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The paper presents the assessment of ultraviolet radiation from technical sources. It has been determined that the intensity of UVA radiation is about 10 times higher than the intensity of radiation of UVB. It has been investigated that the intensity of UV radiation during the welding process nonlinearly depends on the strength of the current, namely, if the strength of the current is reduced by 60%, the intensity of UV radiation is reduced by 20%, it also depends on the distance from the source, namely, if the distance is increased 10 times, the intensity of UV radiation is reduced about 25 times. The dose of UVA and UVB radiation from various resources is calculated. Comparison with the minimum erythema dose is submitted. It has been obtained that when the strength of the current is 315 A, the UV radiation dose exceeds 1 MED, namely, UVA ∼ 3000, UVB ∼300 times. After having carried out the experiment it has been found that the UV radiation emitted from a welder comprises about 80% of UVA, and a...

journal of environmental engineering and landscape management

ASSESSMENT OF ULTRAVIOLET (UV) RADIATION FROM TECHNICAL SOURCES/DIRBTINIŲ ŠALTINIŲ SKLEIDŽIAMOS UVA IR UVB SPINDULIUOTĖS ĮVERTINIMAS/ОПРЕДЕЛЕНИЕ УФА- И УФБ-ИЗЛУЧЕНИЙ ОТ ТЕХНОГЕННЫХ ИСТОЧНИКОВ