How did the overalls help him in his F1 Bahrain races?

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How did the overalls help him in his F1 Bahrain races?

Сообщение ritcha 03 дек 2020, 06:43

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Romain Grosjean's escape from his fiery Formula 1 crash in Bahrain has resulted in much focus around the role that the halo and crash structures had in saving him.

But one equally crucial aspect of his survival is that Grosjean was able to emerge from around 29 seconds inside a fireball with only very light burns to his hands.His fireproof overalls, underwear, socks, balaclava and gloves all did exactly what they were designed to do in protecting him from the flames.That success is testament to both the FIA, in introducing new tougher safety standards for driver wear in 2020, as well as the extra work that Grosjean's racewear supplier Alpinestars has done to go over and above what is needed.

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It is well known that F1 driver safety wear has to be fireproof, and undergoes testing for both direct flames and heat transfer.

For 2020, though, a new standard for all driver wear has been made mandatory in F1, increasing protection by around 20 per cent for many items and ensuring all items - including underwear and socks - were now tested.The new regulations (known as 8856-2018) were introduced two years ago and made mandatory in F1, FE, WRC and WEC for this season.The previous flame test requirements are the same - where materials are subject to a 700°C flame for 10 seconds. After that time period, the flame is removed and the material should then not burn for more than two seconds and there should be no debris, molten debris nor holes.

One of the areas that has been paid great attention is what is known as a Heat Transfer Index test, which effectively measures how hot things get inside a material.

The machine uses a thermocouple placed in contact with the innermost layer of the garment to measure the time required for an increase of 24°C from the start point. It uses a 1000°C burner to simulate a fire.

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From 2020, race suits have to resist at least 12 seconds (it was 10 seconds before). Shoes and gloves must withstand 11 seconds (with the exception of glove palms which have to withstand eight seconds).

Underwear, balaclavas and socks have been included in these tests for the first time, and must exceed five seconds.
Alpinestars has always prided itself on going beyond the minimum requirements, so the apparel Grosjean wore will have been produced to exceed the homologation standards.
Last year the company had already completed a full phase in of new items so everything was homologated to the 2020 standard already, with some items lasting up to three times the minimum required.
As Alpinestars' Christopher Hillard said: "We always try to exceed the base standard. And in this instance, it has served us well, because when you do the calculations, Romain was exposed for longer than the minimum requirement.

"There's only so much you can do though and fortunately, we don't get too many of these fuel cells breaches and fires. But when we do, we're going to do everything we can to learn from it and develop our products."
ritcha
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