|  | G |
SECTION G — PHYSICS

NUCLEONICS

|  | G21 |
NUCLEAR PHYSICS; NUCLEAR ENGINEERING

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

|  | G21D 1/00 |
Details of nuclear power plant (control Fulltext... Hierarchy... Expanded...G21D 3/00)

|  | G21D 1/02 |
· | Arrangements of auxiliary equipment

|  | G21D 1/04 |
· | Pumping arrangements (by means within the reactor pressure vessel Fulltext... Hierarchy... Expanded...G21C 15/24; electrodynamic pumps Fulltext... Hierarchy... Expanded...H02K 44/02)

|  | G21D 3/00 |
Control of nuclear power plant (control of nuclear reaction in general Fulltext... Hierarchy... Expanded...G21C 7/00)

|  | G21D 3/02 |
· | Manual control

|  | G21D 3/04 |
· | Safety arrangements (emergency protection of reactor Fulltext... Hierarchy... Expanded...G21C 9/00)

|  | G21D 3/06 |
· · | responsive to faults within the plant (in the reactor Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...G21H 1/00)

|  | G21D 7/02 |
· | using magneto-hydrodynamic generators

|  | G21D 7/04 |
· | using thermoelectric elements (structural combination of fuel element with thermoelectric element Fulltext... Hierarchy... Expanded...G21C 3/40; thermoelectric elements per se Fulltext... Hierarchy... Expanded...H01L 35/00, Fulltext... Hierarchy... Expanded...H01L 37/00)

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