| 摘要 |
An apparatus for assessing the join between two mechanically cooperating subsea components (eg a stud 14 and line of a stud link mooring chain 9) comprises an exciting means (eg motorised hammer 25, acoustic source, magnetic source, projectile) for effecting propagation of a signal in one of the components and a receiving means (eg accelerometer (16), hydrophone 15, laser interferometer, strain gauge) for receiving a signal induced in at least one of the components. The received signal is processed to determine whether the components are joined in a loose or not loose condition. Alternatively the system may comprise a magnetic flux loss system, an eddy current system, a nuclear magnetic resonance system or an x-ray system. |
