Paragraph 1 I1I2

The daily personal noise exposure level L_EP,d , which corresponds to L_EX, _{8 h} defined in international standard ISO 1999: 1990 clause 3.6, is expressed in decibels and is ascertained using the formula:

$$L_{EP,d}=L_{Aeq,T_e}+10{log}_{10}\left(\genfrac{}{}{0.1ex}{}{T_e}{T_0}\right)$$

where—

• T_e is the duration of the person’s working day, in seconds;

• T ₀ is 28,800 seconds (8 hours); and

• L_Aeq,Te is the equivalent continuous A-weighted sound pressure level, as defined in ISO 1999: 1990 clause 3.5, in decibels, that represents the sound the person is exposed to during the working day.