ANSI/ISEA 201-2019

Time:2025-02-15
ANSI/ISEA 201-2019 establishes classification requirements for occupational apparel items worn in cold environments. The apparel items specified in this standard are insulated so as to reduce heat loss from the body to a cold environment and are intended to protect workers from cold stress related impairments including hypothermia, frostbite and chilblains. Specific criteria are included for thermal insulation (in units of clo) and thermal transport properties. The resistance to the deterioration of these properties due to laundering may be optionally assessed and classified accordingly. The standard also includes garment care and labeling requirements and provides guidance on the selection of the apparel items based on given environments and activity levels.

Significance & Implications

Cold Work Safety: The standard targets environments where workers are exposed to cold stress (e.g. refrigeration, outdoor work in cold climates, industrial cold storage). It helps reduce risks such as hypothermia, frostbite, and chilblains.

Consistency and Comparability: By defining insulation classes and test methods, different manufacturers’ products can be compared more reliably.

Lifecycle Performance: Recognizing that garments degrade over time, including the optional wash durability classification is important so performance doesn’t fall off quickly.

Practical Usability: Incorporating real-world considerations (weight, thickness, breathability, mechanical flexibility) ensures the standard is not just about maximum insulation, but usable garments.

Guidance for Users & Purchasers: The standard provides information on how to select apparel given environmental temperatures, anticipated activity levels, and acceptable performance margins.

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