In September 2009, Applied Ultrasonics treated weld connections on the A-frame and propel structure of a Page 852 dragline owned by CF Industries with their patented UIT (Ultrasonic Impact Technology).
In the past, these welds would crack every 2-3 months and fail every 6 months, requiring repair and associated downtime, year after year, for the entire 15 years of the asset’s service.
The Ultrasonic Impact Treatment was done during a repair outage with one crew over a period of 3 days. The UIT crew supported several welding crews making repairs, yet due to the speed and efficiency of UIT, only added a few hours to the total repair time.
Since the UIT treatment, CF Industries has not had any problems with cracking and has not had to take the dragline out of service for weld repairs. UIT extended the time between failure by at least FOUR TIMES and has saved CF Industries at least $1.5 million in repair and non-productive time (downtime) costs.
Original post: http://appliedultrasonics.com/news.html#-2
Monday, November 28, 2011
Friday, November 18, 2011
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
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
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