Tag: plant maintenance

  • CMMS Explained: Does Your Plant Need Maintenance Management Software?

    CMMS Explained: Does Your Plant Need Maintenance Management Software?

    The Whiteboard, the Spreadsheet and the Fitter Who Remembers

    Many plants run maintenance on three systems: a whiteboard of jobs, a spreadsheet of scheduled tasks that was last fully up to date some time ago, and the memory of an experienced tradesperson who knows when every gearbox was last changed. It works, until the plant grows, an auditor asks for records or that tradesperson retires.

    A computerised maintenance management system, or CMMS, is meant to replace all three. This guide explains what a CMMS does, how to tell whether your plant needs one, what to look for when choosing and why so many implementations disappoint.

    What a CMMS Is

    A CMMS is software that holds a plant’s maintenance information in one place and manages the work that flows from it. Whatever the product, the core functions are the same.

    An asset register. A structured list of every piece of equipment, usually arranged as a hierarchy from site to line to machine to component.

    Work orders. A record of every job: what was requested, who did it, how long it took, what parts were used and what was found.

    Preventive maintenance scheduling. Recurring tasks generated automatically by calendar date, by running hours or by production count.

    Spare parts. Stock levels, locations, reorder points and which parts fit which machines.

    History. Everything that has been done to each asset, searchable.

    Reporting. Backlog, compliance with the schedule, cost by asset and failure trends.

    Larger systems are sold as enterprise asset management and add purchasing, contractor management and financial integration. For a single manufacturing site the distinction matters less than whether the system is actually used.

    Seven Signs Your Plant Needs One

    Scheduled maintenance is missed and nobody notices until something fails. The same fault recurs and there is no record of what was done last time. Spare parts are bought in a hurry because nobody knew the shelf was empty. An audit asks for evidence that a task was done and producing it takes a day. Maintenance cost cannot be attributed to a line or a machine. Knowledge of the plant sits with one or two people. Work requests arrive by phone, radio, email and conversation, and some are lost.

    One or two of these can be managed with discipline and a good spreadsheet. Four or more suggest the plant has outgrown its tools.

    When a Spreadsheet Is Enough

    A small site with a few dozen assets, a maintenance team of two or three and a stable schedule can run well on a carefully kept spreadsheet. The test is not size alone. It is whether work is being done on time, whether history can be found when needed and whether the system survives a change of personnel. If the answer to all three is yes, software will add cost without adding much.

    What a CMMS Makes Possible

    The first benefit is that scheduled work stops being forgotten. The second is more valuable and takes longer: decisions based on history. With a year or two of reliable work orders you can see which machines consume the most labour, which failures recur, which preventive tasks never find anything and could be done less often, and which assets are costing more to keep than to replace.

    It also changes the conversation with production and finance. A request for a shutdown day or a capital replacement backed by data is harder to refuse than one backed by experience alone.

    Why So Many Implementations Disappoint

    Buying the software is the easy part. Most disappointment comes from what happens next.

    Poor asset data. The register is built from an old equipment list that does not match the floor. Work orders are raised against the wrong machine and the history is useless.

    Too many scheduled tasks. Every recommendation from every manual is loaded on day one. The system generates more work than the team can do, compliance collapses and people stop trusting the schedule.

    Work orders with no information. A job closed with the single word fixed tells the next person nothing. The value of the system is in the detail recorded at close out.

    Tradespeople do not use it. If entering a job takes longer than doing it, it will not be entered. Systems that work on a phone or tablet at the machine are used. Systems that need a desktop in the office are not.

    No owner. Someone has to keep the data clean, adjust schedules and chase open work. In most successful sites that is a maintenance planner, even a part time one.

    Reports nobody reads. A system that produces data but changes no decisions is an expensive diary.

    Choosing a System

    The market is crowded and the products are more alike than their marketing suggests. For a manufacturing plant the following matter most.

    Ease of use on the floor. Can a tradesperson open, update and close a work order on a mobile device in under a minute? Test this with your own people before deciding.

    Simple work requests. Can an operator report a fault without training, ideally by scanning a code on the machine?

    Flexible scheduling. Does it handle tasks based on running hours or production counts as well as dates?

    Spare parts linked to assets. Can you see what parts a machine needs and whether they are in stock?

    Useful standard reports. Schedule compliance, backlog, and the split between planned and reactive work, without custom development.

    Integration. Can it take running hours or fault signals from your control systems, and exchange data with purchasing or finance, if you want that later?

    Getting your data out. If you change systems in five years, can you export your history?

    Resist buying for features you might use one day. The best system is the one your team will keep up to date.

