Designs / dsn-catalogue-sealer-one

SEALER-One

Nuclear demonstration reactor planned after an electrically heated prototype. This is a dated NEA catalogue profile (assessment cutoff February 2025), not confirmation of current availability, a named deployment, or authorization. Capacity is not assigned where module and plant scope or output basis has not been reconciled.

Source snapshot: 2025-02-14 (NEA assessment cutoff). Source review does not establish current availability or a deployment.

Class
SMR
Technology
Lead-cooled fast reactor (LFR)
Coolant
lead
Spectrum
fast
Developer / vendor(s)
Blykalla
Module electrical
—
Module thermal
—
Inclusion basis
smr_by_design_class
Confidence
medium
Last verified
2026-10-02

Tracked deployment projects