MSA specifications

At the time of writing (October 2004) the MSA Yearbook (the "Blue Book"!) specifies the following:

'Section Q.9'

"9.1 Clean Flame-Resistant overalls must be worn. Flame resistant overalls may be manufactured from Nomex III, Proban or equivalent materials. Competitors are also strongly advised to wear Flame Resistant gloves, socks, balaclavas and underwear."

Acceptable standards (abridged):

Racing
FIA Standard overalls w.e.f. 1.1.2005

All other events
BS6249 part 1 Index A or B
BSEN533
FIA Standard overalls

For FIA standard overalls the homologation label will be stitched into the fabric of the garment or on a sewn-in label. For International use overalls must comply with FIA 8856-2000 (w.e.f. 1.1.2005)

"Plastic shoes (such as trainers) should be avoided."

FIA International racesuit specification

A flame-retardant racesuit has to pass a practical test before it can be homologated for use in FIA-organisedmotor sports events.

1. All materials used in construction of the racesuit should pass an international standard ISO6940 which concerns the flammability of fabrics.

2. Samples of the composite used in the suit are tested both before and after washing to give protection of at least 12 seconds before 2nd degree burns.

3. At this point, the composite is twisted along the warp and the weft. If the inner layer breaks open then the racesuit fails the test.

FIA International kartsuit specification:

Samples of the composite are fixed to a rig which is spun at high speed then dropped onto the surface with a standard force. If the fabric melts or rips apart then the kartsuit fails the test.