    A Sensible Order for Implementation

    Start with the asset register, and build it by walking the plant, not from an old list. Agree a naming and numbering convention and label the equipment to match. Load a small number of critical preventive tasks, the ones you are confident are worth doing, and add more later as the team shows it can keep up. Get every job, including breakdowns, recorded as a work order from day one. Define what must be written at close out: what was found, what was done, what parts were used. Add spare parts once work orders are flowing. Introduce reports only when there is enough data to mean something.

    Expect the first six months to be about habits and the real payoff to come in the second year.

    The Measures Worth Watching

    Schedule compliance. The share of preventive tasks completed on time. If it is low, there are too many tasks or too few people.

    Planned versus reactive work. The proportion of labour hours spent on planned jobs against breakdowns. Movement towards planned work is the clearest sign that maintenance is getting ahead.

    Backlog. How many weeks of work are waiting. Some backlog is healthy. A growing one is a warning.

    Repeat failures. The same fault on the same asset, which a CMMS makes visible for the first time.

    Where BevTech Fits

    BevTech is a family owned engineering business in Richlands, Brisbane, with more than 25 years in beverage and FMCG manufacturing. We are not a software supplier. We do the work a maintenance system depends on and generates: electrical condition audits that establish what equipment a site has and what state it is in, as-built drawings that match the plant, planned maintenance and shutdown crews to clear the schedule, and 24/7 breakdown support for the faults that still occur. When we attend a job we record what we found and what we did, so that your history stays complete whichever system holds it.

    If your maintenance schedule is asking more than your team can deliver, use the contact form at bevtech.com.au/contact.

  • MTBF and MTTR Explained: How Often Equipment Fails and How Fast You Recover

    MTBF and MTTR Explained: How Often Equipment Fails and How Fast You Recover

    Two Numbers That Describe a Line’s Reliability

    When a production line underperforms, the first argument is usually about why. Maintenance says the equipment is old. Production says repairs take too long. Both may be right, and without numbers the argument never ends. MTBF and MTTR are the two measures that separate the questions. One tells you how often equipment fails. The other tells you how long it takes to get it back.

    This guide explains what each measure means, how to calculate them, how they combine into availability and how to decide which one to work on.

    What MTBF Means

    MTBF stands for mean time between failures. It is the average length of time a repairable piece of equipment runs before it fails. A higher figure means failures are less frequent.

    The calculation is total operating time divided by the number of failures in that period. Operating time is the time the equipment was actually running, not the time it was scheduled to run.

    A related term, MTTF or mean time to failure, is used for items that are replaced and not repaired, such as a bearing or a lamp. For a production machine that is repaired and returned to service, MTBF is the right measure.

    What MTTR Means

    MTTR stands for mean time to repair. It is the average time taken to restore equipment after a failure, measured from the moment it stops to the moment it is producing again.

    The calculation is total downtime from failures divided by the number of failures.

    Be aware that the letter R is used in different ways. Some organisations mean repair, some recovery and some respond, and the clock starts and stops at different points in each. What matters is that your site chooses one definition and keeps to it. The most useful for production is the full stop to start time, because that is what the plant actually loses.

    A Worked Example

    A packaging line was scheduled to run for 400 hours in a month. It had 8 failures, which together caused 20 hours of downtime.

    Operating time is 400 hours less 20 hours, which is 380 hours.

    MTBF is 380 hours divided by 8 failures, which is 47.5 hours. On average the line runs for about two days of continuous production between failures.

    MTTR is 20 hours divided by 8 failures, which is 2.5 hours. On average each failure costs two and a half hours.

    How They Combine Into Availability

    Availability is the proportion of scheduled time that equipment is able to run. It can be calculated directly from the two measures: MTBF divided by the sum of MTBF and MTTR.

    For the example, that is 47.5 divided by 50, which is 95 per cent. The same answer comes from 380 operating hours out of 400 scheduled.

    The formula shows something important. There are two ways to raise availability, and they are quite different jobs. If this plant halved its MTTR to 1.25 hours with the same number of failures, downtime would fall to 10 hours and availability would rise to 97.5 per cent. If it instead halved the number of failures to 4, with repairs still taking 2.5 hours each, downtime would also fall to 10 hours and availability would again be 97.5 per cent. The result is the same. The work required to get there is not.

    What Drives MTBF

    Time between failures is mostly determined before the failure happens.

    Maintenance. Whether wear is found and corrected before it causes a stop.

    Operating conditions. Running within design speed and load, correct setup, clean and lubricated equipment.

    Design and installation. Components suited to the environment, particularly in washdown areas, and protection correctly set.

    Quality of repairs. A repair that fixes the symptom and not the cause guarantees the next failure.

    Parts. Correct, genuine or properly made replacements in place of near enough substitutes.

