NRIC Reactor Supplemental Shielding Construction

2026-11-03

I . INTRODUCTIONBattelle Energy Alliance , LLC ( BEA ), Management & Operating Contractor of the U . S . Department of Energy ( DOE ) owned Idaho National Laboratory ( INL ), is seeking an Expression of Interest ( EOI ) from prospective offerors to support construction of the National Reactor Innovation Center ( NRIC ) Reactor Supplemental Shielding ( RSS ) at the INL . II . PROCESSBEA is seeking qualified firms to compete for the construction contract in support of the NRIC RSS project . As determined by BEA , responders to this EOI may receive a Request for Proposal ( RFP ) that will require detailed technical and price proposals be provided for evaluation and ranking under a source selection process . Interested firms are advised that RFP release is anticipated in January 2026 and the source selection / award decision is anticipated in February 2026 . The contract award type will be firm - fixed price . All construction work on the INL site is subject to the Davis - Bacon Act and the INL Site Stabilization and Jurisdictional Agreements ( available at http :// sitelaborcoordinator . com / index . php / downloads /); both of these agreements are enforced in accordance with agreements set forth between the Construction Trades , DOE , and BEA . III . PROJECT DESCRIPTIONThe RSS will be constructed for the Demonstration of Microreactor Experiments ( DOME ) testbed at the Materials and Fuels Complex ( MFC ) at the INL . MFC is located approximately 33 miles west of Idaho Falls , Idaho . The RSS is a modular high - density concrete ( 235 pcf ) structure that will provide radiation shielding from microreactor experiments inside of DOME . The RSS will be made of large precast concrete roof , wall , and shielding blocks weighing 50 - 70 tons each . The RSS will be installed in DOME on the Reactor Anchoring Platform ( RAP ). The RSS wall blocks will be bolted to the RAP and roof blocks will be bolted to the wall blocks . The shutdown and operational shielding blocks are to be stacked in front of the wall and roof blocks . The RSS project includes a means of transferring ~ 100 kW of heat from water tanks inside the RSS to large facility heat removal system . The tanks will connect an exterior expansion tank and heat exchanger & pump skid attached to the RSS . The Reactor Anchoring Platform and interior water tanks are NOT part of the scope of this EOI , but the expansion tank , skid , piping , and associated instrument and controls ( I & C ) equipment are included . The design of the RSS blocks , expansion tank , and general skid , piping , and I & C layout has already been completed . This scope of work comprises the fabrication of the all the RSS components , the final layout and field routing of the skid and piping , and the installation of the RSS system . Transportation of the RSS components to MFC and insertion into DOME are also include this work . The DOME 75 - ton polar crane may be used for the RSS assembly and installation . See attachment for more detail . Work Summary • Reactor Supplemental Shielding ( RSS ) fabrication of :- precast block - expansion tank - heat exchanger & pump skid • RSS piping & I & C routing • RSS component preinstallation fit up • Transportation of all RSS components to MFC • Installation and commissioning inside of DOMEIV . SUBMITTALInterested firms are requested to provide expressions of interest to the undersigned by close - of business on December 23rd , 2025 . Included must be sufficient written information confirming the responder ’ s qualifications that addresses each of the following criteria :• Experience with construction and hold all applicable welding certifications for piping installation Capability to meet applicable safety , regulatory and code compliance as listed .• Agreement to have a quality program that is consistent with the guidelines of ISO 9001 - 2015 and ANSI / ASQC C1 - 1996 General Requirements for a Quality Program • Be capable of meeting QA audit requirements to be added to the INL QSL . Note that responses must be no more than 20 pages in length . Only potentially qualified offerors , as determined by BEA , will receive the RFP for the project . If you have questions , need additional information , or need to speak with a BEA Point of Contact , please contact Braxton Mouser at 208 - 526 - 4165 or Chase Egbert at ( 208 ) 526 - 8564 or via email at Braxton . Mouser @ inl . gov or Chase . Egbert @ inl . gov . Technical questions must be submitted in writing via email .

Idaho

2026-05-11