What is the availability of a machine that has 650 hours of downtime due to...

Availability is calculated as operating time divided by total planned time. In this problem, the total period is 4,272 hours and downtime is 650 hours, so the operating time is 4,272 minus 650, which equals 3,622 hours. Availability is therefore 3,622 divided by 4,272, which equals approximately 0.848, rounded to 0.85. In organizational process management, availability is a critical measure of equipment performance because it reflects how often a machine is actually ready for production when needed. It is commonly used in maintenance, reliability, capacity planning, and overall equipment effectiveness. Downtime due to adjustments and failures directly reduces availability, affecting throughput, schedule adherence, and cost. In Black Belt work, availability data can help prioritize maintenance improvement projects, identify chronic equipment losses, and support root-cause investigation of reliability issues. Since the computed value is closest to 0.85, the correct answer is C. This reflects the proportion of total time during which the machine was available for productive use after accounting for downtime.

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