ANSI/ISEA Z89.1-2014 is a revision to ANSI Z89.1-2009. This standard provides performance and testing requirements for industrial helmets, commonly known as hard hats. It establishes the types and classes of protective helmets, depending on the type of hazard encountered. It includes specifications for helmets designed to offer protection from lateral impact, or top-only impact, giving employers and users the flexibility to specify the helmet that best meets the needs of their specific workplace.
Industrial head protective helmets meeting the requirements of this standard are classified as Type I for top protection, or Type II for lateral impact protection. Both types are tested for impact attenuation and penetration resistance. Type II helmet performance requirements include criteria for impact energy attenuation from impacts from the front, back and sides as well as the top; off-center penetration resistance, and chin strap retention.
The three classes indicate the helmets electrical insulation rating. Class G (general) helmets are tested at 2200 volts, Class E (electrical) are tested to withstand 20,000 volts, and Class C (conductive) provide no electrical protection.
Key updates contained in this version include optional testing and marking features for head protection for use in high-temperature environments, as well as editorial revisions to clarify test procedures.