Page 115: of Maritime Reporter Magazine (November 2012)

November 2012www.marinelink.com 115Hazardous Duty Magna Shear Motor Brakes MagnaShear oil shear motor brakes from Force Control Industries (Fairfield, OH) ? which are ideal for hazardous ma-rine environments - will be featured in the Force Control Industries booth #3468, during the International Work- Boat Show in New Orleans. These brakes are designed to eliminate normal maintenance and adjustment, operatesmoothly, and last up to 10-times longer than standard brakes. High grade cast- ings, marine duty coatings, stainless steelfasteners and accessories make these brakes a solution for onshore and off- shore marine applications ? includingthose with wide temperature variations (suitable for offshore operations down to -40°C). Their varied ship-board and in- port applications include use on anchorwinches, mooring winches, drawworks, capstans, conveyors, hoists, loaders and un-loaders, and more. Oil Shear Tech- nology is the reason that brakes by Force Control do not need maintenance, adjust-ment, disc replacement, and last up to 10times longer than standard brakes. Oil Shear Technology is the function of a boundary layer of transmission fluid inshear between the friction disc and drive plate. As the parts come together the fluid under shear will transmit torque betweenthe two parts as well as absorb heat. This heat is then taken away from the friction surface to the housing to be dissipated. www.forcecontrol.com Email: [email protected] Mechanical Pipe-Joining Products Victaulic received updated and renewed ABS Type Approvals for a range of grooved-end couplings and fittings. The newly issued approval certificates are valid until end June 2017 and cover join- ing methods, and that are ideally suitedto many applications in the shipbuilding and marine piping industries. Applica- tions include fresh water, potable water, sea water cooling and ballast systems; bilge pipes; vents and overflows; com- pressed air, sanitary, fire main and fire suppression systems. Among the products approved is the Victaulic Style 177 QuickVic flexible coupling ? part of the Victaulic patented installation-ready product line. It installsin half the time as standard flexible grooved couplings without the need to disassemble the bolts, nuts, gasket and housings ? making installation faster, easier and safer than any other solution currently available. ABS Product Type Approval for the 177 coupling includes sizes 2 to 4 in. (50mm ? 100mm) with apressure rating of 232 psi/1600 kPa. Also approved are Victaulic ZeroFlex rigid couplings (Style 07), flexible cou- plings (Style 77 and 75), reducing cou-pling (Style 750), Roust-A-Bout coupling(Style 99) and flange adapters (Style 741and 743). The products are manufactured from ductile iron conforming to ASTM A-536 and are available in varying sizes from 1? ? 12? (25mm - 300mm) accord-ing to product type. Certified for pres- sure ratings up to 232 psi/1600 kPa, they deliver high performance and http://www.victaulic.com/en/ businesses-solutions/maritimePortable Buoy System for Underwater Noise Measurements of ShipsNoise Control Engineering, Inc. (NCE)has created a portable system for meas-uring underwater radiated noise from vessels and offshore platforms. The sys- tem was developed using internal re- search and development funds as NCE sees an increasing need for underwater noise assessments given the planned con- struction of new Fisheries Research Ves- sels worldwide and a growth in awareness of underwater noise issues as they relate to the marine industry. The system uses a floating buoy that supports measurement hydrophones and data acquisition electronics. NCE engi-neers connect with the buoy electronics remotely to collect and process data; pro-viding the ability to calculate underwater noise signatures within minutes of themeasurement.The buoy can be deployed from the ship being tested by using a small craneor A-frame; this removes the need for ad- ditional support vessels, reducing the planning and operational costs of the test.The measurement system can be broken down and shipped in conventional cases, allowing for measurements to be per- formed in locations convenient to a par- ticular port or shipyard. NCE has used the system in two tests, performed on nearly opposite sides of theglobe, and has plans to use the system tomeasure noise from five different vessels in the next 12 months. This system can take measurements in accordance with the Grades B and C requirements ofANSI?s underwater measurement stan- dard ? S12.64 (2009).NCE?s Senior Engineer, Jesse Spence, stated that ?this measurement system willnot only augment NCE?s existing capa- bilities of underwater noise prediction, measurement, and solution identification, but will also reduce the costs of testing for shipyards and owners who need to perform underwater noise diagnostic or compliance measurements.E-mail: [email protected]: www.noise-control.com GL Garrad Hassan Releases WaveDyn At the International Conference on Ocean Energy (ICOE) in Dublin, GL Garrad Has- san released WaveDyn, the first independently developed wave energy converter design tool to be made commercially available. WaveDyn allows users to model a wide range of wave energy conversion device types. Its flexible, multi-body modeling approach, coupled with a hydrodynamic flow solver, and a range of additional modules, including Power Take-Off (PTO) and Moorings modules, allows the user to build models that match the physical properties of real machines. WaveDyn will take its place in the com- pany's software portfolio alongside the design tool for wind turbines, Bladed, and the tidal turbine design tool, Tidal Bladed. Wave energy conversion brings with it a unique set of challenges, one of the most significant being the independent evaluation of the wide variety of different device types under development. WaveDyn has been devel- oped to provide one self-consistent and rigorous tool that can be applied to a wide range of concepts. WaveDyn has been under development at GL Garrad Hassan for nearly five years, during which it has been applied to a wide range of wave energy converter types. It has benefitted from extensive verification exercises involving other device specific numerical models, and validation against experimental data from both R&D and com- mercial design projects. Most recently, WaveDyn has undergone Beta testing and vali- dation as part of the £8m PerAWaT Project (Performance Assessment of Wave and Tidal Array Systems) commissioned and funded by the Energy Technologies Institute. WaveDyn PreProcessing and Overview. (Images copyright - GL Group) MR#11 (114--121):MR Template 11/6/2012 11:53 AM Page 115