In October 2012, Dominion Energy announced it was closing the Kewaunee nuclear power plant, a two-loop 574-MWe pressurized water reactor located about 27 miles southeast of Green Bay, Wis., on the western shore of Lake Michigan. At the time, Dominion said the plant was running well, but that low wholesale electricity prices in the region made it uneconomical to continue operation of the single-unit merchant power plant.

The OPTIMUS-H transportation cask from NAC International. (Photo: NAC)

NAC International announced that the Nuclear Regulatory Commission has certified a highly shielded version of the company’s OPTIMUS (Optimal Modular Universal Shipping) transportation package for radioactive materials and waste. NAC’s OPTIMUS-H is now approved under 10 CFR Part 71 with Certificate of Compliance (CoC) USA/9392/B(U)F-96, effective Aug. 5, 2024.

The OPTIMUS-H CoC follows licensing approvals of the cask in Canada and Australia. Previously, the lightweight version of the OPTIMUS package, OPTIMUS-L, received certification from the NRC and the Canadian Nuclear Safety Commission.

NAC unveiled its first OPTIMUS to the public at the 2020 Waste Management Conference in Phoenix. Since then, NAC has delivered 22 OPTIMUS-L and nine OPTIMUS-H systems to support North American packaging and transportation projects.

Used nuclear fuel and radioactive materials packaging company NAC International has established a Canadian subsidiary with the acquisition of all assets of Niagara Energy Products (NEP). Terms of the acquisition, announced on June 19, were not disclosed.

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GEH’s BWRX-300 SMR technology chosen for Darlington clean energy project

GE Hitachi Nuclear Energy has been selected by Ontario Power Generation as technology partner for the Darlington site's new nuclear plant project. GEH will work with OPG to deploy a BWRX-300 small modular reactor as early as 2028 at the Darlington site in Canada.

■ NuScale Power and Kazakhstan Nuclear Power Plants LLP have signed a memorandum of understanding to explore the deployment of NuScale VOYGR power plants in Kazakhstan. KNPP specializes in the development of nuclear power plant construction in Kazakhstan. The agreement calls for a sharing of nuclear and technical expertise between NuScale and KNPP. Under the MOU, NuScale will support KNPP’s evaluation of NuScale’s SMR technology, including nuclear power plant engineering, construction, commissioning, operation and maintenance, and project-specific studies and design work.

■ PKN ORLEN and Synthos Green Energy have signed an agreement to set up a joint venture, ORLEN Synthos Green Energy, with a goal to prepare and commercialize small nuclear reactor technology, particularly GE Hitachi Nuclear Energy’s BWRX-300 reactors, in Poland. Related, BWXT Canada Ltd. signed a letter of intent with Synthos and GEH for the manufacture of key SMR components for Poland.

Several lead test rods of Westinghouse’s EnCore accident tolerant fuel recently arrived at Oak Ridge National Laboratory for post-irradiation examination over the next year in support of the Nuclear Regulatory Commission’s licensing process. The rods were installed in 2019 in Exelon’s Byron-2, a 1,158-MWe pressurized water reactor, and were removed in fall 2020 and prepared for shipment to ORNL.