Facebook
RSS

Equipment Failure Codes


What is a failure code? Quite simply, it is a code that illustrates why an asset failed or the reason that the asset failed. Codes can be a number which is cross referenced to a list of actual code descriptions or more conveniently a series of alphanumeric characters that are a logical abbreviation of their descriptions. However, with modern database technology and available disk space, the full descriptions are increasingly being used instead of alphanumeric codes.

Where are they used?
They are generally used in maintenance systems or more commonly computerized maintenance management systems. They can be used on a work order for an asset or equipment failure. The codes are normally input by the person reporting the problem at the time of failure or by the technician when closing the work order.

Why are they used? Failure codes provide a convenient method of getting statistics about equipment failures or breakdowns. CMMS systems will generally have a reporting function that allows reports to be run on specific failure codes for your equipment. Let's say that you have a machine, which has problems with alignment. You could run a report for a period of time and, by selecting a failure code, determine how many times your machine has had misalignment problems. These statistics are invaluable in any continuous improvement program.

The complexity of the codes will be dependent on the know-how of the system users. For example, if unskilled operators are using the codes to report equipment problems they will have to be of a general nature. Conversely, if trained technical people are the users then the codes can be more complex. For this reason some companies prefer to use both failure codes and problem codes. Problem codes are more a list of symptoms than causes. These would typically be used by operators with the technicians entering the additional failure code after the work was completed.

How are they Formed? Whatever method you chose, your operators and maintenance personnel will soon become familiar with your own codes providing that the list is limited to a manageable number. I firmly believe that there is no need to have more than perhaps 20 or 30 codes and that these need only be of a general nature. For example, if you use your CMMS to report on occurrences of "Misalignment" on a particular piece of equipment those who are familiar with the equipment will know where the misalignment was likely to have occurred, making more specific information unnecessary. Problems will occur when users selecting a code are presented with a drop down list with 50 or 100 codes on it and choosing one becomes difficult. In this case you will find the catch-all "other" being selected too regularly.

If your CMMS supports a hierarchical failure code structure or where codes can be associated to areas or equipment so much the better. In this case you will require more of them simply because they are equipment specific but there may be only 5 or 10 codes for each type of equipment. Functionally this is not a problem because after selecting an asset in the CMMS, users will still only have to choose from the limited number of failure codes associated with that asset.

I have deliberately limited the codes in the illustration below to four characters in an attempt to show that this can provide a good indication of the full description. To prove the effectiveness of this have a look at all the codes and descriptions just once then cover up the descriptions and you will find that you are able to remember most of them. After they have been in use for a week or two you will memorize them all effortlessly.

Alphabetic list of typical Four-Character Codes and Suggested Abbreviations

No CODE DESCRIPTION
1 ARLK Air Leak
2 ALRM Alarm or Problem Indicator
3 BRNG Bearing Problem
4 CALB Calibration Problem
5 DIRT Dirt or Foreign Matter Problem
6 ADJS Equipment Adjustment Required
7 CUTO Equipment Cutting Out
8 JAMD Equipment Jammed
9 HUNG Equipment PC or Microprocessor Hung Up
10 XLUB Excessive Lubrication
11 NOIS Excessive Noise
12 VIBR Excessive Vibration
13 LLUB Lack of Lubrication
14 WIRE Loose or Broken Connection or Wire
15 ALIN Misalignment
16 NAIR No Air
17 NPWR No Power
18 OLLK Oil Leak
19 OPER Operator Error
20 XHOT Overheating or Smoking
21 BROK Part of Equipment is Physically Broken
22 SHRT Short Circuit
23 VNDL Vandalism
24 WTLK Water Leak
25 NOGO Will Not Start

The above codes are of a very general nature and some of them may be considered to be more like problem codes than failure codes but you will find that almost all your failures can be linked to one of them. It is also recognized that you will have local requirements that may mean adding a few more of your own. If this is the case you may also find that you can drop some of those provided if they are inapplicable.

Additional functionality can be added to the codes to suit your own site. For example a number 1, 2 or 3 could be added to indicate priority or seriousness of the failure. A problem with excessive vibration could then become 1VIBR, 2VIBR or 3VIBR dependent on the reporter's perception of the seriousness of the problem. Alternatively (or additionally), you could add a letter A, B or C to represent the shift when the problem occurred.

In conclusion, the methods outlined in this document are those recommended by the writer. We do recognize that here are other ways of doing things and we are always interested to here about these.
[ Read More ]

Unlock the potential of Analytics for Planning, Scheduling and Work Management

For registration please click on the link below
https://www4.gotomeeting.com/register/168370295

Maximo manages large amount of work orders challenging to prioritize ,plan and schedule work order with constraints like labor availability, materials ,tools, services and asset availability .These may impact your operations ,maintenance ,reliability & engineering in one or many ways like:
- Pending PM compliance
- More failures and less reliability
- Increased productivity loss
- Increased wrench time
Join us on the webinar to overcome these issues.
Key takeaway:
- Understand & manage WO backlog
- Effective ways to improve planning & scheduling
- Understanding future work
- Understand planning compliance
[ Read More ]

Maintenance Approaches - Proactive and Reactive


Maintenance can be broken into categories – Proactive and Reactive. Proactive is further divided into two classes- Preventive and Predictive while Reactive can be split into – Corrective and Emergency.
Reactive maintenance, the easiest approach, the oft-used approach, the out-of-sheer-habit approach. But look closer and you will find that the worst thing that a company can do is spend a lot of time in reactive maintenance.
Reactive approach includes a lot of unplanned downtime in contrast to planned downtime.

