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EN 352-3 - Hearing protectors - General requirements - Part 3: Ear-muffs attached to an industrial safety helmet
EN 352-3:2002 - Hearing protection - General requirements - Part 3: Ear-muffs attached to an industrial safety helmet
EN 352-3:2002, this part of the standard specifies requirements for construction, design, performance, marking, and user information for ear-muffs fitted to an industrial helmet which complies with EN 397. It specifies the sound attenuation of the helmet mounted ear-muffs, measured in accordance with EN 24869-1. Because one model of ear-muffs designed to be attached to an industrial safety helmet can be fitted to a number of helmet models and sizes, this part of the standard sets out a series of physical and acoustic requirements for the ear-muffs when fitted to the specified model(s) or size(s) of helmet. All requirements apply to the ear-muffs fitted to one of the specified models or sizes of helmet (the basic combination), and an abbreviated set of requirements apply to the same model of ear-muffs when fitted to the other specified models or sizes of helmet (the supplementary combinations). Information on the range models of helmet tested with the ear-muffs, and for which the combination satisfied this standard, is required to be made available. Ergonomic aspects are addressed by taking into account within the requirements: the interaction between the wearer, the device, and whenever possible, the working environment in which the device is likely to be used.
Marking ear muffs:
• Manufacturer/company name
• Identification or model number
• Number and date of the standard
• When required- e.g. “Top “and/or “Left “and “Right”