F - MECHANICAL ENGINEERING
F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS
F04D - NON-POSITIVE-DISPLACEMENT PUMPS
G - PHYSICS
G21 - NUCLEAR PHYSICS
G21C - NUCLEAR REACTORS
F - MECHANICAL ENGINEERING
F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS
F04D - NON-POSITIVE-DISPLACEMENT PUMPS
F04D13/04 - the pump being fluid driven
F04D19/00 - Axial-flow pumps
F04D25/04 - the pump being fluid-driven {
F04D7/08 - the fluids being radioactive
G - PHYSICS
G21 - NUCLEAR PHYSICS
G21C - NUCLEAR REACTORS
G21C15/24 - Promoting flow of the coolant
G21C15/253 - for gases, e.g. blowers
G - PHYSICS
G21 - NUCLEAR PHYSICS
G21D - NUCLEAR POWER PLANT
G21D1/04 - Pumping arrangements
Y - NEW / CROSS SECTIONAL TECHNOLOGIES
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/00 - Energy generation of nuclear origin
Y02E30/30 - Nuclear fission reactors