Often many reasons incline a company towards reactive way of maintenance. Like:
1. High pressure environment
2. Rigorous production schedules
3. Heavy targets
4. Top Management’s attitude
5. Poor record-keeping making proactive approach infeasible
6. Lack of automation in production-records and scheduling documents
7. Lack of awareness of means and methods of non-disruptive maintenance
8. Ease of application and out of regime

But, this kind of a company is not always a world-class company. Because world-class companies only apportion about 5 per cent of maintenance time to the reactive approach. The major part is done the preventive way. The reasons for doing that are born out of a long-term mindset, focus on sustainability, regard for safety, well-planned direction and a clear vision.
[ Read More ]

You can avoid some expensive burn-outs if you opt for preventive maintenance and not reactive maintenance



WE will cross the bridge when it comes. That’s a nice philosophy to have in life.
But not in a plant. Certainly not with machines.

Every machine comes with a suffix called maintenance attached to it.
That’s why the term called AMCs (Annual Maintenance Contracts) is a highlight of many a sales negotiation talk too.

And yet, maintenance is orphaned once the machine gets out of the crib.
The crying baby gets the milk. So is the approach we often take with maintenance too.

But, maintenance is not just strutting about with some nuts and bolts to be used when something screeches, or howls or makes a noise.

Its scope is broad and deep and that’s probably why we still don’t embrace the right approach to maintenance.
[ Read More ]

Your Assets Need Care



Exercising 20 minutes every morning is better than a heart-transplant. Won’t the same common sense apply to your maintenance and reliability?

Have you thought about it?
It seems intriguing and yet so true.
As engineers lost in the iron-clad world of engines, assembly lines, tool-boxes, turbines and metal all around; it’s easy to forget what machines are all about.

It’s easy to forget that just because they are machines, they can not be treated with some attributes a human is naturally eligible for – care, attention and rest.

While the human resources in your factory get the above entities as fair rights and can even rouse a commotion if neglected for long; machines can not make noise about their rights.
Nevertheless, they too need some attention, care and break-time. They might not have a Union to represent their case but beware of the noise they might make, at the wrong time and at very wrong decibels.

Ask yourself some brutal and candid questions – Do you treat maintenance as a necessary evil? Just as a formality? Often neglect it? Even when done, it’s only with a ‘we will fix it when it breaks’ approach?

How many of us would laugh at a word like ‘Planned Downtime’?
How many of us scoff a term called ‘Preventive Maintenance’?
How many of us would shrug shoulders when asked about the number of hours devoted to regular upkeep of machines?

Now answer this one.
How many of us would mock a doctor if s/he suggests you to exercise, take preventive medicine or vaccination to stay away from heart attacks?

The ‘you must be kidding’ guffaw suddenly vanishes.
Answers vary, right?
Take a moment here before it’s too late to amend.

A machine may not have a heart but the rules of preventive healthcare apply to it in almost an equal degree.
Preventive maintenance is not an alien term these days. Not at least in world-class companies or in international counter parts. Sadly, the state of affairs is very acutely dismal in India.

Just like a medical emergency can be avoided by regular and preventive healthcare, so can plant emergencies be avoided, if care of machines entails preventive maintenance, instead of reactive maintenance.

For the uninitiated, preventive genre of maintenance is something that is done via planned downtime and predictive shutdowns.

Critics and naysayers apropos this concept may argue that it’s all a Phirang concept and very very copybook style, hence not being practical at all.

Reasons you avoid it

Some arguments are reasonable. Yes, an engineer’s plate is always full of hectic schedules, tight deadlines, production targets etc. If one has to be competitive and be on the top, one can’t afford to waste time on planned outages and other stuff. So many big deals and orders would than just pass us by like a ship in the night, is a plausible question.
But ponder again, with that kind of an attitude, would the same company be able to hold the appellation of being ‘big’ or ‘major’ as one may proudly refer to it. It’s not a world class company if it treats maintenance like a step-child, right?

Any international-level comparison is proof enough that great companies treat preventive-reactive maintenance in an 85 per cent: 5 per cent split. It’s weird that top management of companies in India is so negligent. So it’s not all theory and idealistic. In fact, preventive approach is more pragmatic than quixotic.

Consider the healthcare analogy here.

People are ready to take the risk of a long sick leave, lifelong maladies, costly surgeries, obnoxious chemical doses and treatments, and utter physical discomfort but they would always shrug off one day of annual medical check-up or 15 minutes of daily exercise. Who has got the time, is the rhetoric one often hears.

But isn’t vaccination always a better option? If you spare one day or small breaks to save you a big stretch of unproductive and distressing treatment time, what’s the harm? Specially because in some cases, it can save lives.

