Any workspace where noise levels exceed 84 dBA should be classified as a “High Noise Area.”
A “DANGER” hazard sign should be posted at each entrance into every “High Noise Area” and should describe the level of protection required to be used in that space, based on Figure 12.7.
Additional Information: If hand tools or other portable or localized equipment produce noise levels that exceed 84 dBA, a warning sign should be posted at the work site or on the equipment identifying the hazard and requiring the use of hearing protectors at that site or with that equipment.1472G