{"id":"downtime","model_id":"Downtime","name":"Downtime","summary":"Downtime is production time lost due to planned or unplanned stoppages. Planned downtime covers scheduled stops such as beginning-of-shift production meetings, changeovers to other products, and scheduled maintenance. Unplanned downtime covers stops caused by breakdowns, machine adjustments, material shortages, and absenteeism.","study_notes":["Downtime is split into two categories: planned and unplanned.","Planned downtime examples: beginning-of-the-shift production meetings, changeovers to produce other products, scheduled maintenance.","Unplanned downtime examples: breakdowns, machine adjustments, materials shortages, absenteeism.","The document lists it alongside Overall Equipment Effectiveness and Total Productive Maintenance; Total Productive Maintenance has no matching reference entry."],"safety_notes":[],"sources":[{"url":"https://www.lean.org/lexicon-terms/downtime/","title":"Downtime - Lean Enterprise Institute","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":1,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"operational","spec":{"kind":"metric","related":["oee"]},"url":"https://machineschema.com/operational/downtime","license":"https://creativecommons.org/licenses/by/4.0/"}