Part 2 WEEKLY PERSONAL NOISE EXPOSURE LEVELSI1I2

The weekly personal noise exposure, L_EP,w , which corresponds to

$${\overline{L}}_{EX,8h}$$

defined in international standard ISO 1999: 1990 clause 3.6 (note 2) for a nominal week of five working days, is expressed in decibels and is ascertained using the formula:

$$L_{EP,w}=10{log}_{10}\left[\genfrac{}{}{0.1ex}{}{1}{5}\sum _{i=l}^{i=m}{10}^{0.1{\left(L_{EP,d}\right)}_i}\right]$$

where—

• m is the number of working days on which the person is exposed to noise during a week; and (L_EP,d)_i is the L_EP,d for the working day i.