Machines or humans; both depreciate with time, both can breakdown, but if you keep taking the breaks for fitness and health, the longevity is visible. So is productivity.

There are always some hours one can take out from an evening or night time window. One can plan your inventory in advance so that planned downtime does not interrupt production targets. Even if it is mission-critical equipment, let’s say in a turbine or a nuclear reactor, one can always use redundancies and back-up.

Whether it’s the heart or a big machine, the arteries need to be lubricated timely, else they fail, and in most cases without any warning. A heart attack always hurts.

Side-effects

The truth is harsh and there is a much bigger picture to preventive maintenance than mere productivity improvement, or averting last-minute breakdowns.
Engineers or technically inclined professionals are cogent, intelligent and in a better position to make a difference to this world, and yet they don’t use these powers. They say the opposite of love is not hatred but indifference. Isn’t it anything but indifference that ultimately leads to grave tragedies like BP oil leak or Bhopal gas incident? Think about the safety hazards, the environmental repercussions and over-energy-usage that are a direct backwash of maintenance-neglect.

Look closer, and we will discover the crevices where we let it slip away.
One major gap is the way we document and manage production-records. There’s a conspicuous lack of proper systems or automation on that area, which deters preventive maintenance. And that coupled with management’s attitude is also the reason why even well-chalked out AMCs (Annual Maintenance Contracts) are not administered properly.

The long-term repercussions of these gaps can be quite huge.

When, a machine breaks down abruptly, it’s hard to fix it on the go. The spare parts are not always available. It takes some time to retune something when it goes out of kilter.

Then there are other implications. Those hours of reactive repair translate into time-creeps, schedules going awry, quality getting affected, supply chain getting hammered and of course the eventual impact on top line, bottom line, lost man hours, and sometimes serious safety issues. It’s funny how we forget that small mosquitoes can upset even an elephant.


And yet, we still ignore the obvious woodcutter’s rule of sharpening one’s axe.
Your machine is your axe. It helps you to cut through all those targets, ambitious projects and business momentum with efficiency. That’s exactly why it’s wiser to sharpen it once in a while.

After all there’s still that time-tested adage – A break is always better than a breakdown.
[ Read More ]

A driving lesson for operations and maintenance


Picture this. Personnel from a plant are driving along a road in an automobile. The maintenance manager is driving blindfolded. Sitting beside the maintenance manager is the mill manager who is peering in the rear view mirror. In the back seat, the production manager is urging the maintenance manager to proceed at top speed while simultaneously warning him about a flat tire.

This situation is obviously out of control. In a plant setting, it is equally out of control. Plant management frequently focuses on past data analysis rather than future improvements. Maintenance is often “blindfolded” due to tight short-term cost control measures instead of long-term results. Meanwhile, the operations group is becoming desperate and therefore dictates what maintenance should do.

The behavior described has many names—the circle of despair, unplanned maintenance, or reactive maintenance. Whatever name you prefer, you must understand the point from a maintenance perspective. Maintenance work needs management through good maintenance planning and scheduling. How does one start such an improvement? From the thousands of possible ways to start, this post will discuss a starting point: “Maintenance and Operations 101.”

One key element of an operations and maintenance partnership is well-organized daily or weekly planning and scheduling meetings. Although you may already have these meetings, are they as productive as they could be? The purpose of such meetings is finalizing a schedule and possibly finalizing minor planning. The meeting objectives or agenda are the following:
• Review work from yesterday
• Update work for today
• Finalize work for tomorrow
• Finalize schedule for following week by 2 PM on Friday
• Track planning and scheduling of key metrics
• Schedule 100% of work force including contractors
• Resolve new work requests.

The meeting should be attended by the area or department operations representatives, maintenance supervisors, and planners. The operations liaison must have sufficient clout to set a schedule without overriding by others after the meeting. Maintenance should represent both mechanical and E/I maintenance.
The meeting should occur mid-day and last no longer than 20 minutes. Keeping the meeting to this limit with effective results requires the following:
• Having a priority chart: Planning for work in the backlog before the meeting
• Knowing the availability of people
• Realizing that all meeting agreements are final—any change is break-in work.

Tracking the performance of these meetings is critical. Upper management must drive—not simply support—the planning and scheduling meetings. A simple scorecard (available at the web site noted above) will help. The scorecard tracks the following:
• Did all the proper people attend?
• Did attendees do their preparatory work?
• What is the level of unapproved work orders in the backlog?
• Was the first cut of the schedule for the following week posted on time?

In addition to the meeting indicators, the group should track the classic planning and scheduling indicators such as scheduling compliance, planning compliance, paper machine compliance, etc.
[ Read More ]

Webinar - "Maximo data analysis and reporting for asset reliability and maintenance"

More than 200 Maintenance and Reliability professionals attended this webinar on Maximo data analysis and reporting. The webinar covered the different aspects of Maintenance and Reliability and also showcased some real life reports like, PM performance, RCM, WO management, Failure Analysis, MTBF, MTTF, RCA , cost analysis and many more.

To view the recording of this webinar please click http://www.assetanalytix.com/view-webinar
[ Read More ]