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¶ … OSHA Uses as Opposed to Other Organizations
OSHA a 5 dB exchange rate, ACGIH, DoD, organizations a 3 dB exchange rate. Explain The exchange rate depicts an increase or a decrease, an aspect that corresponds to halving or multiplying the noise dose by a factor of two. Assuming similar duration of exposure, a dose of 90dB occurs as twice that of 85dB with the use of a 5db exchange rate. The 3dB (A) exchange rate occurs as stringent based on its maximum permitted duration of 15 minutes in a scenario of a 100dB (A) noise exposure. On the other hand, maximum duration for a 5dB (A) exchange rate with the same conditions occurs as one hour. Proponents of the 3dB exchange rate rule point to the logicality that doubling the sound level should result in halving of the allowable exposure time (Harbison, Bourgeois, & Johnson, 2015)
Why OSHA?
OSHA utilizes a standard exchange rate of 5dB, an adherence to the permissible exposure limit (PEL) for noise, which is 90 dBA. PEL depicts an eight-hour time-weighted average (TWA). Further, the PEL indicates a 100% dose noise exposure. In the standardized 5dB exchange rate, the TWA exposure of 95 dBA equals to a 200% of noise dose. On the other hand, a noise dose of fifty percent equal 85 dBA TWA exposure...
Today, most of noise measuring instruments provide readouts in TWA and noise dose.
Should OSHA be different?
I propose that OSHA should revise the set standard to 3dB from 5dB. Based on updated literature on PEL, significant noise-induced hearing loss occurs at the PEL values recommended by OSHA. Consequently, National Institute for Occupational Safety and Health (NIOSH) recommends 3-dB exchange rate. Adopting a 3dB exchange rate denotes that for every increase by three dBA, there results in the doubling of the amount of noise and halving of the recommended exposure time.
Impact to employees
A more protective PEL depicts a significant reduction in noise-induced hearing losses that results from exposures to work-related noise. A shift from 5-db to 3-db brings along a more protective noise dose calculation paradigm. National and international organizations have adopted a 3-dB exchange rate as opposed to the recommended 5-dB by OSHA. The shift impacts employees, based on the emergence of globalization enabling individuals from a particular country to work in different countries and continents.
The credibility of the 3-dB exchange rate emanates from the extensive research…
References
Berger E. H. (2003). The Noise Manual. New York: AIHA
Harbison, R., Bourgeois, M. Johnson, G. (2015). Hamilton and Hardy is Industrial Toxicology. New York: John Wiley & Sons
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