COMMON FR SAFETY RELATED CLASSIFICATIONS
NFPA 70E refers to the National Fire Protection Association standard for electrical safety in the workplace. It addresses employee workplace electrical safety requirements, specifically.
NFPA 2112 refers to the National Fire Protection Association standard to protect workers from flash fire exposure and injury by specifying performance requirements and test methods for flame-resistant fabric and garments.
HRC refers to Hazard Risk Categories defined by the NFPA 70E standard for electrical safety in the workplace. HRC levels are determined by the minimum amount of calories per square centimeter (ATPV or Cal/cm2) a treated garment must pass through with a 50% probability of a 2nd or 3rd degree burn occurring, thus the protective level of the treated clothing. The higher the ATPV, the higher the HRC level attained, the greater the protection.
HRC 1: MINIMUM ATPV = 4 cal/cm2
HRC 2: MINIMUM ATPV = 8 cal/cm2
HRC 3: MINIMUM ATPV = 28 cal/cm2
HRC 4: MINIMUM ATPV = 40 cal/cm2
ANSI classes are a system created by the American National Standards Institute depending on the total area of high-visibility garments. The amount of required visible material increases with each performance class.
CLASS 1: For use by workers who are well separated from
traffic and working in areas where vehicle and/or equipment speeds do not exceed 25 mph.
CLASS 2: For workers who are on or near roadways, are exposed to traffic traveling at speeds in excess of 25 mph, and are in situations where complex visual backgrounds may be present.
CLASS 3: For workers in the highest-risk situations, who need to be visible through a full range of body motions from a minimum
distance of 1280 feet, and exposed to very high speed traffic.