Saturday, May 04, 2019 at 12:16
Alloy, I should have been a little clearer in my explanation.
When I stated, "you cannot carry gas bottles on the drawbar of any trailer", I meant they could not be carried in any arrangement that is not ADR or Gas Standards compliant.
All gas bottles fitted to caravans and campers must be installed to AS/NZS 5601.2-2013.
Section 3 of the Standard covers gas bottle installation requirements for boats and caravans - and all variations and sub-variations of those vehicles.
It makes sense to ensure that any spare gas bottles carried, are carried and secured, in an identical manner to gas bottles being utilised for an energy source.
Section 3 of the Standard covers gas bottle location. The requirement is that gas bottles be fixed to the caravan chassis or under the caravan skirt (obviously, still attached to the chassis).
Section 3.2.4 of the Standard explicitly states -
"Stowage requirements for unconnected or spare cylinders shall be the same as for connected cylinders".
Section 3.3 covers gas bottle attachment methods - and Section 3.4 covers gas bottle compartments and lockers.
AS/NZS-5601-2-2013
The gas bottle attachment method must be capable of withstanding a force applied in any direction, that equates to 4 times the full weight of the particular size of gas bottle.
The entire aim of the Standard is about substantially reducing the risks associated with gas bottles when they leak, or vent - either slowly - or rapidly, in the case of damage or accidental ignition, caused by fire or collision.
If a gas bottle vents rapidly through the safety valve, it is imperative that the venting is done to the atmosphere, in a direction that is safest, and not aimed at living areas, or vehicle cabins.
Boats have specific instructions for gas discharge venting.
For this same reason, gas bottles located on the front of caravans must not have their safety valve oriented towards the tow vehicle.
Cheers, Ron.
FollowupID:
898980