    Improving MTBF is slow. It takes months of consistent maintenance and root cause work before the figure moves, and it is where the largest long term gains are.

    What Is Hidden Inside MTTR

    Repair time is rarely one thing. Break an average stoppage into stages and the picture changes.

    Detection. How long before someone realises there is a failure and not a pause.

    Response. How long until a person who can fix it reaches the machine. Out of hours this can be the largest part.

    Diagnosis. How long to find the fault. This depends heavily on drawings, software access and familiarity with the machine.

    Parts. How long to get the replacement, from the shelf or from a supplier.

    Repair. The hands on work, which is often the shortest stage.

    Restart. Testing, cleaning where product was exposed and bringing the line back to rate.

    In many plants the actual repair is a small part of the total, and most of the time is spent waiting, searching and working out what is wrong. That is good news, because those stages can be shortened quickly and cheaply: current drawings at the machine, software backups, labelled panels, critical spares held on site and a response arrangement that puts the right person there fast.

    Which One Should You Work On

    Look at the pattern behind the averages.

    Few failures, long repairs. High MTBF and high MTTR. The equipment is fundamentally sound and the plant is poorly prepared when it does fail. Work on response, diagnosis and spares.

    Many failures, short repairs. Low MTBF and low MTTR. The team has become very good at fixing the same things. Work on root causes and maintenance, because the skill being shown in repair is being wasted on problems that should not recur.

    Many failures, long repairs. Both are poor. Start with MTTR for quick relief, then turn to MTBF.

    As a rule, MTTR improvements arrive in weeks and MTBF improvements in months. Most plants benefit from starting with the first while planning the second.

    Five Traps in the Numbers

    What counts as a failure. If a thirty second stop is a failure, MTBF will look terrible and MTTR excellent. Set a threshold and treat short stops separately.

    Averages hide extremes. Seven failures of twenty minutes and one of seventeen hours give a similar MTTR to eight failures of two and a half hours. They are different plants. Look at the spread.

    Mixing planned and unplanned stops. Changeovers and cleaning are not failures.

    Too little data. A machine that failed twice in a month has no meaningful average. Use longer periods for reliable equipment.

    Comparing unlike lines. A high speed filler and a palletiser should not share a target. Compare each asset with its own history.

    Starting to Measure

    You need three things for each failure: when the machine stopped, when it restarted and what failed. A shift log will do to begin with. Calculate both measures monthly for each main line, plot them and look at the direction. The trend matters more than the absolute value. If you can also record when the tradesperson arrived and when the fault was identified, you can split MTTR into its stages, which shows exactly where the time is going.

    Where BevTech Fits

    BevTech is a family owned engineering business in Richlands, Brisbane, with more than 25 years in beverage and FMCG manufacturing. We work on both sides of the availability equation. For MTTR, we provide 24/7 breakdown support and shift coverage, fast and methodical fault diagnosis on Allen Bradley and Siemens systems, as-built drawings and a machine shop that can make a part the same day instead of waiting on a supplier. For MTBF, we carry out electrical condition audits, planned maintenance and shutdown work, and engineering fixes for the faults that keep recurring.

    If your numbers show where the time is going and you want help getting it back, use the contact form at bevtech.com.au/contact.

  • Why We Are Giving Away Our Shutdown Planning Checklist

    Why We Are Giving Away Our Shutdown Planning Checklist

    The Most Expensive Week on Your Production Calendar

    Ask any engineering or maintenance manager in a beverage or FMCG plant to name the most stressful week of their year and the answer is rarely a breakdown. It is the planned shutdown. A shutdown is the one window where every deferred job, every capital project and every compliance item competes for the same few days, with a restart date that production has already promised to the business. Every hour of that window is paid for twice, once in labour, parts and contractor costs, and again in the production the line is not running.

    After more than 25 years of shutdown and project work in Australian beverage and FMCG plants, we have seen shutdowns that restarted early and shutdowns that dragged a week past their date. The difference between them is almost never how hard people worked during the window. It is the quality of the scoping and planning done in the weeks before anyone picked up a tool. That conviction is why we have put our shutdown planning approach into a practical document, the FMCG and Beverage Plant Shutdown Planning Checklist, and made it freely available to download from our website.

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    Why Give It Away?

    The honest answer is that well planned shutdowns are better for everyone, including us. When we arrive on site for shutdown work, the jobs that run smoothly are always the ones where the scope was locked early, the parts were sighted on the shelf, and the control system changes were written and tested before the window opened. The jobs that turn into overruns are the ones scoped on the back of a purchase order three weeks out.

