AS 2221.2-1979

AS 2221.2-1979 Methods for measurements of airborne sound emitted by compressor units including primemovers and by pneumatic tools and machines - Engineering method for measurement of airborne sound emitted by pneumatic tools and machines
standard by Standards Australia,

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Part 2 describes a method for determining mean sound level and mean band pressure level of airborne sound emitted by pneumatic tools and machines, including both percussive machines, such as crawler drills, rock drills, paving breakers, picks and spaders, chippers, riveters, scalers, and non-percussive machines, such as rotary air machines, screw drivers and nut setters, impact wrenches, hoists. It is an engineering method which requires a controlled environment for repeatable results.