 Corus Process Engineering are one of the foremost manufacturers of Nuclear Flasks/Casks for transport and storage of spent fuel and radioactive waste. Having manufactured the very first such flask for the United Kingdom Atomic Energy Authority in 1955 Corus Process Engineering have the enviable record of having produced over 300 flasks for a world-wide clientele.
Excellox 6
The Excellox 6 flask is the largest circular flask of its type to have been manufactured within Corus Process Engineering, its function is to transport spent fuel between Europe and the UK for reprocessing. The fabricated flask body weighed approximately 76 tonnes and the fully assembled weight of the flask is around 90 tonnes. These flasks included; stainless steel cladding within the flask bore machined to a 1.6 µRA finish, accurate fabrication of 89 cooling fins spaced to give a 50mm pitch within %b1 1mm tolerance and a neutron shielding resin between each fin.
TEPCO Lease Flask
One of these contracts was for six flasks to be produced in conjunction with Kobe Steel Limited for use by Tokyo Electric Power corporation (TEPCO). These flasks were some of the most technically demanding ever and included developments in copper fin welding, neutron shielding and automated surface finishing. The latter having to achieve an all-over outer finish to 0.6 µm. All the flasks were delivered on time to an extremely tight programme and have subsequently passed all of the rigorous Japanese inspections.
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