Fixing a defect and eliminating a defect are not the same job. A mining fleet can route every fault to a work order, close it clean, and still watch the same hydraulic failure or cracked bucket pin come back next month — because repair restores the machine, it doesn't remove the cause. Defect elimination is the program that closes that gap: it treats recurring faults as a backlog to be permanently drained, not a queue to be endlessly re-worked. This guide shows how to build one for a mining fleet. Book a defect-elimination demo to see it in practice.
Stop repairing the same defect. Eliminate it.
Repair puts the machine back to work; it doesn't stop the fault returning. A defect elimination program drains your recurring faults for good — surfacing them, root-causing them, and proving each one gone.
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OPEN
Final-drive overheat6 recurrences · haul trucks
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RCA
Bucket pin crackingRoot cause in progress
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GONE
Hose chafe at pivotEliminated · 0 recurrences 60d
Most mining maintenance runs reactive: a defect appears, a work order closes it, the machine goes back out, and nobody asks whether it'll be back. Defect elimination flips that — it keeps a living list of the faults that keep returning and works them down to zero, one root cause at a time. Below is the difference it makes, how to prioritize the backlog, the elimination workflow, and what "eliminated" actually has to mean.
Repair vs eliminatethe mindset shift a defect elimination program depends on
Same defect, two completely different responses. One keeps the fleet limping; the other removes the fault from the fleet's future.
- Defect appears, work order closes it
- Machine back out, cause untouched
- Same fault returns next cycle
- Budget bleeds on repeat labor & parts
- Reliability flat, team firefighting
- Recurring defect added to a backlog
- Root cause found, not just the symptom
- Corrective action removes the cause
- Verified gone — recurrence tracked to zero
- Reliability climbs, backlog shrinks
The payoff compounds: every defect truly eliminated is one that never consumes another work order, another parts order, or another hour of lost production. That's why a defect elimination program outperforms even a well-run reactive shop over time. See the defect-to-work-order flow that feeds the backlog, or book a demo of defect trend tracking.
What to kill firstprioritizing the defect backlog by frequency and consequence
You can't eliminate everything at once. Plot each recurring defect by how often it happens and how bad it is when it does — the top-right corner is where a program earns its keep.
The frequent-and-serious quadrant is where elimination pays back fastest — these are the defects stalling dig faces and draining the reliability budget. Work them first, then move down the grid. See defect trend analysis that plots frequency against downtime for every fault.
The funnela five-stage defect elimination process that drains the backlog
Every defect in the backlog runs the same funnel. A defect only leaves it at the far end — verified gone, not just repaired.
- 1SurfaceRecurring faults flagged from inspection and work-order history
- 2PrioritizePlaced on the frequency × consequence matrix
- 3Root causeInvestigate the real cause, not the symptom
- 4Corrective actionPM change, spec fix, operator coaching, supplier swap
- 5Verify & closeRecurrence tracked to zero before it's marked eliminated
The stage that separates a real program from a wish list is the last one: a defect isn't eliminated when the corrective action is applied, it's eliminated when the fault stops coming back and the data proves it. See work-order and corrective-action tracking across the whole funnel.
"Eliminated" means proventhe three tests a defect must pass before it leaves the backlog
Marking a defect eliminated on faith is how backlogs quietly refill. Hold every closure to these.
The actual cause is identified and documented — not "replaced the part again."
If it's a systemic mode, the fix reaches every affected unit, not just the one that failed.
A defined watch window passes with no return of the fault, confirmed in the data.
Only when all three hold does a defect move from the backlog to the eliminated list — and stays there under review. Sign up free and standardize your defect codes so recurrence is trackable from the first report.
Measure the drainthe KPIs that show a defect elimination program is working
A program you can't measure is a to-do list. These four show whether the backlog is actually shrinking.
Repeat failure rate is the one that proves the point: when a defect you targeted stops recurring, the rate drops and stays down — that's an eliminated fault, not a quiet one. Book a demo of defect-elimination reporting trended over time.
Off the backlogwhat elimination looks like on the record
- RCACause: hose routed against sharp bracket edge
- FIXRe-route + guard, applied to all 4 loaders
- VERIFIED0 recurrences across 60-day watch window
One nuisance defect, hit across four loaders, root-caused once and guarded out fleet-wide — then held in a 60-day watch before it counted as gone. That's eleven future recurrences that never happen. See how PM optimization locks in a corrective action once a cause is removed.
From the reliability desk
We were proud of our work-order closure rate until someone pointed out the same twenty defects kept reopening it. Once we built an actual elimination backlog and refused to call anything "done" until it went 60 days without returning, our repeat rate halved in two quarters. The backlog shrinking week over week did more for the crew's morale than any uptime target — they could finally see faults leave for good instead of circling back.
Defect elimination FAQs
What is a defect elimination program?
It's a structured reliability practice that permanently removes recurring equipment faults instead of just repairing them each time. Defects that keep returning are added to a backlog, root-caused, fixed at the cause, and verified gone — so the same failure stops consuming work orders, parts and downtime cycle after cycle.
How is defect elimination different from defect tracking?
Defect tracking records and routes faults to repair — detect, fix, close. Defect elimination goes a step further: it targets the faults that recur, removes their root cause, and proves recurrence has stopped. Tracking keeps the machine running; elimination stops the defect from coming back at all.
How do I decide which defects to eliminate first?
Plot each recurring defect by frequency and consequence. The frequent-and-serious quadrant — repeat final-drive faults, brake issues — pays back fastest and goes first. Rare-but-serious gets planned, frequent-but-minor gets batch-fixed, and rare-minor is just monitored.
When can a defect be marked "eliminated"?
Only when three tests pass: the root cause is named and documented, the corrective action is applied to every affected unit, and a defined watch window passes with zero recurrence confirmed in the data. Marking it eliminated on faith is how backlogs quietly refill.
What data does a defect elimination program need?
Consistent defect codes, accurate work orders tied to the right asset, and full repair history — so recurrence is visible and trackable. Without clean records you can't tell a returning defect from a new one, and the backlog becomes guesswork rather than a measured drain.
Build a defect elimination program that actually ends the repeat
HVI tracks every recurring defect, trends it by frequency and downtime, routes it through root cause and corrective action, and marks it eliminated only once recurrence hits zero. Defect tracking, trend analysis, work orders and maintenance history — live in under two weeks.
No credit card · Defect trend reporting from day one
