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With sound levels up to 120 decibels, hearing protection is definitely required for the operator and anyone else working near the machine. How Much Does Under Water Cutting Affect Plasma Noise Levels? These levels are estimated at 6’ from the operator, for dry cutting – a typical worst case scenario. Noise does tend to bounce around, depending on things like that.īased on actual measurements taken at ESAB, combined with other data that is available on the internet, we have assembled the following chart of estimated sound levels. Actual sound pressure levels to reach an operator also depend heavily on how far away he is from the noise source, as well as other environmental factors, such as location and type of walls, ceiling, etc. How loud a specific system is will depend mostly on the cutting current and the type of cutting table, but also on the gases and nozzle being used.
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Dry plasma cutting is going to range from around 90 to over 120 dB, which is well above the threshold that will cause hearing damage. It’s about as loud as a two stroke chain saw about 30 feet away, or about the same as a loud toilet flush 3 feet away. Paragraph 1910.95(c)(1) states: “The employer shall administer a continuing, effective hearing conservation program.whenever employee noise exposures equal or exceed an 8-hour time-weighted average sound level (TWA) of 85 decibels measured on the A.” That is why most employers are trying to keep noise below the 85 dB threshold.īut 85 dB isn’t that loud. 95, entitled “Occupational noise exposure“, deals with noise levels in the workplace. In use will require hearing protection when dry cutting.