A defect is not only a broken part
A defect is any condition that erodes value, reduces production, creates waste or increases safety, environmental or quality risk. It can be physical — looseness, contamination, heat, leakage — or systemic: an ambiguous procedure, wrong spare, missing torque value, poor operating envelope or design that makes correct maintenance difficult.
The practical shift is from “how fast can we close this work order?” to “what allowed this work to exist, and how do we prevent its return?”
Five common entry points
| Source | Typical defect | Control |
|---|---|---|
| Design / procurement | Poor maintainability, undersized component | Reliability requirements and design review |
| Installation / commissioning | Soft foot, pipe strain, contamination | Acceptance standards and baseline data |
| Operations | Outside operating envelope, poor start-up | Operating discipline and visual controls |
| Maintenance | Wrong fit, torque, alignment or lubricant | Precision procedures and verification |
| Materials / information | Wrong spare, stale drawing, missing history | Master-data and stores controls |
The daily elimination loop
- Capture abnormalities in plain language with asset, condition and evidence.
- Triage by consequence and recurrence, not by whoever shouts loudest.
- Assign a small cross-functional action team with operations, maintenance and engineering as needed.
- Remove or mistake-proof the source; do not stop at component replacement.
- Verify after an exposure period that the condition and associated work did not return.
- Standardize the lesson in procedures, designs, spares and training.
Leading indicator
Count verified defects eliminated and recurrence avoided. “Ideas submitted” and “work orders closed” are activity; they do not prove reliability.
Start where pain and control overlap
Choose one constrained system with visible recurring work. Build a Pareto from credible failure and cost data, walk the assets with the people who operate and repair them, and select defects the team can remove within days or weeks. Early wins create capacity; that capacity funds deeper design problems.
Do not launch defect elimination as another campaign layered onto an impossible schedule. Protect time, remove approval friction for low-risk fixes, and review recurrence. Five stars because the method changes the economics of maintenance: it eliminates demand instead of only processing it faster.
References & further reading
This page is original explanatory writing. Follow the sources for the complete material and context.
- Reliabilityweb. Eliminating Defects from Maintenance Workmanship. Open source
- Reliabilityweb. Defect Elimination From a CMMS Perspective. Open source
- Winston Ledet et al.. Don't Just Fix It, Improve It! Open source
Disclaimer. This independent educational summary is written entirely in Rob Reliability's own words. It is not affiliated with or endorsed by the authors or organizations cited. No source figures or substantial source text are reproduced. This page is a field guide, not a substitute for the originals.
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