The Approach to Noise Problems In the Brewing Industry.

Oldman, K.

Abstract
The author covers the basic concepts of noise control, the practical considerations and problems which were experienced and the manner in which some of these were effectively dealt with. It has been firmly established that noise reduction commences at the design stage of the plant and special emphasis is placed at this point by providing the plant manufacturers with the noise specification around which the plant is to be designed and the maximum noise ratings that are acceptable. In-plant noise problems, while not being impossible to deal with, can be extremely costly. It is, therefore, necessary if an optimum level of noise reduction is to be achieved within acceptable cost limits that the theory of sound physics and the application of acoustic technology is clearly understood. It also requires the use of superior grade measuring instruments and the ability to interpret the results obtained in respect of decibel rating, weighting scales and frequency analysis. Sound control procedures can be applied at all points in the 'sound transfer chain' in order that the desired results can be obtained, the chain being broken into the three simple elements of 'Source, Transmission Path and Receiver.' The desired results only conforming to the targets set down for the recipient and does not necessarily entail the reduction or elimination of the sound completely. The limitations and problems in the use of ear-defenders must be appreciated as their use is sometimes the most desirable or the only way of protecting the employee. The simpler the approach to the problem of noise the better, and it is upon this basis that considerable noise reduction has been achieved throughout the Bass Charrington Organisation.