Description: duration of operation between consecutive failures of a functional unit under given conditions; Name: otbf
Description: Operating time between consecutive failures ; Name: Operating time between failures
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