraviolet Radiation of Polish Outdoor Workers: Risk Estimation Method and Criterion

This paper presents occupational skin exposure to solar ultraviolet radiation (UVR) of 122 Polish outdoor workers in spring and summer. In 65% of the cases, it was significant and exceeded 10 standard erythema doses (SED) during a work shift. The results provided grounds for (a) modifying hazard assessment based on the skin exposure factor proposed by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and (b) developing a criterion of risk estimation. The modified method uses the UV index (UVI) instead of the geographical latitude and season factor. The skin exposure factor (Wes) of one is the criterion of risk estimation. Risk is low if the estimated value of Wes does not exceed one. If it does, suitable preventive measures are necessary and a corrected skin exposure factor (Wes*) is calculated to minimize its value to at least one. Risk estimated with that method was high in 67% of the cases.