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Run-to-Failure vs Preventive Maintenance: When Doing Nothing Is the Right Strategy

Run-to-Failure vs Preventive Maintenance: When Doing Nothing Is the Right Strategy

Run-to-failure deliberately runs an asset until it breaks. On the right asset that is smart, not lazy. On the wrong one it is a catastrophe waiting to happen.
Run-to-Failure vs Preventive Maintenance: When Doing Nothing Is the Right Strategy
Run-to-Failure vs Preventive Maintenance: When Doing Nothing Is the Right Strategy

Key takeaways

  • Run-to-failure deliberately operates an asset until it fails, then repairs or replaces it.
  • On low-criticality, cheap, redundant assets, run-to-failure is the rational choice.
  • On critical assets, run-to-failure invites catastrophic, expensive, unsafe failures.
  • It is a deliberate strategy chosen by criticality — not an absence of strategy.

Short answer: Run-to-failure means deliberately running an asset until it breaks, then fixing it — no preventive work. On a cheap, non-critical, easily-replaced asset, that is the economically correct choice. On a critical asset whose failure stops the line or creates a hazard, it is reckless. The skill is choosing run-to-failure deliberately by criticality, not by neglect. See also condition based vs time based maintenance.

When run-to-failure is right

  • Low criticality — failure does not stop production.
  • Cheap and fast to replace.
  • Redundant or non-safety-related.

When it is dangerous

  • Critical assets that stop the line.
  • Safety- or environment-related equipment.
  • Long-lead or expensive to replace.

Why it is a real strategy

Preventive work on a trivial asset wastes labour better spent on critical equipment. Choosing run-to-failure for the trivial frees resources for what matters — that is reliability-centred thinking, not laziness.

Deciding by criticality

An asset criticality assessment sorts equipment by failure consequence. The low end gets run-to-failure; the high end gets preventive or condition-based care. The matrix makes the call explicit.

How OEE relates

Run-to-failure on a non-constraint costs little OEE. The same strategy on the bottleneck would be disastrous — which is exactly why criticality, not habit, must drive the choice.

See how Fabrico captures this automatically on your lines — explore OEE for manufacturing or book a demo.

Related reading

Frequently asked questions

Is run-to-failure just neglect?

No — chosen deliberately by criticality, it is rational.

Which assets suit it?

Cheap, non-critical, redundant, fast to replace.

How do I decide?

Use an asset criticality assessment.

Can the bottleneck be run-to-failure?

No — its failure costs the whole plant.

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