Shaping Smarter Regulations

Individual fit-testing & in-ear dosimetry for App. B of 1910.95

The practices of in-ear dosimetry and individual hearing protection fit-testing should be considered an appropriate alternative as an individualized safety factor for the purposes of evaluating hearing protector effectiveness per Appendix B of 29CFR 1910.95.

At the time that 1910.95 was promulgated, in-ear dosimetry and individual fit testing of hearing protection in the field were not feasible. However, now several Field Attenuation Estimation Systems (FAES) are readily available to employers and in-ear dosimetry has been shown to be technologically feasible.

An MSHA sponsored study in partnership with Yale University provides evidence that in-ear dosimetry is an effective means of preventing further occupational noise-induced hearing loss.

Through the OSHA/NHCA/NIOSH Alliance, OSHA has recognized Hearing Protection Fit Testing as an emerging trend and “Best Practice” in 2008.



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