Vortex induced vibration (VIV) can occur on deep-water and shallow water steel riser systems and flowlines. With a constant current-induced vibration, depending on amplitude and frequency of vibration, the dynamic stress that results causes stress fatigue cracking. Understanding the motion characteristics of the flowline, riser or structure can be monitored by use of precision accelerometer sensors from which motion characteristics can be extracted.
Working with our strategic partner 4Subsea we have extensive in-house expertise in measurement of dynamic motions and attitude of offshore and subsea structures and experience in providing monitoring solutions and providing real-time information and post-processing of data to extract behavioural information.
Ashtead Technology in collaboration with 4Subsea can also provide full temporary or permanent VIV monitoring services to physically acquire vibration data and extract information using real-time characterisation and post-analysis techniques to allow informed decisions to be made to protect and prolong the life of assets.