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Subject: The Types of Maintenance
When you get MAXIMO you get CM, PM, and EM.
But when you are talking with the RCM theory guys and you ask about the "types of maintenance" they will open their books and say
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"The Official Categories of Maintenance tasks are:"
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CBM Condition based-monitoring, product monitoring,
PREVENTIVE MAINT. planned maintenance that happens regardless of the condition of the equipment. Ususally time based. Could include scheduled overhaul or replacement.
PREDICTIVE MAINT (PdM) use of gadgets vib, oil analysis etc and visual inspection. Note: PdM can be time based also.
FFT Failure finding task. DETECTIVE MAINT
REDESIGN/MODIFICATION
. which is a one-time change or modification.
RTF (Run to Failure), or breakdown.
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The MAXIMO worktype field is important in many ways. It is sometimes used in the determination of reactive maintenance (as with CM & EM).
The question is this: Should all CM work be called REACTIVE?
Answer: I say not.
There are equipment breakdowns and then there are CM's which say "Insulate the heat exchanger", or "Paint the Piping".
Thus the above is not truly a functional failure and you would not be running MTBF reports against this.
In addition, what about (CM) repair work which IS properly planned & scheduled on the weekly schedule?
I see these as being positive actions, e.g. they were properly planned & scheduled. Resources were scheduled, operations notified, and parts lined up.
Now, consider these maintenance activities versus repair work which was never placed on the schedule (but someone decided to do it mid-week (but it wasn't EM)).
The later is self-inflicted reactive.
So, in my book, reactive maintenance is one of two categories:
1) True functional failure, or breakdown (and usually coded as EM, or, CM with some high WO priority), or
2) Work done outside of the weekly maintenance schedule
With this understanding you can now build the SQL to define reactive maintenance.
w/br
John Reeve
Manager, Practice Leader Maintenance and Reliability Solutions
Cell: 423 314 1312
http://www.linkedin.com/pub/john-reeve/11/644/9b2