Applied Ultrasonics UIT resets fatigue life to ZERO and extends operation life by 15 years on Noble Ton van Langeveld Semi-Submersible Oil Rig

In May 2007, Applied Ultrasonics treated 82 welds on 12 critical column bracing connections on the rig; GustoMSC, a leading offshore engineering firm, conducted a detailed fatigue analysis for Noble and determined these connections would fail in the next 15 years…...

The shipyard works took two weeks with two crews to complete. After UIT treatment, GustoMSC determined the fatigue life of the connections were reset to zero and ABS granted a 15-year life extension for the rig to continue operations in the North Sea.

In September 2010, Noble performed the inspections required for 5-year special survey (done a year early due to contract timing). They did an underwater in lieu of dry dock (UWILD) inspection and found ZERO cracks on the welds treated with UIT. The rig resumed contract in December 2010, garnering a competitive day-rate for a North Sea rig of its class.

Original post: http://appliedultrasonics.com/news.html#-1

UIT – Ultrasonic Impact Technology

Enhancing Productivity & Profit Potential on the Strength of Sound
The tremendous cost and downtime stemming from stress fatigue and metal corrosion can impact profitability and productivity of businesses in metal and machine-reliant industries on an annual basis. Answering the call for a more efficient and cost effective solution to these issues, UIT, or Ultrasonic Impact Technology has emerged as a faster, budget-compatible means of extending fatigue life. Using ultrasonic energy to combat corrosive and fatigue effects on a variety of metals, UIT from Applied Ultrasonics reduces downtime and repair costs, while increasing productivity and profit margins for businesses in a wide spectrum of industries.