Doosan places order with Sweden’s Alleima to supply steam generator tubes for NuScale SMRs

23 June 2023

Swedish firm Alleima (formerly Sandvik Materials Technology) has been awarded an order from South Korea's Doosan to supply steam generator tubes for NuScale's small modular reactors (SMRs). Alliema says the tubes will be installed in one of the first VOYGR SMR power plants. The order from Doosan for approximately 200 kilometres of steam generator was booked in the second quarter of 2023 and deliveries are scheduled during 2024.

NuScale’s VOYGR SMRs are powered by the NuScale Power Module, a small pressurised water reactor (PWR) that can each generate 77 MWe or 250 MWt (gross). These can be scaled to meet customer needs through flexible configurations up to 924 MWe (12 modules) of output. NuScale’s design is the first and only SMR to be certified by the US Nuclear Regulatory Commission.

Alleima’s current steam generator tubing alloys are used in PWRs.

“We are thrilled this is finally happening and are proud to announce this breakthrough order for SMRs,” said Nigel Haworth, Acting President of Alleima Tube division. “As this technique, based on pressurised water-cooled reactor technology, is closely linked to current nuclear technology, we see a great potential for significant growth in the coming years.”

Jongdoo Kim, CEO of Doosan Enerbility’s Nuclear Business Group welcomed co-operation with Alleima in progressing deployment of the first commercial “We highly value Alleima's extensive experience and market-proven products and solution in steam generator tubes”, he noted.

In May, Doosan began forging the first module that will be deployed as part of a NuScale VOYGR-6 SMR for the Carbon Free Power Project (CFPP) in the USA. NuScale placed its first order with Doosan Enerbility at the end of 2022 for the upper reactor pressure vessel long-lead material production. In 2019, Doosan Enerbility (then Doosan Heavy Industries & Construction) signed a collaboration agreement with NuScale for the supply of NuScale Power Modules and other equipment.

Image: Rendering of a NuScale VOYGR plant (courtesy of NuScale)

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