Definition
REFA time type that describes target times for process sections, including the reference (order) quantity and quantity unit, that are carried out by humans and operating means. They comprise the representative description of the process section and of the conditions for execution, e.g. the work system. For humans it contains the work order time T including setup time tr and execution time ta, for the operating means it contains the occupancy time TbB including the operating means setup time trB and the operating means execution time taB.
Bettina Dirks
