Total productive maintenance: operators, maintainers and managers sharing responsibility for equipment

In many factories, equipment care is divided neatly: operators run the machines and maintainers fix them. When a machine stops, production calls maintenance. When it squeals, leaks or produces the occasional bad part, operators work around it until it fails. Maintainers spend their days responding to breakdowns, with little time for the planned work that would prevent them. Everyone is busy, and the equipment slowly gets worse.

Total productive maintenance (TPM) is an approach that breaks down that division. It treats equipment reliability as a shared responsibility of operators, maintainers, engineers and managers, and it aims to eliminate the losses that stop equipment producing good parts at its intended rate. TPM originated in Japanese manufacturing in the 1970s and has since been adopted, in many forms, around the world. At its heart is a simple idea: the people who use a machine every day are best placed to notice early signs of trouble, and with training and time they can prevent many problems before they become breakdowns.

This article explains, in general terms, the losses TPM targets, the pillars of a TPM program, how autonomous maintenance works step by step, how TPM connects with planned maintenance and improvement and how a small factory can start without a large program. It is general information; equipment manufacturers’ instructions and work health and safety requirements must always be followed when people work on machines.

The losses TPM targets

TPM focuses on losses that reduce how much good output equipment produces. A widely used framework groups them as the six big losses:

Figure 1Six big losses, by OEE factor

• Lost equipment effectiveness
  • Availabilitybreakdowns; set-up and adjustment
  • Performancesmall stops; reduced speed
  • Qualitystart-up rejects; production rejects

These losses map onto overall equipment effectiveness (OEE), which multiplies availability, performance and quality. The measuring productivity article explains how OEE is calculated and its limitations. Small stops and reduced speed are often the largest hidden losses, because they are rarely recorded: an operator clears a jam in thirty seconds forty times a shift and nobody writes it down.

The pillars of TPM

TPM programs are often described as resting on several pillars. Descriptions vary, but they commonly include:

• Autonomous maintenance: operators take responsibility for basic care of their equipment, including cleaning, inspection, lubrication and tightening, and for spotting abnormalities early.
• Planned maintenance: maintenance specialists schedule preventive and predictive work, freed from constant firefighting.
• Focused improvement: cross-functional teams eliminate specific chronic losses using structured problem solving.
• Quality maintenance: maintaining equipment conditions that ensure defect-free production.
• Early equipment management: using lessons from existing equipment to specify and design new equipment that is easier to operate and maintain.
• Training and education: building the skills operators and maintainers need.
• Safety, health and environment: ensuring improvements make work safer.
• TPM in support functions: applying the same loss-elimination thinking to planning, purchasing and other office processes.

A small business does not need all of these as formal programs. The pillars are a reminder that equipment reliability depends on many functions working together.

Autonomous maintenance step by step

Autonomous maintenance is often the most visible part of TPM. It develops operators’ ability to keep their equipment in good condition. A commonly used progression has seven steps:

1. Initial cleaning. Operators and maintainers clean the machine thoroughly, not for appearance but to inspect it. Cleaning reveals loose bolts, leaks, cracks, worn parts and contamination. Each abnormality is tagged and recorded.
2. Eliminate sources of contamination and hard-to-reach areas. Fix leaks and spills at the source, add guards or covers to stop contamination, and make areas easier to clean, inspect and lubricate.
3. Set cleaning and lubrication standards. Define what to clean, inspect and lubricate, how, how often and by whom, in short, visual standards that can be completed in the available time.
4. General inspection training. Teach operators how key systems work, such as pneumatics, hydraulics, drives, lubrication and fasteners, so they understand what they are inspecting.
5. Autonomous inspection. Operators carry out routine inspections using checklists, recording and reporting abnormalities.
6. Standardisation. Extend standards to related areas such as changeovers, tooling, materials handling and quality checks.
7. Autonomous management. Teams manage their equipment’s condition and improvement as part of normal work, with support from maintenance and engineering.

