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PCE
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DIFF Subgroup
G21C 3/16

Details of the construction within the casing

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements > Fuel elements > Constructional details > Details of the construction within the casing

CPC:

Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements > Fuel elements > Constructional details > Details of the construction within the casing

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G21C 3/17 Means for storage or immobilisation of gases in fuel elements since 1990 IPC+CPC Available in IPC and CPC
  • G21C 3/18 Internal spacers or other non-active material within the casing, e.g. compensating for expansion of fuel rods or for compensating excess reactivity (interlayers G21C3/20) IPC+CPC Available in IPC and CPC
  • G21C 3/20 with coating on fuel or on inside of casing; with non-active interlayer between casing and active material IPC+CPC Available in IPC and CPC