    We would rather work with plants that plan properly, and we would rather be part of that planning early, when engineering input can still change the outcome. Sharing the checklist costs us nothing except a few trade secrets that were never really secrets, because none of this is complicated. It is simply the discipline of doing the right things in the right order, starting earlier than feels necessary.

    There is also a simpler reason. Our business is family owned and has been built over decades on long relationships with manufacturers, from the largest names in Australian beverage production through to smaller regional operations. Useful, practical help has always been how those relationships start.

    What Poor Planning Actually Costs

    The visible cost of an overrun is easy to calculate: extra contractor hours, weekend penalty rates, expedited freight on the part that should have been ordered six weeks earlier. The larger cost is the one on the production side. A high speed canning or bottling line produces enormous value per hour, and every hour the restart slips is product that was promised to customers and is now not coming. In a contract packing environment, a late restart can mean penalties or a customer quietly moving volume elsewhere.

    Then there are the costs that never appear on a spreadsheet. Work rushed at the end of an overrunning shutdown is work done tired, under pressure, with testing compressed or skipped. That is how a shutdown intended to improve reliability ends up causing the next three months of niggling faults. It is also how safety shortcuts happen, and in our view no schedule is worth that.

    Against all of this, the cost of proper planning is a few structured meetings, a master work list, and the discipline to order long lead items on time. It is the cheapest insurance available in plant engineering.

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    Where Shutdowns Go Wrong

    The failure patterns repeat across almost every site. Scope arrives late, added in the final fortnight by people who were not in the early meetings, and every late addition bumps something else off the critical path. Long lead items are ordered on optimistic assumptions, so the gearbox or the PLC hardware arrives the day after the window closes. Contractor crews are booked late in shutdown season, when the good tradespeople are already committed. And control system work is treated as something that happens during the shutdown, rather than something developed and bench tested beforehand, so the window that should have been used for installation and commissioning gets consumed by programming.

    That last one deserves special attention, because it is the most common gap we see. PLC changes, HMI updates, drive replacements and safety circuit modifications all need engineering time before the shutdown and structured testing time during it. When we delivered the automated control system for two glycol refrigeration units cooling large beer tanks, built on a Siemens 1500 series PLC, the logic was developed and proven before installation, which is precisely why commissioning went to plan. The same applied to the hot water rinse system we implemented for a can seamer clean in place process on a Siemens 1200 series platform. Control work rewards preparation, and punishes improvisation.

    What the Checklist Covers

    The checklist is a working document, not a glossy brochure. It walks through six phases of a shutdown, starting eight to twelve weeks out and finishing after the line is handed back. The early sections cover building a single master work list across mechanical, electrical and automation scopes, ranking every job by production risk, and identifying the design, fabrication and long lead items that decide your critical path. The middle sections deal with parts, people and engineering readiness: confirming deliveries in writing, locking in contractor crews, backing up every PLC, HMI and drive parameter set, and walking every job at the machine before the window opens.

    The later sections cover the shutdown itself and what follows: protecting the critical path shift by shift, testing safety functions as they are reinstated, recommissioning system by system, and holding the review that makes the next shutdown easier. Each item exists because we have watched its absence cost a plant real money.

    One recommendation in the checklist is worth highlighting here. A shutdown window is the cheapest opportunity you will ever get to deal with control system obsolescence. Legacy Allen Bradley and Siemens hardware moves steadily through manufacturer lifecycle stages, and a planned migration during a scheduled window costs a fraction of an emergency migration after a failure. If your site has processors that have run untouched for fifteen years, the next shutdown is the time to act, and the checklist prompts you to assess exactly that.

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    How to Use It

    Download it, print it, and take it into your next shutdown planning meeting. Mark it up, argue about it, and adapt it to your site, because every plant has its own quirks and no generic document survives contact with a real production line unchanged. Its job is to make sure the right questions get asked early enough for the answers to matter.

    Use it alongside your existing maintenance systems rather than instead of them. The checklist does not replace a CMMS or a project plan. It sits above them as a sanity check that the fundamentals, scope discipline, long lead items, controls preparation, testing and handback, are actually covered.

    Planning a Shutdown? Talk to Us Early

    BevTech Engineering and Automation delivers shutdown work across mechanical, electrical and automation scopes from our Richlands base in Brisbane, with our own machine shop for fabrication and change parts, TUV certified functional safety engineers for compliance work, and deep experience on Allen Bradley and Siemens PLC platforms. The plants that get the most value from us are the ones that involve us at the scoping stage, when engineering input can still shape the plan rather than rescue it.

    The checklist is available to download now on our website. And if there is a shutdown on your horizon, whether it is three months away or next year, reach out through the contact form on our website and talk it through with our team while the calendar is still your friend.

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Shutdown Checklist
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