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IPC 7
G21D-G21D00900

SECTION G – PHYSICS


G 21NUCLEAR PHYSICS; NUCLEAR ENGINEERING


G 21 DNUCLEAR POWER PLANT (electric or magnetic analogue computers, e.g. simulators, for nuclear physics G06G 7/54)



1/

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

1/

02.Arrangements of auxiliary equipment

1/

04.Pumping arrangements (by means within the reactor pressure vessel G21C 15/24; electrodynamic pumps H02K 44/02)


3/

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

3/

02.Manual control

3/

04.Safety arrangements (emergency protection of reactor G21C 9/00)

3/

06..responsive to faults within the plant (in the reactor G21C 9/00)

3/

08.Regulation of any parameters in the plant

3/

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

3/

12..by adjustment of the reactor in response only to changes in engine demand

3/

14...Varying flow of coolant

3/

16...Varying reactivity

3/

18..by adjustment of plant external to the reactor only in response to change in reactivity


5/

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

5/

02.Reactor and engine structurally combined, e.g. portable

5/

04.Reactor and engine not structurally combined

5/

06..with engine working medium circulating through reactor core

5/

08..with engine working medium heated in a heat exchanger by the reactor coolant

5/

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

5/

12...Liquid working medium vaporised by reactor coolant

5/

14....and also superheated by reactor coolant

5/

16....superheated by separate heat source


7/

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

7/

02.using magneto-hydrodynamic generators

7/

04.using thermoelectric elements (structural combination of fuel element with thermoelectric element G21C 3/40; thermoelectric elements per se H01L 35/00, H01L 37/00)


9/

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


  
 

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