A noise emission and vibration study of a MISTA RD-165 FHAD grader to reduce environmental harmful impact

Noise emitted by construction machinery is one of the most important harmful factors having impact on human health. The noise emission risk comprises people working on the construction site but as well as other persons around the machine. The article concerns the issues of noise level and noise emission measurements applied in heavy machinery / construction machinery which are covered by the EU directive 2005/88/EC. The methods of noise testing during design and in the certification process has been described. The basic information about testing the noise emission to the environment has been presented. The reference documents and EU standards concerning this topic has been described. The noise testing methods has been presented based on the prototyping and R&D cycle of the Mista RD-165 FHAD grader which is subjected to the European noise limits. The results of noise measurements and sound power level determination has been presented. The testing procedure where implemented during two stages of R&D cycle. The article describes the effects of the improvements in the grader focused on noise emission limitation limits.