Regulations regarding the use of hearing protection vary by country. In nations such as Spain, the use of hearing protection devices is mandatory in work environments where the equivalent continuous level exceeds 85 dB(A) or noise peaks greater than 137 dB are recorded.
Furthermore, the use of hearing protection is recommended in all work areas where 80 dB(A) is exceeded , or peaks of 135 dB are observed.
In special operations that involve significant noise levels, even if they do not exceed 87 dB(A) or 140 dB of equivalent continuous level or peaks, the use of hearing aids is encouraged, especially those of short duration that can be considered harmful. minor importance.