Time

Available time for changeovers per period (T_a∆), also called available time for (internal) set-ups, represents the time per a given period day, shift, week, etc. during which a machine, equipment, or resource (i.e., room) can be changed over from one product to another, prepared for a different medical procedure, cleaned for another customer, etc. T_a∆, is foundational to every part every interval (EPEI), changeover distribution, and kanban sizing calculations.