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♦)) SNC • LAVALIN Nuclear Natural Equivalent

Powering the future with recycled uranium-based fuel

Recycling Nuclear Spent Fuel NUE Implementation in CANDU Reactors Natural Uranium Equivalent (NUE) fuel is an innovative fuel designed NUE fuel behaves similarly to natural uranium fuel and can be used for to work in synergy with current and planned spent fuel reprocessing full-core implementation in existing or new CANDU reactors. The fuel technologies around the globe. It blends recycled uranium (RU) with fexibility of CANDU reactors allows for the use of multiple advanced (DU) to create NUE fuel powder that is used to including NUE. This fexibility is due to the reactors’ neutron fabricate fuel pellets and CANDU® reactor fuel bundles. economy, fuel channel design versatility and simplicity of fuel bundle design. Comprehensive analyses and in-reactor testing proved that the SNC-Lavalin – Reliable, Proven reactor core behavior remains unchanged when fuelled with NUE. To use NUE as a substitute for natural uranium, only a few changes are With more than a century of experience in the power sector, and over required to current operating reactor designs, safety parameters and 60 years invested in the nuclear industry, SNC-Lavalin develops nuclear licensing case. projects, products and services tailored to our clients’ needs. Safety, quality, innovation and excellence in project execution are the values we live by. We strive to think like an operator to bring you solutions to Benefts of using NUE fuel in CANDU reactors include: issues before they arise. > Front-end fuel cycle cost reduction, as the cost of NUE is expected to be signifcantly lower than that of natural uranium Proven Success > Re-introduction of what would otherwise be waste products into the energy stream for electricity production Since 2008, Canada and China have proven, through an in-core irradiation demonstration in the Qinshan CANDU reactors, that NUE > Diversifcation and independence of resources from the natural fuel can be used successfully as a natural uranium substitute. This uranium market partnership has completed a full-core commercial design project, > Reduction in spent fuel burden also reduces the need for monitoring and a full-core conversion to NUE fuel in the existing Qinshan CANDU and storage reactors is planned in the near future. > Elimination of the need for re-enrichment of RU > Increased regional overpower protection (ROP) margins

> Synergistic relationship with other technologies, which increases the sustainability of ♦)) SNC • LAVALIN Nuclear Natural Uranium Equivalent Fuel

Powering the future with recycled uranium-based fuel

Recycling Nuclear Spent Fuel NUE Implementation in CANDU Reactors Natural Uranium Equivalent (NUE) fuel is an innovative fuel designed NUE fuel behaves similarly to natural uranium fuel and can be used for to work in synergy with current and planned spent fuel reprocessing full-core implementation in existing or new CANDU reactors. The fuel technologies around the globe. It blends recycled uranium (RU) with fexibility of CANDU reactors allows for the use of multiple advanced depleted uranium (DU) to create NUE fuel powder that is used to fuels including NUE. This fexibility is due to the reactors’ neutron fabricate fuel pellets and CANDU® reactor fuel bundles. economy, fuel channel design versatility and simplicity of fuel bundle design. Comprehensive analyses and in-reactor testing proved that the SNC-Lavalin – Reliable, Proven reactor core behavior remains unchanged when fuelled with NUE. To use NUE as a substitute for natural uranium, only a few changes are With more than a century of experience in the power sector, and over required to current operating reactor designs, safety parameters and 60 years invested in the nuclear industry, SNC-Lavalin develops nuclear licensing case. projects, products and services tailored to our clients’ needs. Safety, quality, innovation and excellence in project execution are the values we live by. We strive to think like an operator to bring you solutions to Benefts of using NUE fuel in CANDU reactors include: issues before they arise. > Front-end fuel cycle cost reduction, as the cost of NUE is expected to be signifcantly lower than that of natural uranium Proven Success > Re-introduction of what would otherwise be waste products into the energy stream for electricity production Since 2008, Canada and China have proven, through an in-core irradiation demonstration in the Qinshan CANDU reactors, that NUE > Diversifcation and independence of resources from the natural fuel can be used successfully as a natural uranium substitute. This uranium market partnership has completed a full-core commercial design project, > Reduction in spent fuel burden also reduces the need for monitoring and a full-core conversion to NUE fuel in the existing Qinshan CANDU and storage reactors is planned in the near future. > Elimination of the need for re-enrichment of RU > Increased regional overpower protection (ROP) margins > Synergistic relationship with other nuclear reactor technologies, which increases the sustainability of nuclear power Abundant Resources Toward Closing the Fuel Cycle NUE fuel capitalizes on the abundant stock of RU and DU worldwide, which is mostly kept in storage. The world’s stock of DU is estimated to be 1.2 million tonnes and is expected to grow as nuclear power capacity increases. f...... ~ Approximately 90,000 tonnes of RU have Spent Fuel already been reprocessed from commercial power reactors, and the current global fuel PWR recycling capacity is estimated at 4,000 tonnes per year. The isotopic compositions of RU used in NUE Enrichment fuel varies depending on its initial enrichment, Natural Reprocessing fuel exit burn-up, type of fuel used and Uranium subsequent processing. Therefore, we have Recycled developed a proprietary technology to satisfy Uranium NUE technical specifcation requirements and Natural to optimize the amount of RU and DU used to Uranium NUE produce NUE fuel. This technology takes large · · ·· · ·· · · ·· ·· · · ·· ·· ·L➔---.&...----CANDU • . inventories of diverse RU and DU stockpiles r.. , Uranium Mine and determines the precise mixing strategy, Depleted while reducing human error. Uranium :...... ·

Please contact us to discuss how our expertise can support your needs. [email protected]

CANDU ® - Registered trademark of Atomic Energy of Canada Ltd. (AECL), used under licence by Candu Energy Inc., a Member of the SNC-Lavalin Group ♦)) Candu® SNC • LAVALIN An SNC-Lavalin Technology www.snclavalin.com/nuclear Abundant Resources Toward Closing the Fuel Cycle NUE fuel capitalizes on the abundant stock of RU and DU worldwide, which is mostly kept in storage. The world’s stock of DU is estimated to be 1.2 million tonnes and is expected to grow as nuclear power capacity increases. Enriched Uranium f...... ~ Approximately 90,000 tonnes of RU have Spent Fuel already been reprocessed from commercial power reactors, and the current global fuel PWR recycling capacity is estimated at 4,000 tonnes per year. The isotopic compositions of RU used in NUE Enrichment fuel varies depending on its initial enrichment, Natural Reprocessing fuel exit burn-up, type of fuel used and Uranium subsequent processing. Therefore, we have Recycled developed a proprietary technology to satisfy Uranium NUE technical specifcation requirements and Natural to optimize the amount of RU and DU used to Uranium NUE produce NUE fuel. This technology takes large · · ·· · ·· · · ·· ·· · · ·· ·· ·L➔---.&...----CANDU • . inventories of diverse RU and DU stockpiles r.. , Uranium Mine and determines the precise mixing strategy, Depleted while reducing human error. Uranium :...... ·

Please contact us to discuss how our expertise can support your needs. [email protected]

CANDU ® - Registered trademark of Atomic Energy of Canada Ltd. (AECL), used under licence by Candu Energy Inc., a Member of the SNC-Lavalin Group ♦)) Candu® SNC • LAVALIN An SNC-Lavalin Technology www.snclavalin.com/nuclear