{"id":"oee-availability","model_id":"Availability Rate","name":"OEE Availability Rate","summary":"Availability rate is one of the three elements of Overall Equipment Effectiveness (OEE). It measures downtime losses from equipment failures and adjustments as a percentage of scheduled time. It is multiplied by performance rate and quality rate to calculate OEE.","study_notes":["The document describes OEE as a Total Productive Maintenance (TPM) measure.","OEE is calculated as Availability Rate x Performance Rate x Quality Rate.","The worked example uses availability 90%, performance 95% and quality 99% to obtain 84.6% OEE.","The six major losses listed are failures, adjustments, minor stoppages, reduced operating speeds, scrap and rework.","Some companies add other measures to the six major losses."],"safety_notes":[],"sources":[{"url":"https://www.lean.org/lexicon-terms/overall-equipment-effectiveness/","title":"Overall Equipment Effectiveness - Lean Enterprise Institute","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":2,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"operational","spec":{"kind":"metric","origin":"Total Productive Maintenance (TPM)","related":["oee"]},"url":"https://machineschema.com/operational/oee-availability","license":"https://creativecommons.org/licenses/by/4.0/"}