Technical Tuesday

 

Technical competence is critical in facilities maintenance. Properly diagnosing and addressing complex systems requires not just experience but also a deep understanding of engineering principles. When challenges exceed internal capabilities, partnering with engineering consultants can bring the expertise needed to ensure safe, efficient, and cost-effective solutions. Investing in the right knowledge pays dividends in operational excellence. #FacilitiesMaintenance #Engineering #TechnicalExcellence

Don't be afraid to hire out those skills that are needed, but not available on your in-house team.  Leverage the resources around you to become even more competent.

Time to Change

 

When is the right time to change out equipment? When repair costs begin to escalate? When it has reached the end of its rated life even if it is not showing any signs of problems? When observed conditions indicate that it is worn out? When spare parts become difficult to procure? When the application is too critical to go down unexpectedly?

The answer, of course, is all of these reasons are good reasons to change out old, aging, worn equipment. The challenge is balancing all of those tools and prioritizing which criteria is the base for a given situation. Understanding that we all have finite capital budgets to work with, we need to objectively determine which replacement will yield the best result.

You and your staff probably have a pretty good idea for the majority of the equipment or building systems that need to be addressed, but sometimes it pays to get a fresh set of eyes on the problem. A building condition assessment from an independent professional could be the resource you need to make these tough decisions. An outside professional with facilities experience can provide a dispassionate opinion based on the observable conditions of the building systems or equipment. In addition, their report will provide you with objective data that you can use internally to secure the funding that you need for the capital improvements. If done correctly, the report should provide you with photographs and the logic used to arrive at the prioritized recommendations that will help the executives understand the reasons for your selections as well as the urgency for any needed updates.

Eating the Elephant

 How do you tackle a seemingly insurmountable task?  As the old adage says "How do you eat an elephant?  One bite at a time".  Maybe you have taken a new job or been assigned to a new responsibility and find that the maintenance program there is either ineffective, poorly managed, or non-existent.  Getting your head around fixing it may seem overwhelming, but the answer may be found in that old saying.

First off, you need to START.  Somewhere, anywhere, is better than doing nothing.  The next challenge is to decide where to start or what to prioritize.  There really is no wrong answer as long as you are making progress, but there may be some approaches that could help you gain more traction and momentum more quickly.

If you find yourself in a situation where there have been no real effective PM / PdM processes in the past, your first challenge is going to be demonstrating that success is attainable and real.  Depending on the availability, skill, and attitude of your maintenance staff, the way to accomplish this might be to seek out those tasks that would be the easiest to accomplish.  Start by showing what can be done with the less challenging tasks and gradually expand the scope to include more technical items.  A team that has never changed air filters on a schedule before will probably not be ready to deploy a vibration analysis program across all of the rotating equipment in a facility.  Baby steps are required.

If you do happen to have skilled tradespeople but not really enough of them to be as effective as you want, perhaps your biggest challenge is demonstrating to management that the additional investment in resources will pay off.  In this instance, evaluating the maintenance challenges and identifying those areas that would deliver the greatest return would be the best place to focus.  If your facility is going through pumps in a particular portion of the plant because of frequent breakdowns due to poor past maintenance, this is likely both a maintenance and a production headache.  Improving the up-time of that equipment allowing the production area to be more effective would go a long way toward demonstrating the viability of your efforts and help you justify the further investment in your team.

Lastly, perhaps the overall size and scope of the area you need to maintain is just too large for the team you have available, and there are legitimate arguments for starting in any of a number of areas.  If this is the case, you need to simply select one area in which to really shine.  At this point, you probably just need to demonstrate some sort of success, so start.... just start!

Once you have started, whichever direction you choose to go, make sure you start collecting data immediately so that you can determine whether your efforts are focused in the right areas and how effective those efforts are.  Data is critical and as mentioned in previous posts, the feedback loop is where the key decisions are made, BASED ON good data.  This information can help you make sure your efforts are well-focused

and can help you leverage the support from management that you will need to continue to improve.

What Should I Maintain?

 

“What should we maintain?”

It might seem like a simple question at first, but it isn’t, especially if your organization has not had a formal maintenance program in the past. Or perhaps you have a maintenance program, but it is overwhelmed and really struggling to put out fires.

Management might say “we need to maintain all of it”, and they are not necessarily wrong, but how do you get there. There is no ‘one size fits all solution’ but here are some thoughts to consider:

What are our most critical pieces of equipment? Can we start with a focused effort to improve our maintenance processes for them? Getting some success and traction with a few items first allows you to learn new processes without getting overwhelmed, and the improved up-time and reliability improvements should free up more resources to expand the program over time.

We have so much equipment – it is impossible to conceive how we will be able to include them all in a formal preventive / predictive maintenance program. Well, the good news is, you shouldn’t need to maintain “all” of it, at least not from a PM / PdM standpoint. There will be equipment that you will choose to “run to failure” – and that is OK. You need to take a discerning look at all of the equipment and parse out those things that will not significantly benefit reliability, operational and maintenance costs, and / or up-time. If the list is still too big after that first pass, make another pass through and remove items from the list that are less critical to the operation. Once you reduce the list of equipment that you will focus on, implement an effective PM / PdM program and continue to adapt it over time to later include those things that might have been left out of the initial effort.

