Atpv Rating Fire Resistant Clothing. This arc rating or ATPV appears on the labeling of all FR protective apparel for easy referencing. 1 ATPV indicates the level of protection provided by flame resistant clothing as measured in calcm 2.
The ATPV of an FR garment indicates that you have a 50 chance of the onset of a 2nd degree burn if exposed to an electric arc with the same calories of incident energy. Higher-weight eg thicker denser fabrics typically have higher Arc Flash Rating and provide increased protection as does the layering of FR clothing. The test standard for that is NFPA 2112.
ATPV means Arc Thermal Protective Value.
Matching the arc rating of the Flame Resistant apparel with the hazard rating maximizes worker protection against the chance of burn injury or death. When looking at an arc rated flame resistant garment the rating you should see included on a label as required by the American Society for Testing and Materials ASTM standard F1506 is the arc thermal performance value ATPV of the fabric. ATPV means Arc Thermal Protective Value. Pants cover the legs and overalls cover the legs and front of the torso.
