Swedish steel company Alleima has received an order worth approximately SEK530m ($48.4m) from Korea’s Doosan Enerbility to supply 200 km of steam generator tubes for NuScale Power’s small modular reactor (SMR). Deliveries are scheduled during 2027 and 2028.

This is Alleima’s second order from Doosan Enerbility for NuScale Power following a similar order in June 2023. Deliveries for the first order were scheduled for 2024 and the NuScale Power Modules were “expected to be operational in 2029”, Alleima said.

The NuScale Power Module is a pressurised water reactor (PWR) with all the components for steam generation and heat exchange incorporated into a single unit, generating 77 MWe. It is the first SMR design to receive approval from the US Nuclear Regulatory Commission. NuScale offers the units as VOYGR plants with a range of modules: a VOYGR-12 power plant comprising 12 modules is capable of generating 924 MWe.

NuScale’s SMR is based on proven PWR technology in which Alleima’s current steam generator tubing alloys are used. NuScale’s SMR design is the first to be certified by the US Nuclear Regulatory Commission.

“We are thrilled to once again supply our steam generator tubes (STGs) to Doosan Enerbility and NuScale Power,” said Nigel Haworth, President of Business Unit Energy, Tube division at Alleima. “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. Intensity in discussions regarding the supply of steam generator tubes for SMRs is increasing globally, and as a front runner in this field, we are in a good position for these future power projects.” To meet a growing demand, Alleima has recently announced a capacity expansion with the reopening of one of its SGT facilities in Sandviken, Sweden.

Jongdoo Kim, CEO of Doosan Enerbility’s Nuclear Business Group, noted: “We are delighted to be embarking on our journey towards successful deployment of a commercial SMR together with Alleima, as we highly value Alleima’s extensive experience and market-proven products and solutions for steam generator tubes.”

In November 2023, NuScale and Utah Associated Municipal Power Systems agreed to cancel the Carbon Free Power Project (CFPP), which was to have featured six NuScale power modules generating 462 MWe of electricity and which scheduled for operation by 2029. NuScale had already placed its first upper reactor pressure vessel long-lead production order for the CFPP with Doosan Enerbility in March 2023.