ASTM 1506

ASTM F1506 is a critical standard governing Flame Resistant (FR) clothing specifically designed for electrical workers exposed to momentary electric arcs and related thermal hazards. Here are the key points regarding this standard:

Flammability Requirements: Garments are tested according to ASTM D6413, a standard test method used to evaluate flame resistance by measuring a fabric's afterflame time and char length after exposure to a controlled flame. While ASTM D6413 itself does not set pass/fail criteria, the requirements are defined in ASTM F1506, which mandates that fabrics must have an afterflame time of 2 seconds or less and a char length of 6 inches or less. This test is performed both initially and after 25 wash cycles to ensure long-term performance and durability.
Arc Thermal Performance: Fabrics must also undergo testing according to ASTM Test Method F1959 to determine their Arc Rating, which represents the level of protection provided against thermal hazards during an electric arc event. Arc Ratings may be reported as either ATPV (Arc Thermal Performance Value) or EBT (Energy Breakopen Threshold) — both are valid indicators of a fabric’s arc flash protection.
Compliance with Industry Standards: Garments that meet ASTM F1506 are compliant with several key industry standards including OSHA 1910.269, NESC (National Electrical Safety Code), and NFPA 70E (Standard for Electrical Safety in the Workplace). These standards collectively ensure that workers are adequately protected from electrical hazards.
Labeling Requirements: All garments compliant with ASTM F1506 must bear specific labeling including a tracking code, a statement confirming compliance with ASTM F1506, manufacturer’s name, size information, care instructions, fiber content, and the garment’s Arc Rating. This labeling provides clear information to users about the garment’s protective capabilities and compliance status.
Accessibility: The standard can be purchased and downloaded from the ASTM website, making it accessible to manufacturers, safety professionals, and regulatory bodies involved in ensuring workplace safety and compliance with electrical safety standards.

For anyone involved in specifying, purchasing, or using FR clothing for electrical work, familiarity with ASTM F1506 is essential to ensure that garments provide adequate protection and meet regulatory requirements. The standard’s rigorous testing protocols and clear labeling requirements help maintain high safety standards in electrical workplaces.

For detailed information and specific interpretations of the standards, you can visit the ASTM F1506 website directly: ASTM F1506