Maritime Unions say Z Energy's jet fuel debacle has exposed a predictable weakness in New Zealand's fuel supply.
Airlines are being forced to ration their fuel allowances at Auckland Airport, after a contaminated shipment of aviation fuel was rejected on arrival.
The Unions say since the Marsden Point refinery closed in April it has only taken a few months for the wheels to come off the new import system.
Maritime Union of New Zealand National Secretary Craig Harrison spoke to Māni Dunlop.