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Reference Number InnUK/102071/01
Title Immobilisation challenges with Post Operational Clean Out (POCO) residues
Status Completed
Energy Categories NUCLEAR FISSION and FUSION(Nuclear Fission, Nuclear supporting technologies) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 25%;
PHYSICAL SCIENCES AND MATHEMATICS (Physics) 50%;
PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials) 25%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
Sellafield Limited
Award Type Collaborative Research & Development
Funding Source Innovate-UK
Start Date 01 May 2015
End Date 30 April 2018
Duration 36 months
Total Grant Value £767,781
Industrial Sectors
Region North West
Programme Competition Call: 1403_CRD2_ENE_GEN_DCNS - Developing the civil nuclear supply chain CRD. Activity Developing the civil nuclear supply chain ( CR&D)
 
Investigators Principal Investigator Project Contact , Sellafield Limited (10.000%)
  Other Investigator Project Contact , University of Sheffield (38.000%)
Project Contact , National Nuclear Laboratory Limited (27.000%)
Project Contact , Cera Dynamics Limited (25.000%)
Web Site
Objectives
Abstract The post operational clean out (POCO) of the highly active liquor storage tanks at Sellafield site will require the removal and immobilisation of residual solids from the heel of the tanks. The solids are expected to contain high levels of molybdenum and zirconium which are insoluble fission by-products. Some of the older highly active liquor storage tanks will require washing and stripping of the compacted solids with an alkali reagent due to a lack of engineered methods of solids agitation, one of the preferred reagents is sodium carbonate solution. Both molybdenum and sodium have limited solubility in the current glass matrix used for immobilisation of high level waste (HLW) in the UK. This project aims to address this issue by developing a new and improved glass formulation and method of delivering the glass forming additives into the existing UK vitrification process. This will ultimately reduce the volume of HLW requiring final disposal and accelerate the high level hazard reduction programme at Sellafield.The post operational clean out (POCO) of the highly active liquor storage tanks at Sellafield site will require the removal and immobilisation of residual solids from the heel of the tanks. The solids are expected to contain high levels of molybdenum and zirconium which are insoluble fission by-products. Some of the older highly active liquor storage tanks will require washing and stripping of the compacted solids with an alkali reagent due to a lack of engineered methods of solids agitation, one of the preferred reagents is sodium carbonate solution. Both molybdenum and sodium have limited solubility in the current glass matrix used for immobilisation of high level waste (HLW) in the UK. This project aims to address this issue by developing a new and improved glass formulation and method of delivering the glass forming additives into the existing UK vitrification process. This will ultimately reduce the volume of HLW requiring final disposal and accelerate the high level hazard reduction programme at Sellafield.The post operational clean out (POCO) of the highly active liquor storage tanks at Sellafield site will require the removal and immobilisation of residual solids from the heel of the tanks. The solids are expected to contain high levels of molybdenum and zirconium which are insoluble fission by-products. Some of the older highly active liquor storage tanks will require washing and stripping of the compacted solids with an alkali reagent due to a lack of engineered methods of solids agitation, one of the preferred reagents is sodium carbonate solution. Both molybdenum and sodium have limited solubility in the current glass matrix used for immobilisation of high level waste (HLW) in the UK. This project aims to address this issue by developing a new and improved glass formulation and method of delivering the glass forming additives into the existing UK vitrification process. This will ultimately reduce the volume of HLW requiring final disposal and accelerate the high level hazard reduction programme at Sellafield.The post operational clean out (POCO) of the highly active liquor storage tanks at Sellafield site will require the removal and immobilisation of residual solids from the heel of the tanks. The solids are expected to contain high levels of molybdenum and zirconium which are insoluble fission by-products. Some of the older highly active liquor storage tanks will require washing and stripping of the compacted solids with an alkali reagent due to a lack of engineered methods of solids agitation, one of the preferred reagents is sodium carbonate solution. Both molybdenum and sodium have limited solubility in the current glass matrix used for immobilisation of high level waste (HLW) in the UK. This project aims to address this issue by developing a new and improved glass formulation and method of delivering the glass forming additives into the existing UK vitrification process. This will ultimately reduce the volume of HLW requiring final disposal and accelerate the high level hazard reduction programme at Sellafield.
Publications (none)
Final Report (none)
Added to Database 01/10/15