General engineering work assessing and describing the project characteristics for a not-yet defined site including cost, supplies, construction means and timing, and definition of all necessary authorisations based on goals and specification by a possible project owner

Report on all necessary elements including timing, regulatory and financial conditions enabling to invest in detailed design work

Boiling water reactor

Heat transport usually with light (normal) water or vapour

Assessment of hardware (materials including fuel) and software (functional system models) proving the feasibility and if necessary based on mock-ups and test programmes

The conceptual design defines the proposed fissionable materials and nuclear reactions, neutron economy, fuel cycle from source to wastes, safety features and deployment from FOAK to NOAK.

Engineering work describing the products and conditions for the various manufacturers in the supply chain based on the specifications defined by the project owner

Kinetic neutron energy of 1…20 Mev

Kinetic energy of a not-moderated particle (neutron spectrum)

Molten salt reactor with fuel element form consisting of prismatic blocks

Molten salt reactor

Primary heat transport: molten salt - often F compounds

Fluoride salt-cooled high-temperature reactor

Primary heat transport: molten Li2BeF4 salt

Report on the actually realised design details of all components

The final design details are checked and compiled during the realisation of a specific project based on systematic feedback form suppliers.

Gas cooled reactor

Primary heat transport: mostly CO2 or helium gas

Gas-cooled fast reactor type

Primary heat transport: most often helium gas

Crystalline allotrope of element carbon

Special quality characteristics as moderator

High-assay low enriched uranium

Uranium enriched to 5…20 percent U-235

Heat transfer device using phase transition