Which evidence should be indexed?
Register the issued drawing, redline or field record, affected asset, approval status and proposed update before changing the native file.
| Change | Source | Check |
|---|---|---|
| Equipment tag | Field or approved change | Asset register |
| Cable route | Marked-up plan | Field evidence |
| Termination | Inspection record | From and to |
| Protection device | Approved change | Engineer review |
| Revision | Document register | Supersession |
What should remain open?
Keep a change open when the source is unclear, the installed condition conflicts with design or the responsible reviewer has not accepted the evidence.
- Unverified redline
- Conflicting tag
- Missing approval
- Unclear route
- Design deviation
Who accepts the update?
The drafter prepares the file, while the project team and responsible engineer decide whether the evidence supports an as-built issue.
Common questions
What else should the bid team know?
What should a substation as-built update include?
It should record issued drawing, change source, asset, evidence, reviewer and disposition.
Who reviews a substation as-built update?
Document control and the responsible engineer approve the installed record according to the project process.
Does drafting approve the engineering design?
No. The responsible registered engineer makes design decisions and performs engineering sign-off.
Primary sources
- IEEE C2-2023 National Electrical Safety CodeIEEE Standards Association
- IEC 61936-1:2021International Electrotechnical Commission
- IEC 60617 Graphical Symbols for DiagramsInternational Electrotechnical Commission
- 29 CFR 1910.269Occupational Safety and Health Administration