Approved
Written 8/22/26 by Nolan Prejean
Finding
Shell course 2 UT reading trending down. Recommend an additional CML grid at the next internal.
Formal write-up
Title
E-520 Additional CML Grid
Cause
Corrosion
Findings
Course 2 dropped 0.021 in since the 2023 survey, which projects to t-min inside two runs.
Acceptance criteria
API 510 section 5
Recommended options
- Add an 8-point CML grid on course 2 and re-survey at the next internal.
Justification
The trend is real but the wall is still well above minimum, so monitoring is the proportionate response.
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Attachments
Disposition
- ✓RR writtenNolan Prejean
- ✓Supervisor reviewCalder Bay Reliability
- ✓