Noise and vibration control in crusher plant activities to enhance health and safety of workers

Abstract

Fulfillment of human needs necessitates activities that have their positive and negative aspects. Crusher plant operation is not an exception. One of the major concerns related to these activities is its impact on worker health and safety. Although noise and vibration related legislation focus on reduction at the source, provision of personal protective equipment is considered as an effective method of control. The focus of this study was to look for control strategy for noise and foot transmitted vibration hazards related to fixed machineries in crusher plants. Six crusher plant sites were selected based on their varying production capacity for the study. Accordingly, selected sites were visited to carry out area noise and wholebody vibration surveys. Plant arrangement, details of crusher units, prevailing meteorological conditions and ground conditions were also recorded. Daily exposure levels were determined and sound and whole-body vibration contour maps were developed based on Control of Noise and Vibration at Work Regulations Act 2005. Relationship of areas of hazardous zones w i t h production capacity was determined using statistical tools and the level of worker awareness was studied through one to one interviews. Cost effective controls are recommended by studying the best practices.