NFPA 2112 STANDARD ON FLAME RESISTANCE GARMENTS FOR PROTECTION OF INDUSTRIAL PERSONEL AGAINTS FLASH FIRE
Thermal Protective Performance (TPP): Shall be have a “spaced” TPP rating of not less than 25 J/cm2(6.0 cal/cm2) and a “contact” TPP rating of not less than 12,6 J/cm2 (3.0 cal/cm2)
Flame resistance flame (vertical test) Fabric and reflective striping utilized in the construction of flame-resistance garments shall have a char length of not more than 100 mm ( 4 in) and an afterflame of not more than 2 seconds, and shall not melt and drip.
Heat and thermal shrinkage resistance test. Fabrics utilized in the construction of flame-resistance garments, excluding manufacturers’ labels, shall be individually tested for thermal shrinkage resistance and shall not shrink more than 10% in any direction.
ASTM F 1930
Manikin Test. The garment fitted on a manikin with 100 sensors in stationary conditions must be tested against the exposure to flash fire for 3 seconds and the heat flux 84 KW /m² to provide predictions of skin burns.