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RL

RL — Redline

A marked-up engineering document showing proposed or actual changes requiring incorporation into the controlled revision.

Definition

A Redline is a marked-up engineering drawing, document or model that records proposed, approved or field-verified changes pending incorporation into the next controlled revision. Redlines provide a temporary record of modifications, corrections or as-built information to support engineering review, configuration management and document control.

Why It Matters

Redlines document engineering changes pending incorporation into the next controlled revision of the controlled document.

In Practice

Redlines are commonly created during construction, commissioning, maintenance and field inspections to capture changes before they are formally incorporated into controlled engineering documentation.

Common Misuse

A Redline records pending engineering changes, whereas an As-Built drawing incorporates those changes into the controlled engineering documentation.

Term Details
Synonyms:
Redline; Redline Drawing; Marked-Up Drawing; As-Built Markup
Classification:
Engineering Documentation
Concept
Intermediate
Applications

Document Management; Engineering Design; Configuration Management.

Where It's Used

Engineering.; Construction.; Oil and gas.; Petrochemical.; Infrastructure.

References

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