US-based GE Hitachi Nuclear Energy (GEH) has awarded a contract to BWX Technologies (BWXT) to manufacture the reactor pressure vessel (RPV) for the first BWRX-300 small modular reactor to be constructed at Ontario Power Generation’s (OPG) Darlington nuclear site in Ontario, Canada.

The RPV is the largest component within the BWRX-300. GEH previously awarded a contract to Lynchburg, Virgina-based BWXT for RPV-related engineering analysis, design support and manufacturing and procurement preparations. BWXT was the first company to join GEH’s BWRX-300 qualified supplier group.