Developing, implementing and maintaining preventive measures

Fixing it is not the end; keeping it fixed is. We develop preventive measures against the root cause and track them, closing the loop.

Preventive measures defined, implemented and maintained — site view — Preventive measures defined, implemented and maintained · site view

Module 3 service scenarios — Module 3 — Troubleshooting & Overhaul · Service scenarios

Preventive measures fall into three classes: operational (standardised working), maintenance (added inspection and lubrication items) and improvement (structural or selection optimisation) — implemented in cost-benefit order.

Once implemented, measures are built into inspection and maintenance standards for the long term, with effectiveness reviewed periodically and revised whenever they lapse — so the fault cannot "come back in a different guise".

Developing, implementing and maintaining preventive measures on-site photo — Field photo: Developing, implementing and maintaining preventive measures

Service highlights

1
Three classes of measure: operational / maintenance / improvement
2
Implemented in cost-benefit order
3
Built into standards for the long haul, reviewed and revised periodically

How preventive measures are formulated

1
Mapping by failure mode: the strategy follows the failure mode: wear-type gets trend monitoring and life management; fatigue-crack type gets periodic flaw detection; corrosion type gets material and lubricant selection plus environment control; electrical ageing type gets insulation monitoring and periodic replacement; misoperation type gets interlocks and standard work.
2
Adding inspection items: the early signs of this fault are written into the inspection items: temperature limit, vibration threshold, description of abnormal noise, leakage criteria - so the next occurrence of the same degradation is caught at inspection stage instead of waiting for a shutdown.
3
Correcting maintenance intervals: fault data feeds back into the maintenance plan: intervals tighten where degradation is fast, relax where condition is stable. Intervals change from 'copied' to 'calculated'.
4
Controlling spare part quality: where a fault was caused by a failed spare part, the quality requirements go into the purchasing standard: brand, specification, material certificates, incoming inspection. The hidden cost of cheap parts is downtime - and that arithmetic must be shown to purchasing.
5
Operating and process rules: misoperation-type faults get operating procedures written: start-up sequence, load limits, abnormality handling, prohibitions. Procedures are written in language the team understands, backed by training and assessment.
6
Horizontal deployment: the lesson from one machine is applied to its peers: every unit of the same model in the same duty is screened for the same hazard - fix one place, protect a whole group.

Common Questions

Once preventive measures are set, how do you ensure they are executed?

Three ways: the measures are written into inspection cards and maintenance standards, becoming everyday actions rather than extra demands; execution records are filed with the job sheets and completion rates are checked in the monthly report; and at the quarterly review, fault data verifies effectiveness - the same fault not recurring means the measure works, while recurrence means the measure was inadequate or unexecuted, and it goes back for revision. The value of prevention must be measured in 'faults that did not happen', and that requires data to support it.

Will preventive measures increase our workload?

Slightly in the short term (more inspection and maintenance items), a net reduction over the long term. What is added is a few minutes of checking a day; what is removed is an emergency repair of hours or even days. The workload account must be done by the year: the annual hours invested in preventive maintenance are normally far below the emergency repair hours plus production losses of two or three unplanned stoppages.

Back to Module 03 — Troubleshooting & Overhaul → Related: recurrent fault improvement → Case report: tracking down rainy-season leakage trips →

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