Tritium Accountancy and Safeguards

Every gram of tritium is tracked by mass balance and assay; accountancy underpins safety, regulatory compliance, and honest product reporting.

Tracking a valuable, hazardous material

Tritium is radioactive, mobile, and strategically controlled, so a foundry must account for it precisely. Accountancy is the continuous mass balance of tritium across the whole system: what is bred, what is received as startup charge, what is burned, what decays to helium-3, what is held, and what is shipped.

The balance must close within tight tolerance. A discrepancy between expected and measured inventory — material unaccounted for — is both a safety flag (possible leak or holdup) and a regulatory concern. Assay techniques such as calorimetry (measuring decay heat), gas analysis, and getter-bed inventory measurement establish the actual holdings.

Why it matters for products

• Honest product figures require verified inventory, not estimates
• Decay accounting ties the tritium and helium-3 balances together
• Holdup shows up as unaccounted material and drives loss reduction
• Safeguards and licensing require demonstrable control of the material

Regulatory framing

Hyperion's licensing pathway treats bred tritium and helium-3 as byproduct material, which places accountancy at the center of compliance. Rigorous tracking is what lets Kronos state product figures as measured quantities once FOAK operates, rather than as projections. Until then, the inventory model is a design-and-simulation construct.

This page describes a design-and-simulation study, not a built machine. Construction begins Q2 2027; first-of-a-kind (FOAK) first tritium is targeted near 2030. No net-gain claim is made before FOAK.