API Inspection / Repair Recommendation
| Site | Calder Bay · Weller Parish | RR # | OLE-RR 007 |
|---|---|---|---|
| Equipment ID | E-301 | RR # | OLE-RR 007 |
| Process Description | Charge Gas Aftercooler | RR # | OLE-RR 007 |
| Inspector | Ray Thibodeaux | RR # | OLE-RR 007 |
| Date of Finding | 8/7/26 | RR # | OLE-RR 007 |
FINDINGS:
During the 2026 Olefins Unit Turnaround, visual inspection of E-301 (Charge Gas Aftercooler) — Shell revealed corrosion that exceeded the acceptance criteria per API 510 section 7. Refer to the information below for specific dimensions of the aforementioned defects.
Localised pitting to 0.062 in deep at the nozzle ID. Post-grind UT confirmed 0.318 in remaining against a 0.280 in t-min.
RECOMMENDATIONS:
- Option 1: Blend grind to a 3-to-1 taper and re-measure.
JUSTIFICATION(S):
Pitting removed by grinding leaves the wall above the required minimum, so no weld repair is needed.
PHOTO REFERENCE:
No photos attached.