Calculating torsional vibrations of ship propellers and their impacts of all installations and components
Since its foundation in 1828 Bureau Veritas is a world leader in conformity assessment and certification services. With ship certification and classification the company is present in more than 130 countries worldwide. As part of this activity, the mission of Bureau Veritas Marine is to approve design plans for future ships, including structure, machines, electricity, safety and fire issues, stability, and more. It also covers factory inspection at various steps during construction, as well as monitoring ships in service. Torsional vibrations are a constant issue on propulsion and auxiliary machineries onboard ships. The system has to be carefully studied in order to prevent any failure that could lead to economical or even human disasters.
The role of Bureau Veritas is to ensure that all equipment will have vibratory levels within manufacturer and rules limits. It is therefore necessary to follow the manufacturing progress and to take into account precisely new technological components and their characteristics. As part of its activity in ship certification and classification taking 10% of its annual turnover, Bureau Veritas Marine has to perform calculations regarding torsional vibrations of ship propellers in order to verify the coherency of all installations and components within ships. Using documents provided by machine and equipment manufacturers such as engine manufacturers, suppliers, and naval shipyards, Bureau Veritas Marine needed to update its calculation tool in order to take new international regulations into account.