Moorlink AB - Wire Clamps, Swivel Links and ConnectionsMoorLink are experts in developing special mooring components for the offshore industry. This includes design, fabrication and installation of swivel links, connections and wire clamps for all sizes of chain and wire. With our expertise and know-how we are able to provide safe and flexible mooring solutions that can be adapted to your exact requirements and this means substantial savings for you. We focus on three main solutions that are: installation solutions, mobile mooring solutions and permanent mooring solutions. SWIVEL LINKSThe ML 1200/40 LTM (Long Term Mooring) Swivel Link was especially designed for the FPSO "PetroJarl Foinaven" which is moored west of Shetland. The link connects the upper two wire segments (diameter 135mm six stranded wire each) as well as joining the 40 Te net up-lift subsurface buoy to the mooring line. The link is constructed from a 200mm thick plate and includes a large diameter brass bearing which prevents the buoy pigtail from twisting around the mooring line. Composite Orkot bushes or washers (in total 14 on each link) protect all items in movement. Extensive technical investigations and calculation were performed in order to ensure these links will withstand the harsh environment for a period of at least 20 years. This included fatigue and static calculations as well as cathodic protection calculations to meet DnV's standard for long-term mooring systems. The complete weight in air is 2,450kg each. Other swivel links include: The ML 700 LF/LT Swivel Link has been developed in co-operation with Petrobras in Brazil to be used in installation of mooring systems in deep water (up to 2,000m). The swivel contains double roller bearing systems in order to achieve low friction and low break-out torque overcoming the torsion induced in mooring operations. The design will also suit the requirements for a high performance swivel for drilling units. The Swivel 3,000kN - 12,000kN is a low friction swivel link built to meet the most stringent requirements set by the offshore industry. Capable of operating in water depths down to 2000 m, the swivels are supplied in either forged or cast versions. The structural design is thoroughly analysed by FEM-analysis, allowing the swivel to run through a fairlead or over an anchor handler stern roller under high load, avoiding damages to the bearing system or any other part in the swivel. WIRE CLAMPSThe ML 64-90/40 patented wire clamp is a specially designed wire clamp developed to fit surface or sub-surface buoyancy to six stranded mooring wires of any diameter. The clamps are cast in a high-grade steel, heat treated for correct material characteristic and finally machined to fit perfectly. A mould is then taken of the six stranded wire which is placed in between the two halves of the outer casted casings. A specially chosen type and hardness of polyurethane is then poured into the inside of the steel halves. The result is a high performance system which serves the two requirements of extremely high longitudinal holding power and minimum wear/fatigue of the mooring wire. The outer part accommodates a swivel with a built in shackle for easy fit of the buoy pigtail. The swivel limits the torque effect which is built up in the mooring wire whilst under tension. Moorlink has successfully supplied over 100 clamps in wire sizes from 64mm to 90mm wire rope. Other sizes are also available upon request. REFERENCES MoorLink have supplied equipment to the following companies. Installation solutions:
Mobile mooring solutions:
Permanent mooring solutions:
Moorlink AB
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  The ML 1200/40 LTM (Long Term Mooring) Swivel Link was designed and developed for the Golar Nor FPSO Petrojarl Foinaven 10-point mooring system. | ||
 The ML 1200/40 includes a large diameter Johnson Oile brass bearing avoiding buoy pig tail twisting around the mooring line whilst under tension/torque. All steel parts in the movement are protected by Orkot composite bushes and washers to avoid mechanical wear. | |||
 The ML 700LF/LT Mooring Swivel contains a double bearing system in order to achieve low friction and low break-out torque overcoming the torsion induced in mooring operations. | |||
 Moorlink low friction swivels are built to meet the most stringent requirements set by the offshore industry, capable of operating in water depths down to 2000m. | |||
 The ML 64-90/40 Mk 4 Wire Clamp is specially designed and developed for the requirement of fitting buoyancy (surface or sub-surface) to six stranded mooring wires of all possible diameters. |
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