Sometimes assistance from an outside perspective can help clarify this sorting process. Reach out for help if you need.

Maintenance Procedures for Unique or Custom Equipment

 

In a previous post, equipment with established maintenance procedures was discussed. These procedures may have been recommended by the manufacturer, from established industry resources, or even from individual experience (as determined by the feedback loop discussed). However, not every piece of equipment has established maintenance procedures. Perhaps it is a custom machine used as part of your unique manufacturing process. Maybe it is a collection of equipment assembled together for a unique purpose. Custom equipment or equipment utilized for novel purposes may not have established maintenance procedures, but that doesn’t mean it doesn’t require routine, preventive and / or predictive maintenance. What do you do?

There are tools and methods that can be used to work through these challenges. One method might include a Failure Mode and Effects Analysis. This tool has key people who are knowledgeable about the equipment and how it is used work through a methodical series of questions to determine the likely points of failure, their potential causes, and possible solutions to prevent those failures. This tool can be used on virtually any type of equipment but it is particularly useful for equipment that is custom-made, inherently complex, and/or unique in some way.

The key to performing an effective FMEA is to have a facilitator that can lead the team through the process to ask the right probing questions, collect the relevant solutions, and then compile them into an effective set of maintenance procedures. To learn more, start here: https://michaud-engineering.com/maintenance-consulting

Information is the key to an effective maintenance program

 

If you have been around the maintenance business for any amount of time, you know that many types of equipment have well established maintenance procedures and intervals. Many times the manufacturer will provide this with with the equipment and for typical equipment there often industry standards or standard practices that are used. In all cases, these should be a starting point, but as they say YMMV (your mileage may vary) – meaning it is important to monitor your equipment specific to your use conditions and modify your maintenance processes and frequencies accordingly. For instance, if the recommended filter change interval for a packaged rooftop unit is 2x per year, but your building is in a particularly dusty / dirty location, you may need to increase this frequency to 3x or 4x per year, or perhaps change the filter media that you use to include a pre-filter to screen out larger particulate matter before it fouls your main filters. This is just one example.

In a previous post, the question was posed – why isn’t your maintenance program working as effectively as possible? One of the answers might be related to the “feedback loop”. As important as it is to have skilled technicians performing good maintenance work, their feedback from their work and interaction with the equipment is critical in making good decisions about the equipment for the future. If the aforementioned packaged rooftop unit had nearly blinded over filters each time they were changed on the 2x per year frequency, but the technician never reported this, or if the report never made it to the appropriate decision maker, then the lifespan of this equipment may be significantly shortened. Depending on the criticality of that equipment, that could lead to all sorts of other issues, such as poor performance, reliability problems, increased operational costs and shortened life leading to higher capital costs.

We live in an information age and we have never been better equipped with the myriad tools at our disposal to convey critical information. Are you getting the information you need to make the best decisions?

How Is Your Summer Going?

 

How Is Your Summer Going?

Robert S. Michaud, P.E.

8/3/22

It is the height of the summer months and this is the time of year when our AC equipment is typically the most challenged. So the question is – how is your summer going? Is your AC equipment keeping up with the demand? If it isn’t, there are are a number of possible explanations that you need to explore. They may include any one or a combination of the following:

1. Is our periodic preventive / predictive maintenance effective? If the equipment was not properly maintained prior to the start of the cooling season, this is the point in the year when those failings would be most evident. The inspection and testing of critical components, along with the cleaning of the coils and filters are critical to the proper operation of AC equipment. The equipment may ‘get by’ when temperatures are mild, but in the heat of the summer when the equipment is pushed to its capacity limits, failure to perform the required maintenance will often result in equipment that just cannot perform as needed.

2. Have their been periodic inspections monthly throughout the summer to ensure the equipment is still operating properly and undamaged? Sometimes, even with the best of regular PM maintenance, problems unexpectedly occur. Perhaps a tree limb fell on a condensing unit. Perhaps there was higher than expected pollen or dust this spring that clogged the condenser coils again after they were cleaned in the spring. Or there may have been an unexpected refrigerant leak. Periodic inspections should be part of the facilities manager’s weekly routine to catch small problems before they become large ones.

3. What is the age of your HVAC equipment? Everything has an expected lifespan. Everything! BOMA publishes a guidebook that includes expected lifespans for various equipment (https://www.boma.org/BOMA/BOMA/Research-Resources/Publication_Pages/Preventive%20Maintenance%20Guidebook.aspx) . If your HVAC equipment has reached or exceeded its expected lifespan, it is a good idea to consider replacing it. Not only is new equipment going to be more reliable, repair components will be more readily available, and newer HVAC equipment will likely be more energy efficient than your current older equipment.

This is the time of the year when the weather will do some performance testing for you. If you are experiencing issues with your HVAC equipment, take a closer look and determine which course of action you should take. If you have more equipment than you can effectively manage on your own, or would like an independent third party evaluation of the condition and state of your equipment, look to an engineering firm that has experience in this area that can provide you with an in-depth analysis with recommendations to avoid future problems. The money you invest now will pay itself back several-fold in the avoidance of downtime and emergency repairs. An ounce of prevention truly is worth a pound of cure!