Reference number : GC-2017-Q4-00864, amendment number : , agreement type : G, recipient legal name : Jodoin, Bertrand (University of Ottawa)|Jodoin, Bertrand (Université d’Ottawa), recipient country : CA, recipient province : nan, recipient city : Ontario, recipient postal code : nan, program name english : Collaborative Research and Development Grants - Project, program name french : Subventions de recherche et développement coopérative - projet, program purpose english : Canadas nuclear reactors have produced almost 2.6 million used fuel bundles over the last decades. This_x000D_
number is expected to double over the next 40 years. Only very recently has Canada adopted a course of action_x000D_
to deal with the long-term containment of the spent nuclear fuel, with the Nuclear Waste Management_x000D_
Organization (NWMO) responsible for designing and implementing Canada's plan. Assessment of long-term_x000D_
safe and secure management options has led to the development of a centralized containment and isolation of_x000D_
Canada's used fuel in a deep geological repository (DGR). What differentiates the Canadian design from others_x000D_
is the corrosion-resistant outer copper coating that is proposed. As opposed to existing dual-shell overpack_x000D_
designs (thick copper sleeve on steel shell), the corrosion resistant copper coating is thinner (3 mm thick) and_x000D_
integrally bonded to the steel shell. This design reduces drastically the amount of copper required for each UFC_x000D_
and mechanical stresses on the steel shell. NWMO has selected electrodeposition to produce the copper_x000D_
coatings on the steel vessels prior to loading them with used nuclear fuel bundles and closing them with a_x000D_
copper coated cap end. Cold Gas Dynamic Spraying (CGDS or cold spray) was selected as the preferred_x000D_
technique to complete the copper coating at the containment vessel and cap end junction (closure weld zone)._x000D_
NWMO is still seeking a new innovative way to alleviate the use of helium in the CGDS process. An_x000D_
alternative approach to enhance CGDS coating adhesion is the control of substrate temperature prior to particle_x000D_
impact. This proposal aims to build on few limited studies that have highlighted the potential of substrate_x000D_
preheating as a surface preparation method prior to CGDS. It is envisioned that proper substrate heating prior_x000D_
to applying copper coating on steel by CGDS could result in enhanced coating adhesion strength (from_x000D_
increased mechanical and metallurgical bonds) and allow the use of nitrogen only as the process gas. This_x000D_
would represent a safe, highly efficient and cost-effective solution for the CGDS coating of the closure weld zone., program purpose french : Canadas nuclear reactors have produced almost 2.6 million used fuel bundles over the last decades. This_x000D_
number is expected to double over the next 40 years. Only very recently has Canada adopted a course of action_x000D_
to deal with the long-term containment of the spent nuclear fuel, with the Nuclear Waste Management_x000D_
Organization (NWMO) responsible for designing and implementing Canada's plan. Assessment of long-term_x000D_
safe and secure management options has led to the development of a centralized containment and isolation of_x000D_
Canada's used fuel in a deep geological repository (DGR). What differentiates the Canadian design from others_x000D_
is the corrosion-resistant outer copper coating that is proposed. As opposed to existing dual-shell overpack_x000D_
designs (thick copper sleeve on steel shell), the corrosion resistant copper coating is thinner (3 mm thick) and_x000D_
integrally bonded to the steel shell. This design reduces drastically the amount of copper required for each UFC_x000D_
and mechanical stresses on the steel shell. NWMO has selected electrodeposition to produce the copper_x000D_
coatings on the steel vessels prior to loading them with used nuclear fuel bundles and closing them with a_x000D_
copper coated cap end. Cold Gas Dynamic Spraying (CGDS or cold spray) was selected as the preferred_x000D_
technique to complete the copper coating at the containment vessel and cap end junction (closure weld zone)._x000D_
NWMO is still seeking a new innovative way to alleviate the use of helium in the CGDS process. An_x000D_
alternative approach to enhance CGDS coating adhesion is the control of substrate temperature prior to particle_x000D_
impact. This proposal aims to build on few limited studies that have highlighted the potential of substrate_x000D_
preheating as a surface preparation method prior to CGDS. It is envisioned that proper substrate heating prior_x000D_
to applying copper coating on steel by CGDS could result in enhanced coating adhesion strength (from_x000D_
increased mechanical and metallurgical bonds) and allow the use of nitrogen only as the process gas. This_x000D_
would represent a safe, highly efficient and cost-effective solution for the CGDS coating of the closure weld zone., agreement title english : Development of a sustainable solution for the elimination of helium in copper cold spray process for used nuclear fuel containers, agreement title french : Development of a sustainable solution for the elimination of helium in copper cold spray process for used nuclear fuel containers, agreement number : CRDPJ, agreement value : 71426.0, agreement start date : 2018-03-07, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2019-2020)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2019-2020)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada