If using a single layer sfi 3 2 a1 or 3 2 a3 suit the driver must also wear fire retardant sfi or fia certified undergarments.
Fia fire suit ratings.
Sfi ratings are determined by the results of several tests conducted on racing suits for fire retardant capabilities and thermal protective performance tpp.
Superior construction will yield ratings of 3 2a 3 and 3 2a 5.
Multilayer suits rated sfi 3 2 a5 or higher are highly recommended and may be worn without undergarments there are no mentions of fia approved suits in the official rules.
Used in sanctioning bodies like nhra and nascar the sfi foundation s racing suit specification 3 2a tests a material s fire retardant capabilities.
The standard spec for racing suits is 3 2a or 3 2a 1.
For that reason it s important to know your sanctioning body s requirement for sfi united states or fia international ratings.
The fire industry association fia is pleased to announce the launch of our new level 3 qualification on bs 5839 6 fia ao fundamentals of fire detection and alarm systems in domestic premises.
Superior construction will yield ratings of 3 2a 3 and 3 2a 5.
This is the link to the suit that i have.
The standard spec for racing suits is 3 2a or 3 2a 1.
I have a fia 8856 2000 driving suit which should be equal to or better than a sfi 3 2a 5 rated suit.
The only way to increase a tpp rating is through adding multiple layers.
Since the fia and sfi rating are equal will i be allowed to use my current driving suit or should i start shopping for a new one.
The 3 2a rating does not include underwear.
That is why northstar motorsports only sells multi layer suits made from nomex and we highly recommend either a three layer suit with an fia 8856 2000 rating or a two or three layer suit with an sfi 3 2a 5 rating for all types of racing.
Fia s new level 3 qualification on bs 5839 6.
Safety ratings and racing suit design are often intertwined.
Tpp rating can vary within an sfi rating for example sfi 3 2a 5 rated suits commonly called sfi 5 are available with tpp ratings anywhere from 19 to 26 depending on the number of layers and the fire retardant material used to construct the suit.
Sfi ratings are determined by the results of several tests conducted on racing suits for fire retardant capabilities and thermal protective performance tpp.
It is certified through sfi spec 3 3 for driver accessories and undergoes the same tpp and flammability tests as the driver suit outerwear.