Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
IRATA International code of practice for industrial rope access Part 3 of 5: Informative annexes: Annex O: Protecting rope access technicians against environmental conditionsc)UVC covers the wavelength range 100 to 280 nm. UVC is the most dangerous form of UV radiation but generally does not pose a risk to rope access technicians, because the rays are absorbed by the ozone layer. However, artificial UVC (e.g. that emitted by electrical discharges) is a threat for certain groups of workers, e.g. welders.O.5.2.1.3 UV rays can penetrate and change the structure of skin cells. UVA penetrates beyond the top layer of human skin and is known to cause premature skin ageing. Scientists believe that UVA radiation can increase the risk of developing skin cancer. UVB radiation, which causes sunburn, penetrates less deeply into skin than UVA radiation, but can still cause some forms of skin cancer.O.5.2.2Ozone layer