The Intermediate Level Waste containing approximately 5g of plutonium was contained within drums and shipped in a lorry from Immingham to Gothenburg on a normal commercial ferry. The cargo met all the regulatory and licence requirements for the chosen method of transport.
The container of 46 irradiated advanced gas-cooled reactor (AGR) fuel pins containing less than 400g of plutonium was shipped from Workington to Wallhamn on the Atlantic Osprey. This is a special-purpose cargo vessel, approved by the Maritime and Coastguard Agency to International Maritime Organisation standards to be certificated as an INF2 (Irradiated Nuclear Fuel) vessel.
The fuel pins are still undergoing analytical examination and plans for their return to the UK have not yet been made.