[Guiding values in mechanical vibration risk assessment]
I valori guida nella valutazione del rischio da vibrazioni meccaniche
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In this study, the daily exposure action values (EAV) and the daily exposure limit values (ELV) for hand-transmitted vibration (HTV) and whole-body vibration (WBV), established by the EU Directive 2002/44/EC and the Italian Decree 81/2008, and expressed in terms of 8-hr frequency weighted r.m.s. acceleration magnitude, are discussed upon consideration of the findings of experimental and epidemiological studies. There is some epidemiological support for the EAV A(8) of 2.5 ms–2 r.m.s. and the ELV A(8) of 5 ms–2 r.m.s. for HTV, at least for the vascular component (secondary Raynaud's phenomenon) of the hand-arm vibration syndrome. There is some experimental evidence for the EAV A(8) of 0.5 ms–2 r.m.s. for WBV, while there is neither biodynamic nor epidemiological validation for the ELV A(8) of 1.15 ms–2 r.m.s. for WBV, this latter lowered to 1 –2 r.m.s. in the Italian legislation.
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