Permanent underwater wet welding repairs approved by DNV GL

OLYMPUS DIGITAL CAMERADNV GL and Subsea Global Solutions LLC. are proud to announce that they have completed an extensive joint research and development program, that will allow permanent repairs to be carried out by underwater wet welding on certain areas of vessels. Subsea Global Solutions’ global network of coded welder divers will be available to perform these permanent repairs on a case by case basis utilizing this procedure in suitable locations throughout the world in accordance with the approvals given by DNV GL.

Over the last two and a half years, Subsea Global Solutions welded in excess of 80 groove weld test plates underwater at depth in their training facilities in Miami, Florida, Long Beach, California and Terneuzen, the Netherlands. The non-destructive and mechanical testing of the plates was performed at the DNV GL lab in Hamburg, Germany. All data collected was shared between SGS and DNV GL during this procedure development program.

OLYMPUS DIGITAL CAMERAAt the End of April 2014, test plates were welded in the training tank in Miami Florida, with a DNV GL welding engineer in attendance. The non-destructive and destructive testing was again performed at the DNV GL lab in Hamburg. Welding of the plates as well as non-destructive and destructive testing was performed in accordance with AWS D3.6M:2010 Class A. The results of the non-destructive and destructive testing were very positive with all welded test plates exhibiting metallurgical properties equivalent to permanent weld repairs performed “top-side” dry.

About DNV GL 

Driven by its purpose of safeguarding life, property and the environment, DNV GL enables organisations to advance the safety and sustainability of their business. We provide classification and technical assurance services along with software and independent expert advisory services to the maritime, oil & gas and energy industries. We also provide management system certification services to customers across a wide range of industries. Operating in more than 100 countries, our 16,000 professionals are dedicated to helping our customers make the world safer, smarter and greener.
For more information:  www.dnvgl.com

About SUBSEA GLOBAL SOLUTIONS LLC

Subsea Global Solutions (SGS) consists of underwater ship repair specialists Miami Diver LLC, Parker Diving Service LLC and Trident BV.  With a dedicated staff of over 100 diver / technicians and welder divers globally, SGS has revolutionized the methods of repair for ship shell plates and equipment underwater.  Through a common shared system of dive equipment, specialty tools, and personnel SGS is able to mobilize quickly anywhere throughout the world for repairs of most shell plate, propulsion or underwater equipment.   Services include the permanent shell plate repairs, replacement of aft propeller shaft seals, the exchange of thrusters and repair of propellers. SGS has become the Original Equipment Manufacturer’s choice for all types of complex repairs.  With class approved techniques and a highly trained staff in both underwater ship repair and propulsion equipment maintenance, SGS is the clear choice for vessels operating in sensitive environments and on critical trade routes.

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