Coating failure can be cosmetic, environmental or evidence of deeper metal loss. Photograph and map the condition before cleaning.
| Condition | Response | Evidence |
|---|---|---|
| Scratch, sound substrate | Approved local preparation/touch-up | Batch and repair photo |
| Blistering or underfilm rust | Expand inspection to sound coating | Damage map and cause review |
| Pitting/section loss | Engineering disposition | Measurement and repair approval |
| Ex joint or marking affected | Specialist review | Certified-document basis |
Close the cause as well as the surface
Check condensation, chemical splash, salt, washdown, drainage and galvanic contact. Repairing paint without removing the exposure source shortens the interval to recurrence.
Record surface preparation, environmental conditions, product layers, cure time and final inspection. Confirm fan clearance, drains and earthing after masking is removed.
Related reading: coastal motor specification and chemical-plant corrosion mapping.