Reliability Engineering

Defect Register

A defect register is a controlled list of identified equipment defects, risks, status, ownership, and required corrective actions.

What this term means in maintenance

A defect register is a controlled list of identified equipment defects, risks, status, ownership, and required corrective actions.

What a defect register may contain

Typical fields include:

  • Asset
  • Defect description
  • Date detected
  • Detection source
  • Risk
  • Priority
  • Current condition
  • Interim control
  • Required action
  • Owner
  • Target date
  • Status
  • Related work order

Practical example

An inspection identifies corrosion on a support structure. The defect is recorded, risk assessed, monitored, and linked to a corrective work order.

Defect register versus backlog

The defect register captures known equipment conditions. Backlog contains approved maintenance work. One defect may create one or more work orders.

Review

Teams should review critical, aging, deteriorating, and overdue defects regularly.

Common mistake

Recording defects only in inspection comments makes them difficult to prioritize and follow through to closure.

Keep exploring connected CMMS, reliability, and maintenance planning terms.

Glossary FAQs

What is a defect register?

A controlled list of identified equipment defects, risk, status, ownership, and actions.

How is it different from backlog?

The register stores conditions; backlog stores approved work.

What defects should be reviewed first?

Critical, deteriorating, aging, overdue, and high-consequence defects.

Turn Maintenance Definitions Into Action

MaintBoard helps plant and facility teams move from scattered maintenance records to organized work orders, preventive maintenance schedules, spare parts control, inspections, calibration, and audit-ready history.