Meaning
A process metric that measures the speed at which defective products move through the repair cycle and return to the main assembly line. Monitoring rework queue velocity ensures that non-conforming items do not languish in storage areas where they can become obsolete or damaged. It acts as an indicator of the efficiency of the repair department.
Flow Measurement
The metric is calculated by tracking the time elapsed between when a unit enters the defect queue and when it is certified as repaired. High velocity indicates a responsive repair process with minimal delays and clear documentation. Low velocity points to resource constraints, unclear instructions in the salvage area, or a lack of specialized repair equipment.
Boosting this speed prevents material bottlenecks.
Inventory Control
Maintaining a rapid flow of units through repair prevents the build-up of work-in-progress inventory in the quarantine zones. This control is used because excessive inventory occupies valuable floor space and complicates material tracking. Efficient queues reduce the risk of part mix-ups.
Predictable Velocity
Predictable velocity helps production planners forecast the re-entry of salvaged units into the shipping schedule. This planning minimizes the need to launch extra production lots to cover shortfalls. Consistent flow supports stable delivery dates.