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AMERICAN STANDARDS

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STANDARD ON FLAME RESISTANCE GARMENTS FOR INDUSTRIAL PERSONNEL PROTECTION AGAINST FLASH FIRE

SCOPE: To specify the minimum performance requirements and test methods for flame-resistant fabrics and components and the design and certification requirements for garments for use in areas at risk from flash fires.

FABRICS

MicrosoftTeams-image-10-e1647257216406

Highly comfortable, multi-layered, fireproof fabric for protection from low temperatures, wind and rain.

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MicrosoftTeams-image-9-e1647257391729

Inherently fire resistant fabric that surpasses international standards electric arc, large fire deflagrations (flash fire), electrostatic risks and small acid splash risks.

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INDUSTRIES

TEST METHOD

DESCRIPTION

ASTM D2700

Thermal Protective Performance (HTP) should be greater than 6.0 cal/cm2 and 3.0 cal/cm2.
The fabric should be tested in its received condition and after undergoing 3 washings.

Requirements for compliance:
Spaced HTP should exceed 25 J/cm2 (equivalent to 6.0 cal/cm2).
Contact HTP should exceed 12.6 J/cm2 (equivalent to 3.0 cal/cm2).
The test involves the application of a combination of radiant and convective heat.

ASTM D6413

Flame resistance test:
The char length should not exceed 100 mm (4 in.). The fabric should be tested in its received condition and after undergoing 100 washings.

Requirements for compliance:
Char length should be less than or equal to 100 mm in any direction.
After-flame duration should be less than 2 seconds.
No melting or dripping should occur.
The test should be conducted over a duration of 12 seconds using methane gas.
The measurement of char length should be performed with different weights based on the fabric’s weight.

Requirements for compliance:
Thermal shrinkage should be less than 10%.
No melting or dripping should occur.
There should be no separation of layers.
The fabric should not ignite.
 
Weight of the fabric Weight to be applied
68 – 203 g/m (2-6 oz/yd²) 100g (4 oz)
203 – 508 g/m (6-15 oz/yd²) 200g (8 oz)
508 – 780 g/m (15-23 oz/yd²) 300g (12 oz)
>780 g/m ( > 23 oz/yd²) 475g (16 oz)

According to specifications of NFPA 2112 sec 8.4

Heat and thermal shrinkage resistance should be less than 10%.
The fabric should be tested in its received condition and after undergoing 3 washings.
The test is conducted at a temperature of 260ºC for a duration of 5 minutes.
 
Requirements for compliance:
Thermal shrinkage should be less than 10%.
No melting or dripping should occur.
There should be no separation of layers.
The fabric should not ignite.

ASTM F1930

Manikin Test

The predicted burning area of burn injuries (2nd and 3rd degrees) is 50%.

Three garments should be tested after one washing. The design of the garments is defined by the standard.

The garments are tested along with standard undergarments: briefs of 100% CO weighing 170 g/m2 and a T-shirt of 100% CO weighing 140 g/m2.

The exposure time is 3 seconds.

The final result is the total predicted area of 2nd and 3rd degree burn injuries (excluding feet and hands, but including the head). It should not exceed 50%.