# Drawing Revision Log Template > Source: https://netray.co/tools/drawing-revision-log-worksheet > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: Free Tools ## Short answer An editable revision history log for engineering drawings with ECO reference, change description, approver and release date. ## Category engineering-plm ## Industry Discrete Manufacturing ## Audience - Document control - Design engineer - Quality engineer ## Tool **Kind:** worksheet **Mode:** editable **Columns:** #### Drawing number **Key:** dwg **Type:** text #### Title **Key:** title **Type:** text #### Revision **Key:** rev **Type:** text #### ECO / ECN ref **Key:** eco **Type:** text #### Description of change **Key:** change **Type:** text #### Drawn / revised by **Key:** by **Type:** text #### Approved by **Key:** approver **Type:** text #### Release date **Key:** released **Type:** date #### Status **Key:** status **Type:** select **Options:** - Draft - In review - Released - Superseded - Obsolete **Rows:** #### Manifold body **Dwg:** HM-300-100 **Rev:** A **Eco:** Initial **Change:** First release **By:** A. Mehta **Approver:** R. Khan **Released:** 2025-03-14 **Status:** Superseded #### Manifold body **Dwg:** HM-300-100 **Rev:** B **Eco:** ECO-2025-0211 **Change:** Port 3 thread depth increased to 14 mm **By:** A. Mehta **Approver:** R. Khan **Released:** 2025-08-02 **Status:** Superseded #### Manifold body **Dwg:** HM-300-100 **Rev:** C **Eco:** ECO-2026-0019 **Change:** Add anodize callout, update note 2 **By:** S. Rao **Approver:** R. Khan **Released:** 2026-02-20 **Status:** Released #### Manifold body **Dwg:** HM-300-100 **Rev:** D **Eco:** ECO-2026-0087 **Change:** Material 6061-T6 to 6082-T6 **By:** S. Rao **Status:** In review #### Cover plate **Dwg:** HM-300-200 **Rev:** A **Eco:** Initial **Change:** First release **By:** S. Rao **Approver:** R. Khan **Released:** 2025-09-10 **Status:** Released **Totals:** #### Revision entries **Key:** dwg **Agg:** count **Notes:** Keep one row per drawing revision, never overwrite history. Mark the older row Superseded when a new revision is released. Match the revision letters or numbers to the title block and to the revision in your ERP item master. ## Content **Intro:** A drawing revision log is the register that proves which version of a drawing was current at any date. This editable worksheet gives you a simple, auditable log with ECO references, approvals and release dates that exports to Excel for document control. **Sections:** #### How to use the drawing revision log **Body:** Add one row for every revision of every drawing, starting with the first release. Record the drawing number, title, revision identifier, the ECO or ECN that authorised the change, a short factual description of what changed, who made and who approved it, and the release date. Set the status so that only one revision per drawing is Released at a time. Export to Excel for audits, or to CSV to load into your document system. A description should say what changed in the drawing itself, such as a dimension, note or material callout, rather than just 'updated'. **Bullets:** - One row per revision, never edit a past row except status - Always reference an ECO or note 'Initial' for revision A - Release date is when the revision became effective in the system - Keep superseded rows for traceability #### Revision schemes and the revision block **Body:** Companies use letters (A, B, C), numbers (01, 02), or a combination with separate scheme for prototype and production, for example P1 for prototype and A for first production. The revision block in the drawing title block records each change with its description, date and approval, and your log should agree with it. Standards such as ASME Y14.35 describe revision practices for drawings, but your own procedure governs. The key rule is that revision identifiers must be unique, ordered and never reused. Customers in aerospace and defense often impose their own flow-down on revision control and notification. #### Worked example **Body:** The sample log tracks a manifold body through four revisions. Revisions A and B are superseded, C is released and D is in review, linked to the material change ECO. An auditor asking 'what was the released drawing on 1 April 2026?' can answer from the log: revision C, released 20 February 2026. When D is approved, the approver and release date are filled, D becomes Released and C moves to Superseded. This simple discipline is what makes it possible to reconstruct what a shop was building at any time and to trace a nonconformance to a revision. #### Common mistakes **Body:** The most frequent error is the log drifting from reality: the drawing system shows revision D while the ERP item still shows C, so purchasing orders reference the wrong version. Another is overwriting a revision row instead of adding one, which destroys the history. A third is releasing a revision without an approver. Reconcile the log monthly against the ERP item revision field and the PLM or document system, and review all rows still in Draft or In review for stale entries that have been forgotten. **Cta:** Netray can help you reconcile drawing revisions against ERP item revisions automatically and flag mismatches. This log works on its own without that. **Faq:** #### What should a drawing revision log contain? **Answer:** Drawing number, title, revision, change description, authorising ECO or ECN, who revised and approved it, release date and status. Add file location or document ID if you store drawings electronically. #### How are drawing revisions identified? **Answer:** Commonly with letters or numbers that increase with each released change. Some companies use a different scheme for prototype revisions. Whatever scheme you choose, never reuse an identifier and keep it consistent across drawing, BOM and ERP. #### Should the log be in Excel or in PLM? **Answer:** If you have a PLM or document management system, it should be the master and this log becomes an export for audits. For small teams without PLM, a controlled spreadsheet works if access and backups are managed. #### How long do I keep drawing revision history? **Answer:** Follow your quality system, customer contracts and regulatory rules. Aerospace, defense and medical programs often require retention for the life of the product plus a number of years. Do not delete superseded revisions. ## Search terms drawing revision log template, drawing revision history excel, engineering drawing register, drawing control log, revision history table drawing, document control log template, drawing change log, drawing revision tracking --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json