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Dragon Reactor Decommissioning
Project
Winfrith Site Stakeholder Meeting November 2015
Andy Philps - Magnox
Prototype high-temperature helium cooled reactor A trans-European project involving 13 countries
History
Dragon
History
Built: 1960 to 1964
Ceased Operation: 1975
History
Why "DRAGON“?
• In its conceptual stage (in the 1950s) the reactor project hadn’t got a name.
• One of the atomic power pioneers, Otto Frisch, had devised the “Dragon Experiment” at Los Alamos which he said was like “tickling the tail of a sleeping dragon”.
• A fire breathing creature seemed suited to the high temperature reactor project at Winfrith and was adopted along with the banner of St. George.
Decommissioning So Far
• Almost all of the active plant outside of the reactor core has been
removed.
BEFORE NOW
Dragon Reactor Before
Decommissioning
Current Status of Reactor
Decommissioning So Far
BEFORE NOW Dragon Reactor Before
Decommissioning Current Status of Reactor
Decommissioning So Far
Decommissioning So Far
8
1962
2015
9 The Reactor Core
What’s left?
Core Sampling and Characterisation
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What Next?
Scheme Design – Head cell
Scheme Design – Head Cell
Waste
15
Intermediate Level Waste Boxes
Half and Third Height ISO Containers for Low Level Waste
Preparatory Work
Design and Fact Finding
– Design and Enabling Work (2015 to 2016)
– Design & Build the Core Segmentation Head Cell (2016 to 2019)
– Dragon Reactor Core Removal (2019 - 2020)
– ILW shipped to Harwell (2019 - 2021)
– Decommission the Head Cell (2020)
– Demolition of facility to ground level (2021 - 2022)
– Decommissioning Project complete (2022)
SCHEDULE TO COMPLETION