A parallel between the seven measurement methods of vibration transmitted to the hand-arm sistem

Résumé

In the case of workers performing a series of activities involving the use of equipment that transmit vibrations to the hands, there is a risk of getting sick. In this paper, we will calculate the daily exposure for a worker who uses for the same operation, in 2 different days: i) angular grinder, angular milling machine and hammer-chisel, from certain manufacturers; ii) same tools from other manufacturers. The methods of calculating daily exposure are: a) Calculation of daily exposure using partial vibration exposures and the duration of each source; b) The ”traffic light” system; c) Daily exposure graph; d) Exposure points system; e) Nomogram of daily exposure; f) Calculation of daily exposure using exposure points; g) Methods that use the Internet. After performing all the calculations, it was found that the fastest and most accurate method is the one that uses the Internet: "Hand-arm vibration exposure calculator", because it instantly gives all values of interest.