How can we reduce the noise exposure? Back to top
Know the acceptable exposure limits identified in the health and safety legislation and quantify the necessary sound reduction.To obtain significant noise attenuation, the dominant source should be controlled first. Determine the relative contribution to the excessive noise of each source and rank the source accordingly.Determine the sound level of each source.Identify the path of the noise from the source to the worker.Identify the sound sources: vibrating sources and aerodynamic flow.The steps that must be taken in order to effectively and efficiently control the noise in the workplace are: What are the steps to take to control the noise in the workplace? Back to top
Examples include:įor basic information on sound generation please see the OSH Answers fact sheet: Noise – Basic Information. The sound may be amplified by reflective surfaces that are around the devices.Īerodynamic sources of noise are air or fluid flows through pipes and fans, or as the pressure drops in the air distribution system. Vibration of large structures (e.g., ventilation ducts, guards on machines, equipment supporting structures, etc.).Out of balance moving parts (e.g., unbalanced rigid rotors).Mechanical shocks and friction between parts (e.g., hammering, pressing, running gears, bearings, cutting tools, chutes, hoppers, etc.).Vibration-induced noises are produced by: Sound can be produced by vibration or as a result of aerodynamic systems.
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