Great inputs by other participants...to add my thoughts on this...many of them would be repeat also...
1. One-time review and execution of PMs in
PM backlog in a Shutdown opportunity would be effective only if these PMs have a clear basis. Else these invasive PMs might add to the Maintenance Cost and also introduce new defects into the Assets...The objective would be to do the right PM at the right interval and at the right time vis a vis clearing all the PM Backlog...
In my view, the issues mentioned of high Reactive Maintenance, Low compliance to Equipment Changeovers, Low compliance to PM Schedules need to be looked into Systemic Improvements rather than one time actions to clear the backlog. You'd need to focus on Planning & Scheduling, Change-Overs, Root Cause Analysis, Condition Monitoring and Reliability Centered Maintenance...
Focusing and working on the following aspects, based on strategic plan, would help:
- Maintenance Work Planning and Scheduling (right maintenance work at the right time by the right people)
- Effective Equipment Change Over with required compliance (including Procedures for safe and smoot changeover where the system is designed, alignment of the Change Over Schedules with the PM Schedules, training the field operators to perform the Changeovers as a routine)
- Quality of field work execution and feedback on work execution/work history, implementing Precision Maintenance
-
Good Condition Monitoring Program- Effective Root Cause Analysis for the Failures feeding back to the various systems/practices; Bad Actors identification and their management
- Review of PM Program for effectiveness (feedback of PM work execution, whether the tasks address the right failure mode/s and their optimum frequency...)
- Reliability Centered Maintenance based on RCM/FMEA and the development of Asset Strategies that are risk-based leading to an effective PM Program
Hope this helps, thanks
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Sundar Naranammalpuram P.
Navi Mumbai
Maharashtra
India
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Original Message:
Sent: 01-22-2020 06:10 PM
From: Derek Brown
Subject: PM Backlog
Hello all,
I was looking for some opinions on what your thoughts and experiences are with PM backlogs.
The plant I work in is a single train petrochemical production line that has a historical issue of backlog PM routines. There is some redundancy built in to the plant but not a lot, and some of the main pumps we have cannot be swapped over on the run, or the operators are not willing to.
I am new to the plant and when the planners asking what the issues are with backlogs, I was told it is mainly due to PM's cannot be completed as awaiting plant condition, I.e. a shutdown as there is no proper way to do the majority of these PM's on the run.
The issue seems to be there is a lot of reactive maintenance which obviously does not help so emergent work during running periods then gets prioritised before PM routines - and the cycle continues.
The management are now posing the question of if we could utilise contractors during shutdowns and outages to do the bulk of low skilled PM routines. Has anyone done this and what were your experiences?
For me the current routines are poor, with many time based routines and not a lot of condition monitoring (plant is 20 year old) and we should be shedding low value PM routines and moving as much as we can to CBM for equipment.
Appreciate your thoughts and experiences on PM backlogs and how you over came it.
Thanks
Derek Brown
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Derek Brown
Grangemouth AB
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