The challenge
The steel silos at the Gourbeyre plant showed rain-runoff staining, coating breakdown and surface oxidation, with possible thinning and loose or corroded flange bolts.
Close-up inspection was needed at height, without stopping batching or dispatch.
Scope of works
- Dual-rope rope access from the silo headframes
- Visual testing (EN ISO 17637) of shell panels, stiffener rings, weld toes and brackets
- Ultrasonic thickness of shell plates and cone transitions
- Calibrated bolt torque audit of flanges to EN 1090-2, tightening loose fasteners
Outcome
The silos were assessed in full and loose connections re-tightened, with plant logistics running throughout. See the related audits at Arnouville and Petit-Canal, and our NDT services.
Photo record
