Products used in the erection of API tanks
Large field-erected storage tanks require the coordinated execution of shell erection, lifting, fit-up, welding and inspection. Bygging provides equipment designed to mechanise several of these operations and enable more of the construction process to be performed close to ground level.
For tanks erected using the top-down method, the top shell course and roof structure are constructed first. Hydraulic jacks then raise the completed portion of the tank to create space for the next shell course. This lift-and-erect cycle is repeated until the complete tank shell has been constructed. The welding itself can be done using automatic girth welding machines or manually, as per the project’s requirements.
Bygging's equipment for API tank construction includes:
Tank Jacking Equipment
Hydraulic tank jacking equipment for controlled lifting of the tank during top-down erection, repairs, re-bottoming and other tank lifting operations.
Tank Welding Equipment
Automatic tank welding equipment including submerged arc automatic girth welders for horizontal joints, electrogas welding machines for vertical shell joints and SAW tractors for tank bottom and shell-to-annular welding.
Working Platform
Working platforms providing working access around the shell during erection, welding and inspection activities.
By combining hydraulic lifting with automatic welding, tank contractors can reduce dependence on large cranes and extensive scaffolding, reduce the amount of work performed at height and improve productivity during shell erection.