A safety helmet is required where there is a risk of being injured by falling objects. Bump caps are not a substitute for safety helmets and must not be used to protect the head from falling objects. Shells are primarily made using UV stabilised high density polyethylene (HDPE) or ABS (Acrylonitrile Butadiene Styrene). Harnesses are made using low density polyethylene or terylene webbing. All helmets are marked with the quarter or month and year of manufacture. Helmets stored in boxes in which they were supplied and do not experience environmental extremes, the shelf life of a helmet is not limited. However, it is not recommended that a helmet should be in use 5 years after date of manufacture. Some helmets have sweatbands and chinstrap already fitted. Either can be purchased separately. Safety helmets can be fitted with hearing protection through clip on ear defenders. Helmets may be cleaned with soap and water, drying with a soft cloth. Do not use abrasive substances or solvents and do not store in direct sunlight or in contact with chemicals. Inspect a helmet regularly. Replace if the shell shows more than superficial abrasions/scuffing. Identifying Hazards EN 397 specifies physical and performance requirements of industrial safety helmets. Certain tests are mandatory if the product is to receive EN 397 approval. -20º/-30ºC 440V a.c. LD MM A manufacturer can choose to submit his products to additional optional tests. Such tests could lead to one or more of these markings appearing on a helmet. The helmet will provide some protection when worn in an environment at or above this temperature. Protects against short term, accidental contact with live electrical conductors up to this voltage. The helmet will provide some protection from lateral compressive loads. Molten Metal splash test. These cover: • Shock Absorption • Resistance to penetration • Flame resistance • Chinstrap anchorage Care and Maintenance Shelf Life Accessories Identifying Materials 204
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