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NFPA 2112

nfpaNFPA 2112: standard on flame-resistant garments for protection of industrial personnel against flash fire

The standard specifies the minimum design, performance, certification requirements, and test methods for flame-resistant garments for use in areas at risk from flash fires.

NFPA 2112 outlines 17 test methods, including: flame resistance, manikin testing, thermal shrinkage resistance, heat resistance and a host of other tests. Standard includes:

   1. ASTM F1930 - 11 Standard Test Method for Evaluation of Flame Resistant Clothing for Protection Against Flash Fire Simulations Using an Instrumented Manikin
   2. ASTM D6413 - 11 Standard Test Method for Flame Resistance of Textiles (Vertical Test)
   3. ASTM D 4108-87 (TPP)  Termal Perfomance Test
   4. ASTM D737 - 04(2012) Standard Test Method for Air Permeability of Textile Fabrics
   5. STM D5034 - 09(2013) Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)   
   6. ASTM D1424 - 09(2013) Standard Test Method for Tearing Strength of Fabrics by Falling-Pendulum (Elmendorf-Type) Apparatus

NFPA 2112 Pass criteria's:

1. 50% predicted body burn or less

  • Under ASTM F1930 test method (which is a key part of NFPA 2112), a pass/fail criteria of 50% body burn - fabrics or fabric systems that achieve 50% predicted body burn or less under these conditions can be said to pass the performance requirements of NFPA 2112. Then, a three second burn exposure at 2.02 cal/cm2 is given to a piece of fr-clothing and the total predicted body burn is measured. 
  • Garments under  the ASTM D6413 test method are constructed in a size 40-RG coverall configuration based on a standard pattern, fitted to a thermal mannequin, and tested over 100% cotton t-shirt and briefs.  
  • FR-clothing, made of XM Fireline fr-fabrics is regarded as having 50% or less predicted body burn in 3 seconds, according to the specifications of NFPA 2112 (ASTM F1930 test method).

2. The fr-fabric must not melt, drip, or have more than 2 seconds afterflame or 4.0 inches char length when tested before and after 25 launderings when using ASTM D6413 test method. 

  • Under ASTM F1930 test method (which is a key part of NFPA 2112), a pass/fail criteria of 50% body burn - fabrics or fabric systems that achieve 50% predicted body burn or less under these conditions can be said to pass the performance requirements of NFPA 2112. Then, a burn exposure at 2.02 cal/cm2 during 3 second is given to a piece of fr-clothing and the total predicted body burn is measured. 


NFPA-2112-table

 Note: NFPA 2112 requires a maximum 4-inch char length when a garment is tested according to ASTM D6413.  ASTM F1506, (Standard Performance Specification for Flame Resistant Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Arc and Related Thermal Hazards) requires a maximum 6-inch char length when ASTM D6413 is used.

 NFPA 2112 also requires the following:

  • All garments must have a product label or labels permanently and conspicuously attached to each flame-resistant garment.
  • All garments labeled as compliant with NFPA 2112 must meet or exceed all applicable requirements specified in this standard and shall be UL certified
  • The UL certification organization’s label, symbol, or identifying mark shall be attached to the product label, be part of the product label, or be immediately adjacent to the product label.
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INDUSTRY
FR FABRIC
FR TAPE & ZIPS
FR WORKWEAR
TYPE OF PROTECTION
Army & Police 100% Cotton    
Electric Utility 88/12 Modacrylic FR Jackets ISO 11611
Emergency (911) 80/20 Cotton/Polyester FR Pants ISO 1149-5
Mining 99% Cotton/1%Antistatic  FR Shirts NFPA 2112
Oil & Gas 93 M-Aramid/5 P-Aramid/2AS  FR Underwear NFPA 70/E
Power Plants 100% Meta-Aramid FR Rainwear ASTM F1506
Railway Roads 100% Para-Aramid   ASTM F1959 (ARC)
Welding 50% FR-Viscose/50 M-Aramid   EN 61482-1-2
  N 3A Aramid   EN 469
  FR Reflective tapes   EN 61482-1-2 (ARC)
  FR Zippers    
  FR Sewing threads