ASTM F1891

ASTM F1891 is the governing ASTM standard for Flame Resistant Rainwear, specifically designed to protect workers from both electrical hazards and inclement weather conditions. Here are the key requirements outlined by ASTM F1891:

1. Flammability Requirements: Similar to ASTM F1506, fabrics used in rainwear must pass ASTM Test Method D6413. This involves self-extinguishing within 2 seconds after removal from a flame and limiting the char length to less than 6 inches. Each different color of the fabric must be tested individually for compliance.

2. Arc Thermal Performance: Rainwear fabrics must undergo testing per ASTM Test Method F1959 to determine their Arc Thermal Performance. The results of this testing must be reported as an Arc Rating on the garment label, indicating the level of protection against thermal hazards during electrical incidents.

3. Compliance with OSHA Standards: Rainwear meeting ASTM F1891 is compliant with OSHA 1910.269, which specifies safety requirements for workers exposed to electrical hazards.

4. Additional Requirements:

   • Water Resistance: The material must withstand a water pressure of 30 psig without leaking.

   • Seam Integrity: Seams must not exhibit any leakage when exposed to water at 3 psig for 2 minutes.

   • Tear Resistance: The fabric must have a trapezoidal tear resistance of at least 6 lbs. in both the warp and fill directions.

   • Non-Conductive Attachments: Any materials attached to the rainwear must be permanent, electrically non-conductive, and must not degrade the performance of the rainwear.

5. Flame Resistance: Rainwear material must be flame-resistant, specifically tested to ensure it does not melt and drip when exposed to a flame, in accordance with ASTM D6413-08. It should exhibit no more than a 2-second afterflame time and less than a 6-inch char length.

6. Labeling Requirements: All rainwear that meets ASTM F1891 requirements must be labeled accordingly. The label should include a statement of compliance with ASTM F1891, the manufacturer’s name, size information, care instructions, fiber content, and the garment’s Arc Rating.

7. Accessibility: The standard can be purchased and downloaded from the ASTM website, providing access to detailed requirements for manufacturers, safety professionals, and regulatory bodies involved in ensuring the safety and compliance of flame-resistant rainwear.

Understanding and adhering to ASTM F1891 ensures that rainwear provides effective protection against both electrical hazards and adverse weather conditions, maintaining high safety standards in workplaces where these risks are present.