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Packaging Room Noise Exposure Assessment

Industry:
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Application:
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A manufacturer's packaging room put 7 of 10 employees over the OSHA action level. Memtech Acoustics ran full-shift dosimetry and octave-band area mapping, isolated the tonal and broadband sources, and defined the engineering controls, so the fix targeted the noise rather than defaulting to hearing protection.
Engineered acoustic enclosure fabricated for industrial noise control

Year

Over Action Level

7 of 10

Tonal Sources

63 & 125 Hz

Services Provided:

Services Provided: Personal Dosimetry, Area Noise Survey, Octave-Band Analysis, Engineering Controls Scope

Challenge

A manufacturer needed to know where its packaging operation stood against OSHA noise limits, and what to do about it. Overall levels felt high, but nobody had defensible numbers or a clear source to treat.

Solution

Memtech Acoustics conducted personal noise dosimetry on the participating employees across a full shift, using NIST-traceable Class 1 instrumentation, alongside an area noise survey and octave-band frequency analysis. Exposures were evaluated against OSHA 29 CFR 1910.95, MSHA, and NIOSH criteria. The frequency data separated a broadband noise from the weighing and product-transfer operation from two tonal sources: vacuum pumps spiking at 63 and 125 Hz, and conveyor operation.

Results

Employee exposures came in below the permissible exposure limit, but 7 of the 10 participating employees exceeded the action level, warranting a hearing conservation program. Because the sources were identified by frequency, Memtech Acoustics could scope engineering controls at the source rather than defaulting to hearing protection, giving the plant a defensible report and a targeted path to reduce exposure.

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