The challenge
Steel silos lose wall thickness to corrosion, and their seam welds and anchor bolts carry wind and filling loads. Thinning and bolt fatigue cannot be judged by eye.
The plant needed measured data on the condition of each silo shell, welds and base connections.
Scope of works
- Visual survey of shell plates, stiffener rings and brackets
- Ultrasonic thickness gauging at multiple elevations to map wall loss
- Magnetic particle and dye penetrant testing of shell seam welds
- Torque and NDT checks of anchor bolts and flange connections
Outcome
Each silo now has a thickness map and weld record, giving the plant a clear basis for repair and remaining-life decisions. The same method was used on steel silos in French Guiana. See all NDT services.
Photo record
