The number that surprises every plant manager who hears it
The Society for Maintenance and Reliability Professionals found that maintenance technicians in US manufacturing spend an average of only 29 percent of their working time on actual maintenance tasks. The remaining 71 percent goes to travel time, waiting for parts, waiting for equipment access, searching for information, and administrative activity. World-class maintenance organisations tracked by the same survey averaged 55 percent productive time. The gap between 29 and 55 percent is not a gap in skill or motivation. It is a gap in how work is prepared before the technician arrives at the machine.
The "searching for information" component is where tools like YAFEX make a direct impact. When a technician spends 45 minutes finding a fault resolution that already exists in a work order from six months ago, that is not a people problem. It is an information access problem. See also: what a CMMS does well — and where it falls short.
Planning versus scheduling — the distinction most plants skip
Planning is the preparation of work before it is executed: identifying specific tasks, determining correct parts, locating documentation, estimating labour hours, identifying special tools, sequencing tasks to minimise time on the machine. Scheduling is the assignment of planned work to specific technicians at specific times, coordinated with production. Plants that attempt to schedule work that has not been planned find that execution times deviate significantly, parts are missing, and technicians spend job time doing the preparation that should have happened in advance.
What the SMRP data shows about planning investment
SMRP Best Practices research tracked maintenance planning maturity across hundreds of facilities. Facilities with at least one full-time planner per 20 to 25 technicians achieved 30 to 40 percent higher wrench time than facilities without dedicated planners. Reliability Center Inc. found that planned work costs 3 to 9 times less to execute than the same work performed reactively — from eliminated parts delays, reduced diagnostic time, more efficient task sequencing, and lower overhead.
The reactive cycle that keeps most plants stuck below 50%
Unplanned emergency work consistently displaces planned work in the daily schedule. When a machine fails, the planned job gets postponed. When enough planned work gets postponed, the PM programme falls behind, failure rates increase, and more emergency work is generated. SMRP data shows a clear inflection point: reaching a planned-to-reactive ratio above 70 percent planned. Below that threshold, emergency work volume is sufficient to continuously displace the planned programme. Above it, each completed PM reduces future failures enough to protect planning capacity.
This dynamic is tracked directly by the planned maintenance ratio KPI — one of the six metrics SMRP research links to actual performance improvement.
The scheduling process world-class organisations actually use
SMRP benchmark data identifies a weekly scheduling cycle as the most common practice among top-quartile maintenance organisations. One weekly coordination meeting between the maintenance planner and production scheduler — 30 to 60 minutes — confirms equipment availability windows, assigns planned work from the backlog, and adjusts priorities based on production requirements. The output is a weekly schedule distributed before the week begins.
YAFEX helps maintenance teams make the information needed for better planning — documentation, fault history, part numbers — available instantly. Talk to us.
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