When planning new mechanical plant installations or industrial processes, the Local Authority usually requires an environmental noise impact assessment. This needs to be carried out according to British Standard 4142.
BS4142
BS4142:2014 (“Methods for rating and assessing industrial and commercial sound”) is widely used to determine whether industrial sound is likely to give rise to complaints from people living in the vicinity. The standard is complicated, but basically it sets out a method of assessing the impact of measured or calculated industrial sound, based on the difference between the “rating level” of the sound and the “background sound level” (LA90) that would otherwise exist in the absence of the industrial sound. The “rating level” is derived by adding any necessary correction, due to certain characteristics of the sound such as tonal or impulsive elements, to the “specific sound level”.
Hundreds of assessments
We have completed hundreds of noise assessments on a vast range of proposed installations, from small domestic air source heat pumps, through factories and industrial units, to large-scale open-air waste management sites.
Projects
