Vapour Transfer Assembly and Method for Use Thereof

Vapour transfer assembly for a plurality of oil tanks being connected to a common ventilation pipe to allow the atmosphere to be displaced from the tanks to avoid excessive pressure build-up in the tanks. The tanks are grouped into clusters of tanks comprising at least two tanks. A vapour transfer conduit from at least a first tank of such cluster of tanks is connected to a second tank of same cluster causing the atmosphere displaced from the first tank of the cluster of tanks to move through at least the second tank of said cluster of tanks before entering a common ventilation pipe. Thereby, a slower concentration build-up of volatile organic compounds in the atmosphere entering the common ventilation pipe is obtained. A method for loading such tanks is also contemplated.