Projects for the offshore industry

The Riser Pull-in Trolley is a quite complicated structure of welded profiles with a total weight of 66 metric tons. Offshore Systems designed and engineered this trolley for heavy duty. The end customer Modec required a “lifetime” guarantee of 20 years and the usual offshore quality specifications.

Engineering did a solid job in preparing this complex order by ordering classified materials and choosing the best method of construction. Due to offshore quality specs all materials had to have a traceability report and every weld had to be ultrasonic-tested.

Fabrication: adviser for technical solutions

Putting a design into practice is a tough job. Specialists of the Project Office of IHC Fabrication were consulted to make this order a success. Although the engineers made a perfect design, assembly is a different discipline. 

Engineering suggested several modifications to make a perfect trolley. The final control of the construction and welding of the frame resulted in a nearly perfect construction. Problems that occurred with the forging and construction of the main sheave were solved with the help of a welding and material specialist of IHC Fabrication.