Vortex Induced Vibration (VIV) Suppression
We have completed a number of high profile contracts for the design, engineering and supply of VIV suppression solutions throughout the world. We are perhaps the largest and most experienced manufacturer of VIV suppression systems, we have an extensive customer list comprising all key operators and contractors.
VIV is caused by the regular shedding of vortices in the wake behind a pipe in steady current. The flow naturally "locks in" to shed these vortices in the same pattern at the same frequency along a significant length of pipe. This "lock in" is measured by the spanwise coherence and can cause the pipe to vibrate.
VIV causes accelerated fatigue damage and can give rise to problems such as pipe girth weld failure or premature pipe failure. Rigid steel flowlines unsupported over free spans are also prone to this phenomenon.
We recognised this increasingly common problem and to suppress the damaging vibration forces to an acceptable level we developed a comprehensive analytical design and engineering package complete with a number of highly successful VIV suppression products.