Description: period of time during which a system or component is operational and in service, but not in use; Name: it
Description: Time interval throughout which an item is in an idle state; Name: Idle time
Description: internal volume of a compartment, including the volume of nozzles to the first connection (flange, coupling, screwed connection, weld seam) but excluding the volume of internal structures (e. g. baffles, agitators); Name: Filling volume of the equipment