In a short timeframe, VIRO developed a Hose Reel for IHC Offshore Systems, one of IHC Merwede’s business units, known for ships and equipment for the dredging and the offshore market. This reel is used for rolling up and unrolling a hose of 1 meter in diameter and 235 metres long at sea. Oil is extracted from various wells in the seabed off the coast of Brazil, and stored in a ship anchored to the ocean-floor (FPSO). After separating the sand, water and gas, this oil is pumped once a week into a Shuttle tanker, using the hose on the Hose Reel. The FPSO has two Hose Reels, one on the bow and one at the stern. The design of the Hose Reel has a diameter of 10 metres and a length of 12 metres.
The challenge was to absorb the large forces resulting from the ship movements on the Hose Reel with a filled hose, ca. 210 tonnes in total. Besides, the project was scheduled with a short lead time. The preliminary design and the basic engineering were therefore carried out by VIRO designer Jac Geurts, under the guidance of IHC Offshore Systems in Sliedrecht. The Structural Analysis and detail engineering were carried out by VIRO in Echt, with regular support from IHC Offshore Systems. After modelling down into the smallest detail, the shop-drawings were made and the strength and fatigue calculations were done for each part. The calculations were prepared in Femap and calculated with NX6 Advanced Simulation to record the material stress. The result is a construction with parts that can give way a little and which is suitable for work at the open sea during 20 years. Close consultation at each phase, and good collaboration between the engineers of IHC Offshore Systems and VIRO enabled this project to be a technical success.