New technology for mapping plutonium hotspots is being tested at the Sellafield fuel cycle site in Cumbria, UK. The technology, developed by Cavendish Nuclear, could lead to the faster, safer and cheaper decommissioning of nuclear facilities. Cavendish Nuclear’s standard DISPIM (Decommissioning In-Situ Plutonium Invention Monitor) is currently used at the Sellafield site for mapping alpha contamination. This uses a significant number of neutron detectors which are placed in close proximity with the location under investigation, such as a glove box. Neutron counts and multiplicity counts are taken and the results processed to obtain information about the level and distribution of neutron sources within the location. That system is heavily shielded and weighs half a tonne.
World Nuclear News 20th Aug 2018 read more »
The site of Britain’s worst nuclear accident is to be dismantled as part of the wider decommissioning of the Sellafield nuclear plant. The planned demolition of the 360 foot structure will begin later this year. A giant crane has been constructed to bring it down. The 152m crane is the tallest structure ever built at Sellafield, just six metres shorter than the Blackpool Tower. It will begin work this autumn, removing and lowering chunks of the chimney cut out using diamond wire saws. Duncan Thompson, the Nuclear Decommissioning Authority’s Sellafield Programme director, said: “The complex task of decommissioning and demolishing the Windscale Pile One Stack has reached an important stage. It is another example of the ingenuity that goes into solving the UK’s decommissioning problems.
Energy Voice 20th Aug 2018 read more »
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