tradeoffs v Flow Velocity: A measure of throughput/productivity v Flow Load: Amount of Work-in-Progress (WIP) v Flow Time: A measure of speed v Flow Efficiency: Work vs. wait ratio 5FLOW METRICS: Why, How, + considerations
indicator Flow Load: All the partially completed work. All the work-in-progress (WIP) in the value stream Benefit: Provokes convo’s on WIP limits that act as enabling constraint.
Queuing Theory allows us to quantify the relationship between wait times and capacity utilization. Wait times increase exponentially as utilization approaches 100%. Queuing Theory: Applied statistics that studies waiting lines If the goal is speed, consider managing work by queues. http://reinertsenassociates.com/books/
work is in an active state vs. a wait state. Why Flow Efficiency - Expose wait time Benefit: Learn how much wait time exists in Value Stream to drive discussion to improve decisions on prioritization, capacity & utilization.