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RLIFE

RLIFE — Remaining Life

The estimated period that an asset or component can continue to operate safely before reaching its limiting condition.

Definition

Remaining Life (RLIFE) is the estimated period during which an asset, component or equipment item can continue to perform its intended function safely and reliably before reaching a limiting condition requiring repair, replacement or retirement. Remaining life assessments consider degradation mechanisms, inspection results, operating conditions and engineering analyses to support asset integrity management and lifecycle planning.

Why It Matters

Remaining Life estimates how long an asset can continue operating safely before repair, replacement or retirement becomes necessary.

In Practice

Remaining Life is commonly estimated using corrosion rates, Fitness-for-Service assessments, inspection history and engineering analysis to support inspection planning and maintenance decision-making.

Common Misuse

Remaining Life estimates the future serviceability of an asset, whereas Fitness-for-Service evaluates whether the asset is currently suitable for continued operation under specified conditions.

Term Details
Synonyms:
RLIFE; Remaining Life; Residual Life; Useful Remaining Life
Classification:
Mechanical Integrity
Concept
Advanced
Applications

Asset Integrity; Reliability Engineering; Inspection.

Where It's Used

Oil and gas.; Petrochemical.; Power generation.; Manufacturing.; Infrastructure.

References

API 579-1/ASME FFS-1; API RP 580

See It In VisualAIM

VisualAIM connects glossary concepts to the asset records, inspection histories, and workflows they describe.

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