Both would fit.
Our camper had an option of either two spares or a spare and a jerry holder on the back.
Both would fit.
Our camper had an option of either two spares or a spare and a jerry holder on the back.
I've never seen one that says 'water only' so assume it is for both - whatever is required.
In 1965 I was working in the middle of the Simpson Desert. The crew was largely equipped with Landcruisers, and these had dual fuel tanks, under the front seats, and inside the body (unlike Landrovers). One morning, one of these (swb hardtop) apparently developed a leak in the filler hose, resulting in a pool of petrol* under the seats. As the vehicle pulled away from the refuelling point (44 gallon drums plus hand pump), the centre passenger lit up a cigarette and waved the match between his legs to extinguish it, with unexpectedly spectacular results. As they were only doing about 5kph by this time, all three bailed out without injury. Despite using every fire extinguisher in camp, and vigorous work with shovels and sand, it took about an hour to put the fire out. The initial fire burnt through the plastic fuel lines and the tanks then provided a steady flow of petrol onto the floor and through the melted plastic plugs in the drain holes to provide an ongoing fire underneath that was impossible to extinguish until the fuel was exhausted.
As far as I know, the remains are still there.
*At the time Landcruisers were not made in diesel, certainly not sold in Australia, and I'm pretty certain that the only available diesel light four wheel drive at the time was Landrover. For our entire operation, the only diesel used was for the lighting generator and one large air compressor.
The term appropriate standards applies to many things and sometimes there are no specific standards for the whole but there will be for the parts. When it comes to fabricating with metal, there will be welding standards that apply to welding. The use of standards is to try and get a good product to generally accepted quality, in the case of welding, strength.
Standards are also there to offer/assist people a defence when it comes to legal action. If you state that and can show that you have built something to the appropriate standards then it will be accepted that you have done the right thing. If you stray from the standard then it will be up to you to demonstrate that what you have built is suitable. This could take lost of calculations and simulation which can be costly, it is just easier to build it to the applicable standard.
Diesel is not a dangerous good, the flash point temperature is considered too high to be a fire risk. I think if the flash point is over 60C then it is not a dangerous good. Petrol is different. The amount also influences if it is dangerous goods. 1 litre of alcohol (I think) is not dangerous goods however once over a particular quantity it will be
considered dangerous. I doubt a jerry can of petrol will be dangerous goods.
ADRs as already stated apply to the design of vehicles and not to bits that you attach to them. Just have to make sure that you don’t invalidate the vehicles ADR compliance by blocking the view of lights and number plates, etc. Something like a bike rack attached to a towing attachment will not have an ADR to comply to but should not block visibility of items where visibility is requested by the ADRs.
Some states and sometimes the whole country through Federal Laws affect the legality of things associated with vehicles despite the fact they may not infringe vehicle standards (ADRs, etc). I recall when LPG was starting to become a viable alternative to petrol, stationwagon owners had lpg tanks fitted on roof racks as you were not allowed to locate the tank in a passenger compartment. The locating tanks on roofs was outlawed as they could easily come loose in case of an accident. Outward venting systems subsequently allowed lpg tanks to be fitted inside vehicles. So ADRs are not the only thing that has to be consider when modifying vehicles!
If there are no applicable standards or laws then do a risk assessment and mitigate the risks. Be prepared to argue why the actions you took to mitigate the risks are sufficient. Demonstrating that you have thought about the risks will go a long way to demonstrate that you have not acted with blatant disregard in what you have done.
Good luck
The above should in no way be considered as legal advice and you should do your own research to satisfy yourself of the legality of your actions.