Configuration control — how released drawing changes are tracked After a drawing is released, which element on the sheet provides an authoritative, chronological log of modifications for audit and traceability?

Introduction / Context:
Once a drawing is issued for manufacture or construction, changes must be controlled to prevent mismatches between design intent and delivered work. The standard mechanism is a revision control table on the sheet itself.

Given Data / Assumptions:

• A drawing has already been formally released.
• Subsequent changes require documentation and approval.
• Company or industry standards define revision identifiers and sign-offs.

Concept / Approach:
The revision block (synonym: Record of revisions) records each change with a revision letter/number, description, date, drafter/checker, and approver. This block, combined with revision clouds/tags on the affected views, provides a closed-loop record linking what changed to where it changed.

Step-by-Step Solution:
Enter a new revision row when modifying released geometry or notes.Update the title block’s revision field to match the latest row.Cloud and tag the changed areas for this revision only.Obtain approvals; release the revised sheet to distribution.

Verification / Alternative check:
Procurement, QA, and field personnel can correlate the part built with the drawing revision listed on travelers or work orders. Discrepancies flag potential use of superseded documentation.

Why Other Options Are Wrong:

• Basic title form: identifies but does not enumerate changes.
• Working drawings: the whole package; revision control is a specific table.
• Portable documents: a format, not a control method.

Common Pitfalls:
Missing approver signatures or failing to synchronize model and drawing revisions can cause costly rework.

Final Answer:
A revision block