Sealing Boot in a Hatchback

[takai]

Alright guys, here is another little conundrum for you. If i dont go down the fuel cell route, i was planning to put my fueling system in the boot, in the spare tyre well to keep the weight low down.

I was reading the CAMS regs last night for IPRA and it states:

(iii) For vehicles which are manufactured with the fuel tank in the cockpit, a flame and liquid- proof bulkhead must be fitted between the tank and driver.

How would one achieve this in a hatch? And what constitues a "flame and liquid proof bulkhead"? I cant find any further schedules on the topic, so is this just one of those CAMS conundrums?

[Captiva Fan]

Couldn't you just seal-off the spare tyre well itself?

[takai]

Im starting to think so, but there isnt really any consensus on the topic.
I gave CAMS a ring on Friday and they just indicated that the "area had to be sealed"

But also no specs on what a "flame and liquid proof bulkhead" constituted.

[Captiva Fan]

I did think the situation was "sedan = good, hatch = bad", but ain't gonna say that for certain 'cos I obviously don't know the rules. However, I'm over 50% sure; and if you think about it, there's not a helluva lot involved in that bulkhead in a sedan once the seats have been reefed out.
I'd be very surprised if you're not allowed to make the absolute flimsiest structure out of aluminium, so long as it's relatively airtight.

[takai]

Its not so much of a case of sedan good hatch bad, but rather that sealing off the boot in a sedan is quite easy, and just a sheet of alloy with some rivets will do that fine. Sealing off the boot in a hatch is somewhat more difficult.
What im currently thinking of is exactly what you said. Just construct a little box to go over the fueling gear out of alloy/perspex.

[GTSBoy]

perspex = not fire proof.

Ally = not really fireproof either, but likely to be overlooked.

cheers

[Nafe]

Pm Datman, he may be able to help as he's pretty familiar with Justin McClintock's IPRA Sprinter here in NSW.