If you want to reach and then exceed global standards for maintenance management, you need to find KPIs that show both your current position and general trajectory, where you are and where you're heading. The right maintenance metrics show if you're lined up or set to miss your target.
But before you get started, remember that there's no one perfect set that works for everyone. Different industries and organizations measure their performance differently.
To find the right ones for you, you'll need to look at the types of assets you manage and your specific short- and long-term goals. And it's not a case of the more, the merrier.
It's important to be choosy and focus on only the ones that help you line up and really aim at your target.
Now that we know the whys, let's look at the whats. We'll go over the maintenance metrics that you can track as key performance indicators (KPIs) to improve your maintenance management software (also known as facility management software).
What is a maintenance KPI?
Let’s start with a quick, working definition. A maintenance KPI is a quantifiable value that shows how well you’re moving toward a maintenance goal. It answers the following questions:
- Where are we now?
- How far is that from the goal?
- What needs to get done to get closer to the goal?
Why are tracking maintenance KPIs important?
It’s simple. The only way you’re going to get better is by setting goals and consistently working toward them, and maintenance KPIs are a great way to make sure your goals are clear.
It’s nice to say you want to increase up-time and cut costs, but when you say you want to increase up-time by 10% and cut costs by 20%, now you have objective standards to measure progress.
But the advantages start even before you start moving toward your goals. Throughout the process of establishing goals, you have the opportunity to take a close look at how you’re currently running the department, your current workflows and processes.
What are the differences between maintenance KPIs and maintenance performance metrics
A lot of people use the phrases interchangeably, so it's generally not a problem to talk about them like they’re the same thing.
But strictly speaking, they actually have different meanings. The easiest way to think about it is in terms of a timeline. Starting off you have your maintenance actions, the things the team is doing.
These actions can be measured using maintenance performance metrics. So, techs are repairing assets when they fail.
That’s the action. How quickly they are able to take a failed asset and get it up and running again is the performance metric. Another example: techs perform scheduled maintenance on assets.
The percentage of scheduled PMs still left open at the end of the week is a maintenance metric.
These metrics eventually add up to KPIs. You have a KPI related to downtime, for example, and you want to cut downtime by 10%. In order to get there, you need to look at the metrics that together affect downtime -- things like how quickly techs overcome failures and how many maintenance work orders are not done each week.
And again, a lot of people use the phrases to mean the same thing.
Which maintenance KPIs to track with maintenance management software
- Planned maintenance percentage (PMP)
- Overall equipment effectiveness (OEE)
- Mean time to repair (MTTR)
- Mean time between failure (MTBF)
Planned maintenance percentage (PMP)
Compares the time spent on planned and unplanned maintenance. Basically, you're comparing all the time spent on scheduled work orders to all the time spent on reactive, on-demand ones.
PMP also helps identify how often an asset is available. Ideally, 90% of your maintenance activities should be scheduled ahead of time.
Planned maintenance percentage is a vital indicator for tracking the health of a PM program and identifying avenues to decrease reactive maintenance.
PMP can also be used to figure out the reason of equipment downtime, poor efficiency, and lack of proper implementation so that these issues can be handled.
To calculate PMP,
PMP = (scheduled maintenance time/total maintenance hours) x 100
Overall equipment effectiveness (OEE)
OEE helps track an asset's productivity, providing valuable insights into a maintenance plan's effectiveness. It focuses on three key factors: quality, performance, and availability.
An OEE of 100% means every process is running at maximum efficiency, with zero breakdowns and good quality outcomes.
Wikipedia defines it as, "Overall equipment effectiveness (OEE) is a measure of how well a manufacturing operation is utilized (facilities, time and material) compared to its full potential, during the periods when it is scheduled to run.
It identifies the percentage of manufacturing time that is truly productive. An OEE of 100% means that only good parts are produced (100% quality), at the maximum speed (100% performance), and without interruption (100% availability)."
To calculate OEE,
OEE = availability x performance x quality
Mean time to repair (MTTR)
MTTR is the average time taken for an asset to be diagnosed, repaired, and rehabilitated after a breakdown or failure. The idea is to reduce MTTR as much as possible by speeding up the recovery process.
By tracking this KPI, organizations improve asset availability.
To calculate MTTR,
MTTR = (total downtime periods/ total number of repairs)
Mean time between failure (MTBF)
Measures the average time an asset is up and healthy between bouts of unplanned downtime. Basically, it tells you the average time an asset runs between failures.
The KPI helps identify how long a specific asset or its parts generally last, allowing you to set your preventive maintenance schedule. If an asset usually runs about three weeks between failures, think about setting your PMs for every two and a half weeks.
To calculate the MTBF,
MTBF= (sum of operational time/total number of failures)
Preventive maintenance compliance (PMC)
Measures the percentage of maintenance work orders scheduled and completed during a set time, and helps organizations measure the effectiveness of their preventive maintenance plans. For example, you might have 80 work orders scheduled but only 68 complete at the end of the month.
To calculate PMC,
Preventive Maintenance Compliance = (68/80) x 100 = 85%
But you have to be careful with this KPI. It doesn't tell you how many of those PMs were completed on time. So, you might have four PMs scheduled over the course of the next week, all of them due by Thursday.
If you close all of them out late, let's say you do all of them on Friday, your PMC( Preventive Maintenance Compliance) is still going to be 100%. Something is wrong with your PM program, and this KPI is not showing it.
Now that we have explored some of the maintenance KPIs that we can track, we need to dig deeper and see how to track them. You'll need the right tools, process, and people.
How does CMMS software help track maintenance KPIs?
In order to make all this happen, you need an efficient way to collect, store, and leverage data. It’s possible to do it all by hand, but it ends up being a nightmare.
There’s a lot of data to collect, and you’re relying on techs to always be careful and make sure they’re writing everything down properly.
Then you need to somehow keep all those slips of paper or spreadsheet files safe and organized. Here’s the worst part: your work has only just begun because now you have to take all that data and start crunching it.
It makes a lot more sense to invest in good CMMS software. Data is collected automatically as you generate work orders and techs close them out. Thanks to cloud computing, the CMMS solution keeps everything safe in one central database, ensuring all your data is always up to date.
When it comes time to calculate your maintenance KPIs, the software auto-generates reports packed with KPIs and graphs.
If you're interested in maintenance KPIs (and you have to be if you're interested in setting and hitting maintenance goals), now's the time to start talking with maintenance management software providers.