NFPA 2112-2012, “STANDARD ON FLAME-RESISTANT GARMENTS FOR PROTECTION OF INDUSTRIAL PERSONNEL AGAINST FLASH FIRE”
The NFPA 2112 standard specifies the minimum performance requirements and test methods for FR fabrics and components, and the design and certification requirements for garments developed to protect workers from flash fire hazards. It requires FR fabrics to pass a comprehensive series of thermal tests, including the following standards:
ASTM D6413 – Vertical Flammability test: Fabric must with stand a maximum of 2 seconds after flame and have less than 4-inch char length.
ASTM F2700 – Heat Transfer Performance (HTP) test: Fabric must have a minimum HTP of 6 cal/cm2 with a spacer and 3 cal/cm2 when in contact with the heat source.
Thermal Stability test: Fabric must not melt or drip, separate or ignite after five minutes in an oven at 500 degrees Fahrenheit.
Thermal Shrinkage test: Fabric must not shrink more than 10 percent after five minutes in an oven at 500 degrees Fahrenheit.
ASTM F1930-11 – Thermal Mannequin test: Fabric must not allow have more than a maximum of 50-percent predicted body burn after a
three-second thermal exposure.