Supply-Chain Integration: Inbound and Outbound

L7 tracks what the plant consumes (deuterium, lithium, components) and what it produces (tritium, helium-3, 14 MeV neutrons) as one governed material flow.

The plant as a material transformer

Both machines are, materially, transformers: they consume feedstock and components and produce isotopes, neutrons, and power. L7 supply-chain integration makes that flow legible end to end. Inbound, it tracks deuterium fuel, lithium for the breeder blanket, and the physical components a maintenance program needs. Outbound, it tracks the breeder's tritium (~4 kg/yr class), helium-3 (~1.97 kg/yr), and 14 MeV neutron services, plus the burner's firm power.

Coupled inbound and outbound

Inbound and outbound are not independent. Lithium supply and the chosen tritium breeding ratio lever (1.1, 1.5, or 1.8) together set how much tritium the breeder can produce and export versus retain. Helium-3 output from the breeder is, in turn, an inbound fuel for the burner fleet. L7 models this as a closed material graph so a change in one node propagates to the others rather than being tracked on separate spreadsheets.

Rows above are deuterium, lithium, and helium-3; columns are the machines. Deuterium feeds both; lithium feeds only the breeder blanket; helium-3 produced by the breeder feeds the burner. This coupling is why the fleet is a foundry-plus-fleet, not two unrelated product lines.

Every material node carries quantity, assay, and provenance so that outbound isotope shipments inherit a full chain of custody and inbound feedstock is quality-gated before use. The same records serve the compliance layer's byproduct-material accountancy without a separate data path.

Supply-chain integration runs today against modeled flows and the design-stage production rates. As units commission, the same graph tracks real material, and the honest framing holds: no isotope is promised for delivery before the breeder produces it at FOAK ~2030.