Westinghouse, Nordion (a Sotera Health company), and PSEG Nuclear announced key milestones in their joint initiative to establish the first commercial-scale production of Cobalt-60 in US pressurised water reactors. Cobalt-60 is a critical isotope used to sterilise medical equipment and food products and is currently produced almost exclusively in Canadian CANDU reactors. Producing Cobalt-60 in US PWRs diversifies the global supply chain for this essential isotope and provides additional revenue streams for US nuclear plant operators — improving the economics of existing reactor operation.