Planned maintenance is maintenance work prepared before execution: defined scope, materials staged, tools and labor hours estimated, and a date agreed with production. In TPM vocabulary, it is the pillar run by the professional maintenance team on the way to zero breakdowns; in planning vocabulary, it is simply the right way to work. This article untangles planned, scheduled and preventive, and walks the full cycle.
Planned, scheduled and preventive are not the same thing
The three terms blur in conversation and should not. Planning defines the what and the how: scope, materials, tools, labor, procedure and safety. Scheduling defines the when and the who: fitting the planned job into the week's agenda, with the crew assigned and the window negotiated with production. Preventive is one of the types of maintenance, defined by its trigger (time or usage interval). A corrective job can be planned and scheduled: the failure was detected, the repair was prepared and put on the agenda. The opposite, emergency corrective, is the job that tramples every plan.
The planned maintenance cycle
1. Intake: everything becomes an order
Operator notifications (including the tags from autonomous maintenance), inspections, preventive orders coming due, analysis recommendations. What does not enter the system does not exist for planning.
2. Prioritized backlog
The portfolio of approved work, measured in labor hours and prioritized by asset criticality and risk. A backlog without prioritization is just a queue; the priority rule is what protects the team from the tyranny of the loudest voice.
3. Job planning
Scope, procedure, reserved materials, tools, estimated hours, safety permits. The quality measure of planning is simple: did the technician start the job without having to leave to fetch anything?
4. Weekly scheduling
Planned jobs enter the agenda against the team's real capacity (shifts, absences, skills). Schedule compliance becomes the central indicator: the percentage of what was scheduled that actually happened.
5. Execution with real-time recording
Confirmation done during the job, with real time, consumed materials and a description of what was found, is what feeds everything else. Memory-based reporting at the end of the shift contaminates MTTR, cost and history at once.
6. Analysis and plan improvement
Recurring breakdowns trigger cause analysis; preventive jobs that never find anything are candidates for longer intervals; field findings feed scope and frequency back. This step separates a living plan from an inherited one.
Where the pillar meets planning and control
In TPM, planned maintenance is one of the 8 pillars of the program (the full context is in the Total Productive Maintenance guide); in daily life, the structure that runs this pillar is maintenance planning and control, with planner, scheduler and the weekly routine. And the documentary base of it all is the maintenance plan per asset, covered in the maintenance plan guide. Three pieces, one gear: TPM provides the program, planning provides the routine, the plan provides the content.
Frequently Asked Questions
What is planned maintenance?
It is maintenance work prepared before execution: scope, materials, tools, labor and safety defined, with a date agreed with production. In TPM, it is the pillar run by the professional maintenance team.
What is the difference between planned and scheduled maintenance?
Planning defines the what and how (scope, resources, procedure); scheduling defines the when and who (week's agenda, assigned crew). Well-managed work passes through both, in that order.
Is planned maintenance the same as preventive?
No. Preventive is a maintenance type, defined by its interval trigger. Planned is a quality of the work: even a corrective job can be planned, when the detected failure has its repair prepared and scheduled.
Which indicators measure planned maintenance?
The main ones: percentage of labor hours on planned work versus emergency, weekly schedule compliance and backlog in weeks. The trend of these three tells the pillar's story.
