Decommissioning and Lifecycle
A fixed installation must be planned for its whole life, including eventual decommissioning of activated structures and management of residual materials.
Plan for the whole life
Resilient power is a long-term commitment, and a responsible design accounts for the full lifecycle: construction, operation, maintenance, upgrades, and eventual decommissioning. For a fusion installation this includes managing structures activated by the 5.44% neutron fraction at end of life.
What decommissioning involves
- Managing structural materials activated over the machine's life.
- Recovering and accounting for residual helium-3 and tritium inventory.
- Dismantling magnets, cryogenics, and shielding safely.
- Restoring or repurposing the site.
A comparatively favourable profile
Because D–3He carries only a small neutron fraction, the volume of activated material at decommissioning is far smaller than for a D–T fusion plant or a fission reactor, and there is no long-lived spent-fuel stream. Material choices during design (low-activation alloys, informed by 14 MeV neutron testing from the breeder) can reduce it further.
Lifecycle planning is a mark of a serious, honest design. It is included here to show that resilient sovereign power is scoped as a full-life capability — not only how it starts, but how it is maintained and responsibly retired — even while the machine itself remains at the design-and-simulation stage.
Planned retirement is a mark of seriousness
Because D–3He carries only a small neutron fraction, the volume of activated material at end of life is far smaller than for a D–T plant or a fission reactor, with no long-lived spent-fuel stream. Low-activation material choices, informed by 14 MeV neutron testing from the breeder, reduce it further. Scoping the full life — not only how power starts but how it is responsibly retired — is part of an honest design.