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The scalability of nuclear energy is often limited by boutique fuel and heavy-forging supply chains. ReCore explores whether a serial, modular manufacturing model — using existing material classes and factory content — could reduce those bottlenecks. That is central to the Why?: schedule, sovereignty, and constructability are design drivers, not afterthoughts. This page is part of an engineering hypothesis, not a claim that serial production is already proven for this plant.
A major bottleneck for some advanced reactors is specialised fuel that lacks industrial scale.
Many proposed SMRs and advanced designs rely on:
ReCore aims to reduce dependence on those bottlenecks by using materials already in the nuclear system (after processing):
Exact global tonnages are order-of-magnitude public figures and change with inventories; the design point is use existing stocks, not invent a new fuel form. See Fuel Science.
Long-term storage of spent fuel and separated materials carries security, monitoring, and fiscal costs. A closed-cycle path is intended to turn portions of those inventories into fuel feedstock — it does not instantly eliminate every storage site or security obligation.
Once recycle capacity and a reactor fleet exist, multi-recycle could reduce dependence on continuous enrichment imports for equilibrium cores. That is a fleet fuel-cycle goal (see ReCore-Processing, sensitive to throughput, losses, and licensing — not a FOAK day-one fact.
ReCore explores shifting work from unique mega-projects toward factory-oriented modules — a construction hypothesis aligned with nuclear’s main cost driver: schedule and site risk.
LWR fleets depend on thick high-pressure vessels that only a few forges can produce.
Primary Na→N₂ hardware is intended as factory bayonet modules: a nuclear-grade seamless straight tube (smooth bore, ~80 bar N₂ inside, sodium on the shell), one top tubesheet, and a removable stainless swirl cartridge. The screening reference is Alloy 709, because creep near ~600 °C at ~80 bar is what allows a wall of about 1.5 mm. Alloy 709 tube is a thin commercial supply; the code case is open. Alloy 800H tube is the item a mill will actually sell, and it is already in high-temperature code practice. Its nickel content makes sodium mass transfer the qualification that has to be passed before it replaces 709. No vendor ships this Na–N₂ bayonet as a catalog item either way. Cartridge withdrawal, argon-plenum seals, and seismic guides are part of that qualification, not a solved inspection story.
Brayton hardware splits. The recuperator is a diffusion-bonded PCHE battery: etched 316L-class plate, an industrial product in gas service, with the open work in manifolds and in a slow warmup of a stiff block. Intercoolers and the precooler are catalog plate-and-shell or TEMA gas-to-water units at compressor temperature. Printed TPMS hardware is a candidate for those coolers only. It is not the recuperator and not the sodium boundary. Vessel and piping remain 316LN. Cladding baseline is HT9 (upgrade path at reload: e.g. P92 / NF616 / Grade 92) — see Advanced Engineering.
Not “cheaper by assertion.” Possible reductions if modular atmospheric construction and existing-stock fuel work: forgings, site duration, enrichment dependence. Possible increases: sodium systems, a metal fuel-fabrication line, physical protection of fresh plutonium fuel, pyro hubs, FOAK licensing, integration. No capital cost, schedule, or fee for taking plutonium is estimated on these pages. Balanced discussion also on main.
ReCore investigates whether multiplicity (many identical modules) and factory content can decouple nuclear deployment from twentieth-century monolithic supply chains. That remains to be demonstrated for this architecture.
Why? · ReCore-Reactor · ReCore-Processing