ASK & WE ANSWER

A hazardous substance is one that, by its nature, produces or may cause momentary or permanent damage to human, animal or plant health, property and / or the environment.

They come from activities in which hazardous substances are used.

The Ministry of Environment and Natural Resources (Semarnat) announced the agreement establishing the maximum permissible noise emission limits for industrial areas. The document published in the Official Gazette of the Federation that entered into force on December 4 stipulates that for the industrial and commercial areas the maximum permissible limit is 68 decibels between 6:00 a.m. and 10:00 p.m. and 65 of 22 : 00 to 6:00 hours.

The exposure of workers to a stable and / or variable noise must be controlled by the employer in such a way that, in a work day of eight (8) hours, the level of continuous ambient noise must not exceed 85 decibels, measured in the position of the worker’s ear through the use of a sound level meter, which may be required by the employer to the Institute of Occupational Safety (ISL) or Mutuals to which the company belongs.

Noise is possible to measure through an instrument called a decibel meter or sound level meter. The decibel (dB) is the unit of measurement used to know the sound pressure level. The hearing threshold is at 0 dB and the pain threshold at 120 dB.