C3-0160 STIRG Update
Summary
The latest issue of the Service Termination Issues Reporting Guide (v4.3) contains errors. This is the latest version released recently at the end of February 2026 which introduced the new Asset Condition code C21. With this release, Defect Code B07 should have also been updated to include guidance on using C21 rather than reporting B07s when faced with situations regarding combined neutral earth connections. The latest release makes mention of the C21 code, but also still includes (now) incorrect guidance on aborting the job and reporting as a B07. Further to this, the Emergency Defect Code A05, whilst still listed at the top of the document in the table of codes, the actual A05 section with instructions on what to notice and how to report an A05 is now completely missing.
Latest update and next planned activity
Date of latest update
Latest Update
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Impacts Overview
Priority and rationale
Priority last updated on 17 Sep 2026
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