Progress through the steps is usually confirmed by audits, and it takes time. The early steps alone, cleaning, fixing contamination sources and setting simple standards, often deliver noticeable improvements.

Making abnormalities visible

TPM relies heavily on visual management so that abnormal conditions stand out:

• coloured zones on gauges showing normal ranges;
• match marks on bolts showing whether they have loosened;
• labels showing lubrication points, oil types and directions of rotation;
• transparent covers where inspection would otherwise require disassembly; and
• tags placed on abnormalities until they are fixed.

One-point lessons, short single-page explanations of one task or piece of knowledge, help spread skills quickly.

Safety first

Operator maintenance must never compromise safety. Cleaning and inspection tasks must be designed so they can be done safely, with machines isolated where required, guards in place and clear rules on what operators may and may not do. Work health and safety legislation requires consultation with workers and safe systems of work, and those principles apply fully to TPM activities.

Planned maintenance and focused improvement

Autonomous maintenance frees maintenance specialists from minor tasks and provides early warnings, but it does not replace skilled maintenance. Planned maintenance uses that freed capacity for preventive, predictive and condition-based work, spare parts management and repairs scheduled into planned windows. The maintenance that prevents breakdowns article explains how to choose a maintenance strategy for each machine. Condition monitoring, such as vibration analysis, thermography and oil analysis, fits naturally here, giving warning of developing faults that operators cannot see.

Focused improvement tackles chronic losses that persist despite good maintenance: a recurring jam, a slow changeover, a defect that appears on certain products. Small cross-functional teams analyse the loss, find root causes and implement countermeasures, measuring the result.

Early equipment management in practice

Many reliability problems are designed in. A machine with lubrication points behind fixed guards, sensors mounted where product splashes on them or changeover parts that need special tools will be hard to maintain however disciplined the team. Early equipment management feeds the lessons from existing equipment into the specification, design and purchase of new equipment.

In practice, this can be as simple as keeping a list of maintainability and operability lessons and using it when buying machines: easy access to inspection and lubrication points, centralised lubrication where appropriate, visual indicators, standard components and spares already stocked, quick-change features, guarding that allows safe inspection and clear documentation. Asking operators and maintainers to review proposals and attend factory acceptance tests catches many problems before the machine arrives.

Measuring TPM progress

Measures help keep TPM focused on results rather than activity. Useful measures include:

• OEE and its components on pilot equipment, tracked weekly;
• number and duration of breakdowns, and mean time between failures;
• small stops per shift, which often fall sharply after early TPM steps;
• tags raised and closed, and the average time to close them;
• completion of cleaning and inspection standards; and
• planned maintenance as a share of total maintenance work, which should rise as breakdowns fall.

Activity measures such as tags closed are useful early, but the purpose is fewer losses. If tags are closed but OEE does not improve, the team may be fixing the wrong things.

Sustaining TPM

TPM programs often start with enthusiasm and fade within a year. The most common reasons are that time for TPM activities is squeezed out by production pressure, tags pile up without action, managers stop looking at results and early champions move on. Sustaining TPM means building it into normal routines: start-of-shift checks in the production plan, a weekly loss review on the shop floor, regular audits of standards, recognition of teams that improve, and new starters trained in their equipment’s care as part of induction.

Starting TPM in a small factory

A small manufacturer can begin without a large program:

1. Choose a pilot machine, ideally a bottleneck or a machine with obvious losses.
2. Measure its losses for a few weeks, including small stops and speed losses, not just breakdowns.
3. Hold an initial clean-and-inspect session with operators and a maintainer, tagging every abnormality.
4. Fix the tags, prioritising safety, contamination sources and causes of stoppages. Tags that are never fixed destroy credibility.
5. Create short standards for daily cleaning, inspection and lubrication that fit within the shift.
6. Make conditions visible with simple labels and marks.
7. Review losses weekly and run focused improvement on the largest.
8. Extend to the next machine once the pilot shows results.

Management support matters more than tools. Operators need time in the schedule for TPM activities, maintainers need to respond to tags, and managers need to look at the results regularly.

