Description: mathematical expectation of the operating time between failures; Name: mtbf
Description: expectation of the operating time between failures; Name: mean time between failures (MTBF)
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