I send second emails to strata manager contacted the owner again to remove a BBQ gas cylinder, and unfortunately her response was
In regard of the gas tank, we used it for a BBQ stove. As per by-law 12 (2), the gas tank is intended to be used for domestic purposes, would not applied for the by-law. So I can place it at my parking lot. Please correct me, if I am wrong.
On the other hand the strata manager replied to me there is nothing in the act regarding the appropriate manner to store a gas cylinder on common property. However it is advisable cylinders are stored externally and to avoid all internal . Unfortunately, she can store it in her space but she must ensure the cylinder is safe, checked and maintained.
BTW, I did searches as per LPG gas cylinder storage regulations are based on the Australian Standards, the storage must have sufficient ventilation to safe levels. Apparently there carpark obviously is not be adequate air circulation away from high temperature that this can be in a very dangerous situation for people and property.
Do you think carpark is well ventilation to storage it.