WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

G21D　NUCLEAR POWER PLANT (electric or magnetic analogue computers, e.g. simulators, for nuclear physics G06G 7/54)

G21D 1/00 Details of nuclear power plant (control G21D 3/00)

G21D 1/003 ・{Nuclear facilities decommissioning arrangements (decontamination arrangements, treating radioactively contaminated material G21F 9/00)}

G21D 1/006 ・{primary side of steam generators (secondary side of steam generators F22B1, F22B35 or F22B37)}

G21D 1/02 ・Arrangements of auxiliary equipment

G21D 1/04 ・Pumping arrangements(within the reactor pressure vessel G21C 15/24; electrodynamic pumps H02K 44/02)

G21D 3/00 Control of nuclear power plant (control of nuclear reaction in general G21C 7/00)

G21D 3/001 ・{Computer implemented control}

G21D 3/008 ・{Man-machine interface, e.g. control room layout}

G21D 3/02 ・Manual control

G21D 3/04 ・Safety arrangements (emergency protection of reactor G21C 9/00)

G21D 3/06 ・・responsive to faults within the plant (in the reactor G21C 9/00)

G21D 3/08 ・Regulation of any parameters in the plant

G21D 3/10 ・・by a combination of a variable derived from neutron flux with other controlling variables, e.g. derived from temperature, cooling flow, pressure

G21D 3/12 ・・by adjustment of the reactor in response only to changes in engine demand

G21D 3/14 ・・・Varying flow of coolant

G21D 3/16 ・・・Varying reactivity

G21D 3/18 ・・by adjustment of plant external to the reactor only in response to change in reactivity

G21D 5/00 Arrangements of reactor and engine in which reactor-produced heat is converted into mechanical energy

G21D 5/02 ・Reactor and engine structurally combined, e.g. portable

G21D 5/04 ・Reactor and engine not structurally combined

G21D 5/06 ・・with engine working medium circulating through reactor core

G21D 5/08 ・・with engine working medium heated in a heat exchanger by the reactor coolant

G21D 5/10 ・・・Liquid working medium partially heated by reactor and vaporised by heat source external to the core, e.g. with oil heating

G21D 5/12 ・・・Liquid working medium vaporised by reactor coolant

G21D 5/14 ・・・・and also superheated by reactor coolant

G21D 5/16 ・・・・superheated by separate heat source

G21D 7/00 Arrangements for direct production of electric energy from fusion or fission reactions (obtaining electric energy from radioactive sources G21H 1/00)

G21D 7/02 ・using magneto-hydrodynamic generators {(MHD-generators with thermodynamic cycles F02C 7/00; magneto-hydrodynamic generators H02K 44/08)}

G21D 7/04 ・using thermoelectric elements {or thermoionic converters}(structural combination of fuel element with thermoelectric element {or with thermoionic converters}G21C 3/40{, G21H 1/10}; thermoelectric elements per se H01L 35/00, H01L 37/00)

G21D 9/00 Arrangements to provide heat for purposes other than conversion into power, e.g. for heating buildings

G21D 2003/00 Control of nuclear power plant (control of nuclear reaction in general G21C 7/00)

G21D 2003/001 ・{Computer implemented control}

G21D 2003/002 ・・Core design; Core simulations

G21D 2003/004 ・・Fuel shuffle simulations

G21D 2003/005 ・・Thermo-hydraulic simulations

G21D 2003/007 ・Expert systems

G21D 2010/00 Protection of plant or environment from mutual hazards : means for monitoring the effects of plant or environment upon each other