Since many production processes in the chemical and pharmaceutical industries take place at cryogenic temperatures, the use of highly efficient refrigeration systems is imperative, even though they too cause high noise effects.
The noise pollution caused by petrochemical companies is a problem that affects both work environments and spaces bordering industrial installations above all because their processes, consisting of the use of large-scale machinery and systems, give a great perturbation as an effect sonorous.
Noise emissions in situations such as these establishments mentioned are adequately regulated with very restrictive limits, especially as regards the acoustic impact in inhabited areas.