A worked example

This is an illustrative example. The figures are hypothetical.

A small food manufacturer’s packaging line is the bottleneck of the factory. A month of careful recording shows availability of 85%, mainly lost to breakdowns and long changeovers, performance of 70%, mainly lost to frequent small stops and running below rated speed, and quality of 97%. Overall equipment effectiveness is 0.85 × 0.70 × 0.97, or about 57.7%.

The business starts TPM on this line. An initial cleaning session with operators and a maintainer produces 46 tags, including worn guide rails, a loose sensor bracket causing false jam signals, product build-up on a transfer plate and a leaking air fitting reducing pressure to the case erector. The team fixes most tags within three weeks, creates a ten-minute start-of-shift cleaning and inspection standard, marks gauges and bolts and runs a focused improvement project on the remaining most frequent stop.

After three months, availability is 90%, performance 82% and quality 98%. OEE is 0.90 × 0.82 × 0.98, or about 72.3%. Because the line is the bottleneck, good output rises by about a quarter (72.3 ÷ 57.7 is about 1.25) without new equipment or extra shifts. The business then extends the approach to its filling machine.

Figure 2TPM on a packaging bottleneck

	Before	After three months
Availability	85%	90%
Performance	70%	82%
Quality	97%	98%
OEE	About 57.7%	About 72.3%

How this applies to a small Australian business

• Measure all six losses, especially small stops and speed losses.
• Start with one machine that matters, ideally the bottleneck.
• Clean to inspect, and tag abnormalities.
• Fix what is tagged, quickly and visibly.
• Write short standards that fit within the shift.
• Train operators in how their equipment works.
• Protect safety in every operator maintenance task.
• Use freed maintenance time for planned and predictive work.
• Feed lessons into purchasing, so new equipment is easier to operate, clean and maintain.

Common mistakes

• Treating TPM as a cleaning campaign without fixing causes.
• Tagging abnormalities and leaving them unresolved.
• Standards too long to complete in the time available.
• No time allocated for operators to do TPM tasks.
• Ignoring small stops and speed losses.
• Expecting operators to do maintenance they are not trained or authorised to do.
• Launching everywhere at once instead of proving it on a pilot.
• Measuring activity instead of losses, so tags and audits look good while output does not improve.

Frequently asked questions

Does TPM mean operators do the maintainers’ job? No. Operators take on basic care and early detection; maintainers focus on skilled, planned and predictive work. The aim is to use everyone’s skills where they add most value.

How long does TPM take to show results? Early steps such as cleaning, fixing abnormalities and simple standards often show results within weeks on a pilot machine. Embedding TPM across a factory takes much longer.

What if operators resist taking on maintenance tasks? Involve them in choosing and designing the tasks, provide training and time, fix the problems they report and make sure the tasks are safe and within their competence. Resistance often fades when operators see their reports acted on and their work getting easier.

Do we need a TPM consultant? Not necessarily. Many small businesses start successfully with a pilot, guidance from published material and support from experienced staff. External help can be useful for training and structure.

Questions to ask

• What are the six big losses on our most important machines, and which is largest?
• Do we record small stops and speed losses?
• Do operators have time and training to care for their equipment?
• How quickly are abnormalities fixed once reported?
• Are our cleaning, inspection and lubrication standards short, visual and followed?
• How does maintenance use the time freed by fewer breakdowns?

Bringing it together

Total productive maintenance makes equipment reliability a shared responsibility. It targets six big losses that reduce good output, builds operators’ ability to care for their equipment through autonomous maintenance, frees maintainers for planned work and uses focused improvement to remove chronic losses. Starting small, on a bottleneck machine, measuring honestly, fixing every abnormality found and building short standards into the shift can deliver substantial gains in output without new equipment. The small, frequent improvement on the shop floor article covers the improvement habits that keep TPM gains growing.

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Source: KEVOS editorial notes. Examples and figures in this article are illustrations. Always follow equipment manufacturers’ instructions and work health and safety requirements.