DIFF Subgroup
G21C 9/04 Means for suppressing fires
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Emergency protection arrangements structurally associated with the reactor > Means for suppressing fires
CPC:
Emergency protection arrangements structurally associated with the reactor (emergency cooling arrangements G21C15/18) > Means for suppressing fires
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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- G21C 9/06 Means for preventing accumulation of explosives gases, e.g. recombiners since 1990 IPC+CPC Available in IPC and CPC