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Yellow Line

Yellow Line — Yellowlining

The process of marking engineering drawings to record verified field conditions or completed changes prior to formal document revision.

Definition

Yellowlining is the controlled process of marking engineering drawings to record verified field conditions, completed modifications or construction changes that have been confirmed in the field but have not yet been incorporated into the next controlled document revision. Yellowlines provide verified engineering markups that support as-built documentation and configuration management.

Why It Matters

Yellowlining records verified field changes pending incorporation into controlled engineering documentation.

In Practice

Unlike Redlines, which typically identify proposed or pending engineering changes, Yellowlines generally represent changes that have been completed and verified in the field prior to updating the controlled documentation.

Common Misuse

Yellowlining records verified field changes, whereas Redlines typically identify proposed or pending engineering changes awaiting implementation or verification.

Term Details
Synonyms:
Yellowlining; Yellowline Markup; Field Verified Markup; As-Built Markup
Classification:
Engineering Documentation
Methodology
Intermediate
Applications

Document Management; Configuration Management; Engineering Design.

Where It's Used

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

References

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