The Case for Hearing Protection Device Fit Checking
Authors: Robert M. Traynor, Ed.D., MBA, FNAP, Robert Traynor Audiology, LLC, Fort Collins, CO. Garry G. Gordon, M.S., CEO, EAR, Inc., Boulder, CO. Dennis Colucci, Au.D., Auditory Disorders and Balance Laboratory, Inc., Dana Point, CA. Article also published in Workplace Material Handling and Safety magazine. INTRODUCTION Since the 1970s, verification of the noise reduction (attenuation) provided by hearing protection devices (HPDs), using research level standards, resulted in the Noise Reduction Rating (NRR). This NRR designation is a laboratory-derived single-number designed