On-stream time

On-stream time (OST) is the actual run time divided by available time for process equipment associated with the process; may best be set in the high 80 to 90 percentile for many processes.

Definition

According to Juran's Quality Handbook by Defeo (7th edition),

On-stream time (OST). The actual run time divided by available time for process equipment associated with the process; may best be set in the high 80 to 90 percentile for many processes.