Marine link
 
Articles - Ship Repair - History

New Underwater Welding Process Approved By LR

Lloyd's Register of Shipping has reportedly given approval to a new process of underwater welding developed by U.K.-based UMC International Pic for permanent repairs to the shell plating of a ship. The technique allows defective areas of shell plating to be cut out and replacement insert plates to be welded into place beneath the waterline while ships are afloat, which is accomplished by the creation of an air-filled void space underwater in was of the defect.

UMC's process overcomes the necessity of welding from both the inside and outside by employing a combination of Tungsten Inert Gas (TIG) and conventional welding, using low hydrogen electrodes to overcome the difficulty. The repair is then examined using ultrasonic and magnetic particle examinations.

UMC's Managing Director David Jones explained: "Getting a welder who is a diver or putting a ship into drydock for repair are both expensive. This new method uses the specialist skills of diver and welder and effects a permanent repair from inside the ship ... It also overcomes the traditional reluctance of classification societies to accept any form of underwater welding for permanent repairs to shell plating. We expect other classification societies to follow Lloyd's in approving this new technique shortly." For more information on UMS International Pic Circle 115 on Reader Service Card




Ship Repair History

ABB Turbocharger Repairs VTR..4 Turbine Blades
ABB Turbocharger: Renewed Focus On Quality, Customer Service
ASRY Improves Performance In 1993
Avondale Repairs Holland America's Noordam
BethShip Sparrows Point Expands Orderbook
BoatLIFE Offers Deck Protection Experience, Products To Cruise Ship Industry
Boxship Business Booming
Business Is Brisk
Caridoc A Variety of Drydocking/Repair Services In the Caribbean
Del Gavio: Complete Hydraulics Service On Both Coasts
Dutch Builders Enjoy Influx Of International Orders
FPSO And Cruise Ship Work Dominate Repair Market
FRATELLI ORLANDO . . . . . . Resurgence of shipbuilding in Livorno
Getting To Where The Gouges Reside
HHI Starts ' 97 Strong Korean yard wins bulker contract from Norway's Bergesen to start year
Impact of Propulsion Plant Choice On Maintenance
New Towboat Built on Old Hull
Portland's Ship Repair Business Strengthened With Cascade General Sale
Practical Guide to the Year 2000 Problem
Promotions For Newport News' Top Executives
Quality, Diversity Drive Atlantic Marine Holding Co.'s Success
Shipbuilding in South Korea… Expansion Continues
SIFCO Selective Plating
SPD Technologies Rolls With The Changes, Targets Civilian Specialty Market
Sperry Marine
Transfer Of Ownership Of Florida Yard Results In Expanded Services
Tranter, inc.
Trinity Signs Contract for Four Tank Barges; Refurbishes Passenger Boat
Unitor Introduces Shipboard Polymer Repair System
Vietnam Government Approves Keppel/BaSon Joint Venture Shipyard
 
rss feeds | archive | privacy | history | articles | contributors | top news | contact us | about us | copyright