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

A Stitch In Time... Metal Stitching Technology Helps To Cut Costs, Keeps Vessels Sailing
Agreement Finalized For Purchase And Cleanup Of Seattle Waterfront Property
ASRY Improves Performance In 1993
AWSC 1993 Annual Report
BethShip Sparrows Point Expands Orderbook
Caridoc A Variety of Drydocking/Repair Services In the Caribbean
Companies In Southern Region Of U.S. Adjust Product, Market Focus To Remain Competitive
Drew Ameroid Marine Forms CFC Conversion Alliance With York Marine Systems
DUBAI: Tops For Tankers
Getting To Where The Gouges Reside
Going Deep
Goltens Expands Capacity W i t h N e w Grinder
Making It A Clean Sweep
MAN B&W—Hamburg service center
NASSCO Invests In Technology To Capture Commercial Business
New Towboat Built on Old Hull
Portland's Ship Repair Business Strengthened With Cascade General Sale
Promotions For Newport News' Top Executives
QE2 Refit Completed In Southampton
Qualify, Quantity Issues Abound
Quality, Diversity Drive Atlantic Marine Holding Co.'s Success
Revenue And Profitability Gains Reported By ASRY
SHIP REPAIR & CONVERSION: Review of 1994
Southwest Marine Inc. Expands Into New Market President And CEO
SPD Technologies Rolls With The Changes, Targets Civilian Specialty Market
The Need To Rationalize Navy ship Maintenance Capacitu
U.S. Northwest: Ship repair Activity Picks Up
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