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
Showing posts with label life extension of aging offshore assets. Show all posts
Showing posts with label life extension of aging offshore assets. Show all posts
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
Monday, October 1, 2007
Meeting The Challenge of the North Seas
2010 update: fatigue life reset to zero and 15 year operational life extension: http://blog.appliedultrasonics.com/2011/11/applied-ultrasonics-uit-resets-fatigue.html
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Applied Ultrasonics was hired to treat one of Noble Drilling's rigs in the North Sea, the Ton van Langeveld, an offshore drilling rig built in 1979 that had developed deep stresses from years of high demand work in the face of some the harshest operating conditions in the world. In the North Sea, a drilling rig takes a constant beating and welds are exposed to enormous stresses coupled with the corrosive saltwater environment.
Applied Ultrasonics uses a patented technology called, Ultrasonic Impact Technology (UIT) to treat a range of metals, removing weaknesses and reducing metal fatigue while extending the life of critical parts and structures.
Applied Ultrasonics' quick-reaction team was mobilized to treat welds inside and out on the cross bracing (the middle columns, K-joints, outer columns / chain lockers) using Applied Ultrasonics' PLC 05 portable equipment. The team got in, treated the high stress areas and got out with minimal time on the site, ensuring uninterrupted workflow while the Ton van Langeveld was in dry-dock.
Applied Ultrasonics' PLC 05 portable equipment was used to treat welds that were deep inside enclosed areas, thus imparting compressive stresses and stress relief in areas that are inaccessible by other methods. The results were successful in extending fatigue life by a factor of 6-8 while reducing overall downtime.
About Noble Corporation
Noble Corporation (NYSE: NE) is a leading provider of diversified services for the oil and gas industry. The Company performs contract drilling services with its fleet of 62 mobile offshore drilling units located in key markets worldwide, including th U.S. Gulf of Mexico, Middle East, Mexico, the North Sea, Brazil, West Africa and India. The fleet count includes five rigs under construction. Information on Noble Corporation is available at http://www.noblecorp.com/.
About Applied Ultrasonics
Applied Ultrasonics is the world leader in the design and delivery of Ultrasonic Impact Technology solutions, equipment and service for heavy manufacturing industries worldwide and currently owns 5 patents, 46 partner patent applications and numerous more patents pending. Applied Ultrasonics is based in Birmingham, AL with offices in Europe, Asia and Australia.
Contact:
Taylor Hanes
Business Development Manager, Applied Ultrasonics
205.951.7747
thanes@appliedultrasonics
Original post: http://www.appliedultrasonics.com/news.html#2
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Applied Ultrasonics was hired to treat one of Noble Drilling's rigs in the North Sea, the Ton van Langeveld, an offshore drilling rig built in 1979 that had developed deep stresses from years of high demand work in the face of some the harshest operating conditions in the world. In the North Sea, a drilling rig takes a constant beating and welds are exposed to enormous stresses coupled with the corrosive saltwater environment.
Applied Ultrasonics uses a patented technology called, Ultrasonic Impact Technology (UIT) to treat a range of metals, removing weaknesses and reducing metal fatigue while extending the life of critical parts and structures.
Applied Ultrasonics' quick-reaction team was mobilized to treat welds inside and out on the cross bracing (the middle columns, K-joints, outer columns / chain lockers) using Applied Ultrasonics' PLC 05 portable equipment. The team got in, treated the high stress areas and got out with minimal time on the site, ensuring uninterrupted workflow while the Ton van Langeveld was in dry-dock.
Applied Ultrasonics' PLC 05 portable equipment was used to treat welds that were deep inside enclosed areas, thus imparting compressive stresses and stress relief in areas that are inaccessible by other methods. The results were successful in extending fatigue life by a factor of 6-8 while reducing overall downtime.
About Noble Corporation
Noble Corporation (NYSE: NE) is a leading provider of diversified services for the oil and gas industry. The Company performs contract drilling services with its fleet of 62 mobile offshore drilling units located in key markets worldwide, including th U.S. Gulf of Mexico, Middle East, Mexico, the North Sea, Brazil, West Africa and India. The fleet count includes five rigs under construction. Information on Noble Corporation is available at http://www.noblecorp.com/.
About Applied Ultrasonics
Applied Ultrasonics is the world leader in the design and delivery of Ultrasonic Impact Technology solutions, equipment and service for heavy manufacturing industries worldwide and currently owns 5 patents, 46 partner patent applications and numerous more patents pending. Applied Ultrasonics is based in Birmingham, AL with offices in Europe, Asia and Australia.
Contact:
Taylor Hanes
Business Development Manager, Applied Ultrasonics
205.951.7747
thanes@appliedultrasonics
Original post: http://www.appliedultrasonics.com/news.html#2
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