Baltimore plans explosive end for collapsed bridge to free trapped box ship
The task force working on the restoration of full access to the port of Baltimore ...
By Mike Wackett
Japanese classification society ClassNK is claiming a “world-first” breakthrough finding in the required crack arrest toughness of steel plates used in the construction of ultra-large container vessels (ULCVs).
In response to the huge increases in containership sizes over the past decade and the need to ensure their structural reliability, in January 2013 the International Association of Classification Societies (IACS) released its “Unified Requirements” for the use of extremely thick steel plates, outlining a minimum brittle crack arrest toughness value of 6,000 N/mm 3/2 ...
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Dave McCrae
July 30, 2016 at 12:20 amWe encountered this problem in 1976 in Perry Nuclear Plant Emergency Cooling Water Intake Structures. The crack initiation was traced to weld joint design, and lamellar tearing within the plate.