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

Agreement Finalized For Purchase And Cleanup Of Seattle Waterfront Property
Bender Shipbuilding And ENSCO Drilling Christen Drilling Barge
BethShip Sparrows Point Expands Orderbook
BoatLIFE Offers Deck Protection Experience, Products To Cruise Ship Industry
Del Gavio Marine Hydraulics, Inc.
DUBAI: Tops For Tankers
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
Going Deep
Heightened Environmental Pressures, Rising Freight Rates Buoy Ship Repair Industry Announces New Contracts
Impact of Propulsion Plant Choice On Maintenance
Keppel Joint Venture Results In Australia Yard Opening
Klattenberg Marine Agency Helps Link Shipowners With Spare Parts, Yards
NASSCO Invests In Technology To Capture Commercial Business
New Towboat Built on Old Hull
Orkot Helps Repair Iceberg Damage To Tanker, Overseas Okie
PSY Director Warns Against Lifting Alaska Oil Ban
Renovation Of Inland Service Tug Completed
Ship Repair & Conversion '93
TBT ban threatens yard business
Tenf jord/Cunningham Marine/Marserv
The Need To Rationalize Navy ship Maintenance Capacitu
Transfer Of Ownership Of Florida Yard Results In Expanded Services
Trinity Signs Contract for Four Tank Barges; Refurbishes Passenger Boat
Unitor Introduces Shipboard Polymer Repair System
Vietnam Government Approves Keppel/BaSon Joint Venture Shipyard
Welding Technique Helps Navy Save Millions
Wheeler Becomes U.S. Agent For Romanian Yard
rss feeds | archive | privacy | history | articles | contributors | top news | contact us | about us | copyright