Posted By Lynne Ratcliffe http://www.ukdivers.net/...of%20Gas%20cylinders.pdf hope this helps.

Posted By Paul Cook BT, EDF and most of the other utility companies who carry LPG all have hazard warning diamonds on the rear of their vehicles. I believe that hazard diamonds are ok but its orange placards (used for large quantities of lpg or other dangerous goods etc) that can cause problems if inappropriately fitted. 25kg sounds like alot of LPG, BT and the like generally only carry a 4.5kg cylinder.

Posted By Steve Croasdale Jon Following on from Lawrence. You mention that the vehicles are Plumbers vans, I presume that these are closed vehicles? From my experience it is recommended that lpg be carried in open type vehicles such as a transit pick-up. However this is probably not an option, the next step would be follow the advice of the gas association which recommends 2% of the compartment be ventilated (usually at floor level to allow gases to escape if for example a cylinder were to leak during transit). Also consider segregating the driver/passengers from the lpg by having a sealed rear compartment (a leaking lpg cylinder could asphyxiate the driver/passenger if not segregated. Regards the fixing of hazard warning labels, although its not a legislative requirement if taken out of scope of the dangerous goods regs/ADR. If I were the emergency services attending a road traffic accident which may also involve fire it would assist them if they identified a white van with them displayed, they could take whatever precautions they thought appropriate. If its a white van loaded with a couple of lpg cylinders and no warning stickers and on fire its a bomb behind closed doors! In common with any loads transported, it is important to secure the lpg cylinders, if the driver braked sharp or was involved in a road traffic accident an unsecure lpg cylinder could hit the driver/passengers on the back of the neck. Don't forget additional issues of transporting dangerous goods by road as Lawrence mentioned the regs and ADR and the appropriate exempted quantities opt out still requires some measures such as a transport document suitably worded with the opt out clause. In general if you are carrying 1 cylinder of lpg (12.5kg) its within scope of ADR and the regulations unless you take it out (if possible ) using exempted quantities. Regards Steve