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This is the fifth edition of CSA Z94.1, Industrial protective headwear - Performance, selection, care, and use. It supersedes the previous editions published in 1992, 1977, and 1966 under the title Industrial Protective Headwear. It also supersedes the Preliminary Standard published in 1965 and replaces the protective headwear requirements specified in CSA Z94-1948, Code for Head and Eye Protection.
1.1 This Standard applies to protective headwear for industrial, construction, mining, utility, and forestry workers. It defines the areas of the head that are to be protected and includes basic performance requirements for dielectric strength, impact attenuation, penetration resistance, passive retention (stability), and shell flammability and liner ignition resistance.
1.2 This Standard includes requirements for and provides guidance on the selection, care, and use of protective headwear.
1.3 The tests specified in this Standard set minimum performance requirements for protective headwear but do not cover other design factors such as comfort, service life, or appearance. Note: Compliance with the requirements of this Standard does not imply equality of performance among different types of protective headwear, nor should it be interpreted to mean that a headwear product is capable of affording greater protection than is specified in this Standard.
1.4 This Standard does not apply to "bump caps", firefighting helmets, rescue helmets, crash helmets, sports and recreation helmets, and riot control helmets.
1.5 In CSA Standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.